Reproduce inadequate tracing of lambda captures
Bug: 210597220
Change-Id: Iea78e0965a08000c4bfcbff8b1099fc2aef100a1
diff --git a/src/test/java/com/android/tools/r8/shaking/LambdaCaptureShrinkingTest.java b/src/test/java/com/android/tools/r8/shaking/LambdaCaptureShrinkingTest.java
new file mode 100644
index 0000000..8806890
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/LambdaCaptureShrinkingTest.java
@@ -0,0 +1,89 @@
+// 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;
+
+import static junit.framework.TestCase.assertTrue;
+
+import com.android.tools.r8.NoVerticalClassMerging;
+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.codeinspector.AssertUtils;
+import com.android.tools.r8.utils.codeinspector.InstructionSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import java.util.Arrays;
+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;
+
+@RunWith(Parameterized.class)
+public class LambdaCaptureShrinkingTest extends TestBase {
+
+ @Parameter(0)
+ public TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters()
+ .withCfRuntimes()
+ .withDexRuntimes()
+ .withApiLevelsStartingAtIncluding(AndroidApiLevel.N)
+ .build();
+ }
+
+ @Test
+ public void test() throws Exception {
+ AssertUtils.assertFailsCompilationIf(
+ parameters.isCfRuntime(),
+ () ->
+ testForR8(parameters.getBackend())
+ .addInnerClasses(getClass())
+ .addKeepMainRule(Main.class)
+ .enableNoVerticalClassMergingAnnotations()
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .applyIf(
+ parameters.isCfRuntime(),
+ compileResult ->
+ compileResult.inspect(
+ inspector -> {
+ MethodSubject mainMethodSubject =
+ inspector.clazz(Main.class).mainMethod();
+ assertTrue(
+ mainMethodSubject
+ .streamInstructions()
+ .anyMatch(InstructionSubject::isInvokeDynamic));
+ }))
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithOutputLines("true"));
+ }
+
+ static class Main {
+
+ public static void main(String[] args) {
+ PredicateInterface f = new Predicate();
+ System.out.println(Arrays.asList(args).stream().noneMatch(f::m));
+ }
+ }
+
+ @NoVerticalClassMerging
+ interface PredicateInterfaceBase {
+ boolean m(String item);
+ }
+
+ @NoVerticalClassMerging
+ interface PredicateInterface extends PredicateInterfaceBase {}
+
+ static class Predicate implements PredicateInterface {
+
+ @Override
+ public boolean m(String item) {
+ return System.currentTimeMillis() > 0;
+ }
+ }
+}
