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format_test.cc
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/*
Formatting library tests.
Copyright (c) 2012, Victor Zverovich
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <cctype>
#include <cfloat>
#include <climits>
#include <cstdarg>
#include <cstring>
#include <iomanip>
#include <memory>
#include <sstream>
#include <gtest/gtest.h>
// Check if format.h compiles with windows.h included.
#ifdef WIN32
# include <windows.h>
#endif
#include "format.h"
#include <stdint.h>
#undef min
#undef max
using std::size_t;
using fmt::internal::Array;
using fmt::BasicWriter;
using fmt::Format;
using fmt::FormatError;
using fmt::StringRef;
using fmt::Writer;
using fmt::pad;
#define FORMAT_TEST_THROW_(statement, expected_exception, message, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (::testing::internal::ConstCharPtr gtest_msg = "") { \
bool gtest_caught_expected = false; \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (expected_exception const& e) { \
gtest_caught_expected = true; \
if (std::strcmp(message, e.what()) != 0) \
throw; \
} \
catch (...) { \
gtest_msg.value = \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws a different type."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
if (!gtest_caught_expected) { \
gtest_msg.value = \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws nothing."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
fail(gtest_msg.value)
#define EXPECT_THROW_MSG(statement, expected_exception, expected_message) \
FORMAT_TEST_THROW_(statement, expected_exception, expected_message, \
GTEST_NONFATAL_FAILURE_)
// Checks if writing value to BasicWriter<Char> produces the same result
// as writing it to std::basic_ostringstream<Char>.
template <typename Char, typename T>
static ::testing::AssertionResult CheckWrite(const T &value, const char *type) {
std::basic_ostringstream<Char> os;
os << value;
std::basic_string<Char> expected = os.str();
std::basic_string<Char> actual = str(BasicWriter<Char>() << value);
if (expected == actual)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure()
<< "Value of: str(Writer<" << type << ">() << value)\n"
<< " Actual: " << actual << "\n"
<< "Expected: " << expected << "\n";
}
struct AnyWriteChecker {
template <typename T>
::testing::AssertionResult operator()(const char *, const T &value) const {
::testing::AssertionResult result = CheckWrite<char>(value, "char");
return result ? CheckWrite<wchar_t>(value, "wchar_t") : result;
}
};
struct CharWriteChecker {
template <typename T>
::testing::AssertionResult operator()(const char *, const T &value) const {
return CheckWrite<char>(value, "char");
}
};
struct WCharWriteChecker {
template <typename T>
::testing::AssertionResult operator()(const char *, const T &value) const {
return CheckWrite<wchar_t>(value, "char");
}
};
// Checks if writing value to BasicWriter produces the same result
// as writing it to std::ostringstream both for char and wchar_t.
#define CHECK_WRITE(value) ASSERT_PRED_FORMAT1(AnyWriteChecker(), value)
#define CHECK_WRITE_CHAR(value) ASSERT_PRED_FORMAT1(CharWriteChecker(), value)
#define CHECK_WRITE_WCHAR(value) ASSERT_PRED_FORMAT1(WCharWriteChecker(), value)
// Increment a number in a string.
