//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
#define TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
#include <algorithm>
#include <array>
#include <charconv>
#include <concepts>
#include <deque>
#include <format>
#include <functional> // std::identity
#include <list>
#include <ranges>
#include <span>
#include <tuple>
#include <utility>
#include <vector>
#include "format.functions.common.h"
#include "make_string.h"
#include "platform_support.h" // locale name macros
#include "test_iterators.h"
#include "test_macros.h"
//
// Char
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_char_default(TestFunction check, ExceptionTest check_exception, auto&& input) {
// Note when no range-underlying-spec is present the char is escaped,
check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{}"), input);
check(SV("['H', 'e', 'l', 'l', 'o']^42"), SV("{}^42"), input);
check(SV("['H', 'e', 'l', 'l', 'o']^42"), SV("{:}^42"), input);
// when one is present there is no escaping,
check(SV("[H, e, l, l, o]"), SV("{::}"), input);
check(SV("[H, e, l, l, o]"), SV("{::<}"), input);
// unless forced by the type specifier.
check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{::?}"), input);
check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{::<?}"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("['H', 'e', 'l', 'l', 'o'] "), SV("{:30}"), input);
check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<30}"), input);
check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^30}"), input);
check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>30}"), input);
check(SV("['H', 'e', 'l', 'l', 'o'] "), SV("{:{}}"), input, 30);
check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<{}}"), input, 30);
check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^{}}"), input, 30);
check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>{}}"), input, 30);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__'H', 'e', 'l', 'l', 'o'___"), SV("{:_^28n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[H , e , l , l , o ]"), SV("{::4}"), input);
check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<4}"), input);
check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^4}"), input);
check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>4}"), input);
check(SV("[H , e , l , l , o ]"), SV("{::{}}"), input, 4);
check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<{}}"), input, 4);
check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^{}}"), input, 4);
check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>{}}"), input, 4);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier for a character does not allow the sign option", SV("{::-}"), input);
check_exception("The format specifier for a character does not allow the sign option", SV("{::+}"), input);
check_exception("The format specifier for a character does not allow the sign option", SV("{:: }"), input);
check(SV("[72, 101, 108, 108, 111]"), SV("{::-d}"), input);
check(SV("[+72, +101, +108, +108, +111]"), SV("{::+d}"), input);
check(SV("[ 72, 101, 108, 108, 111]"), SV("{:: d}"), input);
// *** alternate form ***
check_exception("The format specifier for a character does not allow the alternate form option", SV("{::#}"), input);
check(SV("[0x48, 0x65, 0x6c, 0x6c, 0x6f]"), SV("{::#x}"), input);
// *** zero-padding ***
check_exception("The format specifier for a character does not allow the zero-padding option", SV("{::05}"), input);
check(SV("[00110, 00145, 00154, 00154, 00157]"), SV("{::05o}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check(SV("[H, e, l, l, o]"), SV("{::L}"), input);
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
check_exception("The type option contains an invalid value for a character formatting argument", fmt, input);
// ***** Both have a format-spec
check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^25::>2}"), input);
check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>2}"), input, 25);
check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>{}}"), input, 25, 2);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>2}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>{}}"), input, 25);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_char_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
check(SV("Hello"), SV("{:s}"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("Hello "), SV("{:8s}"), input);
check(SV("Hello***"), SV("{:*<8s}"), input);
check(SV("_Hello__"), SV("{:_^8s}"), input);
check(SV("###Hello"), SV("{:#>8s}"), input);
check(SV("Hello "), SV("{:{}s}"), input, 8);
check(SV("Hello***"), SV("{:*<{}s}"), input, 8);
check(SV("_Hello__"), SV("{:_^{}s}"), input, 8);
check(SV("###Hello"), SV("{:#>{}s}"), input, 8);
check_exception("The format string contains an invalid escape sequence", SV("{:}<s}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<s}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-s}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+s}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: s}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#s}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0s}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.s}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:Ls}"), input);
// *** n
check_exception("The n option and type s can't be used together", SV("{:ns}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("The type option contains an invalid value for a character formatting argument", SV("{::<s}"), input);
// ***** Only underlying has a format-spec
check_exception("Type s and an underlying format specification can't be used together", SV("{:s:}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
check_exception("The type option contains an invalid value for a character formatting argument", fmt, input);
// ***** Both have a format-spec
check_exception("Type s and an underlying format specification can't be used together", SV("{:5s:5}"), input);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_char_escaped_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
check(SV(R"("\"Hello'")"), SV("{:?s}"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV(R"("\"Hello'" )"), SV("{:13?s}"), input);
check(SV(R"("\"Hello'"***)"), SV("{:*<13?s}"), input);
check(SV(R"(_"\"Hello'"__)"), SV("{:_^13?s}"), input);
check(SV(R"(###"\"Hello'")"), SV("{:#>13?s}"), input);
check(SV(R"("\"Hello'" )"), SV("{:{}?s}"), input, 13);
check(SV(R"("\"Hello'"***)"), SV("{:*<{}?s}"), input, 13);
check(SV(R"(_"\"Hello'"__)"), SV("{:_^{}?s}"), input, 13);
check(SV(R"(###"\"Hello'")"), SV("{:#>{}?s}"), input, 13);
check_exception("The format string contains an invalid escape sequence", SV("{:}<?s}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<?s}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{::<?s}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-?s}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+?s}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: ?s}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#?s}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0?s}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.?s}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L?s}"), input);
// *** n
check_exception("The n option and type ?s can't be used together", SV("{:n?s}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
// ***** Only underlying has a format-spec
check_exception("Type ?s and an underlying format specification can't be used together", SV("{:?s:}"), input);
// ***** Both have a format-spec
check_exception("Type ?s and an underlying format specification can't be used together", SV("{:5?s:5}"), input);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_char(TestFunction check, ExceptionTest check_exception) {
test_char_default<CharT>(
check, check_exception, std::array{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
// This tests two different implementations in libc++. A basic_string_view
// formatter if the range is contiguous, a basic_string otherwise.
