| // 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.compatproguard; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import java.util.Objects; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class ShrinkFieldsWhileKeepingFieldNameTest extends TestBase { |
| |
| private static final String KEEP_FIELD_NAMES_RULE = |
| "-keepclassmembernames,allowoptimization class" |
| + " com.android.tools.r8.compatproguard.ShrinkFieldsWhileKeepingFieldNameTest$Person {" |
| + " <fields>; }"; |
| private static final String EXPECTED_RESULT = |
| StringUtils.lines("Person[name=John; age=42]", "Person[name=Jane; age=42]"); |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public ShrinkFieldsWhileKeepingFieldNameTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testShrinkFieldWhileKeepingFieldNameR8() throws Throwable { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(Person.class, Main.class) |
| .enableNeverClassInliningAnnotations() |
| .addKeepMainRule(Main.class) |
| .addKeepRules(KEEP_FIELD_NAMES_RULE) |
| .setMinApi(parameters) |
| .compile() |
| .inspect(this::assertSingleFieldWithOriginalName) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutput(EXPECTED_RESULT); |
| } |
| |
| @Test |
| public void testShrinkFieldWhileKeepingFieldNameR8Compat() throws Throwable { |
| testForR8Compat(parameters.getBackend()) |
| .addProgramClasses(Person.class, Main.class) |
| .enableNeverClassInliningAnnotations() |
| .addKeepMainRule(Main.class) |
| .addKeepRules(KEEP_FIELD_NAMES_RULE) |
| .setMinApi(parameters) |
| .compile() |
| // TODO(b/200933020): this assert shall pass. |
| // .inspect(this::assertSingleFieldWithOriginalName) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutput(EXPECTED_RESULT); |
| } |
| |
| private void assertSingleFieldWithOriginalName(CodeInspector inspector) { |
| ClassSubject clazz = inspector.clazz(Person.class); |
| assertEquals(1, clazz.allInstanceFields().size()); |
| assertEquals("name", clazz.field("java.lang.String", "name").getFinalName()); |
| } |
| |
| @NeverClassInline |
| static class Person { |
| |
| private final String name; |
| private final int age; |
| |
| Person(String name, int age) { |
| this.name = name; |
| this.age = age; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof Person)) { |
| return false; |
| } |
| Person person = (Person) o; |
| return age == person.age && Objects.equals(name, person.name); |
| } |
| |
| @Override |
| public String toString() { |
| return "Person[name=" + name + "; age=" + age + "]"; |
| } |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| System.out.println(new Person("John", 42)); |
| System.out.println(new Person("Jane", 42)); |
| } |
| } |
| } |