Test for issue #29422027: APR: Runtime restarts in system_server

Change-Id: I644ae8da23c7a1ef4e00cfcc59f8b04c639f62e7
diff --git a/tests/tests/security/src/android/security/cts/DeviceIdleControllerTest.java b/tests/tests/security/src/android/security/cts/DeviceIdleControllerTest.java
new file mode 100644
index 0000000..0b183aa
--- /dev/null
+++ b/tests/tests/security/src/android/security/cts/DeviceIdleControllerTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016 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.security.cts;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.PowerManager;
+import android.os.RemoteException;
+import android.os.ResultReceiver;
+import android.os.ServiceManager;
+import android.test.AndroidTestCase;
+
+import java.io.FileDescriptor;
+
+/**
+ * Check past exploits of DeviceIdleController.
+ */
+public class DeviceIdleControllerTest extends AndroidTestCase {
+    int mResult;
+
+    /**
+     * Verify that the command line interface can not be used to add an app to the whitelist.
+     */
+    public void testAddWhiteList() {
+        final IBinder service = ServiceManager.getService("deviceidle");
+        final Object mSync = new Object();
+        mResult = 0;
+        try {
+            service.shellCommand(FileDescriptor.in, FileDescriptor.out, FileDescriptor.err,
+                    new String[]{"whitelist", "+" + mContext.getPackageName()},
+                    new ResultReceiver(null) {
+                        @Override
+                        protected void onReceiveResult(int resultCode, Bundle resultData) {
+                            mResult = resultCode;
+                            synchronized (mSync) {
+                                mSync.notifyAll();
+                            }
+                        }
+                    });
+        } catch (RemoteException e) {
+        }
+        try {
+            synchronized (mSync) {
+                mSync.wait();
+            }
+        } catch (InterruptedException e) {
+        }
+        assertEquals(-1, mResult);
+        PowerManager pm = mContext.getSystemService(PowerManager.class);
+        assertFalse(pm.isIgnoringBatteryOptimizations(mContext.getPackageName()));
+    }
+}
+