test_char_escaped_string<CharT>(
check,
check_exception,
std::array{CharT('"'), CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o'), CharT('\'')});
test_char_escaped_string<CharT>(
check,
check_exception,
std::list{CharT('"'), CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o'), CharT('\'')});
// This tests two different implementations in libc++. A basic_string_view
// formatter if the range is contiguous, a basic_string otherwise.
test_char_string<CharT>(
check, check_exception, std::array{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
test_char_string<CharT>(
check, check_exception, std::list{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
}
//
// char -> wchar_t
//
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class TestFunction, class ExceptionTest>
void test_char_to_wchar(TestFunction check, ExceptionTest check_exception) {
test_char_default<wchar_t>(check, check_exception, std::array{'H', 'e', 'l', 'l', 'o'});
// The types s and ?s may only be used when using range_formatter<T, charT>
// where the types T and charT are the same. This means this can't be used for
// range_formatter<wchar_t, char> even when formatter<wchar_t, char> has a
// debug-enabled specialization.
using CharT = wchar_t;
check_exception(
"Type s requires character type as formatting argument", SV("{:s}"), std::array{'H', 'e', 'l', 'l', 'o'});
check_exception(
"Type ?s requires character type as formatting argument", SV("{:?s}"), std::array{'H', 'e', 'l', 'l', 'o'});
}
#endif
//
// Bool
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_bool(TestFunction check, ExceptionTest check_exception) {
std::array input{true, true, false};
check(SV("[true, true, false]"), SV("{}"), input);
check(SV("[true, true, false]^42"), SV("{}^42"), input);
check(SV("[true, true, false]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[true, true, false] "), SV("{:24}"), input);
check(SV("[true, true, false]*****"), SV("{:*<24}"), input);
check(SV("__[true, true, false]___"), SV("{:_^24}"), input);
check(SV("#####[true, true, false]"), SV("{:#>24}"), input);
check(SV("[true, true, false] "), SV("{:{}}"), input, 24);
check(SV("[true, true, false]*****"), SV("{:*<{}}"), input, 24);
check(SV("__[true, true, false]___"), SV("{:_^{}}"), input, 24);
check(SV("#####[true, true, false]"), SV("{:#>{}}"), input, 24);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__true, true, false___"), SV("{:_^22n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[true , true , false ]"), SV("{::7}"), input);
check(SV("[true***, true***, false**]"), SV("{::*<7}"), input);
check(SV("[_true__, _true__, _false_]"), SV("{::_^7}"), input);
check(SV("[:::true, :::true, ::false]"), SV("{:::>7}"), input);
check(SV("[true , true , false ]"), SV("{::{}}"), input, 7);
check(SV("[true***, true***, false**]"), SV("{::*<{}}"), input, 7);
check(SV("[_true__, _true__, _false_]"), SV("{::_^{}}"), input, 7);
check(SV("[:::true, :::true, ::false]"), SV("{:::>{}}"), input, 7);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier for a bool does not allow the sign option", SV("{::-}"), input);
check_exception("The format specifier for a bool does not allow the sign option", SV("{::+}"), input);
check_exception("The format specifier for a bool does not allow the sign option", SV("{:: }"), input);
check(SV("[1, 1, 0]"), SV("{::-d}"), input);
check(SV("[+1, +1, +0]"), SV("{::+d}"), input);
check(SV("[ 1, 1, 0]"), SV("{:: d}"), input);
// *** alternate form ***
check_exception("The format specifier for a bool does not allow the alternate form option", SV("{::#}"), input);
check(SV("[0x1, 0x1, 0x0]"), SV("{::#x}"), input);
// *** zero-padding ***
check_exception("The format specifier for a bool does not allow the zero-padding option", SV("{::05}"), input);
check(SV("[00001, 00001, 00000]"), SV("{::05o}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check(SV("[true, true, false]"), SV("{::L}"), input);
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
check_exception("The type option contains an invalid value for a bool formatting argument", fmt, input);