void Increment(char *s) {
for (int i = static_cast<int>(std::strlen(s)) - 1; i >= 0; --i) {
if (s[i] != '9') {
++s[i];
break;
}
s[i] = '0';
}
}
enum {BUFFER_SIZE = 256};
#ifdef _MSC_VER
# define vsnprintf vsprintf_s
#endif
void SPrintf(char *buffer, const char *format, ...) {
std::va_list args;
va_start(args, format);
vsnprintf(buffer, BUFFER_SIZE, format, args);
va_end(args);
}
TEST(UtilTest, Increment) {
char s[10] = "123";
Increment(s);
EXPECT_STREQ("124", s);
s[2] = '8';
Increment(s);
EXPECT_STREQ("129", s);
Increment(s);
EXPECT_STREQ("130", s);
s[1] = s[2] = '9';
Increment(s);
EXPECT_STREQ("200", s);
}
class TestString {
private:
std::string value_;
public:
explicit TestString(const char *value = "") : value_(value) {}
friend std::ostream &operator<<(std::ostream &os, const TestString &s) {
os << s.value_;
return os;
}
};
TEST(ArrayTest, Ctor) {
Array<char, 123> array;
EXPECT_EQ(0u, array.size());
EXPECT_EQ(123u, array.capacity());
}
TEST(ArrayTest, Access) {
Array<char, 10> array;
array[0] = 11;
EXPECT_EQ(11, array[0]);
array[3] = 42;
EXPECT_EQ(42, *(&array[0] + 3));
const Array<char, 10> &carray = array;
EXPECT_EQ(42, carray[3]);
}
TEST(ArrayTest, Resize) {
Array<char, 123> array;
array[10] = 42;
EXPECT_EQ(42, array[10]);
array.resize(20);
EXPECT_EQ(20u, array.size());
EXPECT_EQ(123u, array.capacity());
EXPECT_EQ(42, array[10]);
array.resize(5);
EXPECT_EQ(5u, array.size());
EXPECT_EQ(123u, array.capacity());
EXPECT_EQ(42, array[10]);
}
TEST(ArrayTest, Grow) {
Array<int, 10> array;
array.resize(10);
for (int i = 0; i < 10; ++i)
array[i] = i * i;
array.resize(20);
EXPECT_EQ(20u, array.size());
EXPECT_EQ(20u, array.capacity());
for (int i = 0; i < 10; ++i)
EXPECT_EQ(i * i, array[i]);
}
TEST(ArrayTest, Clear) {
Array<char, 10> array;
array.resize(20);
array.clear();
EXPECT_EQ(0u, array.size());
EXPECT_EQ(20u, array.capacity());
}
TEST(ArrayTest, PushBack) {
Array<int, 10> array;
array.push_back(11);
EXPECT_EQ(11, array[0]);
EXPECT_EQ(1u, array.size());
array.resize(10);
array.push_back(22);
EXPECT_EQ(22, array[10]);
EXPECT_EQ(11u, array.size());
EXPECT_EQ(15u, array.capacity());
}
TEST(ArrayTest, Append) {
Array<char, 10> array;
const char *test = "test";
array.append(test, test + 5);
EXPECT_STREQ("test", &array[0]);
EXPECT_EQ(5u, array.size());
array.resize(10);
array.append(test, test + 2);
EXPECT_EQ('t', array[10]);
EXPECT_EQ('e', array[11]);
EXPECT_EQ(12u, array.size());
EXPECT_EQ(15u, array.capacity());
}
TEST(WriterTest, Ctor) {
Writer w;
EXPECT_EQ(0u, w.size());
EXPECT_STREQ("", w.c_str());
EXPECT_EQ("", w.str());
}
TEST(WriterTest, Data) {
Writer w;
w << 42;
EXPECT_EQ("42", std::string(w.data(), w.size()));
}
TEST(WriterTest, WriteInt) {
CHECK_WRITE(42);
CHECK_WRITE(-42);
CHECK_WRITE(static_cast<short>(12));
CHECK_WRITE(34u);
CHECK_WRITE(std::numeric_limits<int>::min());
CHECK_WRITE(std::numeric_limits<int>::max());
CHECK_WRITE(std::numeric_limits<unsigned>::max());
}
TEST(WriterTest, WriteLong) {
CHECK_WRITE(56l);
CHECK_WRITE(78ul);
CHECK_WRITE(std::numeric_limits<long>::min());
