src/test/java/com/android/tools/r8/internal/R8GMSCoreV10TreeShakeJarVerificationTest.java

// Copyright (c) 2017, 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;

import static org.junit.Assert.assertEquals;

import com.android.tools.r8.CompilationMode;
import com.android.tools.r8.utils.AndroidApp;
import com.android.tools.r8.utils.codeinspector.ClassHierarchyVerifier;
import com.android.tools.r8.utils.codeinspector.CodeInspector;
import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

public class R8GMSCoreV10TreeShakeJarVerificationTest
    extends R8GMSCoreTreeShakeJarVerificationTest {

  private String proguardMap1 = null;
  private String proguardMap2 = null;

  @Rule public final ExpectedException exception = ExpectedException.none();

  @Test
  public void buildAndTreeShakeFromDeployJar() throws Exception {
    // TODO(tamaskenez): set hasReference = true when we have the noshrink file for V10
    AndroidApp app1 =
        buildAndTreeShakeFromDeployJar(
            CompilationMode.RELEASE,
            GMSCORE_V10_DIR,
            false,
            GMSCORE_V10_MAX_SIZE,
            options ->
                options.proguardMapConsumer =
                    (proguardMap, handler) -> this.proguardMap1 = proguardMap);
    AndroidApp app2 =
        buildAndTreeShakeFromDeployJar(
            CompilationMode.RELEASE,
            GMSCORE_V10_DIR,
            false,
            GMSCORE_V10_MAX_SIZE,
            options ->
                options.proguardMapConsumer =
                    (proguardMap, handler) -> this.proguardMap2 = proguardMap);

    // Verify that the result of the two compilations was the same.
    assertIdenticalApplications(app1, app2);
    assertEquals(proguardMap1, proguardMap2);

    // TODO(b/115705526): Remove expected exception when bug is fixed.
    exception.expect(AssertionError.class);
    exception.expectMessage("Non-abstract class");
    exception.expectMessage("must implement method");

    // Check that all non-abstract classes implement the abstract methods from their super types.
    // This is a sanity check for the tree shaking and minification.
    Path proguardMap1Path = File.createTempFile("mapping", ".txt", temp.getRoot()).toPath();
    Files.write(proguardMap1Path, proguardMap1.getBytes(StandardCharsets.UTF_8));

    CodeInspector inspector = new CodeInspector(app1, proguardMap1Path);
    new ClassHierarchyVerifier(inspector, false).run();
  }
}