1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03 11 12 // <experimental/filesystem> 13 14 // class directory_entry 15 16 // bool operator==(directory_entry const&) const noexcept; 17 // bool operator!=(directory_entry const&) const noexcept; 18 // bool operator< (directory_entry const&) const noexcept; 19 // bool operator<=(directory_entry const&) const noexcept; 20 // bool operator> (directory_entry const&) const noexcept; 21 // bool operator>=(directory_entry const&) const noexcept; 22 23 24 #include <experimental/filesystem> 25 #include <type_traits> 26 #include <cassert> 27 28 namespace fs = std::experimental::filesystem; 29 30 #define CHECK_OP(Op) \ 31 static_assert(std::is_same<decltype(ce. operator Op (ce)), bool>::value, ""); \ 32 static_assert(noexcept(ce.operator Op (ce)), "Operation must be noexcept" ) 33 34 void test_comparison_signatures() { 35 using namespace fs; 36 path const p("foo/bar/baz"); 37 // Check that the operators are member functions with the correct signatures. 38 { 39 directory_entry const ce(p); 40 CHECK_OP(==); 41 CHECK_OP(!=); 42 CHECK_OP(< ); 43 CHECK_OP(<=); 44 CHECK_OP(> ); 45 CHECK_OP(>=); 46 } 47 } 48 #undef CHECK_OP 49 50 // The actual semantics of the comparisons are testing via paths operators. 51 void test_comparisons_simple() { 52 using namespace fs; 53 typedef std::pair<path, path> TestType; 54 TestType TestCases[] = 55 { 56 {"", ""}, 57 {"", "a"}, 58 {"a", "a"}, 59 {"a", "b"}, 60 {"foo/bar/baz", "foo/bar/baz/"} 61 }; 62 auto TestFn = [](path const& LHS, const directory_entry& LHSE, 63 path const& RHS, const directory_entry& RHSE) { 64 assert((LHS == RHS) == (LHSE == RHSE)); 65 assert((LHS != RHS) == (LHSE != RHSE)); 66 assert((LHS < RHS) == (LHSE < RHSE)); 67 assert((LHS <= RHS) == (LHSE <= RHSE)); 68 assert((LHS > RHS) == (LHSE > RHSE)); 69 assert((LHS >= RHS) == (LHSE >= RHSE)); 70 }; 71 for (auto const& TC : TestCases) { 72 const directory_entry L(TC.first); 73 const directory_entry R(TC.second); 74 TestFn(TC.first, L, TC.second, R); 75 TestFn(TC.second, R, TC.first, L); 76 } 77 } 78 79 int main() { 80 test_comparison_signatures(); 81 test_comparisons_simple(); 82 } 83
