1/*
2 * Copyright (C) 2018 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.hardware.display;
18
19import static org.junit.Assert.assertArrayEquals;
20import static org.junit.Assert.assertEquals;
21import static org.junit.Assert.assertNotEquals;
22import static org.junit.Assert.assertTrue;
23import static org.junit.Assert.fail;
24
25import android.os.Parcel;
26import android.support.test.filters.SmallTest;
27import android.support.test.runner.AndroidJUnit4;
28
29import org.junit.Test;
30import org.junit.runner.RunWith;
31
32import java.time.LocalDate;
33import java.util.Arrays;
34
35@SmallTest
36@RunWith(AndroidJUnit4.class)
37public class AmbientBrightnessDayStatsTest {
38
39    private static final LocalDate LOCAL_DATE = LocalDate.now();
40    private static final float[] BUCKET_BOUNDARIES = {0, 1, 10, 100};
41    private static final float[] STATS = {1.3f, 2.6f, 5.8f, 10};
42
43    @Test
44    public void testParamsMustNotBeNull() {
45        assertThrows(NullPointerException.class,
46                () -> new AmbientBrightnessDayStats(null, BUCKET_BOUNDARIES));
47
48        assertThrows(NullPointerException.class,
49                () -> new AmbientBrightnessDayStats(LOCAL_DATE, null));
50
51        assertThrows(NullPointerException.class,
52                () -> new AmbientBrightnessDayStats(null, BUCKET_BOUNDARIES, STATS));
53
54        assertThrows(NullPointerException.class,
55                () -> new AmbientBrightnessDayStats(LOCAL_DATE, null, STATS));
56    }
57
58    @Test(expected = IllegalArgumentException.class)
59    public void testBucketBoundariesMustNotBeEmpty() {
60        new AmbientBrightnessDayStats(LocalDate.now(), new float[]{});
61    }
62
63    @Test(expected = IllegalArgumentException.class)
64    public void testStatsAndBoundariesMustHaveSameLength() {
65        float[] stats = Arrays.copyOf(STATS, STATS.length + 1);
66        stats[stats.length - 1] = 0;
67        new AmbientBrightnessDayStats(LOCAL_DATE, BUCKET_BOUNDARIES, stats);
68    }
69
70    @Test
71    public void testAmbientBrightnessDayStatsAdd() {
72        AmbientBrightnessDayStats dayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
73                BUCKET_BOUNDARIES);
74        dayStats.log(0, 1);
75        dayStats.log(0.5f, 1.5f);
76        dayStats.log(50, 12.5f);
77        dayStats.log(2000, 1.24f);
78        dayStats.log(-10, 0.5f);
79        assertEquals(4, dayStats.getStats().length);
80        assertEquals(2.5f, dayStats.getStats()[0], 0);
81        assertEquals(0, dayStats.getStats()[1], 0);
82        assertEquals(12.5f, dayStats.getStats()[2], 0);
83        assertEquals(1.24f, dayStats.getStats()[3], 0);
84    }
85
86    @Test
87    public void testGetters() {
88        AmbientBrightnessDayStats dayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
89                BUCKET_BOUNDARIES, STATS);
90        assertEquals(LOCAL_DATE, dayStats.getLocalDate());
91        assertArrayEquals(BUCKET_BOUNDARIES, dayStats.getBucketBoundaries(), 0);
92        assertArrayEquals(STATS, dayStats.getStats(), 0);
93    }
94
95    @Test
96    public void testParcelUnparcelAmbientBrightnessDayStats() {
97        LocalDate today = LocalDate.now();
98        AmbientBrightnessDayStats stats = new AmbientBrightnessDayStats(today,
99                new float[]{0, 1, 10, 100}, new float[]{1.3f, 2.6f, 5.8f, 10});
100        // Parcel the data
101        Parcel parcel = Parcel.obtain();
102        stats.writeToParcel(parcel, 0);
103        byte[] parceled = parcel.marshall();
104        parcel.recycle();
105        // Unparcel and check that it has not changed
106        parcel = Parcel.obtain();
107        parcel.unmarshall(parceled, 0, parceled.length);
108        parcel.setDataPosition(0);
109        AmbientBrightnessDayStats statsAgain = AmbientBrightnessDayStats.CREATOR.createFromParcel(
110                parcel);
111        assertEquals(stats, statsAgain);
112    }
113
114    @Test
115    public void testAmbientBrightnessDayStatsEquals() {
116        AmbientBrightnessDayStats emptyDayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
117                BUCKET_BOUNDARIES);
118        AmbientBrightnessDayStats identicalEmptyDayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
119                BUCKET_BOUNDARIES, new float[BUCKET_BOUNDARIES.length]);
120        assertEquals(emptyDayStats, identicalEmptyDayStats);
121        assertEquals(emptyDayStats.hashCode(), identicalEmptyDayStats.hashCode());
122
123        AmbientBrightnessDayStats dayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
124                BUCKET_BOUNDARIES, STATS);
125        AmbientBrightnessDayStats identicalDayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
126                BUCKET_BOUNDARIES, STATS);
127        assertEquals(dayStats, identicalDayStats);
128        assertEquals(dayStats.hashCode(), identicalDayStats.hashCode());
129
130        assertNotEquals(emptyDayStats, dayStats);
131        assertNotEquals(emptyDayStats.hashCode(), dayStats.hashCode());
132
133        AmbientBrightnessDayStats differentDateDayStats = new AmbientBrightnessDayStats(
134                LOCAL_DATE.plusDays(1), BUCKET_BOUNDARIES, STATS);
135        assertNotEquals(dayStats, differentDateDayStats);
136        assertNotEquals(dayStats.hashCode(), differentDateDayStats.hashCode());
137
138        float[] differentStats = Arrays.copyOf(STATS, STATS.length);
139        differentStats[differentStats.length - 1] += 5f;
140        AmbientBrightnessDayStats differentStatsDayStats = new AmbientBrightnessDayStats(LOCAL_DATE,
141                BUCKET_BOUNDARIES, differentStats);
142        assertNotEquals(dayStats, differentDateDayStats);
143        assertNotEquals(dayStats.hashCode(), differentStatsDayStats.hashCode());
144
145        float[] differentBucketBoundaries = Arrays.copyOf(BUCKET_BOUNDARIES,
146                BUCKET_BOUNDARIES.length);
147        differentBucketBoundaries[differentBucketBoundaries.length - 1] += 100f;
148        AmbientBrightnessDayStats differentBoundariesDayStats = new AmbientBrightnessDayStats(
149                LOCAL_DATE, differentBucketBoundaries, STATS);
150        assertNotEquals(dayStats, differentBoundariesDayStats);
151        assertNotEquals(dayStats.hashCode(), differentBoundariesDayStats.hashCode());
152    }
153
154    private interface ExceptionRunnable {
155        void run() throws Exception;
156    }
157
158    private static void assertThrows(Class<? extends Throwable> exceptionClass,
159            ExceptionRunnable r) {
160        try {
161            r.run();
162        } catch (Throwable e) {
163            assertTrue("Expected exception type " + exceptionClass.getName() + " but got "
164                    + e.getClass().getName(), exceptionClass.isAssignableFrom(e.getClass()));
165            return;
166        }
167        fail("Expected exception type " + exceptionClass.getName()
168                + ", but no exception was thrown");
169    }
170
171}
172