// ***** Both have a format-spec
check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^32::>7}"), input);
check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>7}"), input, 32);
check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>{}}"), input, 32, 7);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>5}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>{}}"), input, 32);
}
//
// Integral
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_int(TestFunction check, ExceptionTest check_exception, auto&& input, auto make_range) {
check(SV("[1, 2, 42, -42]"), SV("{}"), make_range(input));
check(SV("[1, 2, 42, -42]^42"), SV("{}^42"), make_range(input));
check(SV("[1, 2, 42, -42]^42"), SV("{:}^42"), make_range(input));
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[1, 2, 42, -42] "), SV("{:20}"), make_range(input));
check(SV("[1, 2, 42, -42]*****"), SV("{:*<20}"), make_range(input));
check(SV("__[1, 2, 42, -42]___"), SV("{:_^20}"), make_range(input));
check(SV("#####[1, 2, 42, -42]"), SV("{:#>20}"), make_range(input));
check(SV("[1, 2, 42, -42] "), SV("{:{}}"), make_range(input), 20);
check(SV("[1, 2, 42, -42]*****"), SV("{:*<{}}"), make_range(input), 20);
check(SV("__[1, 2, 42, -42]___"), SV("{:_^{}}"), make_range(input), 20);
check(SV("#####[1, 2, 42, -42]"), SV("{:#>{}}"), make_range(input), 20);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), make_range(input));
check_exception("The fill option contains an invalid value", SV("{:{<}"), make_range(input));
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), make_range(input));
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), make_range(input));
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), make_range(input));
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), make_range(input));
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), make_range(input));
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), make_range(input));
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), make_range(input));
// *** n
check(SV("__1, 2, 42, -42___"), SV("{:_^18n}"), make_range(input));
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), make_range(input));
check_exception("Type s requires character type as formatting argument", SV("{:s}"), make_range(input));
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), make_range(input));
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, make_range(input));
// ***** Only underlying has a format-spec
check(SV("[ 1, 2, 42, -42]"), SV("{::5}"), make_range(input));
check(SV("[1****, 2****, 42***, -42**]"), SV("{::*<5}"), make_range(input));
check(SV("[__1__, __2__, _42__, _-42_]"), SV("{::_^5}"), make_range(input));
check(SV("[::::1, ::::2, :::42, ::-42]"), SV("{:::>5}"), make_range(input));
check(SV("[ 1, 2, 42, -42]"), SV("{::{}}"), make_range(input), 5);
check(SV("[1****, 2****, 42***, -42**]"), SV("{::*<{}}"), make_range(input), 5);
check(SV("[__1__, __2__, _42__, _-42_]"), SV("{::_^{}}"), make_range(input), 5);
check(SV("[::::1, ::::2, :::42, ::-42]"), SV("{:::>{}}"), make_range(input), 5);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), make_range(input));
check_exception("The fill option contains an invalid value", SV("{::{<}"), make_range(input));
// *** sign ***
check(SV("[1, 2, 42, -42]"), SV("{::-}"), make_range(input));
check(SV("[+1, +2, +42, -42]"), SV("{::+}"), make_range(input));
check(SV("[ 1, 2, 42, -42]"), SV("{:: }"), make_range(input));
// *** alternate form ***
check(SV("[0x1, 0x2, 0x2a, -0x2a]"), SV("{::#x}"), make_range(input));
// *** zero-padding ***
check(SV("[00001, 00002, 00042, -0042]"), SV("{::05}"), make_range(input));
check(SV("[00001, 00002, 0002a, -002a]"), SV("{::05x}"), make_range(input));
check(SV("[0x001, 0x002, 0x02a, -0x2a]"), SV("{::#05x}"), make_range(input));
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), make_range(input));
// *** locale-specific form ***
check(SV("[1, 2, 42, -42]"), SV("{::L}"), make_range(input)); // does nothing in this test, but is accepted.
