| // Formatting library for C++ - core tests |
| // |
| // Copyright (c) 2012 - present, Victor Zverovich |
| // All rights reserved. |
| // |
| // For the license information refer to format.h. |
| |
| #include <algorithm> |
| #include <climits> |
| #include <cstring> |
| #include <functional> |
| #include <iterator> |
| #include <limits> |
| #include <string> |
| #include <type_traits> |
| #include <memory> |
| |
| #include "test-assert.h" |
| |
| #include "gmock.h" |
| |
| // Check if fmt/core.h compiles with windows.h included before it. |
| #ifdef _WIN32 |
| # include <windows.h> |
| #endif |
| |
| #include "fmt/core.h" |
| |
| #undef min |
| #undef max |
| |
| using fmt::basic_format_arg; |
| using fmt::internal::basic_buffer; |
| using fmt::internal::value; |
| using fmt::string_view; |
| |
| using testing::_; |
| using testing::StrictMock; |
| |
| namespace { |
| |
| struct test_struct {}; |
| |
| template <typename Context, typename T> |
| basic_format_arg<Context> make_arg(const T &value) { |
| return fmt::internal::make_arg<Context>(value); |
| } |
| } // namespace |
| |
| FMT_BEGIN_NAMESPACE |
| template <typename Char> |
| struct formatter<test_struct, Char> { |
| template <typename ParseContext> |
| auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { |
| return ctx.begin(); |
| } |
| |
| typedef std::back_insert_iterator<basic_buffer<Char>> iterator; |
| |
| auto format(test_struct, basic_format_context<iterator, char> &ctx) |
| -> decltype(ctx.out()) { |
| const Char *test = "test"; |
| return std::copy_n(test, std::strlen(test), ctx.out()); |
| } |
| }; |
| FMT_END_NAMESPACE |
| |
| #if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 470 |
| TEST(BufferTest, Noncopyable) { |
| EXPECT_FALSE(std::is_copy_constructible<basic_buffer<char> >::value); |
| #if !FMT_MSC_VER |
| // std::is_copy_assignable is broken in MSVC2013. |
| EXPECT_FALSE(std::is_copy_assignable<basic_buffer<char> >::value); |
| #endif |
| } |
| |
| TEST(BufferTest, Nonmoveable) { |
| EXPECT_FALSE(std::is_move_constructible<basic_buffer<char> >::value); |
| #if !FMT_MSC_VER |
| // std::is_move_assignable is broken in MSVC2013. |
| EXPECT_FALSE(std::is_move_assignable<basic_buffer<char> >::value); |
| #endif |
| } |
| #endif |
| |
| // A test buffer with a dummy grow method. |
| template <typename T> |
| struct test_buffer : basic_buffer<T> { |
| void grow(std::size_t capacity) { this->set(FMT_NULL, capacity); } |
| }; |
| |
| template <typename T> |
| struct mock_buffer : basic_buffer<T> { |
| MOCK_METHOD1(do_grow, void (std::size_t capacity)); |
| |
| void grow(std::size_t capacity) { |
| this->set(this->data(), capacity); |
| do_grow(capacity); |
| } |
| |
| mock_buffer() {} |
| mock_buffer(T *data) { this->set(data, 0); } |
| mock_buffer(T *data, std::size_t capacity) { this->set(data, capacity); } |
| }; |
| |
| TEST(BufferTest, Ctor) { |
| { |
| mock_buffer<int> buffer; |
| EXPECT_EQ(FMT_NULL, &buffer[0]); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.size()); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.capacity()); |
| } |
| { |
| int dummy; |
| mock_buffer<int> buffer(&dummy); |
