// 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.debug;

import com.android.tools.r8.debug.DebugTestBase.JUnit3Wrapper.Command;
import com.google.common.collect.ImmutableList;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
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 InterfaceMethodTest extends DebugTestBase {

  private static final Path JAR = DebugTestBase.DEBUGGEE_JAVA8_JAR;
  private static final String SOURCE_FILE = "DebugInterfaceMethod.java";

  @Parameters(name = "{0}")
  public static Collection configs() {
    ImmutableList.Builder<Object[]> builder = ImmutableList.builder();
    DelayedDebugTestConfig cfConfig = temp -> new CfDebugTestConfig(JAR);
    DelayedDebugTestConfig d8Config = temp -> new D8DebugTestConfig().compileAndAdd(temp, JAR);
    builder.add(new Object[]{"CF", cfConfig});
    builder.add(new Object[]{"D8", d8Config});
    return builder.build();
  }

  private final DebugTestConfig config;

  public InterfaceMethodTest(String name, DelayedDebugTestConfig delayedConfig) {
    this.config = delayedConfig.getConfig(temp);
  }

  @Test
  public void testDefaultMethod() throws Throwable {
    String debuggeeClass = "DebugInterfaceMethod";
    String parameterName = "msg";
    String localVariableName = "name";

    List<Command> commands = new ArrayList<>();
    commands.add(breakpoint(debuggeeClass, "testDefaultMethod"));
    commands.add(run());
    commands.add(checkMethod(debuggeeClass, "testDefaultMethod"));
    commands.add(checkLine(SOURCE_FILE, 31));
    if (!supportsDefaultMethod(config)) {
      // We desugared default method. This means we're going to step through an extra (forward)
      // method first.
      commands.add(stepInto(INTELLIJ_FILTER));
    }
    commands.add(stepInto(INTELLIJ_FILTER));
    commands.add(checkLine(SOURCE_FILE, 9));
    // TODO(shertz) we should see the local variable this even when desugaring.
    if (supportsDefaultMethod(config)) {
      commands.add(checkLocal("this"));
    }
    commands.add(checkLocal(parameterName));
    commands.add(stepOver(INTELLIJ_FILTER));
    commands.add(checkLocal(parameterName));
    commands.add(checkLocal(localVariableName));
    // TODO(shertz) check current method name ?
    commands.add(run());
    commands.add(run()  /* resume after 2nd breakpoint */);

    runDebugTest(config, debuggeeClass, commands);
  }

  @Test
  public void testOverrideDefaultMethod() throws Throwable {
    String debuggeeClass = "DebugInterfaceMethod";
    String parameterName = "msg";
    String localVariableName = "newMsg";

    List<Command> commands = new ArrayList<>();
    commands.add(breakpoint(debuggeeClass, "testDefaultMethod"));
    commands.add(run());
    commands.add(run() /* resume after 1st breakpoint */);
    commands.add(checkMethod(debuggeeClass, "testDefaultMethod"));
    commands.add(checkLine(SOURCE_FILE, 31));
    commands.add(stepInto());
    commands.add(checkMethod("DebugInterfaceMethod$OverrideImpl", "doSomething"));
    commands.add(checkLocal("this"));
    commands.add(checkLocal(parameterName));
    commands.add(stepOver());
    commands.add(checkLocal("this"));
    commands.add(checkLocal(parameterName));
    commands.add(checkLocal(localVariableName));
    commands.add(run());

    runDebugTest(config, debuggeeClass, commands);
  }

  @Test
  public void testStaticMethod() throws Throwable {
    String debuggeeClass = "DebugInterfaceMethod";
    String parameterName = "msg";

    List<Command> commands = new ArrayList<>();
    commands.add(breakpoint(debuggeeClass, "testStaticMethod"));
    commands.add(run());
    commands.add(checkMethod(debuggeeClass, "testStaticMethod"));
    commands.add(checkLine(SOURCE_FILE, 35));
    commands.add(stepInto());
    commands.add(checkLocal(parameterName));
    commands.add(stepOver());
    commands.add(checkLocal(parameterName));
    commands.add(run());

    runDebugTest(config, debuggeeClass, commands);
  }
}