Error prone checks for mutability flags on PI
Add a mutability flag check for all method calls that create a PendingIntent. Bug: 160794467 Test: atest error_prone_android_framework_test:com.google.errorprone.bugpatterns.android.PendingIntentMutabilityCheckerTest Change-Id: I26a51a6dddb2793e9a56e72876f3f9d2aea4e3fb
This commit is contained in:
Ashwini Oruganti
@@ -0,0 +1,81 @@
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.errorprone.bugpatterns.android;
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import static com.google.errorprone.BugPattern.SeverityLevel.WARNING;
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import static com.google.errorprone.matchers.FieldMatchers.staticField;
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import static com.google.errorprone.matchers.Matchers.anyOf;
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import static com.google.errorprone.matchers.Matchers.contains;
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import static com.google.errorprone.matchers.Matchers.methodInvocation;
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import static com.google.errorprone.matchers.Matchers.staticMethod;
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import com.google.auto.service.AutoService;
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import com.google.errorprone.BugPattern;
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import com.google.errorprone.VisitorState;
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import com.google.errorprone.bugpatterns.BugChecker;
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import com.google.errorprone.bugpatterns.BugChecker.MethodInvocationTreeMatcher;
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import com.google.errorprone.matchers.Description;
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import com.google.errorprone.matchers.Matcher;
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import com.sun.source.tree.ExpressionTree;
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import com.sun.source.tree.MethodInvocationTree;
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import java.util.regex.Pattern;
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/**
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* Any method calls to create a PendingIntent require that one of the
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* mutability flags, FLAG_MUTABLE or FLAG_IMMUTABLE, be explicitly specified.
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* This checker verifies that one of these mutability flags are used when
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* creating PendingIntents.
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*/
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@AutoService(BugChecker.class)
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@BugPattern(
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name = "AndroidFrameworkPendingIntentMutability",
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summary = "Verifies that FLAG_MUTABLE or FLAG_IMMUTABLE is always set",
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severity = WARNING)
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public final class PendingIntentMutabilityChecker extends BugChecker
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implements MethodInvocationTreeMatcher {
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private static final Matcher<ExpressionTree> PENDING_INTENT_METHOD = methodInvocation(
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staticMethod()
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.onClass("android.app.PendingIntent")
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.withNameMatching(Pattern.compile(
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"^(getActivity|getActivityAsUser|getActivities|getActivitiesAsUser|"
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+ "getBroadcast|getBroadcastAsUser|getService|getForegroundService).*")));
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private static final Matcher<ExpressionTree> VALID_FLAGS = anyOf(
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staticField("android.app.PendingIntent", "FLAG_MUTABLE"),
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staticField("android.app.PendingIntent", "FLAG_IMMUTABLE"));
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private static final Matcher<ExpressionTree> CONTAINS_VALID_FLAGS = contains(
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ExpressionTree.class, VALID_FLAGS);
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@Override
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public Description matchMethodInvocation(MethodInvocationTree tree, VisitorState state) {
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if (PENDING_INTENT_METHOD.matches(tree, state)) {
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final ExpressionTree arg = tree.getArguments().get(3);
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if (!(VALID_FLAGS.matches(arg, state) || CONTAINS_VALID_FLAGS.matches(arg, state))) {
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return buildDescription(arg)
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.setMessage("To improve security, PendingIntents must declare one of"
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+ " FLAG_MUTABLE or FLAG_IMMUTABLE explicitly; see"
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+ " go/immutable-pendingintents for more details")
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.build();
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}
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}
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return Description.NO_MATCH;
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}
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}
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@@ -0,0 +1,292 @@
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.errorprone.bugpatterns.android;
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import com.google.errorprone.CompilationTestHelper;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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@RunWith(JUnit4.class)
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public class PendingIntentMutabilityCheckerTest {
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private CompilationTestHelper mCompilationHelper;
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@Before
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public void setUp() {
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mCompilationHelper = CompilationTestHelper.newInstance(
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PendingIntentMutabilityChecker.class, getClass());
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}
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@Test
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public void testGetActivity() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_MUTABLE);",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_IMMUTABLE);",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getActivity(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_ONE_SHOT);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivity(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivity(context, 42, intent, 0);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetActivityAsUser() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_MUTABLE, null, null);",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_IMMUTABLE, null, null);",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null, null);",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null, null);",
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" PendingIntent.getActivityAsUser(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_ONE_SHOT, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivityAsUser(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivityAsUser(context, 42, intent, 0, null, null);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetActivities() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent[] intents;",
