| // Copyright 2015 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.lib.syntax; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.devtools.build.lib.testutil.MoreAsserts.assertThrows; |
| import static java.util.stream.Collectors.joining; |
| |
| import com.google.common.collect.ImmutableCollection; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.devtools.build.lib.analysis.test.AnalysisFailure; |
| import com.google.devtools.build.lib.analysis.test.AnalysisFailureInfo; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.events.Location; |
| import com.google.devtools.build.lib.packages.NativeInfo; |
| import com.google.devtools.build.lib.packages.NativeProvider; |
| import com.google.devtools.build.lib.packages.StructProvider; |
| import com.google.devtools.build.lib.skylarkinterface.Param; |
| import com.google.devtools.build.lib.skylarkinterface.ParamType; |
| import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable; |
| import com.google.devtools.build.lib.skylarkinterface.SkylarkGlobalLibrary; |
| import com.google.devtools.build.lib.skylarkinterface.SkylarkModule; |
| import com.google.devtools.build.lib.syntax.util.EvaluationTestCase; |
| import java.util.List; |
| import java.util.Map; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests of Starlark evaluation. */ |
| // There is no clear distinction between this and EvaluationTest. |
| // TODO(adonovan): reorganize. |
| @SkylarkGlobalLibrary // required for @SkylarkCallable-annotated methods |
| @RunWith(JUnit4.class) |
| public final class SkylarkEvaluationTest extends EvaluationTestCase { |
| |
| @Immutable |
| static class Bad { |
| Bad () { |
| } |
| } |
| |
| @SkylarkCallable(name = "foobar", documented = false) |
| public String foobar() { |
| return "foobar"; |
| } |
| |
| @SkylarkCallable(name = "interrupted_function", documented = false) |
| public NoneType interruptedFunction() throws InterruptedException { |
| throw new InterruptedException(); |
| } |
| |
| private static final NativeProvider<NativeInfoMock> CONSTRUCTOR = |
| new NativeProvider<NativeInfoMock>(NativeInfoMock.class, "native_info_mock") {}; |
| |
| @SkylarkModule(name = "Mock", doc = "") |
| class NativeInfoMock extends NativeInfo { |
| |
| public NativeInfoMock() { |
| super(CONSTRUCTOR); |
| } |
| |
| @SkylarkCallable(name = "callable_string", documented = false, structField = false) |
| public String callableString() { |
| return "a"; |
| } |
| |
| @SkylarkCallable(name = "struct_field_string", documented = false, structField = true) |
| public String structFieldString() { |
| return "a"; |
| } |
| |
| @SkylarkCallable(name = "struct_field_callable", documented = false, structField = true) |
| public BuiltinCallable structFieldCallable() { |
| return new BuiltinCallable(SkylarkEvaluationTest.this, "foobar"); |
| } |
| |
| @SkylarkCallable( |
| name = "struct_field_none", |
| documented = false, |
| structField = true, |
| allowReturnNones = true |
| ) |
| public String structFieldNone() { |
| return null; |
| } |
| } |
| |
| @SkylarkModule(name = "Mock", doc = "") |
| class Mock implements StarlarkValue { |
| @SkylarkCallable( |
| name = "MockFn", |
| selfCall = true, |
| documented = false, |
| parameters = { |
| @Param(name = "pos", positional = true, type = String.class), |
| }) |
| public String selfCall(String myName) { |
| return "I'm a mock named " + myName; |
| } |
| |
| @SkylarkCallable( |
| name = "value_of", |
| parameters = {@Param(name = "str", type = String.class)}, |
| documented = false) |
| public Integer valueOf(String str) { |
| return Integer.valueOf(str); |
| } |
| @SkylarkCallable(name = "is_empty", |
| parameters = { @Param(name = "str", type = String.class) }, |
| documented = false) |
| public Boolean isEmpty(String str) { |
| return str.isEmpty(); |
| } |
| public void value() {} |
| @SkylarkCallable(name = "return_bad", documented = false) |
| public Bad returnBad() { |
| return new Bad(); // not a legal Starlark value |
| } |
| @SkylarkCallable(name = "struct_field", documented = false, structField = true) |
| public String structField() { |
| return "a"; |
| } |
| |
| @SkylarkCallable( |
| name = "struct_field_with_extra", |
| documented = false, |
| structField = true, |
| useStarlarkSemantics = true) |
| public String structFieldWithExtra(StarlarkSemantics sem) { |
| return "struct_field_with_extra(" |
| + (sem != null) |
| + ")"; |
| } |
| |
| @SkylarkCallable(name = "struct_field_callable", documented = false, structField = true) |
| public Object structFieldCallable() { |
| return new BuiltinCallable(SkylarkEvaluationTest.this, "foobar"); |
| } |
| |
| @SkylarkCallable(name = "interrupted_struct_field", documented = false, structField = true) |
| public Object structFieldInterruptedCallable() throws InterruptedException { |
| throw new InterruptedException(); |
| } |
| |
| @SkylarkCallable(name = "function", documented = false, structField = false) |
| public String function() { |
| return "a"; |
| } |
| |
| @SuppressWarnings("unused") |
| @SkylarkCallable( |
| name = "nullfunc_failing", |
| parameters = { |
| @Param(name = "p1", type = String.class), |
| @Param(name = "p2", type = Integer.class), |
| }, |
| documented = false, |
| allowReturnNones = false) |
| public StarlarkValue nullfuncFailing(String p1, Integer p2) { |
| return null; |
| } |
| |
| @SkylarkCallable(name = "nullfunc_working", documented = false, allowReturnNones = true) |
| public StarlarkValue nullfuncWorking() { |
| return null; |
| } |
| @SkylarkCallable(name = "voidfunc", documented = false) |
| public void voidfunc() {} |
| @SkylarkCallable(name = "string_list", documented = false) |
| public ImmutableList<String> stringList() { |
| return ImmutableList.<String>of("a", "b"); |
| } |
| @SkylarkCallable(name = "string", documented = false) |
| public String string() { |
| return "a"; |
| } |
| @SkylarkCallable(name = "string_list_dict", documented = false) |
| public Map<String, List<String>> stringListDict() { |
| return ImmutableMap.of("a", ImmutableList.of("b", "c")); |
| } |
| |
| @SkylarkCallable( |
| name = "legacy_method", |
| documented = false, |
| parameters = { |
| @Param(name = "pos", positional = true, type = Boolean.class), |
| @Param(name = "legacyNamed", type = Boolean.class, positional = true, named = false, |
| legacyNamed = true), |
| @Param(name = "named", type = Boolean.class, positional = false, named = true), |
| }) |
| public String legacyMethod(Boolean pos, Boolean legacyNamed, Boolean named) { |
| return "legacy_method(" |
| + pos |
| + ", " |
| + legacyNamed |
| + ", " |
| + named |
| + ")"; |
| } |
| |
| @SkylarkCallable( |
| name = "with_params", |
| documented = false, |
| parameters = { |
| @Param(name = "pos1"), |
| @Param(name = "pos2", defaultValue = "False", type = Boolean.class), |
| @Param( |
| name = "posOrNamed", |
| defaultValue = "False", |
| type = Boolean.class, |
| positional = true, |
| named = true), |
| @Param(name = "named", type = Boolean.class, positional = false, named = true), |
| @Param( |
| name = "optionalNamed", |
| type = Boolean.class, |
| defaultValue = "False", |
| positional = false, |
| named = true), |
| @Param( |
| name = "nonNoneable", |
| type = Object.class, |
| defaultValue = "\"a\"", |
| positional = false, |
| named = true), |
| @Param( |
| name = "noneable", |
| type = Integer.class, |
| defaultValue = "None", |
| noneable = true, |
| positional = false, |
| named = true), |
| @Param( |
| name = "multi", |
| allowedTypes = { |
| @ParamType(type = String.class), |
| @ParamType(type = Integer.class), |
| @ParamType(type = Sequence.class, generic1 = Integer.class), |
| }, |
| defaultValue = "None", |
| noneable = true, |
| positional = false, |
| named = true) |
| }) |
| public String withParams( |
| Integer pos1, |
| boolean pos2, |
