src/test/java/com/android/tools/r8/internal/proto/Proto3ShrinkingTest.java

// Copyright (c) 2019, 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.internal.proto;

import com.android.tools.r8.TestParameters;
import com.android.tools.r8.utils.BooleanUtils;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

@RunWith(Parameterized.class)
public class Proto3ShrinkingTest extends ProtoShrinkingTestBase {

  private final boolean allowAccessModification;
  private final boolean enableMinification;
  private final TestParameters parameters;

  @Parameterized.Parameters(name = "{2}, allow access modification: {0}, enable minification: {1}")
  public static List<Object[]> data() {
    return buildParameters(
        BooleanUtils.values(),
        BooleanUtils.values(),
        getTestParameters().withAllRuntimes().build());
  }

  public Proto3ShrinkingTest(
      boolean allowAccessModification, boolean enableMinification, TestParameters parameters) {
    this.allowAccessModification = allowAccessModification;
    this.enableMinification = enableMinification;
    this.parameters = parameters;
  }

  @Test
  public void test() throws Exception {
    testForR8(parameters.getBackend())
        .addProgramFiles(PROTO3_EXAMPLES_JAR, PROTO3_PROTO_JAR, PROTOBUF_LITE_JAR)
        .addKeepMainRule("proto3.TestClass")
        .addKeepRules(
            allowAccessModification ? "-allowaccessmodification" : "")
        .addKeepRuleFiles(PROTOBUF_LITE_PROGUARD_RULES)
        .addOptionsModification(
            options -> {
              options.enableGeneratedMessageLiteShrinking = true;
              options.enableGeneratedExtensionRegistryShrinking = true;
              options.enableStringSwitchConversion = true;

              // Because there are unused rules in lite_proguard.pgcfg.
              options.testing.allowUnusedProguardConfigurationRules = true;
            })
        .minification(enableMinification)
        .setMinApi(parameters.getRuntime())
        .compile()
        .run(parameters.getRuntime(), "proto3.TestClass")
        .assertSuccessWithOutputLines("--- partiallyUsed_proto3 ---", "42");
  }
}