Add test for merging classes with allow shrinking
Bug: 189443104
Change-Id: I7c4bc59c50dbdd37deec1b14b163383359dd32f3
diff --git a/src/test/java/com/android/tools/r8/shaking/allowshrinking/KeepClassAllowShrinkingCompatibilityTest.java b/src/test/java/com/android/tools/r8/shaking/allowshrinking/KeepClassAllowShrinkingCompatibilityTest.java
new file mode 100644
index 0000000..7dc40c3
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/allowshrinking/KeepClassAllowShrinkingCompatibilityTest.java
@@ -0,0 +1,92 @@
+// 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.shaking.allowshrinking;
+
+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.TestShrinkerBuilder;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.google.common.collect.ImmutableList;
+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 KeepClassAllowShrinkingCompatibilityTest extends TestBase {
+
+ private final TestParameters parameters;
+ private final Shrinker shrinker;
+
+ @Parameters(name = "{0}, {1}")
+ public static List<Object[]> data() {
+ return buildParameters(
+ getTestParameters().withCfRuntimes().build(), ImmutableList.of(Shrinker.R8, Shrinker.PG));
+ }
+
+ public KeepClassAllowShrinkingCompatibilityTest(TestParameters parameters, Shrinker shrinker) {
+ this.parameters = parameters;
+ this.shrinker = shrinker;
+ }
+
+ @Test
+ public void test() throws Exception {
+ if (shrinker.isPG()) {
+ run(testForProguard(shrinker.getProguardVersion()).addDontWarn(getClass()));
+ } else {
+ run(testForR8(parameters.getBackend()));
+ }
+ }
+
+ private <T extends TestShrinkerBuilder<?, ?, ?, ?, T>> void run(T builder) throws Exception {
+ builder
+ .addProgramClasses(A.class, B.class, Main.class)
+ .addKeepMainRule(Main.class)
+ .addKeepRules("-keep,allowshrinking" + " class " + A.class.getTypeName())
+ .addKeepRules("-keep,allowshrinking" + " class " + B.class.getTypeName())
+ .compile()
+ .inspect(
+ inspector -> {
+ // TODO(b/189443104): Should keep A and B.
+ ClassSubject aSubject = inspector.clazz(A.class);
+ assertThat(aSubject, shrinker.isR8() ? not(isPresent()) : isPresent());
+ ClassSubject bSubject = inspector.clazz(B.class);
+ assertThat(bSubject, shrinker.isR8() ? not(isPresent()) : isPresent());
+ })
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithEmptyOutput();
+ }
+
+ static class A {
+ public A(int i) {
+ // Non-default constructor to ensure no soft pinning of a members.
+ if (i == 42) {
+ throw new RuntimeException("Foo");
+ }
+ }
+ }
+
+ static class B {
+ public B(int i) {
+ // Non-default constructor to ensure no soft pinning of a members.
+ if (i == 42) {
+ throw new RuntimeException("Foo");
+ }
+ }
+ }
+
+ static class Main {
+
+ public static void main(String[] args) {
+ new A(args.length);
+ new B(args.length);
+ }
+ }
+}