| boolean posOrNamed, |
| boolean named, |
| boolean optionalNamed, |
| Object nonNoneable, |
| Object noneable, |
| Object multi) { |
| return "with_params(" |
| + pos1 |
| + ", " |
| + pos2 |
| + ", " |
| + posOrNamed |
| + ", " |
| + named |
| + ", " |
| + optionalNamed |
| + ", " |
| + nonNoneable |
| + (noneable != Starlark.NONE ? ", " + noneable : "") |
| + (multi != Starlark.NONE ? ", " + multi : "") |
| + ")"; |
| } |
| |
| @SkylarkCallable(name = "with_extra", documented = false, useStarlarkThread = true) |
| public String withExtraInterpreterParams(StarlarkThread thread) { |
| return "with_extra(" + thread.getCallerLocation().line() + ")"; |
| } |
| |
| @SkylarkCallable( |
| name = "with_params_and_extra", |
| documented = false, |
| parameters = { |
| @Param(name = "pos1"), |
| @Param(name = "pos2", defaultValue = "False", type = Boolean.class), |
| @Param( |
| name = "posOrNamed", |
| defaultValue = "False", |
| type = Boolean.class, |
| positional = true, |
| named = true), |
| @Param(name = "named", type = Boolean.class, positional = false, named = true), |
| @Param( |
| name = "optionalNamed", |
| type = Boolean.class, |
| defaultValue = "False", |
| positional = false, |
| named = true), |
| @Param( |
| name = "nonNoneable", |
| type = Object.class, |
| defaultValue = "\"a\"", |
| positional = false, |
| named = true), |
| @Param( |
| name = "noneable", |
| type = Integer.class, |
| defaultValue = "None", |
| noneable = true, |
| positional = false, |
| named = true), |
| @Param( |
| name = "multi", |
| allowedTypes = { |
| @ParamType(type = String.class), |
| @ParamType(type = Integer.class), |
| @ParamType(type = Sequence.class, generic1 = Integer.class), |
| }, |
| defaultValue = "None", |
| noneable = true, |
| positional = false, |
| named = true) |
| }, |
| useStarlarkThread = true) |
| public String withParamsAndExtraInterpreterParams( |
| Integer pos1, |
| boolean pos2, |
| boolean posOrNamed, |
| boolean named, |
| boolean optionalNamed, |
| Object nonNoneable, |
| Object noneable, |
| Object multi, |
| StarlarkThread thread) { |
| return "with_params_and_extra(" |
| + pos1 |
| + ", " |
| + pos2 |
| + ", " |
| + posOrNamed |
| + ", " |
| + named |
| + ", " |
| + optionalNamed |
| + ", " |
| + nonNoneable |
| + (noneable != Starlark.NONE ? ", " + noneable : "") |
| + (multi != Starlark.NONE ? ", " + multi : "") |
| + ", " |
| + thread.getCallerLocation().line() |
| + ")"; |
| } |
| |
| @SkylarkCallable(name = "proxy_methods_object", |
| doc = "Returns a struct containing all callable method objects of this mock", |
| allowReturnNones = true) |
| public ClassObject proxyMethodsObject() { |
| ImmutableMap.Builder<String, Object> builder = new ImmutableMap.Builder<>(); |
| Starlark.addMethods(builder, this); |
| return StructProvider.STRUCT.create(builder.build(), "no native callable '%s'"); |
| } |
| |
| @SkylarkCallable( |
| name = "with_args_and_thread", |
| documented = false, |
| parameters = { |
| @Param(name = "pos1", type = Integer.class), |
| @Param(name = "pos2", defaultValue = "False", type = Boolean.class), |
| @Param(name = "named", type = Boolean.class, positional = false, named = true), |
| }, |
| extraPositionals = @Param(name = "args"), |
| useStarlarkThread = true) |
| public String withArgsAndThread( |
| Integer pos1, boolean pos2, boolean named, Sequence<?> args, StarlarkThread thread) { |
| String argsString = debugPrintArgs(args); |
| return "with_args_and_thread(" |
| + pos1 |
| + ", " |
| + pos2 |
| + ", " |
| + named |
| + ", " |
| + argsString |
| + ")"; |
| } |
| |
| @SkylarkCallable( |
| name = "with_kwargs", |
| documented = false, |
| parameters = { |
| @Param(name = "pos", defaultValue = "False", type = Boolean.class), |
| @Param(name = "named", type = Boolean.class, positional = false, named = true), |
| }, |
| extraKeywords = @Param(name = "kwargs")) |
| public String withKwargs(boolean pos, boolean named, Dict<String, Object> kwargs) { |
| String kwargsString = |
| "kwargs(" |
| + kwargs |
| .entrySet() |
| .stream() |
| .map(entry -> entry.getKey() + "=" + entry.getValue()) |
| .collect(joining(", ")) |
| + ")"; |
| return "with_kwargs(" + pos + ", " + named + ", " + kwargsString + ")"; |
| } |
| |
| @SkylarkCallable( |
| name = "with_args_and_kwargs", |
| documented = false, |
| parameters = { |
| @Param(name = "foo", named = true, positional = true, type = String.class), |
| }, |
| extraPositionals = @Param(name = "args"), |
| extraKeywords = @Param(name = "kwargs")) |
| public String withArgsAndKwargs(String foo, Tuple<Object> args, Dict<String, Object> kwargs) { |
| String argsString = debugPrintArgs(args); |
| String kwargsString = |
| "kwargs(" |
| + kwargs |
| .entrySet() |
| .stream() |
| .map(entry -> entry.getKey() + "=" + entry.getValue()) |
| .collect(joining(", ")) |
| + ")"; |
| return "with_args_and_kwargs(" + foo + ", " + argsString + ", " + kwargsString + ")"; |
| } |
| |
| @SkylarkCallable(name = "raise_unchecked_exception", documented = false) |
| public void raiseUncheckedException() { |
| throw new InternalError("buggy code"); |
| } |
| |
| @Override |
| public String toString() { |
| return "<mock>"; |
| } |
| } |
| |
| private static String debugPrintArgs(Iterable<?> args) { |
| Printer p = Printer.getPrinter(); |
| p.append("args("); |
| String sep = ""; |
| for (Object arg : args) { |
| p.append(sep).debugPrint(arg); |
| sep = ", "; |
| } |
| return p.append(")").toString(); |
| } |
| |
| @SkylarkModule(name = "MockInterface", doc = "") |
| static interface MockInterface extends StarlarkValue { |
| @SkylarkCallable(name = "is_empty_interface", |
| parameters = { @Param(name = "str", type = String.class) }, |
| documented = false) |
| public Boolean isEmptyInterface(String str); |
| } |
| |
| @SkylarkModule(name = "MockSubClass", doc = "") |
| final class MockSubClass extends Mock implements MockInterface { |
| @Override |
| public Boolean isEmpty(String str) { |
| return str.isEmpty(); |
| } |
| @Override |
| public Boolean isEmptyInterface(String str) { |
| return str.isEmpty(); |
| } |
| } |
| |
| @SkylarkModule(name = "MockClassObject", documented = false, doc = "") |
| static final class MockClassObject implements ClassObject, StarlarkValue { |
| @Override |
| public Object getValue(String name) { |
| switch (name) { |
| case "field": return "a"; |
| case "nset": |
| return NestedSetBuilder.stableOrder().build(); // not a legal Starlark value |
| default: return null; |
| } |
| } |
| |
| @Override |
| public ImmutableCollection<String> getFieldNames() { |
| return ImmutableList.of("field", "nset"); |
| } |
| |
| @Override |
| public String getErrorMessageForUnknownField(String name) { |
| return null; |
| } |
| } |
| |
| @SkylarkModule(name = "ParamterizedMock", doc = "") |
| static interface ParameterizedApi<ObjectT> extends StarlarkValue { |
| @SkylarkCallable( |
| name = "method", |
| documented = false, |
| parameters = { |
| @Param(name = "foo", named = true, positional = true, type = Object.class), |
| } |
| ) |
| public ObjectT method(ObjectT o); |
| } |
| |
| static final class ParameterizedMock implements ParameterizedApi<String> { |
| @Override |
| public String method(String o) { |
| return o; |
| } |
| } |
| |
| // Verifies that a method implementation overriding a parameterized annotated interface method |
| // is still treated as skylark-callable. Concretely, method() below should be treated as |
| // callable even though its method signature isn't an *exact* match of the annotated method |
| // declaration, due to the interface's method declaration being generic. |
| @Test |
| public void testParameterizedMock() throws Exception { |
| new Scenario() |
| .update("mock", new ParameterizedMock()) |
| .setUp("result = mock.method('bar')") |
| .testLookup("result", "bar"); |