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX"))
check_exception(
"The type option contains an invalid value for an integer formatting argument", fmt, make_range(input));
// ***** Both have a format-spec
check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^33::>5}"), make_range(input));
check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^{}::>5}"), make_range(input), 33);
check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^{}::>{}}"), make_range(input), 33, 5);
check_exception("The argument index value is too large for the number of arguments supplied",
SV("{:^^{}::>5}"),
make_range(input));
check_exception("The argument index value is too large for the number of arguments supplied",
SV("{:^^{}::>{}}"),
make_range(input),
33);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_int(TestFunction check, ExceptionTest check_exception) {
test_int<CharT>(check, check_exception, std::array{1, 2, 42, -42}, std::identity());
test_int<CharT>(check, check_exception, std::list{1, 2, 42, -42}, std::identity());
test_int<CharT>(check, check_exception, std::vector{1, 2, 42, -42}, std::identity());
std::array input{1, 2, 42, -42};
test_int<CharT>(check, check_exception, std::span{input}, std::identity());
}
//
// Floating point
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_floating_point(TestFunction check, ExceptionTest check_exception, auto&& input) {
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{}"), input);
check(SV("[-42.5, 0, 1.25, 42.5]^42"), SV("{}^42"), input);
check(SV("[-42.5, 0, 1.25, 42.5]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[-42.5, 0, 1.25, 42.5] "), SV("{:27}"), input);
check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<27}"), input);
check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^27}"), input);
check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>27}"), input);
check(SV("[-42.5, 0, 1.25, 42.5] "), SV("{:{}}"), input, 27);
check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<{}}"), input, 27);
check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^{}}"), input, 27);
check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>{}}"), input, 27);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__-42.5, 0, 1.25, 42.5___"), SV("{:_^25n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::5}"), input);
check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<5}"), input);
check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^5}"), input);
check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>5}"), input);
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::{}}"), input, 5);
check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<{}}"), input, 5);
check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^{}}"), input, 5);
check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>{}}"), input, 5);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::-}"), input);
check(SV("[-42.5, +0, +1.25, +42.5]"), SV("{::+}"), input);
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{:: }"), input);
// *** alternate form ***
check(SV("[-42.5, 0., 1.25, 42.5]"), SV("{::#}"), input);
// *** zero-padding ***
check(SV("[-42.5, 00000, 01.25, 042.5]"), SV("{::05}"), input);
check(SV("[-42.5, 0000., 01.25, 042.5]"), SV("{::#05}"), input);
// *** precision ***
check(SV("[-42, 0, 1.2, 42]"), SV("{::.2}"), input);
check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.3f}"), input);
check(SV("[-42, 0, 1.2, 42]"), SV("{::.{}}"), input, 2);
check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.{}f}"), input, 3);
check_exception("The precision option does not contain a value or an argument index", SV("{::.}"), input);
// *** locale-specific form ***
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input); // does not require locales present
#ifndef TEST_HAS_NO_LOCALIZATION
// TODO FMT Enable with locale testing active
# if 0
std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
check(SV("[-42,5, 0, 1,25, 42,5]"), SV("{::L}"), input);
std::locale::global(std::locale(LOCALE_en_US_UTF_8));
check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input);
std::locale::global(std::locale::classic());
# endif
#endif // TEST_HAS_NO_LOCALIZATION
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("aAeEfFgG"))
check_exception("The type option contains an invalid value for a floating-point formatting argument", fmt, input);
// ***** Both have a format-spec
check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^33::>5}"), input);
check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>5}"), input, 33);
check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^33::>5.2}"), input);
check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>5.2}"), input, 33);
check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.2}"), input, 33, 5);
check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.{}}"), input, 33, 5, 2);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>5.2}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>{}.2}"), input, 33);
check_exception(
"The argument index value is too large for the number of arguments supplied",
SV("{:^^{}::>{}.{}}"),
input,
33,
5);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_floating_point(TestFunction check, ExceptionTest check_exception) {
test_floating_point<CharT>(check, check_exception, std::array{-42.5f, 0.0f, 1.25f, 42.5f});
test_floating_point<CharT>(check, check_exception, std::vector{-42.5, 0.0, 1.25, 42.5});
std::array input{-42.5l, 0.0l, 1.25l, 42.5l};
test_floating_point<CharT>(check, check_exception, std::span{input});
}
//
// Pointer
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_pointer(TestFunction check, ExceptionTest check_exception, auto&& input) {
check(SV("[0x0]"), SV("{}"), input);
check(SV("[0x0]^42"), SV("{}^42"), input);
check(SV("[0x0]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[0x0] "), SV("{:10}"), input);
check(SV("[0x0]*****"), SV("{:*<10}"), input);
check(SV("__[0x0]___"), SV("{:_^10}"), input);
check(SV("#####[0x0]"), SV("{:#>10}"), input);
check(SV("[0x0] "), SV("{:{}}"), input, 10);
check(SV("[0x0]*****"), SV("{:*<{}}"), input, 10);
check(SV("__[0x0]___"), SV("{:_^{}}"), input, 10);
