Java.Util.Function is broken on API 26+
Bug: 139398549
Change-Id: I9ef2d4a1276e409c8f9f134c506a0117b18ddfeb
diff --git a/src/test/java/com/android/tools/r8/shaking/FunctionTest.java b/src/test/java/com/android/tools/r8/shaking/FunctionTest.java
new file mode 100644
index 0000000..0e87547
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/FunctionTest.java
@@ -0,0 +1,82 @@
+// Copyright (c) 2019, 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 org.hamcrest.core.StringContains.containsString;
+
+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 com.android.tools.r8.ToolHelper.DexVm.Version;
+import com.android.tools.r8.utils.StringUtils;
+import java.util.function.Function;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class FunctionTest extends TestBase {
+
+ private static final String expectedOutput = StringUtils.lines("Hello, world", "Hello, world");
+ private final TestParameters parameters;
+
+ @Parameterized.Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withDexRuntimesStartingFromIncluding(Version.V8_1_0).build();
+ }
+
+ public FunctionTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void testD8() throws Exception {
+ testForD8()
+ .addInnerClasses(FunctionTest.class)
+ .run(parameters.getRuntime(), FunctionTest.TestClass.class)
+ .assertSuccessWithOutput(expectedOutput);
+ }
+
+ @Test
+ public void testR8Working() throws Exception {
+ testForR8(parameters.getBackend())
+ .addKeepMainRule(TestClass.class)
+ .noTreeShaking()
+ .noMinification()
+ .enableInliningAnnotations()
+ .addInnerClasses(FunctionTest.class)
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutput(expectedOutput);
+ }
+
+ @Test
+ public void testR8Broken() throws Exception {
+ testForR8(parameters.getBackend())
+ .addKeepMainRule(TestClass.class)
+ .enableInliningAnnotations()
+ .addInnerClasses(FunctionTest.class)
+ .run(parameters.getRuntime(), TestClass.class)
+ // TODO(b/139398549): Change this to assertSuccessWithOutput(expectedOutput).
+ .assertFailure()
+ .assertStderrMatches(
+ containsString(
+ "Exception in thread \"main\" java.lang.AbstractMethodError: abstract method"
+ + " \"java.lang.Object"
+ + " java.util.function.Function.apply(java.lang.Object)\""));
+ }
+
+ static class TestClass {
+
+ @NeverInline
+ private static String applyFunction(Function<String, String> f) {
+ return f.apply("Hello, world");
+ }
+
+ public static void main(String[] args) {
+ System.out.println(applyFunction(s -> s + System.lineSeparator() + s));
+ }
+ }
+}
