mirror of
https://github.com/fmtlib/fmt.git
synced 2024-11-02 20:32:49 +00:00
442 lines
15 KiB
C++
442 lines
15 KiB
C++
/*
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printf tests.
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Copyright (c) 2012-2014, Victor Zverovich
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cctype>
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#include <climits>
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#include <cstring>
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#include "format.h"
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#include "gtest-extra.h"
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#include "util.h"
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using fmt::format;
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using fmt::FormatError;
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const unsigned BIG_NUM = INT_MAX + 1u;
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// Makes format string argument positional.
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std::string make_positional(fmt::StringRef format) {
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std::string s(format);
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s.replace(s.find('%'), 1, "%1$");
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return s;
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}
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#define EXPECT_PRINTF(expected_output, format, arg) \
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EXPECT_EQ(expected_output, fmt::sprintf(format, arg)) \
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<< "format: " << format; \
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EXPECT_EQ(expected_output, fmt::sprintf(make_positional(format), arg))
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TEST(PrintfTest, NoArgs) {
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EXPECT_EQ("test", fmt::sprintf("test"));
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}
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TEST(PrintfTest, Escape) {
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EXPECT_EQ("%", fmt::sprintf("%%"));
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EXPECT_EQ("before %", fmt::sprintf("before %%"));
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EXPECT_EQ("% after", fmt::sprintf("%% after"));
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EXPECT_EQ("before % after", fmt::sprintf("before %% after"));
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EXPECT_EQ("%s", fmt::sprintf("%%s"));
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}
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TEST(PrintfTest, PositionalArgs) {
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EXPECT_EQ("42", fmt::sprintf("%1$d", 42));
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EXPECT_EQ("before 42", fmt::sprintf("before %1$d", 42));
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EXPECT_EQ("42 after", fmt::sprintf("%1$d after",42));
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EXPECT_EQ("before 42 after", fmt::sprintf("before %1$d after", 42));
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EXPECT_EQ("answer = 42", fmt::sprintf("%1$s = %2$d", "answer", 42));
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EXPECT_EQ("42 is the answer",
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fmt::sprintf("%2$d is the %1$s", "answer", 42));
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EXPECT_EQ("abracadabra", fmt::sprintf("%1$s%2$s%1$s", "abra", "cad"));
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}
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TEST(PrintfTest, AutomaticArgIndexing) {
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EXPECT_EQ("abc", fmt::sprintf("%c%c%c", 'a', 'b', 'c'));
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}
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TEST(PrintfTest, NumberIsTooBigInArgIndex) {
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EXPECT_THROW_MSG(fmt::sprintf(format("%{}$", BIG_NUM)),
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FormatError, "number is too big");
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EXPECT_THROW_MSG(fmt::sprintf(format("%{}$d", BIG_NUM)),
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FormatError, "number is too big");
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}
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TEST(PrintfTest, SwitchArgIndexing) {
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EXPECT_THROW_MSG(fmt::sprintf("%1$d%", 1, 2),
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FormatError, "invalid format string");
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EXPECT_THROW_MSG(fmt::sprintf(format("%1$d%{}d", BIG_NUM), 1, 2),
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FormatError, "number is too big");
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EXPECT_THROW_MSG(fmt::sprintf("%1$d%d", 1, 2),
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FormatError, "cannot switch from manual to automatic argument indexing");
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EXPECT_THROW_MSG(fmt::sprintf("%d%1$", 1, 2),
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FormatError, "invalid format string");
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EXPECT_THROW_MSG(fmt::sprintf(format("%d%{}$d", BIG_NUM), 1, 2),
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FormatError, "number is too big");
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EXPECT_THROW_MSG(fmt::sprintf("%d%1$d", 1, 2),
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FormatError, "cannot switch from automatic to manual argument indexing");
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// Indexing errors override width errors.
