CTS - Add scale gesture detector tests for constructor and stylus APIs

Bug: 21661739
Change-Id: I0da5dbd313cacd10c91a298808710fb7ac2391fb
diff --git a/tests/tests/view/AndroidManifest.xml b/tests/tests/view/AndroidManifest.xml
index 9ccbeb4..e5e77bc 100644
--- a/tests/tests/view/AndroidManifest.xml
+++ b/tests/tests/view/AndroidManifest.xml
@@ -150,7 +150,11 @@
         <activity android:name="android.view.cts.GestureDetectorCtsActivity"
             android:label="GestureDetectorCtsActivity"
             android:theme="@android:style/Theme.NoTitleBar.Fullscreen" />
-            
+
+        <activity android:name="android.view.cts.ScaleGestureDetectorCtsActivity"
+            android:label="ScaleGestureDetectorCtsActivity"
+            android:theme="@android:style/Theme.NoTitleBar.Fullscreen" />
+
         <activity android:name="android.view.cts.GLSurfaceViewCtsActivity"
             android:label="GLSurfaceViewCts"/>
 
diff --git a/tests/tests/view/src/android/view/cts/ScaleGestureDetectorCtsActivity.java b/tests/tests/view/src/android/view/cts/ScaleGestureDetectorCtsActivity.java
new file mode 100644
index 0000000..606d536
--- /dev/null
+++ b/tests/tests/view/src/android/view/cts/ScaleGestureDetectorCtsActivity.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2015 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.view.cts;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.os.Handler;
+import android.view.ScaleGestureDetector;
+import android.view.ScaleGestureDetector.SimpleOnScaleGestureListener;
+
+public class ScaleGestureDetectorCtsActivity extends Activity {
+
+    private ScaleGestureDetector mScaleGestureDetector;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mScaleGestureDetector = new ScaleGestureDetector(this, new SimpleOnScaleGestureListener(),
+                new Handler());
+    }
+
+    public ScaleGestureDetector getScaleGestureDetector() {
+        return mScaleGestureDetector;
+    }
+}
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diff --git a/tests/tests/view/src/android/view/cts/ScaleGestureDetectorTest.java b/tests/tests/view/src/android/view/cts/ScaleGestureDetectorTest.java
new file mode 100644
index 0000000..b8ba200
--- /dev/null
+++ b/tests/tests/view/src/android/view/cts/ScaleGestureDetectorTest.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2015 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.view.cts;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
+import android.test.ActivityInstrumentationTestCase2;
+import android.test.UiThreadTest;
+import android.view.ScaleGestureDetector;
+import android.view.ScaleGestureDetector.SimpleOnScaleGestureListener;
+
+public class ScaleGestureDetectorTest extends
+        ActivityInstrumentationTestCase2<ScaleGestureDetectorCtsActivity> {
+
+    private ScaleGestureDetector mScaleGestureDetector;
+    private ScaleGestureDetectorCtsActivity mActivity;
+    private Context mContext;
+
+    public ScaleGestureDetectorTest() {
+        super("com.android.cts.view", ScaleGestureDetectorCtsActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mActivity = getActivity();
+        mScaleGestureDetector = mActivity.getScaleGestureDetector();
+        mContext = getInstrumentation().getTargetContext();
+    }
+
+    @UiThreadTest
+    public void testConstructor() {
+        new ScaleGestureDetector(
+                mContext, new SimpleOnScaleGestureListener(), new Handler(Looper.getMainLooper()));
+        new ScaleGestureDetector(mContext, new SimpleOnScaleGestureListener());
+    }
+
+    public void testAccessStylusScaleEnabled() {
+        assertTrue(mScaleGestureDetector.isStylusScaleEnabled());
+        mScaleGestureDetector.setStylusScaleEnabled(true);
+
+        mScaleGestureDetector.setStylusScaleEnabled(false);
+        assertFalse(mScaleGestureDetector.isStylusScaleEnabled());
+    }
+}
\ No newline at end of file