CHECK_WRITE(std::numeric_limits<long>::max());
CHECK_WRITE(std::numeric_limits<unsigned long>::max());
}
TEST(WriterTest, WriteLongLong) {
CHECK_WRITE(56ll);
CHECK_WRITE(78ull);
CHECK_WRITE(std::numeric_limits<long long>::min());
CHECK_WRITE(std::numeric_limits<long long>::max());
CHECK_WRITE(std::numeric_limits<unsigned long long>::max());
}
TEST(WriterTest, WriteDouble) {
CHECK_WRITE(4.2);
CHECK_WRITE(-4.2);
CHECK_WRITE(4.2l);
}
TEST(WriterTest, WriteChar) {
CHECK_WRITE('a');
}
TEST(WriterTest, WriteString) {
CHECK_WRITE_CHAR("abc");
// The following line shouldn't compile:
//fmt::Writer() << L"abc";
}
TEST(WriterTest, WriteWideString) {
CHECK_WRITE_WCHAR(L"abc");
// The following line shouldn't compile:
//fmt::WWriter() << "abc";
}
TEST(WriterTest, oct) {
using fmt::oct;
EXPECT_EQ("12", str(Writer() << oct(static_cast<short>(012))));
EXPECT_EQ("12", str(Writer() << oct(012)));
EXPECT_EQ("34", str(Writer() << oct(034u)));
EXPECT_EQ("56", str(Writer() << oct(056l)));
EXPECT_EQ("70", str(Writer() << oct(070ul)));
}
TEST(WriterTest, bin) {
using fmt::bin;
EXPECT_EQ("1100101011111110", str(Writer() << bin(0xcafe)));
EXPECT_EQ("1011101010111110", str(Writer() << bin(0xbabeu)));
EXPECT_EQ("1101111010101101", str(Writer() << bin(0xdeadl)));
EXPECT_EQ("1011111011101111", str(Writer() << bin(0xbeeful)));
EXPECT_EQ("1111111111111111111111111111111111111111111111111111111111111111", str(Writer() << bin(0xffffffffffffffffull)));
}
TEST(WriterTest, hex) {
using fmt::hex;
fmt::IntFormatter<int, fmt::TypeSpec<'x'> > (*phex)(int value) = hex;
phex(42);
// This shouldn't compile:
//fmt::IntFormatter<short, fmt::TypeSpec<'x'> > (*phex2)(short value) = hex;
EXPECT_EQ("cafe", str(Writer() << hex(0xcafe)));
EXPECT_EQ("babe", str(Writer() << hex(0xbabeu)));
EXPECT_EQ("dead", str(Writer() << hex(0xdeadl)));
EXPECT_EQ("beef", str(Writer() << hex(0xbeeful)));
EXPECT_EQ("beefbeefbeefbeef", str(Writer() << hex(0xbeefbeefbeefbeefull)));
EXPECT_EQ("ffffffffffffffff", str(Writer() << hex(0xffffffffffffffffull)));
}
TEST(WriterTest, hexu) {
using fmt::hexu;
EXPECT_EQ("CAFE", str(Writer() << hexu(0xcafe)));
EXPECT_EQ("BABE", str(Writer() << hexu(0xbabeu)));
EXPECT_EQ("DEAD", str(Writer() << hexu(0xdeadl)));
EXPECT_EQ("BEEF", str(Writer() << hexu(0xbeeful)));
EXPECT_EQ("FFFFFFFFFFFFFFFF", str(Writer() << hexu(0xffffffffffffffffull)));
}
class Date {
int year_, month_, day_;
public:
Date(int year, int month, int day) : year_(year), month_(month), day_(day) {}
int year() const { return year_; }
int month() const { return month_; }
int day() const { return day_; }
friend std::ostream &operator<<(std::ostream &os, const Date &d) {
os << d.year_ << '-' << d.month_ << '-' << d.day_;
return os;
}
template <typename Char>
friend BasicWriter<Char> &operator<<(BasicWriter<Char> &f, const Date &d) {
return f << d.year_ << '-' << d.month_ << '-' << d.day_;
}
};
class ISO8601DateFormatter {
const Date *date_;
public:
ISO8601DateFormatter(const Date &d) : date_(&d) {}
template <typename Char>