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EXPECT_THROW_MSG(fmt::sprintf(format("%d%1${}d", BIG_NUM), 1, 2),
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FormatError, "number is too big");
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EXPECT_THROW_MSG(fmt::sprintf(format("%1$d%{}d", BIG_NUM), 1, 2),
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FormatError, "number is too big");
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}
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TEST(PrintfTest, InvalidArgIndex) {
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EXPECT_THROW_MSG(fmt::sprintf("%0$d", 42), FormatError,
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"argument index out of range");
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EXPECT_THROW_MSG(fmt::sprintf("%2$d", 42), FormatError,
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"argument index out of range");
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EXPECT_THROW_MSG(fmt::sprintf(format("%{}$d", INT_MAX), 42),
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FormatError, "argument index out of range");
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EXPECT_THROW_MSG(fmt::sprintf("%2$", 42),
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FormatError, "invalid format string");
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EXPECT_THROW_MSG(fmt::sprintf(format("%{}$d", BIG_NUM), 42),
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FormatError, "number is too big");
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}
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TEST(PrintfTest, DefaultAlignRight) {
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EXPECT_PRINTF(" 42", "%5d", 42);
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EXPECT_PRINTF(" abc", "%5s", "abc");
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}
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TEST(PrintfTest, ZeroFlag) {
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EXPECT_PRINTF("00042", "%05d", 42);
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EXPECT_PRINTF("-0042", "%05d", -42);
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EXPECT_PRINTF("00042", "%05d", 42);
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EXPECT_PRINTF("-0042", "%05d", -42);
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EXPECT_PRINTF("-004.2", "%06g", -4.2);
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EXPECT_PRINTF("+00042", "%00+6d", 42);
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// '0' flag is ignored for non-numeric types.
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EXPECT_PRINTF(" x", "%05c", 'x');
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}
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TEST(PrintfTest, PlusFlag) {
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EXPECT_PRINTF("+42", "%+d", 42);
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EXPECT_PRINTF("-42", "%+d", -42);
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EXPECT_PRINTF("+0042", "%+05d", 42);
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EXPECT_PRINTF("+0042", "%0++5d", 42);
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// '+' flag is ignored for non-numeric types.
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EXPECT_PRINTF("x", "%+c", 'x');
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}
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TEST(PrintfTest, MinusFlag) {
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EXPECT_PRINTF("abc ", "%-5s", "abc");
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EXPECT_PRINTF("abc ", "%0--5s", "abc");
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}
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TEST(PrintfTest, SpaceFlag) {
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EXPECT_PRINTF(" 42", "% d", 42);
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EXPECT_PRINTF("-42", "% d", -42);
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EXPECT_PRINTF(" 0042", "% 05d", 42);
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EXPECT_PRINTF(" 0042", "%0 5d", 42);
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// ' ' flag is ignored for non-numeric types.
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EXPECT_PRINTF("x", "% c", 'x');
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}
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TEST(PrintfTest, HashFlag) {
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EXPECT_PRINTF("042", "%#o", 042);
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EXPECT_PRINTF(fmt::format("0{:o}", static_cast<unsigned>(-042)), "%#o", -042);
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EXPECT_PRINTF("0", "%#o", 0);
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EXPECT_PRINTF("0x42", "%#x", 0x42);
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EXPECT_PRINTF("0X42", "%#X", 0x42);
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EXPECT_PRINTF(
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fmt::format("0x{:x}", static_cast<unsigned>(-0x42)), "%#x", -0x42);
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EXPECT_PRINTF("0", "%#x", 0);
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EXPECT_PRINTF("0x0042", "%#06x", 0x42);
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EXPECT_PRINTF("0x0042", "%0##6x", 0x42);
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EXPECT_PRINTF("-42.000000", "%#f", -42.0);
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EXPECT_PRINTF("-42.000000", "%#F", -42.0);
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char buffer[BUFFER_SIZE];
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safe_sprintf(buffer, "%#e", -42.0);
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EXPECT_PRINTF(buffer, "%#e", -42.0);
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safe_sprintf(buffer, "%#E", -42.0);
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EXPECT_PRINTF(buffer, "%#E", -42.0);
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EXPECT_PRINTF("-42.0000", "%#g", -42.0);
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EXPECT_PRINTF("-42.0000", "%#G", -42.0);
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safe_sprintf(buffer, "%#a", 16.0);
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EXPECT_PRINTF(buffer, "%#a", 16.0);
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safe_sprintf(buffer, "%#A", 16.0);
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EXPECT_PRINTF(buffer, "%#A", 16.0);
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// '#' flag is ignored for non-numeric types.