check(SV("#####[0x0]"), SV("{:#>{}}"), input, 10);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("_0x0_"), SV("{:_^5n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[ 0x0]"), SV("{::5}"), input);
check(SV("[0x0**]"), SV("{::*<5}"), input);
check(SV("[_0x0_]"), SV("{::_^5}"), input);
check(SV("[::0x0]"), SV("{:::>5}"), input);
check(SV("[ 0x0]"), SV("{::{}}"), input, 5);
check(SV("[0x0**]"), SV("{::*<{}}"), input, 5);
check(SV("[_0x0_]"), SV("{::_^{}}"), input, 5);
check(SV("[::0x0]"), SV("{:::>{}}"), input, 5);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::-}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::#}"), input);
// *** zero-padding ***
check(SV("[0x0000]"), SV("{::06}"), input);
check(SV("[0x0000]"), SV("{::06p}"), input);
check(SV("[0X0000]"), SV("{::06P}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::L}"), input);
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("pP"))
check_exception("The type option contains an invalid value for a pointer formatting argument", fmt, input);
// ***** Both have a format-spec
check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>5}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>{}}"), input, 12);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_pointer(TestFunction check, ExceptionTest check_exception) {
test_pointer<CharT>(check, check_exception, std::array{nullptr});
test_pointer<CharT>(check, check_exception, std::array{static_cast<const void*>(0)});
test_pointer<CharT>(check, check_exception, std::array{static_cast<void*>(0)});
}
//
// String
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
check(SV(R"(["Hello", "world"])"), SV("{}"), input);
check(SV(R"(["Hello", "world"]^42)"), SV("{}^42"), input);
check(SV(R"(["Hello", "world"]^42)"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV(R"(["Hello", "world"] )"), SV("{:23}"), input);
check(SV(R"(["Hello", "world"]*****)"), SV("{:*<23}"), input);
check(SV(R"(__["Hello", "world"]___)"), SV("{:_^23}"), input);
check(SV(R"(#####["Hello", "world"])"), SV("{:#>23}"), input);
check(SV(R"(["Hello", "world"] )"), SV("{:{}}"), input, 23);
check(SV(R"(["Hello", "world"]*****)"), SV("{:*<{}}"), input, 23);
check(SV(R"(__["Hello", "world"]___)"), SV("{:_^{}}"), input, 23);
check(SV(R"(#####["Hello", "world"])"), SV("{:#>{}}"), input, 23);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV(R"(_"Hello", "world"_)"), SV("{:_^18n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV(R"([Hello , world ])"), SV("{::8}"), input);
check(SV(R"([Hello***, world***])"), SV("{::*<8}"), input);
check(SV(R"([_Hello__, _world__])"), SV("{::_^8}"), input);
check(SV(R"([:::Hello, :::world])"), SV("{:::>8}"), input);
check(SV(R"([Hello , world ])"), SV("{::{}}"), input, 8);
check(SV(R"([Hello***, world***])"), SV("{::*<{}}"), input, 8);
check(SV(R"([_Hello__, _world__])"), SV("{::_^{}}"), input, 8);
check(SV(R"([:::Hello, :::world])"), SV("{:::>{}}"), input, 8);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::-}"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{::05}"), input);
// *** precision ***
check(SV(R"([Hel, wor])"), SV("{::.3}"), input);
check(SV(R"([Hel, wor])"), SV("{::.{}}"), input, 3);
check_exception("The precision option does not contain a value or an argument index", SV("{::.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::L}"), input);
// *** type ***
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s?"))
check_exception("The type option contains an invalid value for a string formatting argument", fmt, input);
// ***** Both have a format-spec
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>8}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}::>{}}"), input, 25);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_string(TestFunction check, ExceptionTest check_exception) {
test_string<CharT>(check, check_exception, std::array{CSTR("Hello"), CSTR("world")});
test_string<CharT>(check, check_exception, std::array{STR("Hello"), STR("world")});
test_string<CharT>(check, check_exception, std::array{SV("Hello"), SV("world")});
}
//
// Handle
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_status(TestFunction check, ExceptionTest check_exception) {
std::array input{status::foo, status::bar, status::foobar};
check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{}"), input);
check(SV("[0xaaaa, 0x5555, 0xaa55]^42"), SV("{}^42"), input);
check(SV("[0xaaaa, 0x5555, 0xaa55]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[0xaaaa, 0x5555, 0xaa55] "), SV("{:29}"), input);
check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<29}"), input);
check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^29}"), input);
check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>29}"), input);
check(SV("[0xaaaa, 0x5555, 0xaa55] "), SV("{:{}}"), input, 29);
check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<{}}"), input, 29);
check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^{}}"), input, 29);
check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>{}}"), input, 29);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__0xaaaa, 0x5555, 0xaa55___"), SV("{:_^27n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check_exception("The type option contains an invalid value for a status formatting argument", SV("{::*<7}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("sxX"))
check_exception("The type option contains an invalid value for a status formatting argument", fmt, input);
check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{::x}"), input);
check(SV("[0XAAAA, 0X5555, 0XAA55]"), SV("{::X}"), input);
check(SV("[foo, bar, foobar]"), SV("{::s}"), input);
// ***** Both have a format-spec
check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^29:X}"), input);
check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^{}:X}"), input, 29);
check_exception("The argument index value is too large for the number of arguments supplied", SV("{:^^{}:X}"), input);
}
//
// Pair
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_pair_tuple(TestFunction check, ExceptionTest check_exception, auto&& input) {
// [format.range.formatter]/3
// For range_formatter<T, charT>, the format-spec in a
// range-underlying-spec, if any, is interpreted by formatter<T, charT>.
