| // Copyright (c) 2021, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.optimize.library; |
| |
| import static com.android.tools.r8.utils.codeinspector.CodeMatchers.invokesMethodWithName; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import java.io.IOException; |
| import java.util.Objects; |
| import java.util.function.Supplier; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class ObjectsRequireNonNullElseGetTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters() |
| .withDexRuntimes() |
| .withApiLevelsStartingAtIncluding(AndroidApiLevel.N) |
| .build(); |
| } |
| |
| public ObjectsRequireNonNullElseGetTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testD8() throws Exception { |
| testForD8(parameters.getBackend()) |
| .addProgramClassFileData(getProgramClassFileData()) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("Foo", "Bar", "Expected NPE"); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClassFileData(getProgramClassFileData()) |
| .addKeepMainRule(Main.class) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| |
| MethodSubject testNonNullArgumentMethodSubject = |
| mainClassSubject.uniqueMethodWithName("testNonNullArgument"); |
| assertThat(testNonNullArgumentMethodSubject, isPresent()); |
| assertThat( |
| testNonNullArgumentMethodSubject, |
| not(invokesMethodWithName("requireNonNullElseGet"))); |
| |
| MethodSubject testNullArgumentMethodSubject = |
| mainClassSubject.uniqueMethodWithName("testNullArgument"); |
| assertThat(testNullArgumentMethodSubject, isPresent()); |
| assertThat( |
| testNullArgumentMethodSubject, |
| parameters.getApiLevel().isGreaterThan(AndroidApiLevel.Q) |
| ? invokesMethodWithName("requireNonNullElseGet") |
| : not(invokesMethodWithName("requireNonNullElseGet"))); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("Foo", "Bar", "Expected NPE"); |
| } |
| |
| private byte[] getProgramClassFileData() throws IOException { |
| return transformer(Main.class) |
| .replaceClassDescriptorInMethodInstructions( |
| descriptor(Mock.class), descriptor(Objects.class)) |
| .transform(); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| testNonNullArgument(); |
| testNullArgument(); |
| try { |
| testNullArgumentAndNullSupplier(); |
| System.out.println("Unexpected"); |
| } catch (NullPointerException e) { |
| System.out.println("Expected NPE"); |
| } |
| } |
| |
| @NeverInline |
| static void testNonNullArgument() { |
| System.out.println(Mock.requireNonNullElseGet("Foo", null)); |
| } |
| |
| @NeverInline |
| static void testNullArgument() { |
| System.out.println(Mock.requireNonNullElseGet(null, () -> "Bar")); |
| } |
| |
| @NeverInline |
| static void testNullArgumentAndNullSupplier() { |
| System.out.println(Mock.requireNonNullElseGet(null, () -> null)); |
| } |
| } |
| |
| // References to this class are rewritten to java.util.Objects by transformation. |
| static class Mock { |
| |
| public static Object requireNonNullElseGet(Object obj, Supplier<?> supplier) { |
| throw new RuntimeException(); |
| } |
| } |
| } |