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EXPECT_PRINTF("x", "%#c", 'x');
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}
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TEST(PrintfTest, Width) {
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EXPECT_PRINTF(" abc", "%5s", "abc");
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// Width cannot be specified twice.
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EXPECT_THROW_MSG(fmt::sprintf("%5-5d", 42), FormatError,
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"unknown format code '-' for integer");
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EXPECT_THROW_MSG(fmt::sprintf(format("%{}d", BIG_NUM), 42),
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FormatError, "number is too big");
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EXPECT_THROW_MSG(fmt::sprintf(format("%1${}d", BIG_NUM), 42),
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FormatError, "number is too big");
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}
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TEST(PrintfTest, DynamicWidth) {
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EXPECT_EQ(" 42", fmt::sprintf("%*d", 5, 42));
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EXPECT_EQ("42 ", fmt::sprintf("%*d", -5, 42));
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EXPECT_THROW_MSG(fmt::sprintf("%*d", 5.0, 42), FormatError,
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"width is not integer");
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EXPECT_THROW_MSG(fmt::sprintf("%*d"), FormatError,
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"argument index out of range");
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EXPECT_THROW_MSG(fmt::sprintf("%*d", BIG_NUM, 42), FormatError,
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"number is too big");
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}
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TEST(PrintfTest, IntPrecision) {
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EXPECT_PRINTF("00042", "%.5d", 42);
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EXPECT_PRINTF("-00042", "%.5d", -42);
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EXPECT_PRINTF("00042", "%.5x", 0x42);
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EXPECT_PRINTF("0x00042", "%#.5x", 0x42);
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EXPECT_PRINTF("00042", "%.5o", 042);
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EXPECT_PRINTF("00042", "%#.5o", 042);
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EXPECT_PRINTF(" 00042", "%7.5d", 42);
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EXPECT_PRINTF(" 00042", "%7.5x", 0x42);
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EXPECT_PRINTF(" 0x00042", "%#10.5x", 0x42);
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EXPECT_PRINTF(" 00042", "%7.5o", 042);
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EXPECT_PRINTF(" 00042", "%#10.5o", 042);
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EXPECT_PRINTF("00042 ", "%-7.5d", 42);
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EXPECT_PRINTF("00042 ", "%-7.5x", 0x42);
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EXPECT_PRINTF("0x00042 ", "%-#10.5x", 0x42);
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EXPECT_PRINTF("00042 ", "%-7.5o", 042);
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EXPECT_PRINTF("00042 ", "%-#10.5o", 042);
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}
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TEST(PrintfTest, FloatPrecision) {
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char buffer[BUFFER_SIZE];
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safe_sprintf(buffer, "%.3e", 1234.5678);
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EXPECT_PRINTF(buffer, "%.3e", 1234.5678);
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EXPECT_PRINTF("1234.568", "%.3f", 1234.5678);
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safe_sprintf(buffer, "%.3g", 1234.5678);
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EXPECT_PRINTF(buffer, "%.3g", 1234.5678);
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safe_sprintf(buffer, "%.3a", 1234.5678);
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EXPECT_PRINTF(buffer, "%.3a", 1234.5678);
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}
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TEST(PrintfTest, IgnorePrecisionForNonNumericArg) {
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EXPECT_PRINTF("abc", "%.5s", "abc");
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}
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TEST(PrintfTest, DynamicPrecision) {
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EXPECT_EQ("00042", fmt::sprintf("%.*d", 5, 42));
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EXPECT_EQ("42", fmt::sprintf("%.*d", -5, 42));
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EXPECT_THROW_MSG(fmt::sprintf("%.*d", 5.0, 42), FormatError,
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"precision is not integer");
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EXPECT_THROW_MSG(fmt::sprintf("%.*d"), FormatError,
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"argument index out of range");
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EXPECT_THROW_MSG(fmt::sprintf("%.*d", BIG_NUM, 42), FormatError,
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"number is too big");
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if (sizeof(fmt::LongLong) != sizeof(int)) {
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fmt::LongLong prec = static_cast<fmt::LongLong>(INT_MIN) - 1;
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EXPECT_THROW_MSG(fmt::sprintf("%.*d", prec, 42), FormatError,
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"number is too big");
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}
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}
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template <typename T>
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struct MakeSigned { typedef T Type; };
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#define SPECIALIZE_MAKE_SIGNED(T, S) \
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template <> \
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struct MakeSigned<T> { typedef S Type; }
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SPECIALIZE_MAKE_SIGNED(char, signed char);
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SPECIALIZE_MAKE_SIGNED(unsigned char, signed char);
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SPECIALIZE_MAKE_SIGNED(unsigned short, short);
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SPECIALIZE_MAKE_SIGNED(unsigned, int);
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SPECIALIZE_MAKE_SIGNED(unsigned long, long);
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SPECIALIZE_MAKE_SIGNED(fmt::ULongLong, fmt::LongLong);
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template <typename T, typename U>
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void TestLength(const char *length_spec, U value) {
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fmt::LongLong signed_value = value;
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fmt::ULongLong unsigned_value = value;
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// Apply integer promotion to the argument.
