286 lines · cpp
1//===-- Unittests for string_view -----------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/CPP/string_view.h"10#include "test/UnitTest/Test.h"11 12using LIBC_NAMESPACE::cpp::string_view;13 14TEST(LlvmLibcStringViewTest, InitializeCheck) {15 string_view v;16 ASSERT_EQ(v.size(), size_t(0));17 ASSERT_TRUE(v.data() == nullptr);18 19 v = string_view("");20 ASSERT_EQ(v.size(), size_t(0));21 ASSERT_TRUE(v.data() != nullptr);22 23 v = string_view("abc", 0);24 ASSERT_EQ(v.size(), size_t(0));25 ASSERT_TRUE(v.data() != nullptr);26 27 v = string_view("123456789");28 ASSERT_EQ(v.size(), size_t(9));29}30 31TEST(LlvmLibcStringViewTest, Equals) {32 string_view v("abc");33 ASSERT_EQ(v, string_view("abc"));34 ASSERT_NE(v, string_view());35 ASSERT_NE(v, string_view(""));36 ASSERT_NE(v, string_view("123"));37 ASSERT_NE(v, string_view("abd"));38 ASSERT_NE(v, string_view("aaa"));39 ASSERT_NE(v, string_view("abcde"));40}41 42TEST(LlvmLibcStringViewTest, startsWith) {43 string_view v("abc");44 ASSERT_TRUE(v.starts_with('a'));45 ASSERT_TRUE(v.starts_with(string_view("a")));46 ASSERT_TRUE(v.starts_with(string_view("ab")));47 ASSERT_TRUE(v.starts_with(string_view("abc")));48 ASSERT_TRUE(v.starts_with(string_view()));49 ASSERT_TRUE(v.starts_with(string_view("")));50 ASSERT_FALSE(v.starts_with('1'));51 ASSERT_FALSE(v.starts_with(string_view("123")));52 ASSERT_FALSE(v.starts_with(string_view("abd")));53 ASSERT_FALSE(v.starts_with(string_view("aaa")));54 ASSERT_FALSE(v.starts_with(string_view("abcde")));55}56 57TEST(LlvmLibcStringViewTest, endsWith) {58 string_view v("abc");59 ASSERT_TRUE(v.ends_with('c'));60 ASSERT_TRUE(v.ends_with(string_view("c")));61 ASSERT_TRUE(v.ends_with(string_view("bc")));62 ASSERT_TRUE(v.ends_with(string_view("abc")));63 ASSERT_TRUE(v.ends_with(string_view()));64 ASSERT_TRUE(v.ends_with(string_view("")));65 ASSERT_FALSE(v.ends_with('1'));66 ASSERT_FALSE(v.ends_with(string_view("123")));67 ASSERT_FALSE(v.ends_with(string_view("abd")));68 ASSERT_FALSE(v.ends_with(string_view("aaa")));69 ASSERT_FALSE(v.ends_with(string_view("abcde")));70}71 72TEST(LlvmLibcStringViewTest, RemovePrefix) {73 string_view a("123456789");74 a.remove_prefix(0);75 ASSERT_EQ(a.size(), size_t(9));76 ASSERT_TRUE(a == "123456789");77 78 string_view b("123456789");79 b.remove_prefix(4);80 ASSERT_EQ(b.size(), size_t(5));81 ASSERT_TRUE(b == "56789");82 83 string_view c("123456789");84 c.remove_prefix(9);85 ASSERT_EQ(c.size(), size_t(0));86}87 88TEST(LlvmLibcStringViewTest, RemoveSuffix) {89 string_view a("123456789");90 a.remove_suffix(0);91 ASSERT_EQ(a.size(), size_t(9));92 ASSERT_TRUE(a == "123456789");93 94 