friend BasicWriter<Char> &operator<<(
BasicWriter<Char> &w, const ISO8601DateFormatter &d) {
return w << pad(d.date_->year(), 4, '0') << '-'
<< pad(d.date_->month(), 2, '0') << '-' << pad(d.date_->day(), 2, '0');
}
};
ISO8601DateFormatter iso8601(const Date &d) { return ISO8601DateFormatter(d); }
TEST(WriterTest, pad) {
using fmt::hex;
EXPECT_EQ(" cafe", str(Writer() << pad(hex(0xcafe), 8)));
EXPECT_EQ(" babe", str(Writer() << pad(hex(0xbabeu), 8)));
EXPECT_EQ(" dead", str(Writer() << pad(hex(0xdeadl), 8)));
EXPECT_EQ(" beef", str(Writer() << pad(hex(0xbeeful), 8)));
EXPECT_EQ(" 11", str(Writer() << pad(11, 7)));
EXPECT_EQ(" 22", str(Writer() << pad(22u, 7)));
EXPECT_EQ(" 33", str(Writer() << pad(33l, 7)));
EXPECT_EQ(" 44", str(Writer() << pad(44lu, 7)));
BasicWriter<char> f;
f.Clear();
f << pad(42, 5, '0');
EXPECT_EQ("00042", f.str());
f.Clear();
f << Date(2012, 12, 9);
EXPECT_EQ("2012-12-9", f.str());
f.Clear();
f << iso8601(Date(2012, 1, 9));
EXPECT_EQ("2012-01-09", f.str());
}
TEST(WriterTest, NoConflictWithIOManip) {
using namespace std;
using namespace fmt;
EXPECT_EQ("cafe", str(Writer() << hex(0xcafe)));
EXPECT_EQ("12", str(Writer() << oct(012)));
}
TEST(WriterTest, Format) {
Writer w;
w.Format("part{0}") << 1;
EXPECT_EQ(strlen("part1"), w.size());
EXPECT_STREQ("part1", w.c_str());
EXPECT_STREQ("part1", w.data());
EXPECT_EQ("part1", w.str());
w.Format("part{0}") << 2;
EXPECT_EQ(strlen("part1part2"), w.size());
EXPECT_STREQ("part1part2", w.c_str());
EXPECT_STREQ("part1part2", w.data());
EXPECT_EQ("part1part2", w.str());
}
TEST(WriterTest, WWriter) {
EXPECT_EQ(L"cafe", str(fmt::WWriter() << fmt::hex(0xcafe)));
}
TEST(FormatterTest, Escape) {
EXPECT_EQ("{", str(Format("{{")));
EXPECT_EQ("before {", str(Format("before {{")));
EXPECT_EQ("{ after", str(Format("{{ after")));
EXPECT_EQ("before { after", str(Format("before {{ after")));
EXPECT_EQ("}", str(Format("}}")));
EXPECT_EQ("before }", str(Format("before }}")));
EXPECT_EQ("} after", str(Format("}} after")));
EXPECT_EQ("before } after", str(Format("before }} after")));
EXPECT_EQ("{}", str(Format("{{}}")));
EXPECT_EQ("{42}", str(Format("{{{0}}}") << 42));
}
TEST(FormatterTest, UnmatchedBraces) {
EXPECT_THROW_MSG(Format("{"), FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("}"), FormatError, "unmatched '}' in format");
EXPECT_THROW_MSG(Format("{0{}"), FormatError, "unmatched '{' in format");
}
TEST(FormatterTest, NoArgs) {
EXPECT_EQ("test", str(Format("test")));
}
TEST(FormatterTest, ArgsInDifferentPositions) {
EXPECT_EQ("42", str(Format("{0}") << 42));
EXPECT_EQ("before 42", str(Format("before {0}") << 42));
EXPECT_EQ("42 after", str(Format("{0} after") << 42));
EXPECT_EQ("before 42 after", str(Format("before {0} after") << 42));
EXPECT_EQ("answer = 42", str(Format("{0} = {1}") << "answer" << 42));
EXPECT_EQ("42 is the answer",
str(Format("{1} is the {0}") << "answer" << 42));
EXPECT_EQ("abracadabra", str(Format("{0}{1}{0}") << "abra" << "cad"));
}
TEST(FormatterTest, ArgErrors) {