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fmt::ULongLong max = std::numeric_limits<U>::max();
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if (max <= static_cast<unsigned>(std::numeric_limits<int>::max())) {
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signed_value = static_cast<int>(value);
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unsigned_value = static_cast<int>(value);
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} else if (max <= std::numeric_limits<unsigned>::max()) {
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signed_value = static_cast<unsigned>(value);
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unsigned_value = static_cast<unsigned>(value);
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}
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using fmt::internal::MakeUnsigned;
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if (sizeof(U) <= sizeof(int) && sizeof(int) < sizeof(T)) {
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signed_value = unsigned_value =
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static_cast<typename MakeUnsigned<unsigned>::Type>(value);
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} else {
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signed_value = static_cast<typename MakeSigned<T>::Type>(value);
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unsigned_value = static_cast<typename MakeUnsigned<T>::Type>(value);
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}
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std::ostringstream os;
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os << signed_value;
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EXPECT_PRINTF(os.str(), fmt::format("%{}d", length_spec), value);
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EXPECT_PRINTF(os.str(), fmt::format("%{}i", length_spec), value);
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os.str("");
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os << unsigned_value;
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EXPECT_PRINTF(os.str(), fmt::format("%{}u", length_spec), value);
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os.str("");
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os << std::oct << unsigned_value;
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EXPECT_PRINTF(os.str(), fmt::format("%{}o", length_spec), value);
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os.str("");
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os << std::hex << unsigned_value;
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EXPECT_PRINTF(os.str(), fmt::format("%{}x", length_spec), value);
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os.str("");
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os << std::hex << std::uppercase << unsigned_value;
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EXPECT_PRINTF(os.str(), fmt::format("%{}X", length_spec), value);
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}
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template <typename T>
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void TestLength(const char *length_spec) {
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T min = std::numeric_limits<T>::min(), max = std::numeric_limits<T>::max();
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TestLength<T>(length_spec, 42);
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TestLength<T>(length_spec, -42);
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TestLength<T>(length_spec, min);
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TestLength<T>(length_spec, max);
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if (min >= 0 || static_cast<fmt::LongLong>(min) >
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std::numeric_limits<fmt::LongLong>::min()) {
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TestLength<T>(length_spec, fmt::LongLong(min) - 1);
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}
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fmt::ULongLong long_long_max = std::numeric_limits<fmt::LongLong>::max();
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if (max < 0 || static_cast<fmt::ULongLong>(max) < long_long_max)
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TestLength<T>(length_spec, fmt::LongLong(max) + 1);
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TestLength<T>(length_spec, std::numeric_limits<short>::min());
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TestLength<T>(length_spec, std::numeric_limits<unsigned short>::max());
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TestLength<T>(length_spec, std::numeric_limits<int>::min());
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TestLength<T>(length_spec, std::numeric_limits<int>::max());
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TestLength<T>(length_spec, std::numeric_limits<unsigned>::min());
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TestLength<T>(length_spec, std::numeric_limits<unsigned>::max());
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TestLength<T>(length_spec, std::numeric_limits<fmt::LongLong>::min());
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TestLength<T>(length_spec, std::numeric_limits<fmt::LongLong>::max());
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TestLength<T>(length_spec, std::numeric_limits<fmt::ULongLong>::min());
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TestLength<T>(length_spec, std::numeric_limits<fmt::ULongLong>::max());
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}
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TEST(PrintfTest, Length) {
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TestLength<char>("hh");