| } |
| |
| @Test |
| public void testSimpleIf() throws Exception { |
| new Scenario() |
| .setUp("def foo():", " a = 0", " x = 0", " if x: a = 5", " return a", "a = foo()") |
| .testLookup("a", 0); |
| } |
| |
| @Test |
| public void testIfPass() throws Exception { |
| new Scenario() |
| .setUp("def foo():", " a = 1", " x = True", " if x: pass", " return a", "a = foo()") |
| .testLookup("a", 1); |
| } |
| |
| @Test |
| public void testNestedIf() throws Exception { |
| executeNestedIf(0, 0, 0); |
| executeNestedIf(1, 0, 3); |
| executeNestedIf(1, 1, 5); |
| } |
| |
| private void executeNestedIf(int x, int y, int expected) throws Exception { |
| String fun = String.format("foo%s%s", x, y); |
| new Scenario() |
| .setUp( |
| "def " + fun + "():", |
| " x = " + x, |
| " y = " + y, |
| " a = 0", |
| " b = 0", |
| " if x:", |
| " if y:", |
| " a = 2", |
| " b = 3", |
| " return a + b", |
| "x = " + fun + "()") |
| .testLookup("x", expected); |
| } |
| |
| @Test |
| public void testIfElse() throws Exception { |
| executeIfElse("foo", "something", 2); |
| executeIfElse("bar", "", 3); |
| } |
| |
| private void executeIfElse(String fun, String y, int expected) throws Exception { |
| new Scenario() |
| .setUp( |
| "def " + fun + "():", |
| " y = '" + y + "'", |
| " x = 5", |
| " if x:", |
| " if y: a = 2", |
| " else: a = 3", |
| " return a", |
| "z = " + fun + "()") |
| .testLookup("z", expected); |
| } |
| |
| @Test |
| public void testIfElifElse_IfExecutes() throws Exception { |
| execIfElifElse(1, 0, 1); |
| } |
| |
| @Test |
| public void testIfElifElse_ElifExecutes() throws Exception { |
| execIfElifElse(0, 1, 2); |
| } |
| |
| @Test |
| public void testIfElifElse_ElseExecutes() throws Exception { |
| execIfElifElse(0, 0, 3); |
| } |
| |
| private void execIfElifElse(int x, int y, int v) throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " x = " + x + "", |
| " y = " + y + "", |
| " if x:", |
| " return 1", |
| " elif y:", |
| " return 2", |
| " else:", |
| " return 3", |
| "v = foo()") |
| .testLookup("v", v); |
| } |
| |
| @Test |
| public void testForOnList() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " s = ''", |
| " for i in ['hello', ' ', 'world']:", |
| " s = s + i", |
| " return s", |
| "s = foo()") |
| .testLookup("s", "hello world"); |
| } |
| |
| @Test |
| public void testForAssignmentList() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " d = ['a', 'b', 'c']", |
| " s = ''", |
| " for i in d:", |
| " s = s + i", |
| " d = ['d', 'e', 'f']", // check that we use the old list |
| " return s", |
| "s = foo()") |
| .testLookup("s", "abc"); |
| } |
| |
| @Test |
| public void testForAssignmentDict() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " d = {'a' : 1, 'b' : 2, 'c' : 3}", |
| " s = ''", |
| " for i in d:", |
| " s = s + i", |
| " d = {'d' : 1, 'e' : 2, 'f' : 3}", |
| " return s", |
| "s = func()") |
| .testLookup("s", "abc"); |
| } |
| |
| @Test |
| public void testForUpdateList() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2, 3]", |
| " for x in xs:", |
| " if x == 1:", |
| " xs.append(10)") |
| .testIfErrorContains("trying to mutate a locked object", "foo()"); |
| } |
| |
| @Test |
| public void testForUpdateDict() throws Exception { |
| new Scenario() |
| .setUp("def foo():", " d = {'a': 1, 'b': 2, 'c': 3}", " for k in d:", " d[k] *= 2") |
| .testIfErrorContains("trying to mutate a locked object", "foo()"); |
| } |
| |
| @Test |
| public void testForUnlockedAfterBreak() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2]", |
| " for x in xs:", |
| " break", |
| " xs.append(3)", |
| " return xs") |
| .testEval("foo()", "[1, 2, 3]"); |
| } |
| |
| @Test |
| public void testForNestedOnSameListStillLocked() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2]", |
| " ys = []", |
| " for x1 in xs:", |
| " for x2 in xs:", |
| " ys.append(x1 * x2)", |
| " xs.append(4)", |
| " return ys") |
| .testIfErrorContains("trying to mutate a locked object", "foo()"); |
| } |
| |
| @Test |
| public void testForNestedOnSameListErrorMessage() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2]", |
| " ys = []", |
| " for x1 in xs:", |
| " for x2 in xs:", |
| " ys.append(x1 * x2)", |
| " xs.append(4)", |
| " return ys" |
| // No file name in message, due to how test is set up. |
| ) |
| .testIfErrorContains("Object locked at the following location(s): :4:3, :5:5", "foo()"); |
| } |
| |
| @Test |
| public void testForNestedOnSameListUnlockedAtEnd() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2]", |
| " ys = []", |
| " for x1 in xs:", |
| " for x2 in xs:", |
| " ys.append(x1 * x2)", |
| " xs.append(4)", |
| " return ys") |
| .testEval("foo()", "[1, 2, 2, 4]"); |
| } |
| |
| @Test |
| public void testForNestedWithListCompGood() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2]", |
| " ys = []", |
| " for x in xs:", |
| " zs = [None for x in xs for y in (ys.append(x) or ys)]", |
| " return ys") |
| .testEval("foo()", "[1, 2, 1, 2]"); |
| } |
| @Test |
| public void testForNestedWithListCompBad() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [1, 2, 3]", |
| " ys = []", |
| " for x in xs:", |
| " zs = [None for x in xs for y in (xs.append(x) or ys)]", |
| " return ys") |
| .testIfErrorContains("trying to mutate a locked object", "foo()"); |
| } |
| |
| @Test |
| public void testForDeepUpdate() throws Exception { |
| // Check that indirectly reachable values can still be manipulated as normal. |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " xs = [['a'], ['b'], ['c']]", |
| " ys = []", |
| " for x in xs:", |
| " for y in x:", |
| " ys.append(y)", |
| " xs[2].append(x[0])", |
| " return ys", |
| "ys = foo()") |
| .testLookup("ys", StarlarkList.of(null, "a", "b", "c", "a", "b")); |
| } |
| |
| @Test |
| public void testForNotIterable() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "type 'int' is not iterable", |
| "def func():", |
| " for i in mock.value_of('1'): a = i", |
| "func()\n"); |
| } |
| |
| @Test |
| public void testForStringNotIterable() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "type 'string' is not iterable", "def func():", " for i in 'abc': a = i", "func()\n"); |
| } |
| |
| @Test |
| public void testForOnDictionary() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " d = {1: 'a', 2: 'b', 3: 'c'}", |
| " s = ''", |
| " for i in d: s = s + d[i]", |
| " return s", |
| "s = foo()") |
| .testLookup("s", "abc"); |
| } |
| |
| @Test |
| public void testBadDictKey() throws Exception { |
| new Scenario().testIfErrorContains("unhashable type: 'list'", "{ [1, 2]: [3, 4] }"); |
| } |
| |
| @Test |
| public void testForLoopReuseVariable() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " s = ''", |
| " for i in ['a', 'b']:", |
| " for i in ['c', 'd']: s = s + i", |
| " return s", |
| "s = foo()") |
| .testLookup("s", "cdcd"); |
| } |
| |
| @Test |
| public void testForLoopMultipleVariables() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " s = ''", |
| " for [i, j] in [[1, 2], [3, 4]]:", |
| " s = s + str(i) + str(j) + '.'", |
| " return s", |
| "s = foo()") |
| .testLookup("s", "12.34."); |
| } |
| |
| @Test |
| public void testForLoopBreak() throws Exception { |
| simpleFlowTest("break", 1); |
| } |
| |
| @Test |
| public void testForLoopContinue() throws Exception { |
| simpleFlowTest("continue", 10); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void simpleFlowTest(String statement, int expected) throws Exception { |
| exec( |
| "def foo():", |
| " s = 0", |
| " hit = 0", |
| " for i in range(0, 10):", |
| " s = s + 1", |
| " " + statement + "", |
| " hit = 1", |
| " return [s, hit]", |
| "x = foo()"); |
| assertThat((Iterable<Object>) lookup("x")).containsExactly(expected, 0).inOrder(); |
| } |
| |
| @Test |
| public void testForLoopBreakFromDeeperBlock() throws Exception { |
