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// 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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.packages.NativeClassObjectConstructor;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import com.google.devtools.build.lib.syntax.EvalUtils.ComparisonException;
import com.google.devtools.build.lib.syntax.SkylarkList.MutableList;
import com.google.devtools.build.lib.syntax.SkylarkList.Tuple;
import com.google.devtools.build.lib.syntax.util.EvaluationTestCase;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Test properties of the evaluator's datatypes and utility functions
* without actually creating any parse trees.
*/
@RunWith(JUnit4.class)
public class EvalUtilsTest extends EvaluationTestCase {
private static MutableList<Object> makeList(Environment env) {
return MutableList.<Object>of(env, 1, 2, 3);
}
private static SkylarkDict<Object, Object> makeDict(Environment env) {
return SkylarkDict.<Object, Object>of(env, 1, 1, 2, 2);
}
@Test
public void testEmptyStringToIterable() throws Exception {
assertThat(EvalUtils.toIterable("", null)).isEmpty();
}
@Test
public void testStringToIterable() throws Exception {
assertThat(EvalUtils.toIterable("abc", null)).hasSize(3);
}
@Test
public void testSize() throws Exception {
assertThat(EvalUtils.size("abc")).isEqualTo(3);
assertThat(EvalUtils.size(ImmutableMap.of(1, 2, 3, 4))).isEqualTo(2);
assertThat(EvalUtils.size(SkylarkList.Tuple.of(1, 2, 3))).isEqualTo(3);
SkylarkNestedSet set = SkylarkNestedSet.of(
Object.class,
NestedSetBuilder.stableOrder().add(1).add(2).add(3).build());
assertThat(EvalUtils.size(set)).isEqualTo(3);
assertThat(EvalUtils.size(ImmutableList.of(1, 2, 3))).isEqualTo(3);
}
/** MockClassA */
@SkylarkModule(name = "MockClassA", doc = "MockClassA")
public static class MockClassA {
}
/** MockClassB */
public static class MockClassB extends MockClassA {
}
@Test
public void testDataTypeNames() throws Exception {
assertEquals("string", EvalUtils.getDataTypeName("foo"));
assertEquals("int", EvalUtils.getDataTypeName(3));
assertEquals("tuple", EvalUtils.getDataTypeName(Tuple.of(1, 2, 3)));
assertEquals("list", EvalUtils.getDataTypeName(makeList(null)));
assertEquals("dict", EvalUtils.getDataTypeName(makeDict(null)));
assertEquals("NoneType", EvalUtils.getDataTypeName(Runtime.NONE));
assertEquals("MockClassA", EvalUtils.getDataTypeName(new MockClassA()));
assertEquals("MockClassA", EvalUtils.getDataTypeName(new MockClassB()));
}
@Test
public void testDatatypeMutabilityPrimitive() throws Exception {
assertTrue(EvalUtils.isImmutable("foo"));
assertTrue(EvalUtils.isImmutable(3));
}
@Test
public void testDatatypeMutabilityShallow() throws Exception {
assertTrue(EvalUtils.isImmutable(Tuple.of(1, 2, 3)));
// Mutability depends on the environment.
assertTrue(EvalUtils.isImmutable(makeList(null)));
assertTrue(EvalUtils.isImmutable(makeDict(null)));
assertFalse(EvalUtils.isImmutable(makeList(env)));
assertFalse(EvalUtils.isImmutable(makeDict(env)));
}
@Test
public void testDatatypeMutabilityDeep() throws Exception {
assertTrue(EvalUtils.isImmutable(Tuple.<Object>of(makeList(null))));
assertFalse(EvalUtils.isImmutable(Tuple.<Object>of(makeList(env))));
}
@Test
public void testComparatorWithDifferentTypes() throws Exception {
Object[] objects = {
"1",
2,
true,
Runtime.NONE,
SkylarkList.Tuple.of(1, 2, 3),
SkylarkList.Tuple.of("1", "2", "3"),
SkylarkList.MutableList.of(env, 1, 2, 3),
SkylarkList.MutableList.of(env, "1", "2", "3"),
SkylarkDict.of(env, "key", 123),
SkylarkDict.of(env, 123, "value"),
NestedSetBuilder.stableOrder().add(1).add(2).add(3).build(),
NativeClassObjectConstructor.STRUCT.create(
ImmutableMap.of("key", (Object) "value"), "no field %s"),
};
for (int i = 0; i < objects.length; ++i) {
for (int j = 0; j < objects.length; ++j) {
if (i != j) {
try {
EvalUtils.SKYLARK_COMPARATOR.compare(objects[i], objects[j]);
Assert.fail("Shouldn't have compared different types");
} catch (ComparisonException e) {
// expected
}
}
}
}
}
@Test
public void testComparatorWithNones() throws Exception {
try {
EvalUtils.SKYLARK_COMPARATOR.compare(Runtime.NONE, Runtime.NONE);
Assert.fail("Shouldn't have compared nones");
} catch (ComparisonException e) {
// expected
}
}
}