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TestLength<signed char>("hh");
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TestLength<unsigned char>("hh");
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TestLength<short>("h");
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TestLength<unsigned short>("h");
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TestLength<long>("l");
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TestLength<unsigned long>("l");
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TestLength<fmt::LongLong>("ll");
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TestLength<fmt::ULongLong>("ll");
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TestLength<intmax_t>("j");
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TestLength<std::size_t>("z");
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TestLength<std::ptrdiff_t>("t");
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long double max = std::numeric_limits<long double>::max();
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EXPECT_PRINTF(fmt::format("{}", max), "%g", max);
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EXPECT_PRINTF(fmt::format("{}", max), "%Lg", max);
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}
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TEST(PrintfTest, Int) {
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EXPECT_PRINTF("-42", "%d", -42);
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EXPECT_PRINTF("-42", "%i", -42);
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unsigned u = -42;
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EXPECT_PRINTF(fmt::format("{}", u), "%u", -42);
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EXPECT_PRINTF(fmt::format("{:o}", u), "%o", -42);
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EXPECT_PRINTF(fmt::format("{:x}", u), "%x", -42);
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EXPECT_PRINTF(fmt::format("{:X}", u), "%X", -42);
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}
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TEST(PrintfTest, Float) {
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EXPECT_PRINTF("392.650000", "%f", 392.65);
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EXPECT_PRINTF("392.650000", "%F", 392.65);
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char buffer[BUFFER_SIZE];
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safe_sprintf(buffer, "%e", 392.65);
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EXPECT_PRINTF(buffer, "%e", 392.65);
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safe_sprintf(buffer, "%E", 392.65);
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EXPECT_PRINTF(buffer, "%E", 392.65);
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EXPECT_PRINTF("392.65", "%g", 392.65);
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EXPECT_PRINTF("392.65", "%G", 392.65);
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safe_sprintf(buffer, "%a", -392.65);
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EXPECT_EQ(buffer, format("{:a}", -392.65));
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safe_sprintf(buffer, "%A", -392.65);
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EXPECT_EQ(buffer, format("{:A}", -392.65));
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}
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TEST(PrintfTest, Inf) {
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double inf = std::numeric_limits<double>::infinity();
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for (const char* type = "fega"; *type; ++type) {
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EXPECT_PRINTF("inf", fmt::format("%{}", *type), inf);
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char upper = std::toupper(*type);
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EXPECT_PRINTF("INF", fmt::format("%{}", upper), inf);
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}
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}
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TEST(PrintfTest, Char) {
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EXPECT_PRINTF("x", "%c", 'x');
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int max = std::numeric_limits<int>::max();
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EXPECT_PRINTF(fmt::format("{}", static_cast<char>(max)), "%c", max);
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//EXPECT_PRINTF("x", "%lc", L'x');
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// TODO: test wchar_t
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}
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TEST(PrintfTest, String) {
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|
EXPECT_PRINTF("abc", "%s", "abc");
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|
// TODO: wide string
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|
}
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|
|
|
TEST(PrintfTest, Pointer) {
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|
int n;
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|
void *p = &n;
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|
EXPECT_PRINTF(fmt::format("{}", p), "%p", p);
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|
}
|
|
|
|
TEST(PrintfTest, Location) {
|
|
// TODO: test %n
|
|
}
|
|
|
|
#if FMT_USE_FILE_DESCRIPTORS
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|
TEST(PrintfTest, Examples) {
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|
const char *weekday = "Thursday";
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|
const char *month = "August";
|
|
int day = 21;
|
|
EXPECT_WRITE(stdout, fmt::printf("%1$s, %3$d %2$s", weekday, month, day),
|
|
"Thursday, 21 August");
|
|
}
|
|
#endif
|