src/test/java/com/android/tools/r8/cf/stackmap/UndefinedTypesAssignmentTest.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.cf.stackmap;

import static com.android.tools.r8.DiagnosticsMatcher.diagnosticType;

import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import com.android.tools.r8.utils.AndroidApiLevel;
import com.android.tools.r8.utils.StringUtils;
import com.android.tools.r8.utils.UnverifiableCfCodeDiagnostic;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

/** Regression test for b/b/261967650 */
@RunWith(Parameterized.class)
public class UndefinedTypesAssignmentTest extends TestBase {

  static final String EXPECTED = StringUtils.lines("Hello, world");

  private final TestParameters parameters;

  @Parameterized.Parameters(name = "{0}")
  public static TestParametersCollection data() {
    return getTestParameters()
        .withDefaultRuntimes()
        .withApiLevel(AndroidApiLevel.B)
        .enableApiLevelsForCf()
        .build();
  }

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

  @Test
  public void testReference() throws Exception {
    testForD8(parameters.getBackend())
        .addProgramClasses(TestClass.class)
        .setMinApi(parameters.getApiLevel())
        .compile()
        .addRunClasspathClasses(I.class, A.class)
        .run(parameters.getRuntime(), TestClass.class)
        .assertSuccessWithOutput(EXPECTED);
  }

  @Test
  public void testR8() throws Exception {
    testForR8(parameters.getBackend())
        .addProgramClasses(TestClass.class)
        .addDontWarn(I.class, A.class)
        .addKeepMainRule(TestClass.class)
        .setMinApi(parameters.getApiLevel())
        .allowDiagnosticWarningMessages()
        .compileWithExpectedDiagnostics(
            diagnostics ->
                diagnostics
                    .assertOnlyWarnings()
                    .assertWarningsMatch(diagnosticType(UnverifiableCfCodeDiagnostic.class)))
        .addRunClasspathClasses(I.class, A.class)
        .run(parameters.getRuntime(), TestClass.class)
        .assertSuccessWithOutput(EXPECTED);
  }

  interface I {}

  static class A implements I {}

  static class TestClass {

    public static void main(String[] args) {
      I i = null;
      try {
        i = new A();
        System.out.println("Hello, world");
      } catch (Exception e) {
        System.out.println(i);
      }
    }
  }
}