| flowFromDeeperBlock("break", 1); |
| flowFromNestedBlocks("break", 29); |
| } |
| |
| @Test |
| public void testForLoopContinueFromDeeperBlock() throws Exception { |
| flowFromDeeperBlock("continue", 5); |
| flowFromNestedBlocks("continue", 39); |
| } |
| |
| private void flowFromDeeperBlock(String statement, int expected) throws Exception { |
| exec( |
| "def foo():", |
| " s = 0", |
| " for i in range(0, 10):", |
| " if i % 2 != 0:", |
| " " + statement + "", |
| " s = s + 1", |
| " return s", |
| "x = foo()"); |
| assertThat(lookup("x")).isEqualTo(expected); |
| } |
| |
| private void flowFromNestedBlocks(String statement, int expected) throws Exception { |
| exec( |
| "def foo2():", |
| " s = 0", |
| " for i in range(1, 41):", |
| " if i % 2 == 0:", |
| " if i % 3 == 0:", |
| " if i % 5 == 0:", |
| " " + statement + "", |
| " s = s + 1", |
| " return s", |
| "y = foo2()"); |
| assertThat(lookup("y")).isEqualTo(expected); |
| } |
| |
| @Test |
| public void testNestedForLoopsMultipleBreaks() throws Exception { |
| nestedLoopsTest("break", 2, 6, 6); |
| } |
| |
| @Test |
| public void testNestedForLoopsMultipleContinues() throws Exception { |
| nestedLoopsTest("continue", 4, 20, 20); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void nestedLoopsTest(String statement, Integer outerExpected, int firstExpected, |
| int secondExpected) throws Exception { |
| exec( |
| "def foo():", |
| " outer = 0", |
| " first = 0", |
| " second = 0", |
| " for i in range(0, 5):", |
| " for j in range(0, 5):", |
| " if j == 2:", |
| " " + statement + "", |
| " first = first + 1", |
| " for k in range(0, 5):", |
| " if k == 2:", |
| " " + statement + "", |
| " second = second + 1", |
| " if i == 2:", |
| " " + statement + "", |
| " outer = outer + 1", |
| " return [outer, first, second]", |
| "x = foo()"); |
| assertThat((Iterable<Object>) lookup("x")) |
| .containsExactly(outerExpected, firstExpected, secondExpected).inOrder(); |
| } |
| |
| @Test |
| public void testForLoopBreakError() throws Exception { |
| flowStatementInsideFunction("break"); |
| flowStatementAfterLoop("break"); |
| } |
| |
| @Test |
| public void testForLoopContinueError() throws Exception { |
| flowStatementInsideFunction("continue"); |
| flowStatementAfterLoop("continue"); |
| } |
| |
| // TODO(adonovan): move this and all tests that use it to Validation tests. |
| private void assertValidationError(String expectedError, final String... lines) throws Exception { |
| SyntaxError error = assertThrows(SyntaxError.class, () -> exec(lines)); |
| assertThat(error).hasMessageThat().contains(expectedError); |
| } |
| |
| private void flowStatementInsideFunction(String statement) throws Exception { |
| assertValidationError( |
| statement + " statement must be inside a for loop", |
| // |
| "def foo():", |
| " " + statement, |
| "x = foo()"); |
| } |
| |
| private void flowStatementAfterLoop(String statement) throws Exception { |
| assertValidationError( |
| statement + " statement must be inside a for loop", |
| // |
| "def foo2():", |
| " for i in range(0, 3):", |
| " pass", |
| " " + statement, |
| "y = foo2()"); |
| } |
| |
| @Test |
| public void testStructMembersAreImmutable() throws Exception { |
| assertValidationError("cannot assign to 's.x'", "s = struct(x = 'a')", "s.x = 'b'\n"); |
| } |
| |
| @Test |
| public void testNoneAssignment() throws Exception { |
| new Scenario() |
| .setUp("def foo(x=None):", " x = 1", " x = None", " return 2", "s = foo()") |
| .testLookup("s", 2); |
| } |
| |
| @Test |
| public void testReassignment() throws Exception { |
| exec( |
| "def foo(x=None):", // |
| " x = 1", |
| " x = [1, 2]", |
| " x = 'str'", |
| " return x", |
| "s = foo()"); |
| assertThat(lookup("s")).isEqualTo("str"); |
| } |
| |
| @Test |
| public void testJavaCalls() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.is_empty('a')") |
| .testLookup("b", Boolean.FALSE); |
| } |
| |
| @Test |
| public void testJavaCallsOnSubClass() throws Exception { |
| new Scenario() |
| .update("mock", new MockSubClass()) |
| .setUp("b = mock.is_empty('a')") |
| .testLookup("b", Boolean.FALSE); |
| } |
| |
| @Test |
| public void testJavaCallsOnInterface() throws Exception { |
| new Scenario() |
| .update("mock", new MockSubClass()) |
| .setUp("b = mock.is_empty_interface('a')") |
| .testLookup("b", Boolean.FALSE); |
| } |
| |
| @Test |
| public void testJavaCallsNotSkylarkCallable() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError("'Mock' value has no field or method 'value'", "mock.value()"); |
| } |
| |
| @Test |
| public void testNoOperatorIndex() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError("type 'Mock' has no operator [](int)", "mock[2]"); |
| } |
| |
| @Test |
| public void testJavaCallsNoMethod() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError("'Mock' value has no field or method 'bad'", "mock.bad()"); |
| } |
| |
| @Test |
| public void testJavaCallsNoMethodErrorMsg() throws Exception { |
| new Scenario() |
| .testIfExactError("'int' value has no field or method 'bad'", "s = 3.bad('a', 'b', 'c')"); |
| } |
| |
| @Test |
| public void testJavaCallWithKwargs() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError( |
| "'Mock' value has no field or method 'isEmpty'", "mock.isEmpty(str='abc')"); |
| } |
| |
| @Test |
| public void testStringListDictValues() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "def func(mock):", |
| " for i, v in mock.string_list_dict().items():", |
| " modified_list = v + ['extra_string']", |
| " return modified_list", |
| "m = func(mock)") |
| .testLookup("m", StarlarkList.of(null, "b", "c", "extra_string")); |
| } |
| |
| @Test |
| public void testProxyMethodsObject() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("m = mock.proxy_methods_object()", "b = m.with_params(1, True, named=True)") |
| .testLookup("b", "with_params(1, true, false, true, false, a)"); |
| } |
| |
| @Test |
| public void testLegacyNamed() throws Exception { |
| new Scenario("--incompatible_restrict_named_params=false") |
| .update("mock", new Mock()) |
| .setUp("b = mock.legacy_method(True, legacyNamed=True, named=True)") |
| .testLookup("b", "legacy_method(true, true, true)"); |
| |
| new Scenario("--incompatible_restrict_named_params=false") |
| .update("mock", new Mock()) |
| .setUp("b = mock.legacy_method(True, True, named=True)") |
| .testLookup("b", "legacy_method(true, true, true)"); |
| |
| // Verify legacyNamed also works with proxy method objects. |
| new Scenario("--incompatible_restrict_named_params=false") |
| .update("mock", new Mock()) |
| .setUp( |
| "m = mock.proxy_methods_object()", |
| "b = m.legacy_method(True, legacyNamed=True, named=True)") |
| .testLookup("b", "legacy_method(true, true, true)"); |
| |
| new Scenario("--incompatible_restrict_named_params=false") |
| .update("mock", new Mock()) |
| .setUp("m = mock.proxy_methods_object()", "b = m.legacy_method(True, True, named=True)") |
| .testLookup("b", "legacy_method(true, true, true)"); |
| } |
| |
| /** |
| * This test verifies an error is raised when a method parameter is set both positionally and |
| * by name. |
| */ |
| @Test |
| public void testArgSpecifiedBothByNameAndPosition() throws Exception { |
| // in with_params, 'posOrNamed' is positional parameter index 2. So by specifying both |
| // posOrNamed by name and three positional parameters, there is a conflict. |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "with_params() got multiple values for argument 'posOrNamed'", |
| "mock.with_params(1, True, True, posOrNamed=True, named=True)"); |
| } |
| |
| @Test |
| public void testTooManyPositionalArgs() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "with_params() accepts no more than 3 positional arguments but got 4", |
