// 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.rewrite.switchmaps;

import com.android.tools.r8.CompilationMode;
import com.android.tools.r8.R8Command;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.ToolHelper;
import com.android.tools.r8.origin.Origin;
import com.android.tools.r8.utils.AndroidApp;
import com.android.tools.r8.utils.codeinspector.CodeInspector;
import com.google.common.collect.ImmutableList;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

@RunWith(Parameterized.class)
public class RewriteSwitchMapsTest extends TestBase {

  private Backend backend;

  @Parameterized.Parameters(name = "Backend: {0}")
  public static Collection<Backend> data() {
    return Arrays.asList(Backend.values());
  }

  public RewriteSwitchMapsTest(Backend backend) {
    this.backend = backend;
  }

  private static final String JAR_FILE = "switchmaps.jar";
  private static final String SWITCHMAP_CLASS_NAME = "switchmaps.Switches$1";
  private static final List<String> PG_CONFIG = ImmutableList.of(
      "-keep class switchmaps.Switches { public static void main(...); }",
      "-dontobfuscate",
      "-keepattributes *");

  @Test
  public void checkSwitchMapsRemoved() throws Exception {
    run(CompilationMode.RELEASE);
  }

  @Test
  public void checkSwitchMapsRemovedDebug() throws Exception {
    run(CompilationMode.DEBUG);
  }

  private void run(CompilationMode compilationMode) throws Exception {
    R8Command command =
        R8Command.builder()
            .addProgramFiles(Paths.get(ToolHelper.EXAMPLES_BUILD_DIR).resolve(JAR_FILE))
            .addLibraryFiles(runtimeJar(backend))
            .addProguardConfiguration(PG_CONFIG, Origin.unknown())
            .setMode(compilationMode)
            .setProgramConsumer(emptyConsumer(backend))
            .build();
    AndroidApp result = ToolHelper.runR8(command);
    CodeInspector inspector = new CodeInspector(result, o -> o.enableCfFrontend = true);
    Assert.assertFalse(inspector.clazz(SWITCHMAP_CLASS_NAME).isPresent());
  }
}