| EXPECT_EQ(&dummy, &buffer[0]); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.size()); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.capacity()); |
| } |
| { |
| int dummy; |
| std::size_t capacity = std::numeric_limits<std::size_t>::max(); |
| mock_buffer<int> buffer(&dummy, capacity); |
| EXPECT_EQ(&dummy, &buffer[0]); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.size()); |
| EXPECT_EQ(capacity, buffer.capacity()); |
| } |
| } |
| |
| struct dying_buffer : test_buffer<int> { |
| MOCK_METHOD0(die, void()); |
| ~dying_buffer() { die(); } |
| }; |
| |
| TEST(BufferTest, VirtualDtor) { |
| typedef StrictMock<dying_buffer> stict_mock_buffer; |
| stict_mock_buffer *mock_buffer = new stict_mock_buffer(); |
| EXPECT_CALL(*mock_buffer, die()); |
| basic_buffer<int> *buffer = mock_buffer; |
| delete buffer; |
| } |
| |
| TEST(BufferTest, Access) { |
| char data[10]; |
| mock_buffer<char> buffer(data, sizeof(data)); |
| buffer[0] = 11; |
| EXPECT_EQ(11, buffer[0]); |
| buffer[3] = 42; |
| EXPECT_EQ(42, *(&buffer[0] + 3)); |
| const basic_buffer<char> &const_buffer = buffer; |
| EXPECT_EQ(42, const_buffer[3]); |
| } |
| |
| TEST(BufferTest, Resize) { |
| char data[123]; |
| mock_buffer<char> buffer(data, sizeof(data)); |
| buffer[10] = 42; |
| EXPECT_EQ(42, buffer[10]); |
| buffer.resize(20); |
| EXPECT_EQ(20u, buffer.size()); |
| EXPECT_EQ(123u, buffer.capacity()); |
| EXPECT_EQ(42, buffer[10]); |
| buffer.resize(5); |
| EXPECT_EQ(5u, buffer.size()); |
| EXPECT_EQ(123u, buffer.capacity()); |
| EXPECT_EQ(42, buffer[10]); |
| // Check if resize calls grow. |
| EXPECT_CALL(buffer, do_grow(124)); |
| buffer.resize(124); |
| EXPECT_CALL(buffer, do_grow(200)); |
| buffer.resize(200); |
| } |
| |
| TEST(BufferTest, Clear) { |
| test_buffer<char> buffer; |
| buffer.resize(20); |
| buffer.resize(0); |
| EXPECT_EQ(static_cast<size_t>(0), buffer.size()); |
| EXPECT_EQ(20u, buffer.capacity()); |
| } |
| |
| TEST(BufferTest, Append) { |
| char data[15]; |
| mock_buffer<char> buffer(data, 10); |
| const char *test = "test"; |
| buffer.append(test, test + 5); |
| EXPECT_STREQ(test, &buffer[0]); |
| EXPECT_EQ(5u, buffer.size()); |
| buffer.resize(10); |
| EXPECT_CALL(buffer, do_grow(12)); |
| buffer.append(test, test + 2); |
| EXPECT_EQ('t', buffer[10]); |
| EXPECT_EQ('e', buffer[11]); |
| EXPECT_EQ(12u, buffer.size()); |
| } |
| |
| TEST(BufferTest, AppendAllocatesEnoughStorage) { |
| char data[19]; |
| mock_buffer<char> buffer(data, 10); |
| const char *test = "abcdefgh"; |
| buffer.resize(10); |
| EXPECT_CALL(buffer, do_grow(19)); |
| buffer.append(test, test + 9); |
| } |
| |
| TEST(ArgTest, FormatArgs) { |
| fmt::format_args args; |
| EXPECT_FALSE(args.get(1)); |
| } |
| |
| struct custom_context { |
| typedef char char_type; |
| |
| template <typename T> |
| struct formatter_type { |
| struct type { |
| template <typename ParseContext> |
| auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { |
| return ctx.begin(); |
| } |
| |
| const char *format(const T &, custom_context& ctx) { |
| ctx.called = true; |
| return FMT_NULL; |
| } |
| }; |
| }; |
| |
| bool called; |
| |
| fmt::format_parse_context parse_context() { |
| return fmt::format_parse_context(""); |
| } |
