| // Copyright 2006 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 com.google.common.base.Joiner; |
| import com.google.devtools.build.lib.events.Event; |
| import com.google.devtools.build.lib.testutil.MoreAsserts; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for StarlarkFile. */ |
| // TODO(adonovan): move tests of parser into ParserTest |
| // and tests of evaluator into Starlark scripts. |
| @RunWith(JUnit4.class) |
| public class StarlarkFileTest { |
| |
| private static StarlarkThread newThread() { |
| return StarlarkThread.builder(Mutability.create("test")).useDefaultSemantics().build(); |
| } |
| |
| /** |
| * Parses the contents of the specified string (using 'foo.star' as the apparent filename) and |
| * returns the AST. Resets the error handler beforehand. |
| */ |
| private static StarlarkFile parseFile(String... lines) { |
| String src = Joiner.on("\n").join(lines); |
| ParserInput input = ParserInput.create(src, "foo.star"); |
| return StarlarkFile.parse(input); |
| } |
| |
| @Test |
| public void testExecuteBuildFileOK() throws Exception { |
| StarlarkFile file = |
| parseFile( |
| "# a file in the build language", |
| "", |
| "x = [1,2,'foo',4] + [1,2, \"%s%d\" % ('foo', 1)]"); |
| StarlarkThread thread = newThread(); |
| Module module = thread.getGlobals(); |
| EvalUtils.exec(file, module, thread); |
| |
| // Test final environment is correctly modified: |
| // |
| // input1.BUILD contains: |
| // x = [1,2,'foo',4] + [1,2, "%s%d" % ('foo', 1)] |
| assertThat(thread.getGlobals().lookup("x")) |
| .isEqualTo(StarlarkList.of(/*mutability=*/ null, 1, 2, "foo", 4, 1, 2, "foo1")); |
| } |
| |
| @Test |
| public void testExecException() throws Exception { |
| StarlarkFile file = parseFile("x = 1", "y = [2,3]", "", "z = x + y"); |
| |
| StarlarkThread thread = newThread(); |
| Module module = thread.getGlobals(); |
| try { |
| EvalUtils.exec(file, module, thread); |
| throw new AssertionError("execution succeeded unexpectedly"); |
| } catch (EvalException ex) { |
| assertThat(ex.getMessage()).contains("unsupported binary operation: int + list"); |
| assertThat(ex.getLocation().line()).isEqualTo(4); |
| } |
| } |
| |
| @Test |
| public void testParsesFineWithNewlines() throws Exception { |
| StarlarkFile file = parseFile("foo()", "bar()", "something = baz()", "bar()"); |
| assertThat(file.getStatements()).hasSize(4); |
| } |
| |
| @Test |
| public void testFailsIfNewlinesAreMissing() throws Exception { |
| StarlarkFile file = parseFile("foo() bar() something = baz() bar()"); |
| |
| Event event = |
| MoreAsserts.assertContainsEvent(file.errors(), "syntax error at \'bar\': expected newline"); |
| assertThat(event.getLocation().toString()).isEqualTo("foo.star:1:7"); |
| } |
| |
| @Test |
| public void testImplicitStringConcatenationFails() throws Exception { |
| StarlarkFile file = parseFile("a = 'foo' 'bar'"); |
| Event event = |
| MoreAsserts.assertContainsEvent( |
| file.errors(), "Implicit string concatenation is forbidden, use the + operator"); |
| assertThat(event.getLocation().toString()).isEqualTo("foo.star:1:10"); |
| } |
| |
| @Test |
| public void testImplicitStringConcatenationAcrossLinesIsIllegal() throws Exception { |
| StarlarkFile file = parseFile("a = 'foo'\n 'bar'"); |
| |
| Event event = MoreAsserts.assertContainsEvent(file.errors(), "indentation error"); |
| assertThat(event.getLocation().toString()).isEqualTo("foo.star:2:2"); |
| } |
| } |