| /* |
| * Copyright 2019 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.android.desugar.nest; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.android.desugar.testing.junit.AsmNode; |
| import com.google.devtools.build.android.desugar.testing.junit.DesugarRule; |
| import com.google.devtools.build.android.desugar.testing.junit.DesugarRunner; |
| import com.google.devtools.build.android.desugar.testing.junit.DynamicClassLiteral; |
| import com.google.devtools.build.android.desugar.testing.junit.JdkSuppress; |
| import com.google.devtools.build.android.desugar.testing.junit.JdkVersion; |
| import com.google.devtools.build.android.desugar.testing.junit.RuntimeMethodHandle; |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.reflect.Method; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import javax.inject.Inject; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.objectweb.asm.tree.ClassNode; |
| |
| /** Tests for accessing private interface methods from another class within a nest. */ |
| @RunWith(DesugarRunner.class) |
| @JdkSuppress(minJdkVersion = JdkVersion.V11) |
| public final class NestDesugaringInterfaceMethodAccessTest { |
| |
| @Rule |
| public final DesugarRule desugarRule = |
| DesugarRule.builder(this, MethodHandles.lookup()) |
| .addSourceInputsFromJvmFlag("input_srcs") |
| .addJavacOptions("-source 11", "-target 11") |
| .setWorkingJavaPackage( |
| "com.google.devtools.build.android.desugar.nest.testsrc.simpleunit.interfacemethod") |
| .addCommandOptions("desugar_nest_based_private_access", "true") |
| .build(); |
| |
| @Inject |
| @DynamicClassLiteral(value = "InterfaceNest$InterfaceMate") |
| private Class<?> mate; |
| |
| private Object mateInstance; |
| |
| @Inject |
| @DynamicClassLiteral(value = "InterfaceNest$ConcreteMate") |
| private Class<?> concreteMate; |
| |
| @Before |
| public void loadClassesInNest() throws Exception { |
| mateInstance = concreteMate.getDeclaredConstructor().newInstance(); |
| } |
| |
| @Test |
| public void inputClassFileMajorVersions( |
| @AsmNode(className = "InterfaceNest", round = 0) ClassNode beforeDesugarClassNode, |
| @AsmNode(className = "InterfaceNest", round = 1) ClassNode afterDesugarClassNode) { |
| assertThat(beforeDesugarClassNode.version).isEqualTo(JdkVersion.V11); |
| assertThat(afterDesugarClassNode.version).isEqualTo(JdkVersion.V1_7); |
| } |
| |
| @Test |
| public void interfaceDeclaredMethods() { |
| List<String> interfaceMethodNames = |
| Arrays.stream(mate.getDeclaredMethods()).map(Method::getName).collect(Collectors.toList()); |
| assertThat(interfaceMethodNames) |
| .containsExactly("invokeInstanceMethodInClassBoundary", "mateValues"); |
| } |
| |
| @Test |
| public void invokePrivateStaticMethod( |
| @RuntimeMethodHandle(className = "InterfaceNest", memberName = "invokePrivateStaticMethod") |
| MethodHandle invokePrivateStaticMethod) |
| throws Throwable { |
| long result = (long) invokePrivateStaticMethod.invoke(10L, 20); |
| assertThat(result).isEqualTo(30L); |
| } |
| |
| @Test |
| public void invokePrivateInstanceMethod( |
| @RuntimeMethodHandle(className = "InterfaceNest", memberName = "invokePrivateInstanceMethod") |
| MethodHandle invokePrivateInstanceMethod) |
| throws Throwable { |
| long result = (long) invokePrivateInstanceMethod.invoke(mateInstance, 20L, 30); |
| assertThat(result).isEqualTo(50L); |
| } |
| |
| @Test |
| public void invokeInClassBoundaryStaticMethod( |
| @RuntimeMethodHandle( |
| className = "InterfaceNest", |
| memberName = "invokeInClassBoundaryStaticMethod") |
| MethodHandle invokeInClassBoundaryStaticMethod) |
| throws Throwable { |
| long result = (long) invokeInClassBoundaryStaticMethod.invoke(2L); |
| assertThat(result).isEqualTo(3L); // 0 + 1 + 2 |
| } |
| |
| @Test |
| public void invokeInClassBoundaryInstanceMethod( |
| @RuntimeMethodHandle( |
| className = "InterfaceNest", |
| memberName = "invokeInClassBoundaryInstanceMethod") |
| MethodHandle invokeInClassBoundaryInstanceMethod) |
| throws Throwable { |
| long result = (long) invokeInClassBoundaryInstanceMethod.invoke(mateInstance, 3L); |
| assertThat(result).isEqualTo(6L); // 0 + 1 + 2 + 3 |
| } |
| |
| @Test |
| public void invokePrivateStaticMethodWithLambda( |
| @RuntimeMethodHandle( |
| className = "InterfaceNest", |
| memberName = "invokePrivateStaticMethodWithLambda") |
| MethodHandle invokePrivateStaticMethodWithLambda) |
| throws Throwable { |
| long result = (long) invokePrivateStaticMethodWithLambda.invoke(2L, 3L, 4L, 5L); |
| assertThat(result).isEqualTo(17L); |
| } |
| |
| @Test |
| public void invokePrivateInstanceMethodWithLambda( |
| @RuntimeMethodHandle( |
| className = "InterfaceNest", |
| memberName = "invokePrivateInstanceMethodWithLambda") |
| MethodHandle invokePrivateInstanceMethodWithLambda) |
| throws Throwable { |
| long result = |
| (long) |
| invokePrivateInstanceMethodWithLambda.invoke( |
| mateInstance, ImmutableList.of(2L, 3L), 4L, 5L); |
| assertThat(result).isEqualTo(64850L); |
| } |
| } |