| void advance_to(const char *) {} |
| }; |
| |
| TEST(ArgTest, MakeValueWithCustomContext) { |
| test_struct t; |
| fmt::internal::value<custom_context> arg = |
| fmt::internal::make_value<custom_context>(t); |
| custom_context ctx = {false}; |
| arg.custom.format(&t, ctx); |
| EXPECT_TRUE(ctx.called); |
| } |
| |
| FMT_BEGIN_NAMESPACE |
| namespace internal { |
| template <typename Char> |
| bool operator==(custom_value<Char> lhs, custom_value<Char> rhs) { |
| return lhs.value == rhs.value; |
| } |
| } |
| FMT_END_NAMESPACE |
| |
| // Use a unique result type to make sure that there are no undesirable |
| // conversions. |
| struct test_result {}; |
| |
| template <typename T> |
| struct mock_visitor { |
| template <typename U> |
| struct result { typedef test_result type; }; |
| |
| mock_visitor() { |
| ON_CALL(*this, visit(_)).WillByDefault(testing::Return(test_result())); |
| } |
| |
| MOCK_METHOD1_T(visit, test_result (T value)); |
| MOCK_METHOD0_T(unexpected, void ()); |
| |
| test_result operator()(T value) { return visit(value); } |
| |
| template <typename U> |
| test_result operator()(U) { |
| unexpected(); |
| return test_result(); |
| } |
| }; |
| |
| template <typename T> |
| struct visit_type { typedef T Type; }; |
| |
| #define VISIT_TYPE(Type_, visit_type_) \ |
| template <> \ |
| struct visit_type<Type_> { typedef visit_type_ Type; } |
| |
| VISIT_TYPE(signed char, int); |
| VISIT_TYPE(unsigned char, unsigned); |
| VISIT_TYPE(short, int); |
| VISIT_TYPE(unsigned short, unsigned); |
| |
| #if LONG_MAX == INT_MAX |
| VISIT_TYPE(long, int); |
| VISIT_TYPE(unsigned long, unsigned); |
| #else |
| VISIT_TYPE(long, long long); |
| VISIT_TYPE(unsigned long, unsigned long long); |
| #endif |
| |
| VISIT_TYPE(float, double); |
| |
| #define CHECK_ARG_(Char, expected, value) { \ |
| testing::StrictMock<mock_visitor<decltype(expected)>> visitor; \ |
| EXPECT_CALL(visitor, visit(expected)); \ |
| typedef std::back_insert_iterator<basic_buffer<Char>> iterator; \ |
| fmt::visit(visitor, \ |
| make_arg<fmt::basic_format_context<iterator, Char>>(value)); \ |
| } |
| |
| #define CHECK_ARG(value, typename_) { \ |
| typedef decltype(value) value_type; \ |
| typename_ visit_type<value_type>::Type expected = value; \ |
| CHECK_ARG_(char, expected, value) \ |
| CHECK_ARG_(wchar_t, expected, value) \ |
| } |
| |
| template <typename T> |
| class NumericArgTest : public testing::Test {}; |
| |
| typedef ::testing::Types< |
| bool, signed char, unsigned char, signed, unsigned short, |
| int, unsigned, long, unsigned long, long long, unsigned long long, |
| float, double, long double> Types; |
| TYPED_TEST_CASE(NumericArgTest, Types); |
| |
| template <typename T> |
| typename std::enable_if<std::is_integral<T>::value, T>::type test_value() { |
| return static_cast<T>(42); |
| } |
| |
| template <typename T> |
| typename std::enable_if<std::is_floating_point<T>::value, T>::type |
| test_value() { |
| return static_cast<T>(4.2); |
| } |
| |
| TYPED_TEST(NumericArgTest, MakeAndVisit) { |
| CHECK_ARG(test_value<TypeParam>(), typename); |
| CHECK_ARG(std::numeric_limits<TypeParam>::min(), typename); |
| CHECK_ARG(std::numeric_limits<TypeParam>::max(), typename); |
