Test that -assumenosideeffects removes the field-get
Bug: 123080377
Change-Id: I0bb8b5a186c4cfc68be33f6c1b674b79a63704f4
diff --git a/src/test/java/com/android/tools/r8/shaking/assumenosideeffects/AssumeNoSideEffectsRuleRemovesFieldReadTest.java b/src/test/java/com/android/tools/r8/shaking/assumenosideeffects/AssumeNoSideEffectsRuleRemovesFieldReadTest.java
new file mode 100644
index 0000000..441745e
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/assumenosideeffects/AssumeNoSideEffectsRuleRemovesFieldReadTest.java
@@ -0,0 +1,93 @@
+// 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.assumenosideeffects;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+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.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.CodeInspector;
+import com.android.tools.r8.utils.codeinspector.InstructionSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class AssumeNoSideEffectsRuleRemovesFieldReadTest extends TestBase {
+
+ private static final String OUT_SIGNATURE = "java.io.PrintStream java.lang.System.out";
+
+ private final TestParameters parameters;
+
+ @Parameterized.Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimes().build();
+ }
+
+ public AssumeNoSideEffectsRuleRemovesFieldReadTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void test() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(AssumeNoSideEffectsRuleRemovesFieldReadTest.class)
+ .addKeepMainRule(TestClass.class)
+ .addKeepRules(
+ "-assumenosideeffects class " + A.class.getTypeName() + " {",
+ " static boolean booleanField return true;",
+ " static int intField return 0..42;",
+ "}")
+ .setMinApi(parameters.getRuntime())
+ .compile()
+ .inspect(this::verifyFieldIsAbsent)
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutputLines("Hello world!");
+ }
+
+ private void verifyFieldIsAbsent(CodeInspector inspector) {
+ ClassSubject testClassSubject = inspector.clazz(TestClass.class);
+ assertThat(testClassSubject, isPresent());
+
+ MethodSubject methodSubject = testClassSubject.mainMethod();
+ assertThat(methodSubject, isPresent());
+ assertTrue(
+ methodSubject
+ .streamInstructions()
+ .filter(InstructionSubject::isStaticGet)
+ .allMatch(staticGet -> staticGet.getField().toSourceString().equals(OUT_SIGNATURE)));
+
+ ClassSubject otherClassSubject = inspector.clazz(A.class);
+ assertThat(otherClassSubject, not(isPresent()));
+ }
+
+ static class TestClass {
+
+ public static void main(String[] args) {
+ if (A.booleanField) {
+ System.out.print("Hello");
+ }
+ if (A.intField >= 0) {
+ System.out.println(" world!");
+ }
+ }
+ }
+
+ static class A {
+
+ static {
+ System.out.println("A.<clinit>()");
+ }
+
+ static boolean booleanField = false;
+ static int intField = -1;
+ }
+}
