| // 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.keptgraph; |
| |
| import static com.android.tools.r8.references.Reference.classFromClass; |
| import static com.android.tools.r8.references.Reference.methodFromMethod; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.references.ClassReference; |
| import com.android.tools.r8.references.MethodReference; |
| import com.android.tools.r8.shaking.WhyAreYouKeepingConsumer; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.graphinspector.GraphInspector; |
| import com.android.tools.r8.utils.graphinspector.GraphInspector.QueryNode; |
| import java.io.ByteArrayOutputStream; |
| import java.io.PrintStream; |
| 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 KeptByKeepClassMembersTestRunner extends TestBase { |
| |
| private static final Class<?> CLASS = KeptByKeepClassMembersTest.class; |
| private static final String PKG = CLASS.getPackage().getName(); |
| private final String EXPECTED = StringUtils.lines("called bar"); |
| private final String EXPECTED_WHYAREYOUKEEPING = |
| StringUtils.lines( |
| "void " + PKG + ".KeptByKeepClassMembersTest.baz()", |
| "|- is referenced in keep rule:", |
| "| -keepclassmembers class " |
| + PKG |
| + ".KeptByKeepClassMembersTest { static void baz(); }", |
| "|- is satisfied with precondition:", |
| "| " + PKG + ".KeptByKeepClassMembersTest", |
| "|- is referenced in keep rule:", |
| "| -keep class " |
| + PKG |
| + ".KeptByKeepClassMembersTest" |
| + " { public static void main(java.lang.String[]); }"); |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().withAllApiLevels().build(); |
| } |
| |
| public KeptByKeepClassMembersTestRunner(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testKeptMethod() throws Exception { |
| ClassReference clazz = classFromClass(CLASS); |
| MethodReference mainMethod = methodFromMethod(CLASS.getDeclaredMethod("main", String[].class)); |
| MethodReference barMethod = methodFromMethod(CLASS.getDeclaredMethod("bar")); |
| MethodReference bazMethod = methodFromMethod(CLASS.getDeclaredMethod("baz")); |
| |
| String keepClassMembersRuleContent = |
| "-keepclassmembers class " |
| + KeptByKeepClassMembersTest.class.getTypeName() |
| + " { static void baz(); }"; |
| |
| WhyAreYouKeepingConsumer whyAreYouKeepingConsumer = new WhyAreYouKeepingConsumer(null); |
| GraphInspector inspector = |
| testForR8(parameters.getBackend()) |
| .enableGraphInspector(whyAreYouKeepingConsumer) |
| .enableInliningAnnotations() |
| .addProgramClasses(CLASS) |
| .addKeepMainRule(KeptByKeepClassMembersTest.class) |
| .addKeepRules(keepClassMembersRuleContent) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), CLASS) |
| .assertSuccessWithOutput(EXPECTED) |
| .graphInspector(); |
| |
| // The only root should be the keep main rule. |
| assertEquals(1, inspector.getRoots().size()); |
| QueryNode keepMainRule = inspector.rule(Origin.unknown(), 1, 1).assertRoot(); |
| QueryNode keepClassMembersRule = inspector.rule(keepClassMembersRuleContent).assertNotRoot(); |
| |
| // Check that the call chain goes from root -> main(unchanged) -> bar(renamed). |
| inspector.method(barMethod).assertRenamed().assertInvokedFrom(mainMethod); |
| inspector.method(mainMethod).assertNotRenamed().assertKeptBy(keepMainRule); |
| |
| // Check baz is kept by the dependent rule. |
| inspector.method(bazMethod).assertNotRenamed().assertKeptBy(keepClassMembersRule); |
| |
| // Regression for b/131822600, the dependent rule must be satisfied by Bar being kept. |
| keepClassMembersRule.assertSatisfiedBy(inspector.clazz(clazz)); |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| whyAreYouKeepingConsumer.printWhyAreYouKeeping(bazMethod, new PrintStream(baos)); |
| assertEquals(EXPECTED_WHYAREYOUKEEPING, baos.toString()); |
| } |
| } |