| } |
| |
| TEST(ArgTest, CharArg) { |
| CHECK_ARG_(char, 'a', 'a'); |
| CHECK_ARG_(wchar_t, L'a', 'a'); |
| CHECK_ARG_(wchar_t, L'a', L'a'); |
| } |
| |
| TEST(ArgTest, StringArg) { |
| char str_data[] = "test"; |
| char *str = str_data; |
| const char *cstr = str; |
| CHECK_ARG_(char, cstr, str); |
| |
| string_view sref(str); |
| CHECK_ARG_(char, sref, std::string(str)); |
| } |
| |
| TEST(ArgTest, WStringArg) { |
| wchar_t str_data[] = L"test"; |
| wchar_t *str = str_data; |
| const wchar_t *cstr = str; |
| |
| fmt::wstring_view sref(str); |
| CHECK_ARG_(wchar_t, cstr, str); |
| CHECK_ARG_(wchar_t, cstr, cstr); |
| CHECK_ARG_(wchar_t, sref, std::wstring(str)); |
| CHECK_ARG_(wchar_t, sref, fmt::wstring_view(str)); |
| } |
| |
| TEST(ArgTest, PointerArg) { |
| void *p = FMT_NULL; |
| const void *cp = FMT_NULL; |
| CHECK_ARG_(char, cp, p); |
| CHECK_ARG_(wchar_t, cp, p); |
| CHECK_ARG(cp, ); |
| } |
| |
| struct check_custom { |
| test_result operator()( |
| fmt::basic_format_arg<fmt::format_context>::handle h) const { |
| struct test_buffer : fmt::internal::basic_buffer<char> { |
| char data[10]; |
| test_buffer() : fmt::internal::basic_buffer<char>(data, 0, 10) {} |
| void grow(std::size_t) {} |
| } buffer; |
| fmt::internal::basic_buffer<char> &base = buffer; |
| fmt::format_context ctx(std::back_inserter(base), "", fmt::format_args()); |
| h.format(ctx); |
| EXPECT_EQ("test", std::string(buffer.data, buffer.size())); |
| return test_result(); |
| } |
| }; |
| |
| TEST(ArgTest, CustomArg) { |
| test_struct test; |
| typedef mock_visitor<fmt::basic_format_arg<fmt::format_context>::handle> |
| visitor; |
| testing::StrictMock<visitor> v; |
| EXPECT_CALL(v, visit(_)).WillOnce(testing::Invoke(check_custom())); |
| fmt::visit(v, make_arg<fmt::format_context>(test)); |
| } |
| |
| TEST(ArgTest, VisitInvalidArg) { |
| testing::StrictMock< mock_visitor<fmt::monostate> > visitor; |
| EXPECT_CALL(visitor, visit(_)); |
| fmt::basic_format_arg<fmt::format_context> arg; |
| visit(visitor, arg); |
| } |
| |
| TEST(StringViewTest, Length) { |
| // Test that StringRef::size() returns string length, not buffer size. |
| char str[100] = "some string"; |
| EXPECT_EQ(std::strlen(str), string_view(str).size()); |
| EXPECT_LT(std::strlen(str), sizeof(str)); |
| } |
| |
| // Check string_view's comparison operator. |
| template <template <typename> class Op> |
| void check_op() { |
| const char *inputs[] = {"foo", "fop", "fo"}; |
| std::size_t num_inputs = sizeof(inputs) / sizeof(*inputs); |
| for (std::size_t i = 0; i < num_inputs; ++i) { |
| for (std::size_t j = 0; j < num_inputs; ++j) { |
| string_view lhs(inputs[i]), rhs(inputs[j]); |
| EXPECT_EQ(Op<int>()(lhs.compare(rhs), 0), Op<string_view>()(lhs, rhs)); |
| } |
| } |
| } |
| |
| TEST(StringViewTest, Compare) { |
| EXPECT_EQ(string_view("foo").compare(string_view("foo")), 0); |
| EXPECT_GT(string_view("fop").compare(string_view("foo")), 0); |
| EXPECT_LT(string_view("foo").compare(string_view("fop")), 0); |
| EXPECT_GT(string_view("foo").compare(string_view("fo")), 0); |
| EXPECT_LT(string_view("fo").compare(string_view("foo")), 0); |
| check_op<std::equal_to>(); |