string_view b("123456789");95 b.remove_suffix(4);96 ASSERT_EQ(b.size(), size_t(5));97 ASSERT_TRUE(b == "12345");98 99 string_view c("123456789");100 c.remove_suffix(9);101 ASSERT_EQ(c.size(), size_t(0));102}103 104TEST(LlvmLibcStringViewTest, Observer) {105 string_view ABC("abc");106 ASSERT_EQ(ABC.size(), size_t(3));107 ASSERT_FALSE(ABC.empty());108 ASSERT_EQ(ABC.front(), 'a');109 ASSERT_EQ(ABC.back(), 'c');110}111 112TEST(LlvmLibcStringViewTest, FindFirstOf) {113 string_view Tmp("abca");114 ASSERT_TRUE(Tmp.find_first_of('a') == 0);115 ASSERT_TRUE(Tmp.find_first_of('d') == string_view::npos);116 ASSERT_TRUE(Tmp.find_first_of('b') == 1);117 ASSERT_TRUE(Tmp.find_first_of('a', 0) == 0);118 ASSERT_TRUE(Tmp.find_first_of('b', 1) == 1);119 ASSERT_TRUE(Tmp.find_first_of('a', 1) == 3);120 ASSERT_TRUE(Tmp.find_first_of('a', 42) == string_view::npos);121 ASSERT_FALSE(Tmp.find_first_of('c') == 1);122 ASSERT_FALSE(Tmp.find_first_of('c', 0) == 1);123 ASSERT_FALSE(Tmp.find_first_of('c', 1) == 1);124}125 126TEST(LlvmLibcStringViewTest, FindLastOf) {127 string_view Tmp("abada");128 129 ASSERT_EQ(Tmp.find_last_of('a'), size_t(4));130 ASSERT_EQ(Tmp.find_last_of('a', 123), size_t(4));131 ASSERT_EQ(Tmp.find_last_of('a', 5), size_t(4));132 ASSERT_EQ(Tmp.find_last_of('a', 4), size_t(4));133 ASSERT_EQ(Tmp.find_last_of('a', 3), size_t(2));134 ASSERT_EQ(Tmp.find_last_of('a', 2), size_t(2));135 ASSERT_EQ(Tmp.find_last_of('a', 1), size_t(0));136 ASSERT_EQ(Tmp.find_last_of('a', 0), size_t(0));137 138 ASSERT_EQ(Tmp.find_last_of('b'), size_t(1));139 ASSERT_EQ(Tmp.find_last_of('b', 123), size_t(1));140 ASSERT_EQ(Tmp.find_last_of('b', 5), size_t(1));141 ASSERT_EQ(Tmp.find_last_of('b', 4), size_t(1));142 ASSERT_EQ(Tmp.find_last_of('b', 3), size_t(1));143 ASSERT_EQ(Tmp.find_last_of('b', 2), size_t(1));144 ASSERT_EQ(Tmp.find_last_of('b', 1), size_t(1));145 ASSERT_EQ(Tmp.find_last_of('b', 0), string_view::npos);146 147 ASSERT_EQ(Tmp.find_last_of('d'), size_t(3));148 ASSERT_EQ(Tmp.find_last_of('d', 123), size_t(3));149 ASSERT_EQ(Tmp.find_last_of('d', 5), size_t(3));150 ASSERT_EQ(Tmp.find_last_of('d', 4), size_t(3));151 ASSERT_EQ(Tmp.find_last_of('d', 3), size_t(3));152 ASSERT_EQ(Tmp.find_last_of('d', 2), string_view::npos);153 ASSERT_EQ(Tmp.find_last_of('d', 1), string_view::npos);154 ASSERT_EQ(Tmp.find_last_of('d', 0), string_view::npos);155 156 ASSERT_EQ(Tmp.find_last_of('e'), string_view::npos);157 ASSERT_EQ(Tmp.find_last_of('e', 123), string_view::npos);158 ASSERT_EQ(Tmp.find_last_of('e', 5), string_view::npos);159 ASSERT_EQ(Tmp.find_last_of('e', 4), string_view::npos);160 ASSERT_EQ(Tmp.find_last_of('e', 3), string_view::npos);161 