HeterogeneousAccessTest.cpp File Reference

#include <folly/container/HeterogeneousAccess.h>
#include <set>
#include <vector>
#include <folly/FBString.h>
#include <folly/Portability.h>
#include <folly/Range.h>
#include <folly/Traits.h>
#include <folly/portability/GTest.h>
#include <folly/small_vector.h>

Go to the source code of this file.

Classes
struct	std::hash< StringVector >

Functions
	TEST (HeterogeneousAccess, transparentIsSelected)
	TEST (HeterogeneousAccess, transparentIsNotSelected)
template<typename L , typename R , typename S >
void	runTestMatches2 (S src)
template<typename S >
void	runTestMatches (S const &src)
Range< int const * >	foo (small_vector< int, 2 > const &sv)
	TEST (HeterogeneousAccess, transparentMatches)

Function Documentation

Range<int const*> foo

(

small_vector< int, 2 > const &

sv

)

Definition at line 206 of file HeterogeneousAccessTest.cpp.

                                                      {
  return sv;
}

template<typename S >

void runTestMatches

(

S const &

src

)

Definition at line 169 of file HeterogeneousAccessTest.cpp.

                                  {
  using SP = Range<typename S::value_type const*>;
  using MSP = Range<typename S::value_type*>;
#if FOLLY_HAS_STRING_VIEW
  using SV = std::basic_string_view<typename S::value_type>;
#else
  using SV = SP;
#endif
  using V = std::vector<typename S::value_type>;

  runTestMatches2<S, S>(src);
  runTestMatches2<S, SP>(src);
  runTestMatches2<S, MSP>(src);
  runTestMatches2<S, SV>(src);
  runTestMatches2<S, V>(src);
  runTestMatches2<SP, S>(src);
  runTestMatches2<SP, SP>(src);
  runTestMatches2<SP, MSP>(src);
  runTestMatches2<SP, SV>(src);
  runTestMatches2<SP, V>(src);
  runTestMatches2<MSP, S>(src);
  runTestMatches2<MSP, SP>(src);
  runTestMatches2<MSP, MSP>(src);
  runTestMatches2<MSP, SV>(src);
  runTestMatches2<MSP, V>(src);
  runTestMatches2<SV, S>(src);
  runTestMatches2<SV, SP>(src);
  runTestMatches2<SV, MSP>(src);
  runTestMatches2<SV, SV>(src);
  runTestMatches2<SV, V>(src);
  runTestMatches2<V, S>(src);
  runTestMatches2<V, SP>(src);
  runTestMatches2<V, MSP>(src);
  runTestMatches2<V, SV>(src);
  runTestMatches2<V, V>(src);
}

template<typename L , typename R , typename S >

void runTestMatches2

(

S

src

)

Definition at line 131 of file HeterogeneousAccessTest.cpp.

References a, EXPECT_EQ, EXPECT_FALSE, EXPECT_NE, and EXPECT_TRUE.

                            {
  S smaller{src};
  smaller.resize(smaller.size() - 1);

  using RangeType = Range<typename S::value_type*>;

  L lhs1{RangeType{&src[0], src.size()}};
  L lhs2{RangeType{&smaller[0], smaller.size()}};
  R rhs1{RangeType{&src[0], src.size()}};
  R rhs2{RangeType{&smaller[0], smaller.size()}};

  HeterogeneousAccessEqualTo<L> equalTo;
  HeterogeneousAccessHash<L> hash;

  EXPECT_TRUE(equalTo(lhs1, rhs1));
  EXPECT_FALSE(equalTo(lhs1, rhs2));
  EXPECT_FALSE(equalTo(lhs2, rhs1));
  EXPECT_TRUE(equalTo(lhs2, rhs2));

  EXPECT_EQ(hash(lhs1), hash(rhs1));
  EXPECT_NE(hash(lhs1), hash(rhs2)); // technically only low probability
  EXPECT_NE(hash(lhs2), hash(rhs1)); // technically only low probability
  EXPECT_EQ(hash(lhs2), hash(rhs2));

  auto v0 = smaller[0];
  std::array<decltype(v0), 1> a{{v0}};
  EXPECT_FALSE(equalTo(a, lhs1));
  EXPECT_FALSE(equalTo(a, rhs1));

  smaller.resize(1);
  EXPECT_FALSE(equalTo(a, lhs1));
  EXPECT_FALSE(equalTo(a, lhs2));
  EXPECT_TRUE(equalTo(a, smaller));

  EXPECT_EQ(hash(a), hash(smaller));
}

TEST	(	HeterogeneousAccess	,
		transparentIsSelected
	)

Definition at line 73 of file HeterogeneousAccessTest.cpp.

                                                 {
  checkTransparent<std::string>();
  checkTransparent<std::wstring>();
  checkTransparent<std::u16string>();
  checkTransparent<std::u32string>();

#if FOLLY_HAS_STRING_VIEW
  checkTransparent<std::string_view>();
  checkTransparent<std::wstring_view>();
  checkTransparent<std::u16string_view>();
  checkTransparent<std::u32string_view>();
#endif

  checkTransparent<fbstring>();

  checkTransparent<StringPiece>();
  checkTransparent<MutableStringPiece>();

  checkTransparent<Range<char const*>>();
  checkTransparent<Range<wchar_t const*>>();
  checkTransparent<Range<char16_t const*>>();
  checkTransparent<Range<char32_t const*>>();
  checkTransparent<Range<int const*>>();

  checkTransparent<Range<char*>>();
  checkTransparent<Range<wchar_t*>>();
  checkTransparent<Range<char16_t*>>();
  checkTransparent<Range<char32_t*>>();
  checkTransparent<Range<int*>>();

  checkTransparent<std::vector<char>>();
  checkTransparent<std::vector<wchar_t>>();
  checkTransparent<std::vector<char16_t>>();
  checkTransparent<std::vector<char32_t>>();
  checkTransparent<std::vector<int>>();

  checkTransparent<std::array<char const, 2>>();
  checkTransparent<std::array<wchar_t const, 2>>();
  checkTransparent<std::array<char16_t const, 2>>();
  checkTransparent<std::array<char32_t const, 2>>();
  checkTransparent<std::array<int const, 2>>();

  checkTransparent<std::array<char, 2>>();
  checkTransparent<std::array<wchar_t, 2>>();
  checkTransparent<std::array<char16_t, 2>>();
  checkTransparent<std::array<char32_t, 2>>();
  checkTransparent<std::array<int, 2>>();
}

TEST	(	HeterogeneousAccess	,
		transparentIsNotSelected
	)

Definition at line 122 of file HeterogeneousAccessTest.cpp.

                                                    {
  checkNotTransparent<char>();
  checkNotTransparent<int>();
  checkNotTransparent<float>();
  checkNotTransparent<std::pair<StringPiece, StringPiece>>();
  checkNotTransparent<StringVector>(); // no folly::hasher for Range
}

TEST	(	HeterogeneousAccess	,
		transparentMatches
	)

Definition at line 210 of file HeterogeneousAccessTest.cpp.

References folly::value().

                                              {
  runTestMatches<std::string>("abcd");
  runTestMatches<std::string>(u8"abcd");
  runTestMatches<std::wstring>(L"abcd");
  runTestMatches<std::u16string>(u"abcd");
  runTestMatches<std::u32string>(U"abcd");
  runTestMatches<fbstring>("abcd");
  runTestMatches<std::vector<int>>({1, 2, 3, 4});

  static_assert(
      std::is_convertible<small_vector<int, 2>, Range<int const*>>::value, "");
  runTestMatches<small_vector<int, 2>>({1, 2, 3, 4});
}