Reproduce NoClassDefFound due to singleton canonicalization
Bug: 171136616
Change-Id: I8622d854a70e7c71940eef065dc14ba089c46dc7
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/SingletonCanonicalizationWithApiLevelCheckTest.java b/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/SingletonCanonicalizationWithApiLevelCheckTest.java
new file mode 100644
index 0000000..7f5b905
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/SingletonCanonicalizationWithApiLevelCheckTest.java
@@ -0,0 +1,120 @@
+// Copyright (c) 2020, 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.canonicalization;
+
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.google.common.collect.ImmutableList;
+import java.io.PrintStream;
+import java.nio.file.Path;
+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 SingletonCanonicalizationWithApiLevelCheckTest extends TestBase {
+
+ private final TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return TestBase.getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ public SingletonCanonicalizationWithApiLevelCheckTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void test() throws Exception {
+ Path program =
+ testForR8(parameters.getBackend())
+ .addProgramClasses(TestClass.class, Companion.class, A.class)
+ .addLibraryClasses(LibraryVersion.class, LibraryInterfaceAddedInApi1.class)
+ .addDefaultRuntimeLibrary(parameters)
+ .addKeepMainRule(TestClass.class)
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .writeToZip();
+
+ // Run with library version 1 that includes LibraryInterfaceAddedInApi1.
+ testForR8(parameters.getBackend())
+ .addProgramClasses(LibraryVersion.class, LibraryInterfaceAddedInApi1.class)
+ .addKeepAllClassesRule()
+ .addKeepRules(getAssumeValuesRule(1))
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .addRunClasspathFiles(program)
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutputLines("A");
+
+ // Run with library version 0 that does not include LibraryInterfaceAddedInApi1.
+ testForR8(parameters.getBackend())
+ .addProgramClasses(LibraryVersion.class)
+ .addKeepAllClassesRule()
+ .addKeepRules(getAssumeValuesRule(0))
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .addRunClasspathFiles(program)
+ .run(parameters.getRuntime(), TestClass.class)
+ .apply(
+ runResult -> {
+ if (parameters.isCfRuntime()) {
+ // Constant canonicalization is disabled for CF.
+ runResult.assertSuccessWithEmptyOutput();
+ } else {
+ runResult.assertFailureWithErrorThatThrows(NoClassDefFoundError.class);
+ }
+ });
+ }
+
+ private List<String> getAssumeValuesRule(int version) {
+ return ImmutableList.of(
+ "-assumevalues class " + LibraryVersion.class.getTypeName() + " {",
+ " static int init() return " + version + ";",
+ "}");
+ }
+
+ public static class LibraryVersion {
+
+ public static int SDK_INT = init();
+
+ private static int init() {
+ return 0;
+ }
+ }
+
+ public interface LibraryInterfaceAddedInApi1 {}
+
+ static class TestClass {
+
+ public static void main(String[] args) {
+ if (LibraryVersion.SDK_INT >= 1) {
+ PrintStream out = System.out;
+ if (System.currentTimeMillis() > 0) {
+ out.println(Companion.INSTANCE);
+ } else {
+ out.print(Companion.INSTANCE);
+ }
+ }
+ }
+ }
+
+ static class Companion {
+
+ static A INSTANCE = new A();
+ }
+
+ static class A implements LibraryInterfaceAddedInApi1 {
+
+ @Override
+ public String toString() {
+ return "A";
+ }
+ }
+}