ASSERT_EQ(Tmp.find_last_of('e', 2), string_view::npos);162 ASSERT_EQ(Tmp.find_last_of('e', 1), string_view::npos);163 ASSERT_EQ(Tmp.find_last_of('e', 0), string_view::npos);164 165 string_view Empty;166 ASSERT_EQ(Empty.find_last_of('a'), string_view::npos);167 ASSERT_EQ(Empty.find_last_of('a', 0), string_view::npos);168 ASSERT_EQ(Empty.find_last_of('a', 123), string_view::npos);169 170 string_view Empty1("");171 ASSERT_EQ(Empty1.find_last_of('a'), string_view::npos);172 ASSERT_EQ(Empty1.find_last_of('a', 0), string_view::npos);173 ASSERT_EQ(Empty1.find_last_of('a', 123), string_view::npos);174}175 176TEST(LlvmLibcStringViewTest, FindFirstNotOf) {177 string_view Tmp("abada");178 179 EXPECT_EQ(Tmp.find_first_not_of('a'), size_t(1));180 EXPECT_EQ(Tmp.find_first_not_of('a', 123), string_view::npos);181 EXPECT_EQ(Tmp.find_first_not_of('a', 5), string_view::npos);182 EXPECT_EQ(Tmp.find_first_not_of('a', 4), string_view::npos);183 EXPECT_EQ(Tmp.find_first_not_of('a', 3), size_t(3));184 EXPECT_EQ(Tmp.find_first_not_of('a', 2), size_t(3));185 EXPECT_EQ(Tmp.find_first_not_of('a', 1), size_t(1));186 EXPECT_EQ(Tmp.find_first_not_of('a', 0), size_t(1));187 188 EXPECT_EQ(Tmp.find_first_not_of('b'), size_t(0));189 EXPECT_EQ(Tmp.find_first_not_of('b', 123), string_view::npos);190 EXPECT_EQ(Tmp.find_first_not_of('b', 5), string_view::npos);191 EXPECT_EQ(Tmp.find_first_not_of('b', 4), size_t(4));192 EXPECT_EQ(Tmp.find_first_not_of('b', 3), size_t(3));193 EXPECT_EQ(Tmp.find_first_not_of('b', 2), size_t(2));194 EXPECT_EQ(Tmp.find_first_not_of('b', 1), size_t(2));195 EXPECT_EQ(Tmp.find_first_not_of('b', 0), size_t(0));196 197 EXPECT_EQ(Tmp.find_first_not_of('d'), size_t(0));198 EXPECT_EQ(Tmp.find_first_not_of('d', 123), string_view::npos);199 EXPECT_EQ(Tmp.find_first_not_of('d', 5), string_view::npos);200 EXPECT_EQ(Tmp.find_first_not_of('d', 4), size_t(4));201 EXPECT_EQ(Tmp.find_first_not_of('d', 3), size_t(4));202 EXPECT_EQ(Tmp.find_first_not_of('d', 2), size_t(2));203 EXPECT_EQ(Tmp.find_first_not_of('d', 1), size_t(1));204 EXPECT_EQ(Tmp.find_first_not_of('d', 0), size_t(0));205 206 EXPECT_EQ(Tmp.find_first_not_of('e'), size_t(0));207 EXPECT_EQ(Tmp.find_first_not_of('e', 123), string_view::npos);208 EXPECT_EQ(Tmp.find_first_not_of('e', 5), string_view::npos);209 EXPECT_EQ(Tmp.find_first_not_of('e', 4), size_t(4));210 EXPECT_EQ(Tmp.find_first_not_of('e', 3), size_t(3));211 EXPECT_EQ(Tmp.find_first_not_of('e', 2), size_t(2));212 EXPECT_EQ(Tmp.find_first_not_of('e', 1), size_t(1));213 EXPECT_EQ(Tmp.find_first_not_of('e', 0), size_t(0));214 215 string_view Empty;216 EXPECT_EQ(Empty.find_first_not_of('a'), string_view::npos);217 