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 */
16
17#include <androidfw/ResourceTypes.h>
18#include <utils/Log.h>
19#include <utils/String8.h>
20#include <utils/Vector.h>
21
22#include "TestHelpers.h"
23#include <gtest/gtest.h>
24
25namespace android {
26
27static ResTable_config selectBest(const ResTable_config& target,
28        const Vector<ResTable_config>& configs) {
29    ResTable_config bestConfig;
30    memset(&bestConfig, 0, sizeof(bestConfig));
31    const size_t configCount = configs.size();
32    for (size_t i = 0; i < configCount; i++) {
33        const ResTable_config& thisConfig = configs[i];
34        if (!thisConfig.match(target)) {
35            continue;
36        }
37
38        if (thisConfig.isBetterThan(bestConfig, &target)) {
39            bestConfig = thisConfig;
40        }
41    }
42    return bestConfig;
43}
44
45static ResTable_config buildDensityConfig(int density) {
46    ResTable_config config;
47    memset(&config, 0, sizeof(config));
48    config.density = uint16_t(density);
49    config.sdkVersion = 4;
50    return config;
51}
52
53TEST(ConfigTest, shouldSelectBestDensity) {
54    ResTable_config deviceConfig;
55    memset(&deviceConfig, 0, sizeof(deviceConfig));
56    deviceConfig.density = ResTable_config::DENSITY_XHIGH;
57    deviceConfig.sdkVersion = 21;
58
59    Vector<ResTable_config> configs;
60
61    ResTable_config expectedBest = buildDensityConfig(ResTable_config::DENSITY_HIGH);
62    configs.add(expectedBest);
63    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
64
65    expectedBest = buildDensityConfig(ResTable_config::DENSITY_XXHIGH);
66    configs.add(expectedBest);
67    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
68
69    expectedBest = buildDensityConfig(int(ResTable_config::DENSITY_XXHIGH) - 20);
70    configs.add(expectedBest);
71    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
72
73    configs.add(buildDensityConfig(int(ResTable_config::DENSITY_HIGH) + 20));
74    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
75
76    expectedBest = buildDensityConfig(ResTable_config::DENSITY_XHIGH);
77    configs.add(expectedBest);
78    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
79
80    expectedBest = buildDensityConfig(ResTable_config::DENSITY_ANY);
81    expectedBest.sdkVersion = 21;
82    configs.add(expectedBest);
83    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
84}
85
86TEST(ConfigTest, shouldSelectBestDensityWhenNoneSpecified) {
87    ResTable_config deviceConfig;
88    memset(&deviceConfig, 0, sizeof(deviceConfig));
89    deviceConfig.sdkVersion = 21;
90
91    Vector<ResTable_config> configs;
92    configs.add(buildDensityConfig(ResTable_config::DENSITY_HIGH));
93
94    ResTable_config expectedBest = buildDensityConfig(ResTable_config::DENSITY_MEDIUM);
95    configs.add(expectedBest);
96    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
97
98    expectedBest = buildDensityConfig(ResTable_config::DENSITY_ANY);
99    configs.add(expectedBest);
100    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
101}
102
103}  // namespace android.
104