// 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.ir.optimize.membervaluepropagation;

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 org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

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

  private final TestParameters parameters;

  @Parameterized.Parameters(name = "{0}")
  public static TestParametersCollection data() {
    return getTestParameters().withAllRuntimes().build();
  }

  public RedundantStaticPutWithClassInitializationTest(TestParameters parameters) {
    this.parameters = parameters;
  }

  @Test
  public void test() throws Exception {
    String expectedOutput = StringUtils.lines("Hello world!");
    testForR8(parameters.getBackend())
        .addInnerClasses(RedundantStaticPutWithClassInitializationTest.class)
        .addKeepMainRule(TestClass.class)
        .setMinApi(parameters.getRuntime())
        .run(parameters.getRuntime(), TestClass.class)
        .assertSuccessWithOutput(expectedOutput);
  }

  static class TestClass {

    public static void main(String[] args) {
      // Cannot be removed by member value propagation, although the field is never read, because
      // it may trigger A's class initializer.
      A.field = "Hello world!";
    }
  }

  static class A {

    static String field;

    static {
      System.out.println("Hello world!");
    }
  }
}