Add a test that highlights limitations of lookupSingleInterfaceTarget()
Bug: 145271928, 142116551
Change-Id: I3b75943bc467f1ffc184061385f5ce1d3dfe93b4
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/inliner/InlineFunctionalInterfaceMethodImplementedByLambdasTest.java b/src/test/java/com/android/tools/r8/ir/optimize/inliner/InlineFunctionalInterfaceMethodImplementedByLambdasTest.java
new file mode 100644
index 0000000..ed54346
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/inliner/InlineFunctionalInterfaceMethodImplementedByLambdasTest.java
@@ -0,0 +1,77 @@
+// 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.ir.optimize.inliner;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.codeinspector.CodeInspector;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class InlineFunctionalInterfaceMethodImplementedByLambdasTest extends TestBase {
+
+ private final TestParameters parameters;
+
+ @Parameterized.Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ public InlineFunctionalInterfaceMethodImplementedByLambdasTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void test() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(InlineFunctionalInterfaceMethodImplementedByLambdasTest.class)
+ .addKeepMainRule(TestClass.class)
+ .enableClassInliningAnnotations()
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .inspect(this::inspect)
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutputLines("Hello world!");
+ }
+
+ private void inspect(CodeInspector inspector) {
+ if (parameters.isDexRuntime()) {
+ // TODO(b/145271928): Should be able to inline I.m().
+ assertThat(inspector.clazz(I.class), isPresent());
+ }
+
+ // TODO(b/145271928): Should be able to inline A.m().
+ assertThat(inspector.clazz(A.class), isPresent());
+ }
+
+ static class TestClass {
+
+ public static void main(String[] args) {
+ ((I) new A()).m();
+ ((I) () -> System.out.println(" world!")).m();
+ }
+ }
+
+ interface I {
+
+ void m();
+ }
+
+ @NeverClassInline
+ static class A implements I {
+
+ @Override
+ public void m() {
+ System.out.print("Hello");
+ }
+ }
+}