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" void example() {",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_MUTABLE, null);",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_IMMUTABLE, null);",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null);",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null);",
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" PendingIntent.getActivities(context, 42, intents, 0 | PendingIntent.FLAG_MUTABLE, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_ONE_SHOT, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivities(context, 42, intents, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivities(context, 42, intents, 0, null);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetActivitiesAsUser() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent[] intents;",
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" void example() {",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_MUTABLE, null, null);",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_IMMUTABLE, null, null);",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null, null);",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null, null);",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, 0 | PendingIntent.FLAG_MUTABLE, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_ONE_SHOT, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE, null, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getActivitiesAsUser(context, 42, intents, 0, null, null);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetBroadcast() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_MUTABLE);",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_IMMUTABLE);",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getBroadcast(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_ONE_SHOT);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcast(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcast(context, 42, intent, 0);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetBroadcastAsUser() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_MUTABLE, null);",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_IMMUTABLE, null);",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null);",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT, null);",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_ONE_SHOT, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE, null);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getBroadcastAsUser(context, 42, intent, 0, null);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetService() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_MUTABLE);",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_IMMUTABLE);",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getService(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_ONE_SHOT);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getService(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getService(context, 42, intent, 0);",
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" }",
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"}")
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.doTest();
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}
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@Test
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public void testGetForegroundService() {
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mCompilationHelper
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.addSourceFile("/android/app/PendingIntent.java")
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.addSourceFile("/android/content/Context.java")
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.addSourceFile("/android/content/Intent.java")
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.addSourceFile("/android/os/UserHandle.java")
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.addSourceFile("/android/os/Bundle.java")
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.addSourceLines("Example.java",
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"import android.app.PendingIntent;",
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"import android.content.Context;",
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"import android.content.Intent;",
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"public class Example {",
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" Context context;",
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" Intent intent;",
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" void example() {",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_MUTABLE);",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_IMMUTABLE);",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_ONE_SHOT);",
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" PendingIntent.getForegroundService(context, 42, intent, 0 | PendingIntent.FLAG_MUTABLE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_ONE_SHOT);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getForegroundService(context, 42, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_NO_CREATE);",
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" // BUG: Diagnostic contains:",
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" PendingIntent.getForegroundService(context, 42, intent, 0);",
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" }",
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"}")
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.doTest();
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}
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}
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69
errorprone/tests/res/android/app/PendingIntent.java
Normal file
69
errorprone/tests/res/android/app/PendingIntent.java
Normal file
@@ -0,0 +1,69 @@
|
||||
/*
|
||||
* Copyright (C) 2020 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package android.app;
|
||||
|
||||
import android.content.Context;
|
||||
import android.content.Intent;
|
||||
import android.os.Bundle;
|
||||
import android.os.UserHandle;
|
||||
|
||||
public class PendingIntent {
|
||||
public static final int FLAG_ONE_SHOT = 1<<30;
|
||||
public static final int FLAG_IMMUTABLE = 1<<26;
|
||||
public static final int FLAG_MUTABLE = 1<<25;
|
||||
public static final int FLAG_NO_CREATE = 1<<29;
|
||||
|
||||
public static PendingIntent getActivity(Context context, int requestCode,
|
||||
Intent intent, int flags) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getActivityAsUser(Context context, int requestCode,
|
||||
Intent intent, int flags, Bundle options, UserHandle user) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getActivities(Context context, int requestCode,
|
||||
Intent[] intents, int flags, Bundle options) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getActivitiesAsUser(Context context, int requestCode,
|
||||
Intent[] intents, int flags, Bundle options, UserHandle user) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getBroadcast(Context context, int requestCode,
|
||||
Intent intent, int flags) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getBroadcastAsUser(Context context, int requestCode,
|
||||
Intent intent, int flags, UserHandle userHandle) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getService(Context context, int requestCode,
|
||||
Intent intent, int flags) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
public static PendingIntent getForegroundService(Context context, int requestCode,
|
||||
Intent intent, int flags) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
}
|
||||
20
errorprone/tests/res/android/content/Intent.java
Normal file
20
errorprone/tests/res/android/content/Intent.java
Normal file
@@ -0,0 +1,20 @@
|
||||
/*
|
||||
* Copyright (C) 2020 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package android.content;
|
||||
|
||||
public class Intent {
|
||||
}
|
||||
20
errorprone/tests/res/android/os/Bundle.java
Normal file
20
errorprone/tests/res/android/os/Bundle.java
Normal file
@@ -0,0 +1,20 @@
|
||||
/*
|
||||
* Copyright (C) 2020 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package android.os;
|
||||
|
||||
public class Bundle {
|
||||
}
|
||||
Reference in New Issue
Block a user