| "mock.with_params(1, True, True, 'toomany', named=True)"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "with_params() accepts no more than 3 positional arguments but got 5", |
| "mock.with_params(1, True, True, 'toomany', 'alsotoomany', named=True)"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "is_empty() accepts no more than 1 positional argument but got 2", |
| "mock.is_empty('a', 'b')"); |
| } |
| |
| @Test |
| public void testJavaCallWithPositionalAndKwargs() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True)") |
| .testLookup("b", "with_params(1, true, false, true, false, a)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, multi=1)") |
| .testLookup("b", "with_params(1, true, false, true, false, a, 1)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, multi='abc')") |
| .testLookup("b", "with_params(1, true, false, true, false, a, abc)"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, multi=[1,2,3])") |
| .testLookup("b", "with_params(1, true, false, true, false, a, [1, 2, 3])"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "with_params() missing 1 required named argument: named", "mock.with_params(1, True)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "with_params() missing 1 required named argument: named", |
| "mock.with_params(1, True, True)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, True, named=True)") |
| .testLookup("b", "with_params(1, true, true, true, false, a)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, posOrNamed=True)") |
| .testLookup("b", "with_params(1, true, true, true, false, a)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, posOrNamed=True, optionalNamed=True)") |
| .testLookup("b", "with_params(1, true, true, true, true, a)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "with_params() got unexpected keyword argument 'posornamed' (did you mean" |
| + " 'posOrNamed'?)", |
| "mock.with_params(1, True, named=True, posornamed=True)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "with_params() got unexpected keyword argument 'n'", |
| "mock.with_params(1, True, named=True, posOrNamed=True, n=2)"); |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "in call to with_params(), parameter 'nonNoneable' cannot be None", |
| "mock.with_params(1, True, True, named=True, optionalNamed=False, nonNoneable=None)"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("") |
| .testIfExactError( |
| "in call to with_params(), parameter 'multi' got value of type 'bool', want 'string or" |
| + " int or sequence of ints or NoneType'", |
| "mock.with_params(1, True, named=True, multi=False)"); |
| |
| // We do not enforce list item parameter type constraints. |
| // Test for this behavior. |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params(1, True, named=True, multi=['a', 'b'])") |
| .testLookup("b", "with_params(1, true, false, true, false, a, [\"a\", \"b\"])"); |
| } |
| |
| @Test |
| public void testNoJavaCallsWithoutSkylark() throws Exception { |
| new Scenario() |
| .testIfExactError("'int' value has no field or method 'to_string'", "s = 3.to_string()"); |
| } |
| |
| @Test |
| public void testStructAccess() throws Exception { |
| new Scenario().update("mock", new Mock()).setUp("v = mock.struct_field").testLookup("v", "a"); |
| } |
| |
| @Test |
| public void testStructAccessAsFuncallNonCallable() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError("'string' object is not callable", "v = mock.struct_field()"); |
| } |
| |
| @Test |
| public void testSelfCall() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock('bestmock')") |
| .testLookup("v", "I'm a mock named bestmock"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("mockfunction = mock", "v = mockfunction('bestmock')") |
| .testLookup("v", "I'm a mock named bestmock"); |
| |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfErrorContains( |
| "in call to MockFn(), parameter 'pos' got value of type 'int', want 'string'", |
| "v = mock(1)"); |
| } |
| |
| @Test |
| public void testStructAccessAsFuncall() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock.struct_field_callable()") |
| .testLookup("v", "foobar"); |
| } |
| |
| @Test |
| public void testCallingInterruptedStructField() throws Exception { |
| update("mock", new Mock()); |
| assertThrows(InterruptedException.class, () -> eval("mock.interrupted_struct_field()")); |
| } |
| |
| @Test |
| public void testCallingInterruptedFunction() throws Exception { |
| update("interrupted_function", new BuiltinCallable(this, "interrupted_function")); |
| assertThrows(InterruptedException.class, () -> eval("interrupted_function()")); |
| } |
| |
| @Test |
| public void testCallingMethodThatRaisesUncheckedException() throws Exception { |
| update("mock", new Mock()); |
| assertThrows(InternalError.class, () -> eval("mock.raise_unchecked_exception()")); |
| } |
| |
| @Test |
| public void testJavaFunctionWithExtraInterpreterParams() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock.with_extra()") |
| .testLookup("v", "with_extra(1)"); |
| } |
| |
| @Test |
| public void testStructFieldWithExtraInterpreterParams() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock.struct_field_with_extra") |
| .testLookup("v", "struct_field_with_extra(true)"); |
| } |
| |
| @Test |
| public void testJavaFunctionWithParamsAndExtraInterpreterParams() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_params_and_extra(1, True, named=True)") |
| .testLookup("b", "with_params_and_extra(1, true, false, true, false, a, 1)"); |
| } |
| |
| @Test |
| public void testJavaFunctionWithExtraArgsAndThread() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_args_and_thread(1, True, 'extraArg1', 'extraArg2', named=True)") |
| .testLookup("b", "with_args_and_thread(1, true, true, args(extraArg1, extraArg2))"); |
| |
| // Use an args list. |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "myargs = ['extraArg2']", |
| "b = mock.with_args_and_thread(1, True, 'extraArg1', named=True, *myargs)") |
| .testLookup("b", "with_args_and_thread(1, true, true, args(extraArg1, extraArg2))"); |
| } |
| |
| @Test |
| public void testJavaFunctionWithExtraKwargs() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_kwargs(True, extraKey1=True, named=True, extraKey2='x')") |
| .testLookup("b", "with_kwargs(true, true, kwargs(extraKey1=true, extraKey2=x))"); |
| |
| // Use a kwargs dict. |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "mykwargs = {'extraKey2':'x', 'named':True}", |
| "b = mock.with_kwargs(True, extraKey1=True, **mykwargs)") |
| .testLookup("b", "with_kwargs(true, true, kwargs(extraKey1=true, extraKey2=x))"); |
| } |
| |
| @Test |
| public void testJavaFunctionWithArgsAndKwargs() throws Exception { |
| // Foo is used positionally |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_args_and_kwargs('foo', 'bar', 'baz', extraKey1=True, extraKey2='x')") |
| .testLookup( |
| "b", "with_args_and_kwargs(foo, args(bar, baz), kwargs(extraKey1=true, extraKey2=x))"); |
| |
| // Use an args list and a kwargs dict |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "mykwargs = {'extraKey1':True}", |
| "myargs = ['baz']", |
| "b = mock.with_args_and_kwargs('foo', 'bar', extraKey2='x', *myargs, **mykwargs)") |
| .testLookup( |
| "b", "with_args_and_kwargs(foo, args(bar, baz), kwargs(extraKey2=x, extraKey1=true))"); |
| |
| // Foo is used by name |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_args_and_kwargs(foo='foo', extraKey1=True)") |
| .testLookup("b", "with_args_and_kwargs(foo, args(), kwargs(extraKey1=true))"); |
| |
| // Empty args and kwargs. |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("b = mock.with_args_and_kwargs('foo')") |
| .testLookup("b", "with_args_and_kwargs(foo, args(), kwargs())"); |
| } |
| |
| @Test |
| public void testProxyMethodsObjectWithArgsAndKwargs() throws Exception { |
