af1315c28f
This part of the effort to make all test related pieces into the `test` directory. This helps is excluding test related pieces in a straight forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move the MPFR wrapper and testutils into the 'test' directory.
86 lines
3.5 KiB
C++
86 lines
3.5 KiB
C++
//===-- Unittests for strspn ----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/string/strspn.h"
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#include "test/UnitTest/Test.h"
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TEST(LlvmLibcStrSpnTest, EmptyStringShouldReturnZeroLengthSpan) {
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// The search should not include the null terminator.
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EXPECT_EQ(__llvm_libc::strspn("", ""), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn("_", ""), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn("", "_"), size_t{0});
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}
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TEST(LlvmLibcStrSpnTest, ShouldNotSpanAnythingAfterNullTerminator) {
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const char src[4] = {'a', 'b', '\0', 'c'};
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EXPECT_EQ(__llvm_libc::strspn(src, "ab"), size_t{2});
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EXPECT_EQ(__llvm_libc::strspn(src, "c"), size_t{0});
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// Same goes for the segment to be searched for.
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const char segment[4] = {'1', '2', '\0', '3'};
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EXPECT_EQ(__llvm_libc::strspn("123", segment), size_t{2});
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}
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TEST(LlvmLibcStrSpnTest, SpanEachIndividualCharacter) {
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const char *src = "12345";
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EXPECT_EQ(__llvm_libc::strspn(src, "1"), size_t{1});
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// Since '1' is not within the segment, the span
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// size should remain zero.
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EXPECT_EQ(__llvm_libc::strspn(src, "2"), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn(src, "3"), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn(src, "4"), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn(src, "5"), size_t{0});
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}
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TEST(LlvmLibcStrSpnTest, UnmatchedCharacterShouldNotBeCountedInSpan) {
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EXPECT_EQ(__llvm_libc::strspn("a", "b"), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn("abcdef", "1"), size_t{0});
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EXPECT_EQ(__llvm_libc::strspn("123", "4"), size_t{0});
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}
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TEST(LlvmLibcStrSpnTest, SequentialCharactersShouldSpan) {
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const char *src = "abcde";
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EXPECT_EQ(__llvm_libc::strspn(src, "a"), size_t{1});
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EXPECT_EQ(__llvm_libc::strspn(src, "ab"), size_t{2});
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EXPECT_EQ(__llvm_libc::strspn(src, "abc"), size_t{3});
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EXPECT_EQ(__llvm_libc::strspn(src, "abcd"), size_t{4});
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EXPECT_EQ(__llvm_libc::strspn(src, "abcde"), size_t{5});
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// Same thing for when the roles are reversed.
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EXPECT_EQ(__llvm_libc::strspn("abcde", src), size_t{5});
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EXPECT_EQ(__llvm_libc::strspn("abcd", src), size_t{4});
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EXPECT_EQ(__llvm_libc::strspn("abc", src), size_t{3});
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EXPECT_EQ(__llvm_libc::strspn("ab", src), size_t{2});
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EXPECT_EQ(__llvm_libc::strspn("a", src), size_t{1});
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}
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TEST(LlvmLibcStrSpnTest, NonSequentialCharactersShouldNotSpan) {
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const char *src = "123456789";
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EXPECT_EQ(__llvm_libc::strspn(src, "_1_abc_2_def_3_"), size_t{3});
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// Only spans 4 since '5' is not within the span.
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EXPECT_EQ(__llvm_libc::strspn(src, "67__34abc12"), size_t{4});
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}
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TEST(LlvmLibcStrSpnTest, ReverseCharacters) {
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// Since these are still sequential, this should span.
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EXPECT_EQ(__llvm_libc::strspn("12345", "54321"), size_t{5});
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// Does not span any since '1' is not within the span.
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EXPECT_EQ(__llvm_libc::strspn("12345", "432"), size_t{0});
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// Only spans 1 since '2' is not within the span.
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EXPECT_EQ(__llvm_libc::strspn("12345", "51"), size_t{1});
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}
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TEST(LlvmLibcStrSpnTest, DuplicatedCharactersToBeSearchedForShouldStillMatch) {
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// Only a single character, so only spans 1.
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EXPECT_EQ(__llvm_libc::strspn("a", "aa"), size_t{1});
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// This should count once for each 'a' in the source string.
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EXPECT_EQ(__llvm_libc::strspn("aa", "aa"), size_t{2});
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EXPECT_EQ(__llvm_libc::strspn("aaa", "aa"), size_t{3});
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EXPECT_EQ(__llvm_libc::strspn("aaaa", "aa"), size_t{4});
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}
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