1/*
2 * Copyright (C) 2014 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 */
16package android.support.v4.widget;
17
18import android.content.Context;
19import android.test.AndroidTestCase;
20import android.util.Log;
21import android.view.animation.AnimationUtils;
22import android.view.animation.Interpolator;
23import android.view.animation.LinearInterpolator;
24
25import java.lang.reflect.Constructor;
26import java.lang.reflect.Field;
27import java.lang.reflect.InvocationTargetException;
28
29abstract public class ScrollerCompatTestBase extends AndroidTestCase {
30
31    private static final boolean DEBUG = false;
32
33    private final String TAG;
34
35    private final int mApiLevel;
36
37    private ScrollerCompat mScroller;
38
39    public ScrollerCompatTestBase(int apiLevel) {
40        mApiLevel = apiLevel;
41        TAG = "ScrollerCompatTest api:" + apiLevel;
42    }
43
44    protected void createScroller(Interpolator interpolator)
45            throws NoSuchMethodException, IllegalAccessException, InvocationTargetException,
46            InstantiationException {
47        Constructor<ScrollerCompat> constructor = ScrollerCompat.class
48                .getDeclaredConstructor(int.class, Context.class, Interpolator.class);
49        constructor.setAccessible(true);
50        mScroller = constructor.newInstance(mApiLevel, getContext(), interpolator);
51    }
52
53    public void testTargetReached() throws Throwable {
54        if (DEBUG) {
55            Log.d(TAG, "testing if target is reached");
56        }
57        createScroller(null);
58        mScroller.fling(0, 0, 0, 1000,
59                Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);
60        int target = mScroller.getFinalY();
61        while (mScroller.computeScrollOffset()) {
62            Thread.sleep(100);
63        }
64        assertEquals("given enough time, scroller should reach target position", target,
65                mScroller.getCurrY());
66    }
67
68    public void testAbort() throws Throwable {
69        if (DEBUG) {
70            Log.d(TAG, "testing abort");
71        }
72        createScroller(null);
73        mScroller.fling(0, 0, 0, 10000,
74                Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);
75        assertTrue("Scroller should have some offset", mScroller.computeScrollOffset());
76        mScroller.abortAnimation();
77        assertFalse("Scroller should clear offset after being aborted",
78                mScroller.computeScrollOffset());
79    }
80}
81