| // Foo is used positionally |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "m = mock.proxy_methods_object()", |
| "b = m.with_args_and_kwargs('foo', 'bar', 'baz', extraKey1=True, extraKey2='x')") |
| .testLookup( |
| "b", "with_args_and_kwargs(foo, args(bar, baz), kwargs(extraKey1=true, extraKey2=x))"); |
| |
| // Use an args list and a kwargs dict |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "mykwargs = {'extraKey1':True}", |
| "myargs = ['baz']", |
| "m = mock.proxy_methods_object()", |
| "b = m.with_args_and_kwargs('foo', 'bar', extraKey2='x', *myargs, **mykwargs)") |
| .testLookup( |
| "b", "with_args_and_kwargs(foo, args(bar, baz), kwargs(extraKey2=x, extraKey1=true))"); |
| |
| // Foo is used by name |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "m = mock.proxy_methods_object()", |
| "b = m.with_args_and_kwargs(foo='foo', extraKey1=True)") |
| .testLookup("b", "with_args_and_kwargs(foo, args(), kwargs(extraKey1=true))"); |
| |
| // Empty args and kwargs. |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("m = mock.proxy_methods_object()", "b = m.with_args_and_kwargs('foo')") |
| .testLookup("b", "with_args_and_kwargs(foo, args(), kwargs())"); |
| } |
| |
| @Test |
| public void testStructAccessOfMethod() throws Exception { |
| new Scenario().update("mock", new Mock()).testExpression("type(mock.function)", "function"); |
| new Scenario().update("mock", new Mock()).testExpression("mock.function()", "a"); |
| } |
| |
| @Test |
| public void testStructAccessTypo() throws Exception { |
| new Scenario() |
| .update("mock", new MockClassObject()) |
| .testIfExactError( |
| "'MockClassObject' value has no field or method 'fild' (did you mean 'field'?)", |
| "mock.fild"); |
| } |
| |
| @Test |
| public void testStructAccessType_nonClassObject() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testIfExactError( |
| "'Mock' value has no field or method 'sturct_field' (did you mean 'struct_field'?)", |
| "v = mock.sturct_field"); |
| } |
| |
| @Test |
| public void testJavaFunctionReturnsIllegalValue() throws Exception { |
| update("mock", new Mock()); |
| IllegalArgumentException e = |
| assertThrows(IllegalArgumentException.class, () -> eval("mock.return_bad()")); |
| assertThat(e) |
| .hasMessageThat() |
| .contains( |
| "cannot expose internal type to Starlark: class" |
| + " com.google.devtools.build.lib.syntax.SkylarkEvaluationTest$Bad"); |
| } |
| |
| @Test |
| public void testJavaFunctionReturnsNullFails() throws Exception { |
| update("mock", new Mock()); |
| IllegalStateException e = |
| assertThrows(IllegalStateException.class, () -> eval("mock.nullfunc_failing('abc', 1)")); |
| assertThat(e).hasMessageThat().contains("method invocation returned None"); |
| } |
| |
| @Test |
| public void testClassObjectAccess() throws Exception { |
| new Scenario() |
| .update("mock", new MockClassObject()) |
| .setUp("v = mock.field") |
| .testLookup("v", "a"); |
| } |
| |
| @Test |
| public void testUnionSet() throws Exception { |
| new Scenario("--incompatible_depset_union=false") |
| .testExpression("str(depset([1, 3]) | depset([1, 2]))", "depset([1, 2, 3])") |
| .testExpression("str(depset([1, 2]) | [1, 3])", "depset([1, 2, 3])") |
| .testIfExactError("unsupported binary operation: int | bool", "2 | False"); |
| } |
| |
| @Test |
| public void testSetIsNotIterable() throws Exception { |
| new Scenario() |
| .testIfErrorContains("not iterable", "list(depset(['a', 'b']))") |
| .testIfErrorContains("not iterable", "max(depset([1, 2, 3]))") |
| .testIfErrorContains( |
| "unsupported binary operation: int in depset", "1 in depset([1, 2, 3])") |
| .testIfErrorContains("not iterable", "sorted(depset(['a', 'b']))") |
| .testIfErrorContains("not iterable", "tuple(depset(['a', 'b']))") |
| .testIfErrorContains("not iterable", "[x for x in depset()]") |
| .testIfErrorContains("not iterable", "len(depset(['a']))"); |
| } |
| |
| @Test |
| public void testFieldReturnsNestedSet() throws Exception { |
| update("mock", new MockClassObject()); |
| IllegalArgumentException e = |
| assertThrows(IllegalArgumentException.class, () -> eval("mock.nset")); |
| assertThat(e) |
| .hasMessageThat() |
| .contains( |
| "invalid Starlark value: class" |
| + " com.google.devtools.build.lib.collect.nestedset.NestedSet"); |
| } |
| |
| @Test |
| public void testJavaFunctionReturnsNone() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock.nullfunc_working()") |
| .testLookup("v", Starlark.NONE); |
| } |
| |
| @Test |
| public void testVoidJavaFunctionReturnsNone() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp("v = mock.voidfunc()") |
| .testLookup("v", Starlark.NONE); |
| } |
| |
| @Test |
| public void testAugmentedAssignment() throws Exception { |
| new Scenario() |
| .setUp("def f1(x):", " x += 1", " return x", "", "foo = f1(41)") |
| .testLookup("foo", 42); |
| } |
| |
| @Test |
| public void testAugmentedAssignmentHasNoSideEffects() throws Exception { |
| // Check object position. |
| new Scenario() |
| .setUp( |
| "counter = [0]", |
| "value = [1, 2]", |
| "", |
| "def f():", |
| " counter[0] = counter[0] + 1", |
| " return value", |
| "", |
| "f()[1] += 1") // `f()` should be called only once here |
| .testLookup("counter", StarlarkList.of(null, 1)); |
| |
| // Check key position. |
| new Scenario() |
| .setUp( |
| "counter = [0]", |
| "value = [1, 2]", |
| "", |
| "def f():", |
| " counter[0] = counter[0] + 1", |
| " return 1", |
| "", |
| "value[f()] += 1") // `f()` should be called only once here |
| .testLookup("counter", StarlarkList.of(null, 1)); |
| } |
| |
| @Test |
| public void testInvalidAugmentedAssignment_ListExpression() throws Exception { |
| assertValidationError( |
| "cannot perform augmented assignment on a list or tuple expression", |
| // |
| "def f(a, b):", |
| " [a, b] += []", |
| "f(1, 2)"); |
| } |
| |
| |
| @Test |
| public void testInvalidAugmentedAssignment_NotAnLValue() throws Exception { |
| assertValidationError( |
| "cannot assign to 'x + 1'", |
| // |
| "x + 1 += 2"); |
| } |
| |
| @Test |
| public void testAssignmentEvaluationOrder() throws Exception { |
| new Scenario() |
| .setUp( |
| "ordinary = []", |
| "augmented = []", |
| "value = [1, 2]", |
| "", |
| "def f(record):", |
| " record.append('f')", |
| " return value", |
| "", |
| "def g(record):", |
| " record.append('g')", |
| " return value", |
| "", |
| "f(ordinary)[0] = g(ordinary)[1]", |
| "f(augmented)[0] += g(augmented)[1]") |
| .testLookup("ordinary", StarlarkList.of(null, "g", "f")) // This order is consistent |
| .testLookup("augmented", StarlarkList.of(null, "f", "g")); // with Python |
| } |
| |
| @Test |
| public void testDictComprehensions_IterationOrder() throws Exception { |
| new Scenario() |
| .setUp( |
| "def foo():", |
| " d = {x : x for x in ['c', 'a', 'b']}", |
| " s = ''", |
| " for a in d:", |
| " s += a", |
| " return s", |
| "s = foo()") |
| .testLookup("s", "cab"); |
| } |
| |
| @Test |
| public void testDotExpressionOnNonStructObject() throws Exception { |
| new Scenario() |
| .testIfExactError("'string' value has no field or method 'field'", "x = 'a'.field"); |
| } |
| |
| @Test |
| public void testPlusEqualsOnListMutating() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " l1 = [1, 2]", |
| " l2 = l1", |
| " l2 += [3, 4]", |
| " return l1, l2", |
| "lists = str(func())") |
| .testLookup("lists", "([1, 2, 3, 4], [1, 2, 3, 4])"); |
| |
| // The same but with += after an IndexExpression |
| new Scenario() |
| .setUp( |
| "def func():", |
| " l = [1, 2]", |
| " d = {0: l}", |
| " d[0] += [3, 4]", |
| " return l, d[0]", |
| "lists = str(func())") |
| .testLookup("lists", "([1, 2, 3, 4], [1, 2, 3, 4])"); |
| } |
| |
| @Test |
| public void testPlusEqualsOnTuple() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " t1 = (1, 2)", |