EXPECT_EQ(Empty.find_first_not_of('a', 0), string_view::npos);218 EXPECT_EQ(Empty.find_first_not_of('a', 123), string_view::npos);219 220 string_view Empty1("");221 EXPECT_EQ(Empty1.find_first_not_of('a'), string_view::npos);222 EXPECT_EQ(Empty1.find_first_not_of('a', 0), string_view::npos);223 EXPECT_EQ(Empty1.find_first_not_of('a', 123), string_view::npos);224 225 string_view Full("aaaaaaa");226 EXPECT_EQ(Full.find_first_not_of('a'), string_view::npos);227 EXPECT_EQ(Full.find_first_not_of('a', 0), string_view::npos);228 EXPECT_EQ(Full.find_first_not_of('a', 123), string_view::npos);229 230 EXPECT_EQ(Full.find_first_not_of('b'), size_t(0));231 EXPECT_EQ(Full.find_first_not_of('b', 0), size_t(0));232 EXPECT_EQ(Full.find_first_not_of('b', 123), string_view::npos);233}234 235TEST(LlvmLibcStringViewTest, Contains) {236 string_view Empty;237 static_assert(238 'a' < 'z',239 "This test only supports character encodings where 'a' is below 'z'");240 for (char c = 'a'; c < 'z'; ++c)241 EXPECT_FALSE(Empty.contains(c));242 243 string_view Tmp("abada");244 EXPECT_TRUE(Tmp.contains('a'));245 EXPECT_TRUE(Tmp.contains('b'));246 EXPECT_FALSE(Tmp.contains('c'));247 EXPECT_TRUE(Tmp.contains('d'));248 EXPECT_FALSE(Tmp.contains('e'));249 250 EXPECT_TRUE(Tmp.substr(1).contains('a'));251 EXPECT_TRUE(Tmp.substr(1).contains('b'));252 EXPECT_FALSE(Tmp.substr(1).contains('c'));253 EXPECT_TRUE(Tmp.substr(1).contains('d'));254 EXPECT_FALSE(Tmp.substr(1).contains('e'));255 256 EXPECT_TRUE(Tmp.substr(2).contains('a'));257 EXPECT_FALSE(Tmp.substr(2).contains('b'));258 EXPECT_FALSE(Tmp.substr(2).contains('c'));259 EXPECT_TRUE(Tmp.substr(2).contains('d'));260 EXPECT_FALSE(Tmp.substr(2).contains('e'));261 262 EXPECT_TRUE(Tmp.substr(3).contains('a'));263 EXPECT_FALSE(Tmp.substr(3).contains('b'));264 EXPECT_FALSE(Tmp.substr(3).contains('c'));265 EXPECT_TRUE(Tmp.substr(3).contains('d'));266 EXPECT_FALSE(Tmp.substr(3).contains('e'));267 268 EXPECT_TRUE(Tmp.substr(4).contains('a'));269 EXPECT_FALSE(Tmp.substr(4).contains('b'));270 EXPECT_FALSE(Tmp.substr(4).contains('c'));271 EXPECT_FALSE(Tmp.substr(4).contains('d'));272 EXPECT_FALSE(Tmp.substr(4).contains('e'));273 274 EXPECT_FALSE(Tmp.substr(5).contains('a'));275 EXPECT_FALSE(Tmp.substr(5).contains('b'));276 EXPECT_FALSE(Tmp.substr(5).contains('c'));277 EXPECT_FALSE(Tmp.substr(5).contains('d'));278 EXPECT_FALSE(Tmp.substr(5).contains('e'));279 280 EXPECT_FALSE(Tmp.substr(6).contains('a'));281 EXPECT_FALSE(Tmp.substr(6).contains('b'));282 EXPECT_FALSE(Tmp.substr(6).contains('c'));283 EXPECT_FALSE(Tmp.substr(6).contains('d'));284 EXPECT_FALSE(Tmp.substr(6).contains('e'));285}286