| check_op<std::not_equal_to>(); |
| check_op<std::less>(); |
| check_op<std::less_equal>(); |
| check_op<std::greater>(); |
| check_op<std::greater_equal>(); |
| } |
| |
| enum basic_enum {}; |
| |
| TEST(CoreTest, ConvertToInt) { |
| EXPECT_FALSE((fmt::convert_to_int<char, char>::value)); |
| EXPECT_FALSE((fmt::convert_to_int<const char *, char>::value)); |
| EXPECT_TRUE((fmt::convert_to_int<basic_enum, char>::value)); |
| } |
| |
| enum enum_with_underlying_type : char {}; |
| |
| TEST(CoreTest, IsEnumConvertibleToInt) { |
| EXPECT_TRUE((fmt::convert_to_int<enum_with_underlying_type, char>::value)); |
| } |
| |
| namespace my_ns { |
| template <typename Char> |
| class my_string { |
| public: |
| my_string(const Char *s) : s_(s) {} |
| const Char * data() const FMT_NOEXCEPT { return s_.data(); } |
| std::size_t length() const FMT_NOEXCEPT { return s_.size(); } |
| operator const Char*() const { return s_.c_str(); } |
| private: |
| std::basic_string<Char> s_; |
| }; |
| |
| template <typename Char> |
| inline fmt::basic_string_view<Char> |
| to_string_view(const my_string<Char> &s) FMT_NOEXCEPT { |
| return { s.data(), s.length() }; |
| } |
| |
| struct non_string {}; |
| } |
| |
| namespace FakeQt { |
| class QString { |
| public: |
| QString(const wchar_t *s) : s_(std::make_shared<std::wstring>(s)) {} |
| const wchar_t *utf16() const FMT_NOEXCEPT { return s_->data(); } |
| int size() const FMT_NOEXCEPT { return static_cast<int>(s_->size()); } |
| #ifdef FMT_STRING_VIEW |
| operator FMT_STRING_VIEW<wchar_t>() const FMT_NOEXCEPT { return *s_; } |
| #endif |
| private: |
| std::shared_ptr<std::wstring> s_; |
| }; |
| |
| inline fmt::basic_string_view<wchar_t> to_string_view( |
| const QString &s) FMT_NOEXCEPT { |
| return {s.utf16(), |
| static_cast<std::size_t>(s.size())}; |
| } |
| } |
| |
| template <typename T> |
| class IsStringTest : public testing::Test {}; |
| |
| typedef ::testing::Types<char, wchar_t, char16_t, char32_t> StringCharTypes; |
| TYPED_TEST_CASE(IsStringTest, StringCharTypes); |
| |
| namespace { |
| template <typename Char> |
| struct derived_from_string_view : fmt::basic_string_view<Char> {}; |
| } |
| |
| TYPED_TEST(IsStringTest, IsString) { |
| EXPECT_TRUE((fmt::internal::is_string<TypeParam *>::value)); |
| EXPECT_TRUE((fmt::internal::is_string<const TypeParam *>::value)); |
| EXPECT_TRUE((fmt::internal::is_string<TypeParam[2]>::value)); |
| EXPECT_TRUE((fmt::internal::is_string<const TypeParam[2]>::value)); |
| EXPECT_TRUE((fmt::internal::is_string<std::basic_string<TypeParam>>::value)); |
| EXPECT_TRUE( |
| (fmt::internal::is_string<fmt::basic_string_view<TypeParam>>::value)); |
| EXPECT_TRUE( |
| (fmt::internal::is_string<derived_from_string_view<TypeParam>>::value)); |
| #ifdef FMT_STRING_VIEW |
| EXPECT_TRUE((fmt::internal::is_string<FMT_STRING_VIEW<TypeParam>>::value)); |
| #endif |
| EXPECT_TRUE((fmt::internal::is_string<my_ns::my_string<TypeParam>>::value)); |
| EXPECT_FALSE((fmt::internal::is_string<my_ns::non_string>::value)); |
| EXPECT_TRUE((fmt::internal::is_string<FakeQt::QString>::value)); |
| } |
| |
| TEST(CoreTest, Format) { |
| // This should work without including fmt/format.h. |