| " t2 = t1", |
| " t2 += (3, 4)", |
| " return t1, t2", |
| "tuples = func()") |
| .testLookup("tuples", Tuple.of(Tuple.of(1, 2), Tuple.of(1, 2, 3, 4))); |
| } |
| |
| @Test |
| public void testPlusOnDictDeprecated() throws Exception { |
| new Scenario() |
| .testIfErrorContains("unsupported binary operation: dict + dict", "{1: 2} + {3: 4}"); |
| new Scenario() |
| .testIfErrorContains( |
| "unsupported binary operation: dict + dict", |
| "def func():", |
| " d = {1: 2}", |
| " d += {3: 4}", |
| "func()"); |
| } |
| |
| @Test |
| public void testDictAssignmentAsLValue() throws Exception { |
| new Scenario() |
| .setUp("def func():", " d = {'a' : 1}", " d['b'] = 2", " return d", "d = func()") |
| .testLookup("d", ImmutableMap.of("a", 1, "b", 2)); |
| } |
| |
| @Test |
| public void testNestedDictAssignmentAsLValue() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " d = {'a' : 1}", |
| " e = {'d': d}", |
| " e['d']['b'] = 2", |
| " return e", |
| "e = func()") |
| .testLookup("e", ImmutableMap.of("d", ImmutableMap.of("a", 1, "b", 2))); |
| } |
| |
| @Test |
| public void testListAssignmentAsLValue() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " a = [1, 2]", |
| " a[1] = 3", |
| " a[-2] = 4", |
| " return a", |
| "a = str(func())") |
| .testLookup("a", "[4, 3]"); |
| } |
| |
| @Test |
| public void testNestedListAssignmentAsLValue() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", |
| " d = [1, 2]", |
| " e = [3, d]", |
| " e[1][1] = 4", |
| " return e", |
| "e = str(func())") |
| .testLookup("e", "[3, [1, 4]]"); |
| } |
| |
| @Test |
| public void testDictTupleAssignmentAsLValue() throws Exception { |
| new Scenario() |
| .setUp( |
| "def func():", " d = {'a' : 1}", " d['b'], d['c'] = 2, 3", " return d", "d = func()") |
| .testLookup("d", ImmutableMap.of("a", 1, "b", 2, "c", 3)); |
| } |
| |
| @Test |
| public void testDictItemPlusEqual() throws Exception { |
| new Scenario() |
| .setUp("def func():", " d = {'a' : 2}", " d['a'] += 3", " return d", "d = func()") |
| .testLookup("d", ImmutableMap.of("a", 5)); |
| } |
| |
| @Test |
| public void testDictAssignmentAsLValueSideEffects() throws Exception { |
| new Scenario() |
| .setUp("def func(d):", " d['b'] = 2", "d = {'a' : 1}", "func(d)") |
| .testLookup("d", Dict.of((Mutability) null, "a", 1, "b", 2)); |
| } |
| |
| @Test |
| public void testAssignmentToListInDictSideEffect() throws Exception { |
| new Scenario() |
| .setUp("l = [1, 2]", "d = {0: l}", "d[0].append(3)") |
| .testLookup("l", StarlarkList.of(null, 1, 2, 3)); |
| } |
| |
| @Test |
| public void testUserFunctionKeywordArgs() throws Exception { |
| new Scenario() |
| .setUp("def foo(a, b, c):", " return a + b + c", "s = foo(1, c=2, b=3)") |
| .testLookup("s", 6); |
| } |
| |
| @Test |
| public void testFunctionCallOrdering() throws Exception { |
| new Scenario() |
| .setUp("def func(): return foo() * 2", "def foo(): return 2", "x = func()") |
| .testLookup("x", 4); |
| } |
| |
| @Test |
| public void testFunctionCallBadOrdering() throws Exception { |
| new Scenario() |
| .testIfErrorContains( |
| "global variable 'foo' is referenced before assignment.", |
| "def func(): return foo() * 2", |
| "x = func()", |
| "def foo(): return 2"); |
| } |
| |
| @Test |
| public void testLocalVariableDefinedBelow() throws Exception { |
| new Scenario() |
| .setUp( |
| "def beforeEven(li):", // returns the value before the first even number |
| " for i in li:", |
| " if i % 2 == 0:", |
| " return a", |
| " else:", |
| " a = i", |
| "res = beforeEven([1, 3, 4, 5])") |
| .testLookup("res", 3); |
| } |
| |
| @Test |
| public void testShadowisNotInitialized() throws Exception { |
| new Scenario() |
| .testIfErrorContains( |
| /* error message */ "local variable 'gl' is referenced before assignment", |
| "gl = 5", |
| "def foo():", |
| " if False: gl = 2", |
| " return gl", |
| "res = foo()"); |
| } |
| |
| @Test |
| public void testShadowBuiltin() throws Exception { |
| new Scenario() |
| .testIfErrorContains( |
| "global variable 'len' is referenced before assignment", |
| "x = len('abc')", |
| "len = 2", |
| "y = x + len"); |
| } |
| |
| @Test |
| public void testFunctionCallRecursion() throws Exception { |
| new Scenario() |
| .testIfErrorContains( |
| "function 'f' called recursively", |
| "def main():", |
| " f(5)", |
| "def f(n):", |
| " if n > 0: g(n - 1)", |
| "def g(n):", |
| " if n > 0: f(n - 1)", |
| "main()"); |
| } |
| |
| @Test |
| // TODO(adonovan): move to Validation tests. |
| public void testTypo() throws Exception { |
| assertValidationError( |
| "name 'my_variable' is not defined (did you mean 'myVariable'?)", |
| // |
| "myVariable = 2", |
| "x = my_variable + 1"); |
| } |
| |
| @Test |
| public void testNoneTrueFalseInSkylark() throws Exception { |
| new Scenario() |
| .setUp("a = None", "b = True", "c = False") |
| .testLookup("a", Starlark.NONE) |
| .testLookup("b", Boolean.TRUE) |
| .testLookup("c", Boolean.FALSE); |
| } |
| |
| @Test |
| public void testHasattrMethods() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "a = hasattr(mock, 'struct_field')", |
| "b = hasattr(mock, 'function')", |
| "c = hasattr(mock, 'is_empty')", |
| "d = hasattr('str', 'replace')", |
| "e = hasattr(mock, 'other')\n") |
| .testLookup("a", Boolean.TRUE) |
| .testLookup("b", Boolean.TRUE) |
| .testLookup("c", Boolean.TRUE) |
| .testLookup("d", Boolean.TRUE) |
| .testLookup("e", Boolean.FALSE); |
| } |
| |
| @Test |
| public void testGetattrMethods() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .setUp( |
| "a = str(getattr(mock, 'struct_field', 'no'))", |
| "b = str(getattr(mock, 'function', 'no'))", |
| "c = str(getattr(mock, 'is_empty', 'no'))", |
| "d = str(getattr('str', 'replace', 'no'))", |
| "e = str(getattr(mock, 'other', 'no'))\n") |
| .testLookup("a", "a") |
| .testLookup("b", "<built-in function function>") |
| .testLookup("c", "<built-in function is_empty>") |
| .testLookup("d", "<built-in function replace>") |
| .testLookup("e", "no"); |
| } |
| |
| @Test |
| public void testListAnTupleConcatenationDoesNotWorkInSkylark() throws Exception { |
| new Scenario() |
| .testIfExactError("unsupported binary operation: list + tuple", "[1, 2] + (3, 4)"); |
| } |
| |
| @Test |
| public void testCannotCreateMixedListInSkylark() throws Exception { |
| new Scenario().testExactOrder("['a', 'b', 1, 2]", "a", "b", 1, 2); |
| } |
| |
| @Test |
| public void testCannotConcatListInSkylarkWithDifferentGenericTypes() throws Exception { |
| new Scenario().testExactOrder("[1, 2] + ['a', 'b']", 1, 2, "a", "b"); |
| } |
| |
| @Test |
| public void testConcatEmptyListWithNonEmptyWorks() throws Exception { |
| new Scenario().testExactOrder("[] + ['a', 'b']", "a", "b"); |
| } |
| |
| @Test |
| public void testFormatStringWithTuple() throws Exception { |
| new Scenario().setUp("v = '%s%s' % ('a', 1)").testLookup("v", "a1"); |
| } |
| |
| @Test |
| public void testSingletonTuple() throws Exception { |
| new Scenario().testExactOrder("(1,)", 1); |
| } |
| |
| @Test |
| public void testDirFindsClassObjectFields() throws Exception { |
| new Scenario() |
| .update("mock", new MockClassObject()) |
| .testExactOrder("dir(mock)", "field", "nset"); |
| } |
| |
| @Test |
| public void testDirFindsJavaObjectStructFieldsAndMethods() throws Exception { |
| new Scenario() |
| .update("mock", new Mock()) |
| .testExactOrder( |
| "dir(mock)", |
| "function", |
| "interrupted_struct_field", |
| "is_empty", |
| "legacy_method", |
| "nullfunc_failing", |
| "nullfunc_working", |
| "proxy_methods_object", |
| "raise_unchecked_exception", |
| "return_bad", |
| "string", |
| "string_list", |
| "string_list_dict", |
| "struct_field", |
| "struct_field_callable", |
| "struct_field_with_extra", |
| "value_of", |
| "voidfunc", |
| "with_args_and_kwargs", |
| "with_args_and_thread", |