//
// template<class ParseContext>
// constexpr typename ParseContext::iterator
// parse(ParseContext& ctx);
// [format.tuple]/7
// ... if e.set_debug_format() is a valid expression, calls
// e.set_debug_format().
// So when there is no range-underlying-spec, there is no need to call parse
// thus the char element is not escaped.
// TODO FMT P2733 addresses this issue.
check(SV("[(1, 'a'), (42, '*')]"), SV("{}"), input);
check(SV("[(1, 'a'), (42, '*')]^42"), SV("{}^42"), input);
check(SV("[(1, 'a'), (42, '*')]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[(1, 'a'), (42, '*')] "), SV("{:26}"), input);
check(SV("[(1, 'a'), (42, '*')]*****"), SV("{:*<26}"), input);
check(SV("__[(1, 'a'), (42, '*')]___"), SV("{:_^26}"), input);
check(SV("#####[(1, 'a'), (42, '*')]"), SV("{:#>26}"), input);
check(SV("[(1, 'a'), (42, '*')] "), SV("{:{}}"), input, 26);
check(SV("[(1, 'a'), (42, '*')]*****"), SV("{:*<{}}"), input, 26);
check(SV("__[(1, 'a'), (42, '*')]___"), SV("{:_^{}}"), input, 26);
check(SV("#####[(1, 'a'), (42, '*')]"), SV("{:#>{}}"), input, 26);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__(1, 'a'), (42, '*')___"), SV("{:_^24n}"), input);
check(SV("__(1, 'a'), (42, '*')___"), SV("{:_^24nm}"), input); // m should have no effect
// *** type ***
check(SV("__{(1, 'a'), (42, '*')}___"), SV("{:_^26m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[(1, 'a') , (42, '*') ]"), SV("{::11}"), input);
check(SV("[(1, 'a')***, (42, '*')**]"), SV("{::*<11}"), input);
check(SV("[_(1, 'a')__, _(42, '*')_]"), SV("{::_^11}"), input);
check(SV("[###(1, 'a'), ##(42, '*')]"), SV("{::#>11}"), input);
check(SV("[(1, 'a') , (42, '*') ]"), SV("{::{}}"), input, 11);
check(SV("[(1, 'a')***, (42, '*')**]"), SV("{::*<{}}"), input, 11);
check(SV("[_(1, 'a')__, _(42, '*')_]"), SV("{::_^{}}"), input, 11);
check(SV("[###(1, 'a'), ##(42, '*')]"), SV("{::#>{}}"), input, 11);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{::+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{::05}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::L}"), input);
// *** type ***
check(SV("[1: 'a', 42: '*']"), SV("{::m}"), input);
check(SV("[1, 'a', 42, '*']"), SV("{::n}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Both have a format-spec
check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^31:#>11}"), input);
check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^31:#>11}"), input);
check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^{}:#>11}"), input, 31);
check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^{}:#>{}}"), input, 31, 11);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>5}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>{}}"), input, 31);
check(SV("1: 'a', 42: '*'"), SV("{:n:m}"), input);
check(SV("1, 'a', 42, '*'"), SV("{:n:n}"), input);
check(SV("{1: 'a', 42: '*'}"), SV("{:m:m}"), input);
check(SV("{1, 'a', 42, '*'}"), SV("{:m:n}"), input);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_pair_tuple(TestFunction check, ExceptionTest check_exception) {
test_pair_tuple<CharT>(
check, check_exception, std::array{std::make_pair(1, CharT('a')), std::make_pair(42, CharT('*'))});
test_pair_tuple<CharT>(
check, check_exception, std::array{std::make_tuple(1, CharT('a')), std::make_tuple(42, CharT('*'))});
}
//
// Tuple 1
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_tuple_int(TestFunction check, ExceptionTest check_exception) {
std::array input{std::make_tuple(42), std::make_tuple(99)};
check(SV("[(42), (99)]"), SV("{}"), input);
check(SV("[(42), (99)]^42"), SV("{}^42"), input);
check(SV("[(42), (99)]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[(42), (99)] "), SV("{:17}"), input);
check(SV("[(42), (99)]*****"), SV("{:*<17}"), input);
check(SV("__[(42), (99)]___"), SV("{:_^17}"), input);
check(SV("#####[(42), (99)]"), SV("{:#>17}"), input);
check(SV("[(42), (99)] "), SV("{:{}}"), input, 17);
check(SV("[(42), (99)]*****"), SV("{:*<{}}"), input, 17);
check(SV("__[(42), (99)]___"), SV("{:_^{}}"), input, 17);
check(SV("#####[(42), (99)]"), SV("{:#>{}}"), input, 17);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__(42), (99)___"), SV("{:_^15n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[(42) , (99) ]"), SV("{::7}"), input);
check(SV("[(42)***, (99)***]"), SV("{::*<7}"), input);
check(SV("[_(42)__, _(99)__]"), SV("{::_^7}"), input);
check(SV("[###(42), ###(99)]"), SV("{::#>7}"), input);