EXPECT_THROW_MSG(Format("{"), FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{x}"), FormatError,
"invalid argument index in format string");
EXPECT_THROW_MSG(Format("{0"), FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0}"), FormatError,
"argument index is out of range in format");
char format[BUFFER_SIZE];
SPrintf(format, "{%u", UINT_MAX);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
SPrintf(format, "{%u}", UINT_MAX);
EXPECT_THROW_MSG(Format(format), FormatError,
"argument index is out of range in format");
SPrintf(format, "{%u", UINT_MAX);
Increment(format + 1);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
std::size_t size = std::strlen(format);
format[size] = '}';
format[size + 1] = 0;
EXPECT_THROW_MSG(Format(format), FormatError, "number is too big in format");
}
TEST(FormatterTest, AutoArgIndex) {
EXPECT_EQ("abc", str(Format("{}{}{}") << 'a' << 'b' << 'c'));
EXPECT_THROW_MSG(Format("{0}{}") << 'a' << 'b',
FormatError, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(Format("{}{0}") << 'a' << 'b',
FormatError, "cannot switch from automatic to manual argument indexing");
EXPECT_EQ("1.2", str(Format("{:.{}}") << 1.2345 << 2));
EXPECT_THROW_MSG(Format("{0}:.{}") << 1.2345 << 2,
FormatError, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(Format("{:.{0}}") << 1.2345 << 2,
FormatError, "cannot switch from automatic to manual argument indexing");
EXPECT_THROW_MSG(Format("{}"), FormatError,
"argument index is out of range in format");
}
TEST(FormatterTest, EmptySpecs) {
EXPECT_EQ("42", str(Format("{0:}") << 42));
}
TEST(FormatterTest, LeftAlign) {
EXPECT_EQ("42 ", str(Format("{0:<4}") << 42));
EXPECT_EQ("42 ", str(Format("{0:<4o}") << 042));
EXPECT_EQ("42 ", str(Format("{0:<4x}") << 0x42));
EXPECT_EQ("-42 ", str(Format("{0:<5}") << -42));
EXPECT_EQ("42 ", str(Format("{0:<5}") << 42u));
EXPECT_EQ("-42 ", str(Format("{0:<5}") << -42l));
EXPECT_EQ("42 ", str(Format("{0:<5}") << 42ul));
EXPECT_EQ("-42 ", str(Format("{0:<5}") << -42.0));
EXPECT_EQ("-42 ", str(Format("{0:<5}") << -42.0l));
EXPECT_EQ("c ", str(Format("{0:<5}") << 'c'));
EXPECT_EQ("abc ", str(Format("{0:<5}") << "abc"));
EXPECT_EQ("0xface ",
str(Format("{0:<8}") << reinterpret_cast<void*>(0xface)));
EXPECT_EQ("def ", str(Format("{0:<5}") << TestString("def")));
}
TEST(FormatterTest, RightAlign) {
EXPECT_EQ(" 42", str(Format("{0:>4}") << 42));
EXPECT_EQ(" 42", str(Format("{0:>4o}") << 042));
EXPECT_EQ(" 42", str(Format("{0:>4x}") << 0x42));
EXPECT_EQ(" -42", str(Format("{0:>5}") << -42));
EXPECT_EQ(" 42", str(Format("{0:>5}") << 42u));
EXPECT_EQ(" -42", str(Format("{0:>5}") << -42l));
EXPECT_EQ(" 42", str(Format("{0:>5}") << 42ul));
EXPECT_EQ(" -42", str(Format("{0:>5}") << -42.0));
EXPECT_EQ(" -42", str(Format("{0:>5}") << -42.0l));
EXPECT_EQ(" c", str(Format("{0:>5}") << 'c'));
EXPECT_EQ(" abc", str(Format("{0:>5}") << "abc"));
EXPECT_EQ(" 0xface",
str(Format("{0:>8}") << reinterpret_cast<void*>(0xface)));
EXPECT_EQ(" def", str(Format("{0:>5}") << TestString("def")));
}
TEST(FormatterTest, NumericAlign) {
