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 "Grouper.h"
18
19#include "SplitDescription.h"
20
21#include <gtest/gtest.h>
22#include <utils/String8.h>
23#include <utils/Vector.h>
24
25using namespace android;
26
27namespace split {
28
29class GrouperTest : public ::testing::Test {
30protected:
31    virtual void SetUp() {
32        Vector<SplitDescription> splits;
33        addSplit(splits, "en-rUS-sw600dp-hdpi");
34        addSplit(splits, "fr-rFR-sw600dp-hdpi");
35        addSplit(splits, "fr-rFR-sw600dp-xhdpi");
36        addSplit(splits, ":armeabi");
37        addSplit(splits, "en-rUS-sw300dp-xhdpi");
38        addSplit(splits, "large");
39        addSplit(splits, "pl-rPL");
40        addSplit(splits, "xlarge");
41        addSplit(splits, "en-rUS-sw600dp-xhdpi");
42        addSplit(splits, "en-rUS-sw300dp-hdpi");
43        addSplit(splits, "xxhdpi");
44        addSplit(splits, "hdpi");
45        addSplit(splits, "de-rDE");
46        addSplit(splits, "xhdpi");
47        addSplit(splits, ":x86");
48        addSplit(splits, "anydpi");
49        addSplit(splits, "v7");
50        addSplit(splits, "v8");
51        addSplit(splits, "sw600dp");
52        addSplit(splits, "sw300dp");
53        mGroups = groupByMutualExclusivity(splits);
54    }
55
56    void addSplit(Vector<SplitDescription>& splits, const char* str);
57    void expectHasGroupWithSplits(const char* a);
58    void expectHasGroupWithSplits(const char* a, const char* b);
59    void expectHasGroupWithSplits(const char* a, const char* b, const char* c);
60    void expectHasGroupWithSplits(const char* a, const char* b, const char* c, const char* d);
61    void expectHasGroupWithSplits(const Vector<const char*>& expectedStrs);
62
63    Vector<SortedVector<SplitDescription> > mGroups;
64};
65
66TEST_F(GrouperTest, shouldHaveCorrectNumberOfGroups) {
67    EXPECT_EQ(12u, mGroups.size());
68}
69
70TEST_F(GrouperTest, shouldGroupDensities) {
71    expectHasGroupWithSplits("en-rUS-sw300dp-hdpi", "en-rUS-sw300dp-xhdpi");
72    expectHasGroupWithSplits("en-rUS-sw600dp-hdpi", "en-rUS-sw600dp-xhdpi");
73    expectHasGroupWithSplits("fr-rFR-sw600dp-hdpi", "fr-rFR-sw600dp-xhdpi");
74    expectHasGroupWithSplits("hdpi", "xhdpi", "xxhdpi", "anydpi");
75}
76
77TEST_F(GrouperTest, shouldGroupAbi) {
78    expectHasGroupWithSplits(":armeabi", ":x86");
79}
80
81TEST_F(GrouperTest, shouldGroupLocale) {
82    expectHasGroupWithSplits("pl-rPL", "de-rDE");
83}
84
85TEST_F(GrouperTest, shouldGroupEachSplitIntoItsOwnGroup) {
86    expectHasGroupWithSplits("large");
87    expectHasGroupWithSplits("xlarge");
88    expectHasGroupWithSplits("v7");
89    expectHasGroupWithSplits("v8");
90    expectHasGroupWithSplits("sw600dp");
91    expectHasGroupWithSplits("sw300dp");
92}
93
94//
95// Helper methods
96//
97
98void GrouperTest::expectHasGroupWithSplits(const char* a) {
99    Vector<const char*> expected;
100    expected.add(a);
101    expectHasGroupWithSplits(expected);
102}
103
104void GrouperTest::expectHasGroupWithSplits(const char* a, const char* b) {
105    Vector<const char*> expected;
106    expected.add(a);
107    expected.add(b);
108    expectHasGroupWithSplits(expected);
109}
110
111void GrouperTest::expectHasGroupWithSplits(const char* a, const char* b, const char* c) {
112    Vector<const char*> expected;
113    expected.add(a);
114    expected.add(b);
115    expected.add(c);
116    expectHasGroupWithSplits(expected);
117}
118
119void GrouperTest::expectHasGroupWithSplits(const char* a, const char* b, const char* c, const char* d) {
120    Vector<const char*> expected;
121    expected.add(a);
122    expected.add(b);
123    expected.add(c);
124    expected.add(d);
125    expectHasGroupWithSplits(expected);
126}
127
128void GrouperTest::expectHasGroupWithSplits(const Vector<const char*>& expectedStrs) {
129    Vector<SplitDescription> splits;
130    const size_t expectedStrCount = expectedStrs.size();
131    for (size_t i = 0; i < expectedStrCount; i++) {
132        splits.add();
133        if (!SplitDescription::parse(String8(expectedStrs[i]), &splits.editTop())) {
134            ADD_FAILURE() << "Failed to parse SplitDescription " << expectedStrs[i];
135            return;
136        }
137    }
138    const size_t splitCount = splits.size();
139
140    const size_t groupCount = mGroups.size();
141    for (size_t i = 0; i < groupCount; i++) {
142        const SortedVector<SplitDescription>& group = mGroups[i];
143        if (group.size() != splitCount) {
144            continue;
145        }
146
147        size_t found = 0;
148        for (size_t j = 0; j < splitCount; j++) {
149            if (group.indexOf(splits[j]) >= 0) {
150                found++;
151            }
152        }
153
154        if (found == splitCount) {
155            return;
156        }
157    }
158
159    String8 errorMessage("Failed to find expected group [");
160    for (size_t i = 0; i < splitCount; i++) {
161        if (i != 0) {
162            errorMessage.append(", ");
163        }
164        errorMessage.append(splits[i].toString());
165    }
166    errorMessage.append("].\nActual:\n");
167
168    for (size_t i = 0; i < groupCount; i++) {
169        errorMessage.appendFormat("Group %d:\n", int(i + 1));
170        const SortedVector<SplitDescription>& group = mGroups[i];
171        for (size_t j = 0; j < group.size(); j++) {
172            errorMessage.append("  ");
173            errorMessage.append(group[j].toString());
174            errorMessage.append("\n");
175        }
176    }
177    ADD_FAILURE() << errorMessage.string();
178}
179
180void GrouperTest::addSplit(Vector<SplitDescription>& splits, const char* str) {
181    splits.add();
182    EXPECT_TRUE(SplitDescription::parse(String8(str), &splits.editTop()));
183}
184
185} // namespace split
186