check(SV("[(42) , (99) ]"), SV("{::{}}"), input, 7);
check(SV("[(42)***, (99)***]"), SV("{::*<{}}"), input, 7);
check(SV("[_(42)__, _(99)__]"), SV("{::_^{}}"), input, 7);
check(SV("[###(42), ###(99)]"), SV("{::#>{}}"), input, 7);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{::+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{::05}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::L}"), input);
// *** type ***
check(SV("[42, 99]"), SV("{::n}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Both have a format-spec
check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^23:#>7}"), input);
check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^23:#>7}"), input);
check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^{}:#>7}"), input, 23);
check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^{}:#>{}}"), input, 23, 7);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>5}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>{}}"), input, 23);
}
//
// Tuple 3
//
template <class CharT, class TestFunction, class ExceptionTest>
void test_tuple_int_int_int(TestFunction check, ExceptionTest check_exception) {
std::array input{std::make_tuple(42, 99, 0), std::make_tuple(1, 10, 100)};
check(SV("[(42, 99, 0), (1, 10, 100)]"), SV("{}"), input);
check(SV("[(42, 99, 0), (1, 10, 100)]^42"), SV("{}^42"), input);
check(SV("[(42, 99, 0), (1, 10, 100)]^42"), SV("{:}^42"), input);
// ***** underlying has no format-spec
// *** align-fill & width ***
check(SV("[(42, 99, 0), (1, 10, 100)] "), SV("{:32}"), input);
check(SV("[(42, 99, 0), (1, 10, 100)]*****"), SV("{:*<32}"), input);
check(SV("__[(42, 99, 0), (1, 10, 100)]___"), SV("{:_^32}"), input);
check(SV("#####[(42, 99, 0), (1, 10, 100)]"), SV("{:#>32}"), input);
check(SV("[(42, 99, 0), (1, 10, 100)] "), SV("{:{}}"), input, 32);
check(SV("[(42, 99, 0), (1, 10, 100)]*****"), SV("{:*<{}}"), input, 32);
check(SV("__[(42, 99, 0), (1, 10, 100)]___"), SV("{:_^{}}"), input, 32);
check(SV("#####[(42, 99, 0), (1, 10, 100)]"), SV("{:#>{}}"), input, 32);
check_exception("The format string contains an invalid escape sequence", SV("{:}<}"), input);
check_exception("The fill option contains an invalid value", SV("{:{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{:0}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{:L}"), input);
// *** n
check(SV("__(42, 99, 0), (1, 10, 100)___"), SV("{:_^30n}"), input);
// *** type ***
check_exception("Type m requires a pair or a tuple with two elements", SV("{:m}"), input);
check_exception("Type s requires character type as formatting argument", SV("{:s}"), input);
check_exception("Type ?s requires character type as formatting argument", SV("{:?s}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Only underlying has a format-spec
check(SV("[(42, 99, 0) , (1, 10, 100) ]"), SV("{::14}"), input);
check(SV("[(42, 99, 0)***, (1, 10, 100)**]"), SV("{::*<14}"), input);
check(SV("[_(42, 99, 0)__, _(1, 10, 100)_]"), SV("{::_^14}"), input);
check(SV("[###(42, 99, 0), ##(1, 10, 100)]"), SV("{::#>14}"), input);
check(SV("[(42, 99, 0) , (1, 10, 100) ]"), SV("{::{}}"), input, 14);
check(SV("[(42, 99, 0)***, (1, 10, 100)**]"), SV("{::*<{}}"), input, 14);
check(SV("[_(42, 99, 0)__, _(1, 10, 100)_]"), SV("{::_^{}}"), input, 14);
check(SV("[###(42, 99, 0), ##(1, 10, 100)]"), SV("{::#>{}}"), input, 14);
check_exception("The format string contains an invalid escape sequence", SV("{::}<}"), input);
check_exception("The fill option contains an invalid value", SV("{::{<}"), input);
// *** sign ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::-}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{::+}"), input);
check_exception("The format specifier should consume the input or end with a '}'", SV("{:: }"), input);
// *** alternate form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::#}"), input);
// *** zero-padding ***
check_exception("The width option should not have a leading zero", SV("{::05}"), input);
// *** precision ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::.}"), input);
// *** locale-specific form ***
check_exception("The format specifier should consume the input or end with a '}'", SV("{::L}"), input);
// *** type ***
check(SV("[42, 99, 0, 1, 10, 100]"), SV("{::n}"), input);
for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s"))
check_exception("The format specifier should consume the input or end with a '}'", fmt, input);