EXPECT_EQ(" 42", str(Format("{0:=4}") << 42));
EXPECT_EQ("+ 42", str(Format("{0:=+4}") << 42));
EXPECT_EQ(" 42", str(Format("{0:=4o}") << 042));
EXPECT_EQ("+ 42", str(Format("{0:=+4o}") << 042));
EXPECT_EQ(" 42", str(Format("{0:=4x}") << 0x42));
EXPECT_EQ("+ 42", str(Format("{0:=+4x}") << 0x42));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42));
EXPECT_EQ(" 42", str(Format("{0:=5}") << 42u));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42l));
EXPECT_EQ(" 42", str(Format("{0:=5}") << 42ul));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42.0));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42.0l));
EXPECT_THROW_MSG(Format("{0:=5") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:=5}") << 'c',
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=5}") << "abc",
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=8}") << reinterpret_cast<void*>(0xface),
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=5}") << TestString("def"),
FormatError, "format specifier '=' requires numeric argument");
}
TEST(FormatterTest, CenterAlign) {
EXPECT_EQ(" 42 ", str(Format("{0:^5}") << 42));
EXPECT_EQ(" 42 ", str(Format("{0:^5o}") << 042));
EXPECT_EQ(" 42 ", str(Format("{0:^5x}") << 0x42));
EXPECT_EQ(" -42 ", str(Format("{0:^5}") << -42));
EXPECT_EQ(" 42 ", str(Format("{0:^5}") << 42u));
EXPECT_EQ(" -42 ", str(Format("{0:^5}") << -42l));
EXPECT_EQ(" 42 ", str(Format("{0:^5}") << 42ul));
EXPECT_EQ(" -42 ", str(Format("{0:^6}") << -42.0));
EXPECT_EQ(" -42 ", str(Format("{0:^5}") << -42.0l));
EXPECT_EQ(" c ", str(Format("{0:^5}") << 'c'));
EXPECT_EQ(" abc ", str(Format("{0:^6}") << "abc"));
EXPECT_EQ(" 0xface ",
str(Format("{0:^8}") << reinterpret_cast<void*>(0xface)));
EXPECT_EQ(" def ", str(Format("{0:^5}") << TestString("def")));
}
TEST(FormatterTest, Fill) {
EXPECT_THROW_MSG(Format("{0:{<5}") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:{<5}}") << 'c',
FormatError, "invalid fill character '{'");
EXPECT_EQ("**42", str(Format("{0:*>4}") << 42));
EXPECT_EQ("**-42", str(Format("{0:*>5}") << -42));
EXPECT_EQ("***42", str(Format("{0:*>5}") << 42u));
EXPECT_EQ("**-42", str(Format("{0:*>5}") << -42l));
EXPECT_EQ("***42", str(Format("{0:*>5}") << 42ul));
EXPECT_EQ("**-42", str(Format("{0:*>5}") << -42.0));
EXPECT_EQ("**-42", str(Format("{0:*>5}") << -42.0l));
EXPECT_EQ("c****", str(Format("{0:*<5}") << 'c'));
EXPECT_EQ("abc**", str(Format("{0:*<5}") << "abc"));
EXPECT_EQ("**0xface", str(Format("{0:*>8}")
<< reinterpret_cast<void*>(0xface)));
EXPECT_EQ("def**", str(Format("{0:*<5}") << TestString("def")));
}
TEST(FormatterTest, PlusSign) {
EXPECT_EQ("+42", str(Format("{0:+}") << 42));
EXPECT_EQ("-42", str(Format("{0:+}") << -42));
EXPECT_EQ("+42", str(Format("{0:+}") << 42));
EXPECT_THROW_MSG(Format("{0:+}") << 42u,
FormatError, "format specifier '+' requires signed argument");
EXPECT_EQ("+42", str(Format("{0:+}") << 42l));
EXPECT_THROW_MSG(Format("{0:+}") << 42ul,
FormatError, "format specifier '+' requires signed argument");