| "with_extra", |
| "with_kwargs", |
| "with_params", |
| "with_params_and_extra"); |
| } |
| |
| @Test |
| public void testStrNativeInfo() throws Exception { |
| new Scenario() |
| .update("mock", new NativeInfoMock()) |
| .testEval( |
| "str(mock)", |
| "'struct(struct_field_callable = <built-in function foobar>, struct_field_none = None, " |
| + "struct_field_string = \"a\")'"); |
| } |
| |
| @Test |
| public void testNativeInfoAttrs() throws Exception { |
| new Scenario() |
| .update("mock", new NativeInfoMock()) |
| .testEval( |
| "dir(mock)", |
| "['callable_string', 'struct_field_callable', 'struct_field_none', " |
| + "'struct_field_string', 'to_json', 'to_proto']") |
| .testExpression("str(mock.to_json)", "<built-in function to_json>") |
| .testExpression("str(getattr(mock, 'to_json'))", "<built-in function to_json>"); |
| } |
| |
| @Test |
| public void testPrint() throws Exception { |
| // TODO(fwe): cannot be handled by current testing suite |
| setFailFast(false); |
| exec("print('hello')"); |
| assertContainsDebug("hello"); |
| exec("print('a', 'b')"); |
| assertContainsDebug("a b"); |
| exec("print('a', 'b', sep='x')"); |
| assertContainsDebug("axb"); |
| } |
| |
| @Test |
| public void testPrintBadKwargs() throws Exception { |
| new Scenario() |
| .testIfErrorContains( |
| "print() got unexpected keyword argument 'end'", "print(end='x', other='y')"); |
| } |
| |
| @Test |
| public void testConditionalExpressionAtToplevel() throws Exception { |
| new Scenario().setUp("x = 1 if 2 else 3").testLookup("x", 1); |
| } |
| |
| @Test |
| public void testConditionalExpressionInFunction() throws Exception { |
| new Scenario() |
| .setUp("def foo(a, b, c): return a+b if c else a-b\n") |
| .testExpression("foo(23, 5, 0)", 18); |
| } |
| |
| // This class extends NativeInfo (which provides @SkylarkCallable-annotated fields) |
| // with additional fields from a map. The only production code that currently |
| // does that is ToolchainInfo and its subclasses. |
| @SkylarkModule(name = "SkylarkClassObjectWithSkylarkCallables", doc = "") |
| private static final class SkylarkClassObjectWithSkylarkCallables extends NativeInfo { |
| |
| static final NativeProvider<SkylarkClassObjectWithSkylarkCallables> CONSTRUCTOR = |
| new NativeProvider<SkylarkClassObjectWithSkylarkCallables>( |
| SkylarkClassObjectWithSkylarkCallables.class, "struct_with_skylark_callables") {}; |
| |
| // A function that returns "fromValues". |
| Object returnFromValues = |
| new StarlarkCallable() { |
| @Override |
| public String getName() { |
| return "returnFromValues"; |
| } |
| |
| @Override |
| public Object fastcall(StarlarkThread thread, Object[] positional, Object[] named) { |
| return "fromValues"; |
| } |
| }; |
| |
| final Map<String, Object> fields = |
| ImmutableMap.of( |
| "values_only_field", |
| "fromValues", |
| "values_only_method", |
| returnFromValues, |
| "collision_field", |
| "fromValues", |
| "collision_method", |
| returnFromValues); |
| |
| SkylarkClassObjectWithSkylarkCallables() { |
| super(CONSTRUCTOR, Location.BUILTIN); |
| } |
| |
| @Override |
| public Object getValue(String name) throws EvalException { |
| Object x = fields.get(name); |
| return x != null ? x : super.getValue(name); |
| } |
| |
| @Override |
| public ImmutableCollection<String> getFieldNames() { |
| return ImmutableSet.<String>builder() |
| .addAll(fields.keySet()) |
| .addAll(super.getFieldNames()) |
| .build(); |
| } |
| |
| @SkylarkCallable(name = "callable_only_field", documented = false, structField = true) |
| public String getCallableOnlyField() { |
| return "fromSkylarkCallable"; |
| } |
| |
| @SkylarkCallable(name = "callable_only_method", documented = false, structField = false) |
| public String getCallableOnlyMethod() { |
| return "fromSkylarkCallable"; |
| } |
| |
| @SkylarkCallable(name = "collision_field", documented = false, structField = true) |
| public String getCollisionField() { |
| return "fromSkylarkCallable"; |
| } |
| |
| @SkylarkCallable(name = "collision_method", documented = false, structField = false) |
| public String getCollisionMethod() { |
| return "fromSkylarkCallable"; |
| } |
| } |
| |
| @Test |
| public void testStructFieldDefinedOnlyInValues() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .setUp("v = val.values_only_field") |
| .testLookup("v", "fromValues"); |
| } |
| |
| @Test |
| public void testStructMethodDefinedOnlyInValues() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .setUp("v = val.values_only_method()") |
| .testLookup("v", "fromValues"); |
| } |
| |
| @Test |
| public void testStructFieldDefinedOnlyInSkylarkCallable() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .setUp("v = val.callable_only_field") |
| .testLookup("v", "fromSkylarkCallable"); |
| } |
| |
| @Test |
| public void testStructMethodDefinedOnlyInSkylarkCallable() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .setUp("v = val.callable_only_method()") |
| .testLookup("v", "fromSkylarkCallable"); |
| } |
| |
| |
| @Test |
| public void testStructMethodDefinedInValuesAndSkylarkCallable() throws Exception { |
| // This test exercises the resolution of ambiguity between @SkylarkCallable-annotated |
| // fields and those reported by ClassObject.getValue. |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .setUp("v = val.collision_method()") |
| .testLookup("v", "fromSkylarkCallable"); |
| } |
| |
| @Test |
| public void testStructFieldNotDefined() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .testIfExactError( |
| // TODO(bazel-team): This should probably list callable_only_method as well. |
| "'struct_with_skylark_callables' value has no field or method 'nonexistent_field'\n" |
| + "Available attributes: callable_only_field, collision_field, collision_method, " |
| + "values_only_field, values_only_method", |
| "v = val.nonexistent_field"); |
| } |
| |
| @Test |
| public void testStructMethodNotDefined() throws Exception { |
| new Scenario() |
| .update("val", new SkylarkClassObjectWithSkylarkCallables()) |
| .testIfExactError( |
| "'struct_with_skylark_callables' value has no field or method 'nonexistent_method'\n" |
| + "Available attributes: callable_only_field, collision_field, collision_method, " |
| + "values_only_field, values_only_method", |
| "v = val.nonexistent_method()"); |
| } |
| |
| @Test |
| public void testListComprehensionsShadowGlobalVariable() throws Exception { |
| exec( |
| "a = 18", // |
| "def foo():", |
| " b = [a for a in range(3)]", |
| " return a", |
| "x = foo()"); |
| assertThat(lookup("x")).isEqualTo(18); |
| } |
| |
| @Test |
| public void testComprehensionsAreLocal() throws Exception { |
| // Regression test for https://github.com/bazelbuild/starlark/issues/92. |
| exec( |
| "x = 1", // this global binding is not affected (even temporarily) by the comprehension |
| "def f():", |
| " return x", |
| "y = [f() for x in [2]][0]"); |
| assertThat(lookup("y")).isEqualTo(1); |
| } |
| |
| @Test |
| public void testAnalysisFailureInfo() throws Exception { |
| AnalysisFailure cause = new AnalysisFailure(Label.create("test", "test"), "ErrorMessage"); |
| |
| AnalysisFailureInfo info = AnalysisFailureInfo.forAnalysisFailures(ImmutableList.of(cause)); |
| |
| new Scenario() |
| .update("val", info) |
| .setUp( |
| "causes = val.causes", |
| "label = causes.to_list()[0].label", |
| "message = causes.to_list()[0].message") |
| .testLookup("label", Label.create("test", "test")) |
| .testLookup("message", "ErrorMessage"); |
| } |
| |
| @Test |
| public void testFunctionEvaluatedBeforeArguments() throws Exception { |
| // ''.nonesuch must be evaluated (and fail) before f(). |
| new Scenario() |
| .testIfErrorContains( |
| "'string' value has no field or method 'nonesuch'", |
| "def f(): x = 1//0", |
| "''.nonesuch(f())"); |
| } |
| } |