// ***** Both have a format-spec
check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^37:#>14}"), input);
check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^37:#>14}"), input);
check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^{}:#>14}"), input, 37);
check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^{}:#>{}}"), input, 37, 14);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>5}"), input);
check_exception(
"The argument index value is too large for the number of arguments supplied", SV("{:^^{}:#>{}}"), input, 37);
}
//
// Ranges
//
template <class CharT, class Iterator, class TestFunction, class ExceptionTest, class Array>
void test_with_ranges_impl(TestFunction check, ExceptionTest check_exception, Array input) {
auto make_range = [](auto& in) {
std::counted_iterator it(Iterator(in.data()), in.size());
std::ranges::subrange range{std::move(it), std::default_sentinel};
return range;
};
test_int<CharT>(check, check_exception, input, make_range);
}
template <class CharT, class TestFunction, class ExceptionTest>
void test_with_ranges(TestFunction check, ExceptionTest check_exception) {
std::array input{1, 2, 42, -42};
test_with_ranges_impl<CharT, cpp20_input_iterator<int*>>(check, check_exception, input);
test_with_ranges_impl<CharT, forward_iterator<int*>>(check, check_exception, input);
test_with_ranges_impl<CharT, bidirectional_iterator<int*>>(check, check_exception, input);
test_with_ranges_impl<CharT, random_access_iterator<int*>>(check, check_exception, input);
test_with_ranges_impl<CharT, contiguous_iterator<int*>>(check, check_exception, input);
}
//
// Adaptor
//
template <class CharT>
class non_contiguous {
// A deque iterator is random access, but not contiguous.
using adaptee = std::deque<CharT>;
public:
using iterator = typename adaptee::iterator;
using pointer = typename adaptee::pointer;
iterator begin() { return data_.begin(); }
iterator end() { return data_.end(); }
explicit non_contiguous(adaptee&& data) : data_(std::move(data)) {}
private:
adaptee data_;
};
template <class CharT>
class contiguous {
// A vector iterator is contiguous.
using adaptee = std::vector<CharT>;
public:
using iterator = typename adaptee::iterator;
using pointer = typename adaptee::pointer;
iterator begin() { return data_.begin(); }
iterator end() { return data_.end(); }
explicit contiguous(adaptee&& data) : data_(std::move(data)) {}
private:
adaptee data_;
};
// This tests two different implementations in libc++. A basic_string_view
// formatter if the range is contiguous, a basic_string otherwise.
template <class CharT, class TestFunction, class ExceptionTest>
void test_adaptor(TestFunction check, ExceptionTest check_exception) {
static_assert(std::format_kind<non_contiguous<CharT>> == std::range_format::sequence);
static_assert(std::ranges::sized_range<non_contiguous<CharT>>);
static_assert(!std::ranges::contiguous_range<non_contiguous<CharT>>);
test_char_string<CharT>(
check,
check_exception,
non_contiguous<CharT>{std::deque{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')}});
static_assert(std::format_kind<contiguous<CharT>> == std::range_format::sequence);
static_assert(std::ranges::sized_range<contiguous<CharT>>);
static_assert(std::ranges::contiguous_range<contiguous<CharT>>);
test_char_string<CharT>(check,
check_exception,
contiguous<CharT>{std::vector{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')}});
}
//
// Driver
//
template <class CharT, class TestFunction, class ExceptionTest>
void format_tests(TestFunction check, ExceptionTest check_exception) {
test_char<CharT>(check, check_exception);
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
if (std::same_as<CharT, wchar_t>) // avoid testing twice
test_char_to_wchar(check, check_exception);
#endif
test_bool<CharT>(check, check_exception);
test_int<CharT>(check, check_exception);
test_floating_point<CharT>(check, check_exception);
test_pointer<CharT>(check, check_exception);
test_string<CharT>(check, check_exception);
test_status<CharT>(check, check_exception); // Has its own handler with its own parser
test_pair_tuple<CharT>(check, check_exception);
test_tuple_int<CharT>(check, check_exception);
test_tuple_int_int_int<CharT>(check, check_exception);
test_with_ranges<CharT>(check, check_exception);
test_adaptor<CharT>(check, check_exception);
}
#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
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