Reproduction of AbstractMethodRemover removing method that should stay
Bug: 198542172
Change-Id: I0fe0a1b5495ad14c72d923f74819333819892a97
diff --git a/src/test/java/com/android/tools/r8/bridgeremoval/KeepAbstractMethodShadowingTest.java b/src/test/java/com/android/tools/r8/bridgeremoval/KeepAbstractMethodShadowingTest.java
new file mode 100644
index 0000000..1836e19
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/bridgeremoval/KeepAbstractMethodShadowingTest.java
@@ -0,0 +1,101 @@
+// Copyright (c) 2021, 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.bridgeremoval;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.transformers.ClassFileTransformer.MethodPredicate;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import org.junit.Assume;
+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 KeepAbstractMethodShadowingTest extends TestBase {
+
+ private final TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ public KeepAbstractMethodShadowingTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void testJvm() throws Exception {
+ Assume.assumeTrue(parameters.isCfRuntime());
+ testForJvm()
+ .addProgramClasses(A.class, C.class, Main.class)
+ .addProgramClassFileData(getBWithAbstractFoo())
+ .run(parameters.getRuntime(), Main.class)
+ .assertFailureWithErrorThatThrows(AbstractMethodError.class);
+ }
+
+ @Test
+ public void testR8() throws Exception {
+ testForR8(parameters.getBackend())
+ .addProgramClasses(A.class, C.class, Main.class)
+ .addProgramClassFileData(getBWithAbstractFoo())
+ .setMinApi(parameters.getApiLevel())
+ .addKeepMainRule(Main.class)
+ .addKeepClassAndMembersRules(A.class)
+ .run(parameters.getRuntime(), Main.class)
+ // TODO(b/198542172): Should be AbstractMethodError.
+ .assertSuccessWithOutputLines("Hello World")
+ .inspect(
+ inspector -> {
+ ClassSubject clazz = inspector.clazz(B.class);
+ assertThat(clazz, isPresent());
+ MethodSubject foo = clazz.uniqueMethodWithName("foo");
+ // TODO(b/198542172): Should be present.
+ assertThat(foo, not(isPresent()));
+ });
+ }
+
+ private byte[] getBWithAbstractFoo() throws Exception {
+ return transformer(B.class)
+ .renameMethod(MethodPredicate.onName("will_be_foo"), "foo")
+ .transform();
+ }
+
+ public static class A {
+ public void foo() {
+ System.out.println("Hello World");
+ }
+ }
+
+ public abstract static class B extends A {
+ public abstract void /* foo */ will_be_foo();
+ }
+
+ public static class C extends B {
+
+ @Override
+ public void foo() {
+ super.foo();
+ }
+
+ @Override
+ public void will_be_foo() {}
+ }
+
+ public static class Main {
+
+ public static void main(String[] args) {
+ new C().foo();
+ }
+ }
+}
