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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.widget.cts;
     18 
     19 import static org.junit.Assert.assertEquals;
     20 import static org.junit.Assert.assertFalse;
     21 import static org.junit.Assert.assertSame;
     22 import static org.junit.Assert.assertTrue;
     23 
     24 import android.app.Activity;
     25 import android.app.Instrumentation;
     26 import android.os.SystemClock;
     27 import android.support.test.InstrumentationRegistry;
     28 import android.support.test.annotation.UiThreadTest;
     29 import android.support.test.filters.LargeTest;
     30 import android.support.test.filters.MediumTest;
     31 import android.support.test.rule.ActivityTestRule;
     32 import android.support.test.runner.AndroidJUnit4;
     33 import android.util.AttributeSet;
     34 import android.util.Xml;
     35 import android.view.View;
     36 import android.widget.TextView;
     37 import android.widget.ViewFlipper;
     38 
     39 import org.junit.Before;
     40 import org.junit.Rule;
     41 import org.junit.Test;
     42 import org.junit.runner.RunWith;
     43 import org.xmlpull.v1.XmlPullParser;
     44 
     45 /**
     46  * Test {@link ViewFlipper}.
     47  */
     48 @MediumTest
     49 @RunWith(AndroidJUnit4.class)
     50 public class ViewFlipperTest {
     51     private Instrumentation mInstrumentation;
     52     private Activity mActivity;
     53 
     54     @Rule
     55     public ActivityTestRule<ViewFlipperCtsActivity> mActivityRule =
     56             new ActivityTestRule<>(ViewFlipperCtsActivity.class);
     57 
     58     @Before
     59     public void setup() {
     60         mInstrumentation = InstrumentationRegistry.getInstrumentation();
     61         mActivity = mActivityRule.getActivity();
     62     }
     63 
     64     @UiThreadTest
     65     @Test
     66     public void testConstructor() {
     67         new ViewFlipper(mActivity);
     68 
     69         new ViewFlipper(mActivity, null);
     70 
     71         XmlPullParser parser = mActivity.getResources().getXml(R.layout.viewflipper_layout);
     72         AttributeSet attrs = Xml.asAttributeSet(parser);
     73         new ViewFlipper(mActivity, attrs);
     74     }
     75 
     76     @UiThreadTest
     77     @Test(expected=NullPointerException.class)
     78     public void testConstructorNullContext() {
     79         new ViewFlipper(null, null);
     80     }
     81 
     82     @UiThreadTest
     83     @Test
     84     public void testSetFlipInterval() {
     85         ViewFlipper viewFlipper = new ViewFlipper(mActivity);
     86         viewFlipper.setFlipInterval(0);
     87         viewFlipper.setFlipInterval(-1);
     88     }
     89 
     90     @LargeTest
     91     @Test
     92     public void testViewFlipper() throws Throwable {
     93         final int flipInterval = mActivity.getResources().getInteger(
     94                 R.integer.view_flipper_interval);
     95 
     96         mActivityRule.runOnUiThread(() -> {
     97             ViewFlipper viewFlipper =
     98                     (ViewFlipper) mActivity.findViewById(R.id.viewflipper_test);
     99 
    100             TextView iv1 = (TextView) mActivity.findViewById(R.id.viewflipper_textview1);
    101             TextView iv2 = (TextView) mActivity.findViewById(R.id.viewflipper_textview2);
    102 
    103             assertFalse(viewFlipper.isFlipping());
    104             assertSame(iv1, viewFlipper.getCurrentView());
    105 
    106             viewFlipper.startFlipping();
    107             assertTrue(viewFlipper.isFlipping());
    108             assertSame(iv1, viewFlipper.getCurrentView());
    109             assertEquals(View.VISIBLE, iv1.getVisibility());
    110             assertEquals(View.GONE, iv2.getVisibility());
    111         });
    112 
    113         // wait for a longer time to make sure the view flipping is completed.
    114         SystemClock.sleep(flipInterval + 200);
    115         mInstrumentation.waitForIdleSync();
    116         mActivityRule.runOnUiThread(() -> {
    117             ViewFlipper viewFlipper =
    118                     (ViewFlipper) mActivity.findViewById(R.id.viewflipper_test);
    119 
    120             TextView iv1 = (TextView) mActivity.findViewById(R.id.viewflipper_textview1);
    121             TextView iv2 = (TextView) mActivity.findViewById(R.id.viewflipper_textview2);
    122 
    123             assertSame(iv2, viewFlipper.getCurrentView());
    124             assertEquals(View.GONE, iv1.getVisibility());
    125             assertEquals(View.VISIBLE, iv2.getVisibility());
    126         });
    127 
    128         SystemClock.sleep(flipInterval + 200);
    129         mInstrumentation.waitForIdleSync();
    130         mActivityRule.runOnUiThread(() -> {
    131             ViewFlipper viewFlipper =
    132                     (ViewFlipper) mActivity.findViewById(R.id.viewflipper_test);
    133 
    134             TextView iv1 = (TextView) mActivity.findViewById(R.id.viewflipper_textview1);
    135             TextView iv2 = (TextView) mActivity.findViewById(R.id.viewflipper_textview2);
    136 
    137             assertSame(iv1, viewFlipper.getCurrentView());
    138             assertEquals(View.VISIBLE, iv1.getVisibility());
    139             assertEquals(View.GONE, iv2.getVisibility());
    140 
    141             viewFlipper.stopFlipping();
    142             assertFalse(viewFlipper.isFlipping());
    143         });
    144     }
    145 }
    146