1/*
2 * Copyright (C) 2015 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
17package android.support.v7.graphics;
18
19import org.junit.Test;
20import org.junit.runner.RunWith;
21
22import android.graphics.Bitmap;
23import android.graphics.BitmapFactory;
24import android.support.test.runner.AndroidJUnit4;
25import android.test.InstrumentationTestCase;
26import android.test.suitebuilder.annotation.MediumTest;
27
28import static android.support.v7.graphics.TestUtils.loadSampleBitmap;
29import static org.junit.Assert.assertEquals;
30
31@RunWith(AndroidJUnit4.class)
32public class ConsistencyTest {
33
34    private static final int NUMBER_TRIALS = 10;
35
36    @Test
37    @MediumTest
38    public void testConsistency() {
39        Palette lastPalette = null;
40        final Bitmap bitmap = loadSampleBitmap();
41
42        for (int i = 0; i < NUMBER_TRIALS; i++) {
43            Palette newPalette = Palette.from(bitmap).generate();
44            if (lastPalette != null) {
45                assetPalettesEqual(lastPalette, newPalette);
46            }
47            lastPalette = newPalette;
48        }
49    }
50
51    private static void assetPalettesEqual(Palette p1, Palette p2) {
52        assertEquals(p1.getVibrantSwatch(), p2.getVibrantSwatch());
53        assertEquals(p1.getLightVibrantSwatch(), p2.getLightVibrantSwatch());
54        assertEquals(p1.getDarkVibrantSwatch(), p2.getDarkVibrantSwatch());
55        assertEquals(p1.getMutedSwatch(), p2.getMutedSwatch());
56        assertEquals(p1.getLightMutedSwatch(), p2.getLightMutedSwatch());
57        assertEquals(p1.getDarkMutedSwatch(), p2.getDarkMutedSwatch());
58    }
59}
60