diff options
Diffstat (limited to 'test/std/utilities/function.objects/unord.hash')
5 files changed, 260 insertions, 0 deletions
diff --git a/test/std/utilities/function.objects/unord.hash/enum.fail.cpp b/test/std/utilities/function.objects/unord.hash/enum.fail.cpp new file mode 100644 index 0000000000000..9e44bfb778176 --- /dev/null +++ b/test/std/utilities/function.objects/unord.hash/enum.fail.cpp @@ -0,0 +1,24 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// Hashing a struct w/o a defined hash should fail. + +#include <functional> +#include <cassert> +#include <type_traits> + +struct X {}; + +int main() +{ + X x; + size_t h = std::hash<X>{} ( x ); +} diff --git a/test/std/utilities/function.objects/unord.hash/enum.pass.cpp b/test/std/utilities/function.objects/unord.hash/enum.pass.cpp new file mode 100644 index 0000000000000..bd92a4ac4d2e1 --- /dev/null +++ b/test/std/utilities/function.objects/unord.hash/enum.pass.cpp @@ -0,0 +1,62 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// make sure that we can hash enumeration values +// Not very portable + +#if __cplusplus >= 201402L + +#include <functional> +#include <cassert> +#include <type_traits> +#include <limits> + +enum class Colors { red, orange, yellow, green, blue, indigo, violet }; +enum class Cardinals { zero, one, two, three, five=5 }; +enum class LongColors : short { red, orange, yellow, green, blue, indigo, violet }; +enum class ShortColors : long { red, orange, yellow, green, blue, indigo, violet }; +enum class EightBitColors : uint8_t { red, orange, yellow, green, blue, indigo, violet }; + +enum Fruits { apple, pear, grape, mango, cantaloupe }; + +template <class T> +void +test() +{ + typedef std::hash<T> H; + static_assert((std::is_same<typename H::argument_type, T>::value), "" ); + static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); + typedef typename std::underlying_type<T>::type under_type; + + H h1; + std::hash<under_type> h2; + for (int i = 0; i <= 5; ++i) + { + T t(static_cast<T> (i)); + if (sizeof(T) <= sizeof(std::size_t)) + assert(h1(t) == h2(static_cast<under_type>(i))); + } +} + +int main() +{ + test<Cardinals>(); + + test<Colors>(); + test<ShortColors>(); + test<LongColors>(); + test<EightBitColors>(); + + test<Fruits>(); +} +#else +int main () {} +#endif diff --git a/test/std/utilities/function.objects/unord.hash/floating.pass.cpp b/test/std/utilities/function.objects/unord.hash/floating.pass.cpp new file mode 100644 index 0000000000000..f1f198f235996 --- /dev/null +++ b/test/std/utilities/function.objects/unord.hash/floating.pass.cpp @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// template <class T> +// struct hash +// : public unary_function<T, size_t> +// { +// size_t operator()(T val) const; +// }; + +// Not very portable + +#include <functional> +#include <cassert> +#include <type_traits> +#include <limits> +#include <cmath> + +template <class T> +void +test() +{ + typedef std::hash<T> H; + static_assert((std::is_same<typename H::argument_type, T>::value), "" ); + static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); + H h; + + std::size_t t0 = h(0.); + std::size_t tn0 = h(-0.); + std::size_t tp1 = h(0.1); + std::size_t t1 = h(1); + std::size_t tn1 = h(-1); + std::size_t pinf = h(INFINITY); + std::size_t ninf = h(-INFINITY); + assert(t0 == tn0); + assert(t0 != tp1); + assert(t0 != t1); + assert(t0 != tn1); + assert(t0 != pinf); + assert(t0 != ninf); + + assert(tp1 != t1); + assert(tp1 != tn1); + assert(tp1 != pinf); + assert(tp1 != ninf); + + assert(t1 != tn1); + assert(t1 != pinf); + assert(t1 != ninf); + + assert(tn1 != pinf); + assert(tn1 != ninf); + + assert(pinf != ninf); +} + +int main() +{ + test<float>(); + test<double>(); + test<long double>(); +} diff --git a/test/std/utilities/function.objects/unord.hash/integral.pass.cpp b/test/std/utilities/function.objects/unord.hash/integral.pass.cpp new file mode 100644 index 0000000000000..7cd9f15e93d11 --- /dev/null +++ b/test/std/utilities/function.objects/unord.hash/integral.pass.cpp @@ -0,0 +1,60 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// template <class T> +// struct hash +// : public unary_function<T, size_t> +// { +// size_t operator()(T val) const; +// }; + +// Not very portable + +#include <functional> +#include <cassert> +#include <type_traits> +#include <limits> + +template <class T> +void +test() +{ + typedef std::hash<T> H; + static_assert((std::is_same<typename H::argument_type, T>::value), "" ); + static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); + H h; + + for (int i = 0; i <= 5; ++i) + { + T t(i); + if (sizeof(T) <= sizeof(std::size_t)) + assert(h(t) == t); + } +} + +int main() +{ + test<bool>(); + test<char>(); + test<signed char>(); + test<unsigned char>(); + test<char16_t>(); + test<char32_t>(); + test<wchar_t>(); + test<short>(); + test<unsigned short>(); + test<int>(); + test<unsigned int>(); + test<long>(); + test<unsigned long>(); + test<long long>(); + test<unsigned long long>(); +} diff --git a/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp b/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp new file mode 100644 index 0000000000000..a48394495e2d5 --- /dev/null +++ b/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp @@ -0,0 +1,44 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// template <class T> +// struct hash +// : public unary_function<T, size_t> +// { +// size_t operator()(T val) const; +// }; + +// Not very portable + +#include <functional> +#include <cassert> +#include <type_traits> +#include <limits> + +template <class T> +void +test() +{ + typedef std::hash<T> H; + static_assert((std::is_same<typename H::argument_type, T>::value), "" ); + static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); + H h; + + typedef typename std::remove_pointer<T>::type type; + type i; + type j; + assert(h(&i) != h(&j)); +} + +int main() +{ + test<int*>(); +} |