| // Copyright 2018 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.skyframe.serialization; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.devtools.build.lib.testutil.MoreAsserts.assertThrows; |
| |
| import com.google.devtools.build.lib.skyframe.serialization.testutils.SerializationTester; |
| import com.google.devtools.build.lib.skyframe.serialization.testutils.TestUtils; |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.function.Function; |
| import java.util.function.Supplier; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link LambdaCodec}. */ |
| @RunWith(JUnit4.class) |
| public class LambdaCodecTest { |
| private interface MyInterface { |
| boolean func(String arg); |
| } |
| |
| @Test |
| public void smoke() throws Exception { |
| List<Boolean> returnValue = new ArrayList<>(); |
| new SerializationTester( |
| (Supplier<Void> & Serializable) () -> null, |
| (Function<Object, String> & Serializable) Object::toString, |
| (MyInterface & Serializable) arg -> "hello".equals(arg), |
| (MyInterface & Serializable) "hello"::equals, |
| (MyInterface & Serializable) (arg) -> !returnValue.isEmpty()) |
| // We can't compare lambdas for equality, just make sure they get deserialized. |
| .setVerificationFunction((original, deserialized) -> assertThat(deserialized).isNotNull()) |
| .runTests(); |
| } |
| |
| @Test |
| public void lambdaBehaviorPreserved() throws Exception { |
| List<Boolean> returnValue = new ArrayList<>(); |
| MyInterface lambda = (MyInterface & Serializable) (arg) -> returnValue.isEmpty(); |
| MyInterface deserializedLambda = TestUtils.roundTrip(lambda); |
| assertThat(lambda.func("any")).isTrue(); |
| assertThat(deserializedLambda.func("any")).isTrue(); |
| returnValue.add(true); |
| assertThat(lambda.func("any")).isFalse(); |
| // Deserialized object's list is not the same as original's. Changes to original aren't seen. |
| assertThat(deserializedLambda.func("any")).isTrue(); |
| } |
| |
| @Test |
| public void onlySerializableWorks() { |
| MyInterface unserializableLambda = (arg) -> true; |
| assertThrows( |
| SerializationException.class, |
| () -> TestUtils.toBytesMemoized(unserializableLambda, AutoRegistry.get())); |
| } |
| } |