src/test/java/com/android/tools/r8/repackage/RepackageObjectOnProgramPathTest.java

// Copyright (c) 2022, 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.repackage;

import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static org.objectweb.asm.Opcodes.ACC_SUPER;
import static org.objectweb.asm.Opcodes.V1_8;

import com.android.tools.r8.NeverInline;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;
import org.objectweb.asm.ClassWriter;

/** This is a regression test for b/237124748 */
@RunWith(Parameterized.class)
public class RepackageObjectOnProgramPathTest extends TestBase {

  @Parameter() public TestParameters parameters;

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

  @Test
  public void testR8() throws Exception {
    testForR8(parameters.getBackend())
        .addProgramClassFileData(dumpObject())
        .addProgramClasses(A.class, Main.class)
        .setMinApi(parameters.getApiLevel())
        .enableInliningAnnotations()
        .addKeepMainRule(Main.class)
        .addDontWarn("*")
        .addKeepClassRules(Object.class)
        .allowDiagnosticWarningMessages()
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("A::foo");
  }

  public static byte[] dumpObject() {
    ClassWriter classWriter = new ClassWriter(0);
    classWriter.visit(V1_8, ACC_PUBLIC | ACC_SUPER, "java/lang/Object", null, null, null);
    classWriter.visitEnd();
    return classWriter.toByteArray();
  }

  public static class A {

    @NeverInline
    public static void foo() {
      System.out.println("A::foo");
    }
  }

  public static class Main {

    public static void main(String[] args) {
      A.foo();
    }
  }
}