| // Copyright (c) 2022, 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.keepanno; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.containsString; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.keepanno.annotations.KeepTarget; |
| import com.android.tools.r8.keepanno.annotations.UsesReflection; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.google.common.collect.ImmutableList; |
| import java.lang.reflect.Field; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class KeepUsesReflectionOnFieldTest extends TestBase { |
| |
| static final String EXPECTED = StringUtils.lines("Hello, world"); |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDefaultRuntimes().withApiLevel(AndroidApiLevel.B).build(); |
| } |
| |
| public KeepUsesReflectionOnFieldTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testReference() throws Exception { |
| testForRuntime(parameters) |
| .addProgramClasses(getInputClasses()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| @Test |
| public void testWithRuleExtraction() throws Exception { |
| List<String> rules = getExtractedKeepRules(); |
| assertEquals(1, rules.size()); |
| assertThat(rules.get(0), containsString("context: " + descriptor(A.class) + "foo()V")); |
| assertThat(rules.get(0), containsString("description: Keep the\\nstring-valued fields")); |
| testForR8(parameters.getBackend()) |
| .addProgramClassFileData(getInputClassesWithoutAnnotations()) |
| .addKeepRules(rules) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED) |
| .inspect(this::checkOutput); |
| } |
| |
| public List<Class<?>> getInputClasses() { |
| return ImmutableList.of(TestClass.class, A.class); |
| } |
| |
| public List<byte[]> getInputClassesWithoutAnnotations() throws Exception { |
| return KeepEdgeAnnotationsTest.getInputClassesWithoutKeepAnnotations(getInputClasses()); |
| } |
| |
| public List<String> getExtractedKeepRules() throws Exception { |
| List<Class<?>> classes = getInputClasses(); |
| List<String> rules = new ArrayList<>(); |
| for (Class<?> clazz : classes) { |
| rules.addAll(KeepEdgeAnnotationsTest.getKeepRulesForClass(clazz)); |
| } |
| return rules; |
| } |
| |
| private void checkOutput(CodeInspector inspector) { |
| assertThat(inspector.clazz(A.class), isPresent()); |
| assertThat(inspector.clazz(A.class).uniqueFieldWithOriginalName("fieldA"), isPresent()); |
| assertThat(inspector.clazz(A.class).uniqueFieldWithOriginalName("fieldB"), isAbsent()); |
| } |
| |
| static class A { |
| |
| public String fieldA = "Hello, world"; |
| public Integer fieldB = 42; |
| |
| @UsesReflection( |
| description = "Keep the\nstring-valued fields", |
| value = { |
| @KeepTarget( |
| className = "com.android.tools.r8.keepanno.KeepUsesReflectionOnFieldTest$A", |
| fieldType = "java.lang.String") |
| }) |
| public void foo() throws Exception { |
| for (Field field : getClass().getDeclaredFields()) { |
| if (field.getType().equals(String.class)) { |
| System.out.println(field.get(this)); |
| } |
| } |
| } |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) throws Exception { |
| new A().foo(); |
| } |
| } |
| } |