1 /*
2 * Copyright 2020 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 <ftl/small_map.h>
18 #include <gtest/gtest.h>
19
20 #include <cctype>
21
22 namespace android::test {
23
24 using ftl::SmallMap;
25
26 // Keep in sync with example usage in header file.
TEST(SmallMap,Example)27 TEST(SmallMap, Example) {
28 ftl::SmallMap<int, std::string, 3> map;
29 EXPECT_TRUE(map.empty());
30 EXPECT_FALSE(map.dynamic());
31
32 map = ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
33 EXPECT_EQ(map.size(), 3u);
34 EXPECT_FALSE(map.dynamic());
35
36 EXPECT_TRUE(map.contains(123));
37
38 EXPECT_EQ(map.find(42, [](const std::string& s) { return s.size(); }), 3u);
39
40 const auto opt = map.find(-1);
41 ASSERT_TRUE(opt);
42
43 std::string& ref = *opt;
44 EXPECT_TRUE(ref.empty());
45 ref = "xyz";
46
47 EXPECT_EQ(map, SmallMap(ftl::init::map(-1, "xyz")(42, "???")(123, "abc")));
48 }
49
TEST(SmallMap,Construct)50 TEST(SmallMap, Construct) {
51 {
52 // Default constructor.
53 SmallMap<int, std::string, 2> map;
54
55 EXPECT_TRUE(map.empty());
56 EXPECT_FALSE(map.dynamic());
57 }
58 {
59 // In-place constructor with same types.
60 SmallMap<int, std::string, 5> map =
61 ftl::init::map<int, std::string>(123, "abc")(456, "def")(789, "ghi");
62
63 EXPECT_EQ(map.size(), 3u);
64 EXPECT_EQ(map.max_size(), 5u);
65 EXPECT_FALSE(map.dynamic());
66
67 EXPECT_EQ(map, SmallMap(ftl::init::map(123, "abc")(456, "def")(789, "ghi")));
68 }
69 {
70 // In-place constructor with different types.
71 SmallMap<int, std::string, 5> map =
72 ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
73
74 EXPECT_EQ(map.size(), 3u);
75 EXPECT_EQ(map.max_size(), 5u);
76 EXPECT_FALSE(map.dynamic());
77
78 EXPECT_EQ(map, SmallMap(ftl::init::map(42, "???")(123, "abc")(-1, "\0\0\0")));
79 }
80 {
81 // In-place constructor with implicit size.
82 SmallMap map = ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
83
84 static_assert(std::is_same_v<decltype(map), SmallMap<int, std::string, 3>>);
85 EXPECT_EQ(map.size(), 3u);
86 EXPECT_EQ(map.max_size(), 3u);
87 EXPECT_FALSE(map.dynamic());
88
89 EXPECT_EQ(map, SmallMap(ftl::init::map(-1, "\0\0\0")(42, "???")(123, "abc")));
90 }
91 }
92
TEST(SmallMap,Find)93 TEST(SmallMap, Find) {
94 {
95 // Constant reference.
96 const ftl::SmallMap map = ftl::init::map('a', 'A')('b', 'B')('c', 'C');
97
98 const auto opt = map.find('b');
99 EXPECT_EQ(opt, 'B');
100
101 const char d = 'D';
102 const auto ref = map.find('d').value_or(std::cref(d));
103 EXPECT_EQ(ref.get(), 'D');
104 }
105 {
106 // Mutable reference.
107 ftl::SmallMap map = ftl::init::map('a', 'A')('b', 'B')('c', 'C');
108
109 const auto opt = map.find('c');
110 EXPECT_EQ(opt, 'C');
111
112 char d = 'd';
113 const auto ref = map.find('d').value_or(std::ref(d));
114 ref.get() = 'D';
115 EXPECT_EQ(d, 'D');
116 }
117 {
118 // Constant unary operation.
119 const ftl::SmallMap map = ftl::init::map('a', 'x')('b', 'y')('c', 'z');
120 EXPECT_EQ(map.find('c', [](char c) { return std::toupper(c); }), 'Z');
121 }
122 {
123 // Mutable unary operation.
124 ftl::SmallMap map = ftl::init::map('a', 'x')('b', 'y')('c', 'z');
125 EXPECT_TRUE(map.find('c', [](char& c) { c = std::toupper(c); }));
126
127 EXPECT_EQ(map, SmallMap(ftl::init::map('c', 'Z')('b', 'y')('a', 'x')));
128 }
129 }
130
131 } // namespace android::test
132