Merge "Add unit tests for AppOpsService."
diff --git a/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java b/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java
new file mode 100644
index 0000000..ad21a78
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java
@@ -0,0 +1,228 @@
+/*
+ * Copyright (C) 2018 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 com.android.server;
+
+import static android.app.AppOpsManager.MODE_ALLOWED;
+import static android.app.AppOpsManager.MODE_ERRORED;
+import static android.app.AppOpsManager.OP_READ_SMS;
+import static android.app.AppOpsManager.OP_WRITE_SMS;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth.assertWithMessage;
+
+import android.app.AppOpsManager.OpEntry;
+import android.app.AppOpsManager.PackageOps;
+import android.content.Context;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.Process;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.util.List;
+
+/**
+ * Unit tests for AppOpsService. Covers functionality that is difficult to test using CTS tests
+ * or for which we can write more detailed unit tests than CTS tests (because the internal APIs are
+ * more finegrained data than the public ones).
+ */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class AppOpsServiceTest {
+
+    private static final String TAG = AppOpsServiceTest.class.getSimpleName();
+    // State will be persisted into this XML file.
+    private static final String APP_OPS_FILENAME = "appops-service-test.xml";
+
+    private File mAppOpsFile;
+    private Context mContext;
+    private Handler mHandler;
+    private AppOpsService mAppOpsService;
+    private String mMyPackageName;
+    private int mMyUid;
+    private long mTestStartMillis;
+
+    @Before
+    public void setUp() {
+        mContext = InstrumentationRegistry.getTargetContext();
+        mAppOpsFile = new File(mContext.getFilesDir(), APP_OPS_FILENAME);
+        if (mAppOpsFile.exists()) {
+            // Start with a clean state (persisted into XML).
+            mAppOpsFile.delete();
+        }
+
+        HandlerThread handlerThread = new HandlerThread(TAG);
+        handlerThread.start();
+        mHandler = new Handler(handlerThread.getLooper());
+        mMyPackageName = mContext.getOpPackageName();
+        mMyUid = Process.myUid();
+
+        mAppOpsService = new AppOpsService(mAppOpsFile, mHandler);
+        mAppOpsService.mContext = mContext;
+        mTestStartMillis = System.currentTimeMillis();
+    }
+
+    @Test
+    public void testGetOpsForPackage_noOpsLogged() {
+        assertThat(getLoggedOps()).isNull();
+    }
+
+    @Test
+    public void testNoteOperationAndGetOpsForPackage() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.setMode(OP_WRITE_SMS, mMyUid, mMyPackageName, MODE_ERRORED);
+
+        // Note an op that's allowed.
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+        List<PackageOps> loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+
+        // Note another op that's not allowed.
+        mAppOpsService.noteOperation(OP_WRITE_SMS, mMyUid, mMyPackageName);
+        loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+        assertContainsOp(loggedOps, OP_WRITE_SMS, -1, mTestStartMillis, MODE_ERRORED);
+    }
+
+    // Tests the dumping and restoring of the in-memory state to/from XML.
+    @Test
+    public void testStatePersistence() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.setMode(OP_WRITE_SMS, mMyUid, mMyPackageName, MODE_ERRORED);
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+        mAppOpsService.noteOperation(OP_WRITE_SMS, mMyUid, mMyPackageName);
+        mAppOpsService.writeState();
+
+        // Create a new app ops service, and initialize its state from XML.
+        mAppOpsService = new AppOpsService(mAppOpsFile, mHandler);
+        mAppOpsService.mContext = mContext;
+        mAppOpsService.readState();
+
+        // Query the state of the 2nd service.
+        List<PackageOps> loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+        assertContainsOp(loggedOps, OP_WRITE_SMS, -1, mTestStartMillis, MODE_ERRORED);
+    }
+
+    // Tests that ops are persisted during shutdown.
+    @Test
+    public void testShutdown() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+        mAppOpsService.shutdown();
+
+        // Create a new app ops service, and initialize its state from XML.
+        mAppOpsService = new AppOpsService(mAppOpsFile, mHandler);
+        mAppOpsService.mContext = mContext;
+        mAppOpsService.readState();
+
+        // Query the state of the 2nd service.
+        List<PackageOps> loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+    }
+
+    @Test
+    public void testGetOpsForPackage() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+
+        // Query all ops
+        List<PackageOps> loggedOps = mAppOpsService.getOpsForPackage(
+                mMyUid, mMyPackageName, null /* all ops */);
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+
+        // Query specific ops
+        loggedOps = mAppOpsService.getOpsForPackage(
+                mMyUid, mMyPackageName, new int[]{OP_READ_SMS, OP_WRITE_SMS});
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+
+        // Query unknown UID
+        loggedOps = mAppOpsService.getOpsForPackage(mMyUid + 1, mMyPackageName, null /* all ops */);
+        assertThat(loggedOps).isNull();
+
+        // Query unknown package name
+        loggedOps = mAppOpsService.getOpsForPackage(mMyUid, "fake.package", null /* all ops */);
+        assertThat(loggedOps).isNull();
+
+        // Query op code that's not been logged
+        loggedOps = mAppOpsService.getOpsForPackage(mMyUid, mMyPackageName,
+                new int[]{OP_WRITE_SMS});
+        assertThat(loggedOps).isNull();
+    }
+
+    @Test
+    public void testPackageRemoved() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+
+        List<PackageOps> loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+
+        mAppOpsService.packageRemoved(mMyUid, mMyPackageName);
+        assertThat(getLoggedOps()).isNull();
+    }
+
+    @Test
+    public void testUidRemoved() {
+        mAppOpsService.setMode(OP_READ_SMS, mMyUid, mMyPackageName, MODE_ALLOWED);
+        mAppOpsService.noteOperation(OP_READ_SMS, mMyUid, mMyPackageName);
+
+        List<PackageOps> loggedOps = getLoggedOps();
+        assertContainsOp(loggedOps, OP_READ_SMS, mTestStartMillis, -1, MODE_ALLOWED);
+
+        mAppOpsService.uidRemoved(mMyUid);
+        assertThat(getLoggedOps()).isNull();
+    }
+
+    private List<PackageOps> getLoggedOps() {
+        return mAppOpsService.getOpsForPackage(mMyUid, mMyPackageName, null /* all ops */);
+    }
+
+    private void assertContainsOp(List<PackageOps> loggedOps, int opCode, long minMillis,
+            long minRejectMillis, int mode) {
+
+        boolean opLogged = false;
+        for (PackageOps pkgOps : loggedOps) {
+            assertWithMessage("Unexpected UID").that(mMyUid).isEqualTo(pkgOps.getUid());
+            assertWithMessage("Unexpected package name").that(mMyPackageName).isEqualTo(
+                    pkgOps.getPackageName());
+
+            for (OpEntry opEntry : pkgOps.getOps()) {
+                if (opCode != opEntry.getOp()) {
+                    continue;
+                }
+                opLogged = true;
+
+                assertWithMessage("Unexpected mode").that(mode).isEqualTo(opEntry.getMode());
+                if (minMillis > 0) {
+                    assertWithMessage("Unexpected timestamp")
+                            .that(opEntry.getTime()).isAtLeast(minMillis);
+                }
+                if (minRejectMillis > 0) {
+                    assertWithMessage("Unexpected rejection timestamp")
+                            .that(opEntry.getRejectTime()).isAtLeast(minRejectMillis);
+                }
+            }
+        }
+        assertWithMessage("Op was not logged").that(opLogged).isTrue();
+    }
+}