| #ifdef FMT_FORMAT_H_ |
| # error fmt/format.h must not be included in the core test |
| #endif |
| EXPECT_EQ(fmt::format("{}", 42), "42"); |
| } |
| |
| TEST(CoreTest, FormatTo) { |
| // This should work without including fmt/format.h. |
| #ifdef FMT_FORMAT_H_ |
| # error fmt/format.h must not be included in the core test |
| #endif |
| std::string s; |
| fmt::format_to(std::back_inserter(s), "{}", 42); |
| EXPECT_EQ(s, "42"); |
| } |
| |
| TEST(CoreTest, ToStringViewForeignStrings) { |
| using namespace my_ns; |
| using namespace FakeQt; |
| EXPECT_EQ(to_string_view(my_string<char>("42")), "42"); |
| EXPECT_EQ(to_string_view(my_string<wchar_t>(L"42")), L"42"); |
| EXPECT_EQ(to_string_view(QString(L"42")), L"42"); |
| fmt::internal::type type = |
| fmt::internal::get_type<fmt::format_context, my_string<char>>::value; |
| EXPECT_EQ(type, fmt::internal::string_type); |
| type = |
| fmt::internal::get_type<fmt::wformat_context, my_string<wchar_t>>::value; |
| EXPECT_EQ(type, fmt::internal::string_type); |
| type = fmt::internal::get_type<fmt::wformat_context, QString>::value; |
| EXPECT_EQ(type, fmt::internal::string_type); |
| // Does not compile: only wide format contexts are compatible with QString! |
| // type = fmt::internal::get_type<fmt::format_context, QString>::value; |
| } |
| |
| TEST(CoreTest, FormatForeignStrings) { |
| using namespace my_ns; |
| using namespace FakeQt; |
| EXPECT_EQ(fmt::format(my_string<char>("{}"), 42), "42"); |
| EXPECT_EQ(fmt::format(my_string<wchar_t>(L"{}"), 42), L"42"); |
| EXPECT_EQ(fmt::format(QString(L"{}"), 42), L"42"); |
| EXPECT_EQ(fmt::format(QString(L"{}"), my_string<wchar_t>(L"42")), L"42"); |
| EXPECT_EQ(fmt::format(my_string<wchar_t>(L"{}"), QString(L"42")), L"42"); |
| } |
| |
| struct implicitly_convertible_to_string_view { |
| operator fmt::string_view() const { return "foo"; } |
| }; |
| |
| TEST(FormatterTest, FormatImplicitlyConvertibleToStringView) { |
| EXPECT_EQ("foo", fmt::format("{}", implicitly_convertible_to_string_view())); |
| } |
| |
| // std::is_constructible is broken in MSVC until version 2015. |
| #if FMT_USE_EXPLICIT && (!FMT_MSC_VER || FMT_MSC_VER >= 1900) |
| struct explicitly_convertible_to_string_view { |
| explicit operator fmt::string_view() const { return "foo"; } |
| }; |
| |
| TEST(FormatterTest, FormatExplicitlyConvertibleToStringView) { |
| EXPECT_EQ("foo", fmt::format("{}", explicitly_convertible_to_string_view())); |
| } |
| |
| struct explicitly_convertible_to_wstring_view { |
| explicit operator fmt::wstring_view() const { return L"foo"; } |
| }; |
| |
| TEST(FormatterTest, FormatExplicitlyConvertibleToWStringView) { |
| EXPECT_EQ(L"foo", |
| fmt::format(L"{}", explicitly_convertible_to_wstring_view())); |
| } |
| |
| struct explicitly_convertible_to_string_like { |
| template < |
| typename String, |
| typename = typename std::enable_if< |
| std::is_constructible<String, const char*, std::size_t>::value>::type> |
| FMT_EXPLICIT operator String() const { return String("foo", 3u); } |
| }; |
| |
| TEST(FormatterTest, FormatExplicitlyConvertibleToStringLike) { |
| EXPECT_EQ("foo", fmt::format("{}", explicitly_convertible_to_string_like())); |
| } |
| #endif |