1 //===----------------------------------------------------------------------===//
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-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03
10
11 // <filesystem>
12
13 // class path
14
15 // int compare(path const&) const noexcept;
16 // int compare(string_type const&) const;
17 // int compare(value_type const*) const;
18 //
19 // bool operator==(path const&, path const&) noexcept;
20 // bool operator!=(path const&, path const&) noexcept;
21 // bool operator< (path const&, path const&) noexcept;
22 // bool operator<=(path const&, path const&) noexcept;
23 // bool operator> (path const&, path const&) noexcept;
24 // bool operator>=(path const&, path const&) noexcept;
25 //
26 // size_t hash_value(path const&) noexcept;
27
28
29 #include "filesystem_include.h"
30 #include <type_traits>
31 #include <vector>
32 #include <cassert>
33
34 #include "test_macros.h"
35 #include "test_iterators.h"
36 #include "count_new.h"
37 #include "filesystem_test_helper.h"
38
39 struct PathCompareTest {
40 const char* LHS;
41 const char* RHS;
42 int expect;
43 };
44
45 #define LONGA "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
46 #define LONGB "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"
47 #define LONGC "CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"
48 #define LONGD "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"
49 const PathCompareTest CompareTestCases[] =
50 {
51 {"", "", 0},
52 {"a", "", 1},
53 {"", "a", -1},
54 {"a/b/c", "a/b/c", 0},
55 {"b/a/c", "a/b/c", 1},
56 {"a/b/c", "b/a/c", -1},
57 {"a/b", "a/b/c", -1},
58 {"a/b/c", "a/b", 1},
59 {"a/b/", "a/b/.", -1},
60 {"a/b/", "a/b", 1},
61 {"a/b//////", "a/b/////.", -1},
62 {"a/.././b", "a///..//.////b", 0},
63 {"//foo//bar///baz////", "//foo/bar/baz/", 0}, // duplicate separators
64 {"///foo/bar", "/foo/bar", 0}, // "///" is not a root directory
65 {"/foo/bar/", "/foo/bar", 1}, // trailing separator
66 {"foo", "/foo", -1}, // if !this->has_root_directory() and p.has_root_directory(), a value less than 0.
67 {"/foo", "foo", 1}, // if this->has_root_directory() and !p.has_root_directory(), a value greater than 0.
68 {("//" LONGA "////" LONGB "/" LONGC "///" LONGD), ("//" LONGA "/" LONGB "/" LONGC "/" LONGD), 0},
69 {(LONGA "/" LONGB "/" LONGC), (LONGA "/" LONGB "/" LONGB), 1}
70
71 };
72 #undef LONGA
73 #undef LONGB
74 #undef LONGC
75 #undef LONGD
76
normalize_ret(int ret)77 static inline int normalize_ret(int ret)
78 {
79 return ret < 0 ? -1 : (ret > 0 ? 1 : 0);
80 }
81
test_compare_basic()82 void test_compare_basic()
83 {
84 using namespace fs;
85 for (auto const & TC : CompareTestCases) {
86 const path p1(TC.LHS);
87 const path p2(TC.RHS);
88 const std::string R(TC.RHS);
89 const std::string_view RV(TC.RHS);
90 const int E = TC.expect;
91 { // compare(...) functions
92 DisableAllocationGuard g; // none of these operations should allocate
93
94 // check runtime results
95 int ret1 = normalize_ret(p1.compare(p2));
96 int ret2 = normalize_ret(p1.compare(R));
97 int ret3 = normalize_ret(p1.compare(TC.RHS));
98 int ret4 = normalize_ret(p1.compare(RV));
99
100 g.release();
101 assert(ret1 == ret2);
102 assert(ret1 == ret3);
103 assert(ret1 == ret4);
104 assert(ret1 == E);
105
106 // check signatures
107 ASSERT_NOEXCEPT(p1.compare(p2));
108 }
109 { // comparison operators
110 DisableAllocationGuard g; // none of these operations should allocate
111
112 // Check runtime result
113 assert((p1 == p2) == (E == 0));
114 assert((p1 != p2) == (E != 0));
115 assert((p1 < p2) == (E < 0));
116 assert((p1 <= p2) == (E <= 0));
117 assert((p1 > p2) == (E > 0));
118 assert((p1 >= p2) == (E >= 0));
119
120 // Check signatures
121 ASSERT_NOEXCEPT(p1 == p2);
122 ASSERT_NOEXCEPT(p1 != p2);
123 ASSERT_NOEXCEPT(p1 < p2);
124 ASSERT_NOEXCEPT(p1 <= p2);
125 ASSERT_NOEXCEPT(p1 > p2);
126 ASSERT_NOEXCEPT(p1 >= p2);
127 }
128 { // check hash values
129 auto h1 = hash_value(p1);
130 auto h2 = hash_value(p2);
131 assert((h1 == h2) == (p1 == p2));
132 // check signature
133 ASSERT_SAME_TYPE(size_t, decltype(hash_value(p1)));
134 ASSERT_NOEXCEPT(hash_value(p1));
135 }
136 }
137 }
138
CompareElements(std::vector<std::string> const & LHS,std::vector<std::string> const & RHS)139 int CompareElements(std::vector<std::string> const& LHS, std::vector<std::string> const& RHS) {
140 bool IsLess = std::lexicographical_compare(LHS.begin(), LHS.end(), RHS.begin(), RHS.end());
141 if (IsLess)
142 return -1;
143
144 bool IsGreater = std::lexicographical_compare(RHS.begin(), RHS.end(), LHS.begin(), LHS.end());
145 if (IsGreater)
146 return 1;
147
148 return 0;
149 }
150
test_compare_elements()151 void test_compare_elements() {
152 struct {
153 std::vector<std::string> LHSElements;
154 std::vector<std::string> RHSElements;
155 int Expect;
156 } TestCases[] = {
157 {{"a"}, {"a"}, 0},
158 {{"a"}, {"b"}, -1},
159 {{"b"}, {"a"}, 1},
160 {{"a", "b", "c"}, {"a", "b", "c"}, 0},
161 {{"a", "b", "c"}, {"a", "b", "d"}, -1},
162 {{"a", "b", "d"}, {"a", "b", "c"}, 1},
163 {{"a", "b"}, {"a", "b", "c"}, -1},
164 {{"a", "b", "c"}, {"a", "b"}, 1},
165
166 };
167
168 auto BuildPath = [](std::vector<std::string> const& Elems) {
169 fs::path p;
170 for (auto &E : Elems)
171 p /= E;
172 return p;
173 };
174
175 for (auto &TC : TestCases) {
176 fs::path LHS = BuildPath(TC.LHSElements);
177 fs::path RHS = BuildPath(TC.RHSElements);
178 const int ExpectCmp = CompareElements(TC.LHSElements, TC.RHSElements);
179 assert(ExpectCmp == TC.Expect);
180 const int GotCmp = normalize_ret(LHS.compare(RHS));
181 assert(GotCmp == TC.Expect);
182 }
183 }
184
main(int,char **)185 int main(int, char**) {
186 test_compare_basic();
187 test_compare_elements();
188
189 return 0;
190 }
191