EXPECT_EQ("+42", str(Format("{0:+}") << 42.0));
EXPECT_EQ("+42", str(Format("{0:+}") << 42.0l));
EXPECT_THROW_MSG(Format("{0:+") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:+}") << 'c',
FormatError, "format specifier '+' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:+}") << "abc",
FormatError, "format specifier '+' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:+}") << reinterpret_cast<void*>(0x42),
FormatError, "format specifier '+' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:+}") << TestString(),
FormatError, "format specifier '+' requires numeric argument");
}
TEST(FormatterTest, MinusSign) {
EXPECT_EQ("42", str(Format("{0:-}") << 42));
EXPECT_EQ("-42", str(Format("{0:-}") << -42));
EXPECT_EQ("42", str(Format("{0:-}") << 42));
EXPECT_THROW_MSG(Format("{0:-}") << 42u,
FormatError, "format specifier '-' requires signed argument");
EXPECT_EQ("42", str(Format("{0:-}") << 42l));
EXPECT_THROW_MSG(Format("{0:-}") << 42ul,
FormatError, "format specifier '-' requires signed argument");
EXPECT_EQ("42", str(Format("{0:-}") << 42.0));
EXPECT_EQ("42", str(Format("{0:-}") << 42.0l));
EXPECT_THROW_MSG(Format("{0:-") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:-}") << 'c',
FormatError, "format specifier '-' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:-}") << "abc",
FormatError, "format specifier '-' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:-}") << reinterpret_cast<void*>(0x42),
FormatError, "format specifier '-' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:-}") << TestString(),
FormatError, "format specifier '-' requires numeric argument");
}
TEST(FormatterTest, SpaceSign) {
EXPECT_EQ(" 42", str(Format("{0: }") << 42));
EXPECT_EQ("-42", str(Format("{0: }") << -42));
EXPECT_EQ(" 42", str(Format("{0: }") << 42));
EXPECT_THROW_MSG(Format("{0: }") << 42u,
FormatError, "format specifier ' ' requires signed argument");
EXPECT_EQ(" 42", str(Format("{0: }") << 42l));
EXPECT_THROW_MSG(Format("{0: }") << 42ul,
FormatError, "format specifier ' ' requires signed argument");
EXPECT_EQ(" 42", str(Format("{0: }") << 42.0));
EXPECT_EQ(" 42", str(Format("{0: }") << 42.0l));
EXPECT_THROW_MSG(Format("{0: ") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0: }") << 'c',
FormatError, "format specifier ' ' requires numeric argument");
EXPECT_THROW_MSG(Format("{0: }") << "abc",
FormatError, "format specifier ' ' requires numeric argument");
EXPECT_THROW_MSG(Format("{0: }") << reinterpret_cast<void*>(0x42),
FormatError, "format specifier ' ' requires numeric argument");
EXPECT_THROW_MSG(Format("{0: }") << TestString(),
FormatError, "format specifier ' ' requires numeric argument");
}
TEST(FormatterTest, HashFlag) {
EXPECT_EQ("42", str(Format("{0:#}") << 42));
EXPECT_EQ("-42", str(Format("{0:#}") << -42));
EXPECT_EQ("0x42", str(Format("{0:#x}") << 0x42));
EXPECT_EQ("-0x42", str(Format("{0:#x}") << -0x42));
EXPECT_EQ("042", str(Format("{0:#o}") << 042));
EXPECT_EQ("-042", str(Format("{0:#o}") << -042));
EXPECT_EQ("42", str(Format("{0:#}") << 42u));
EXPECT_EQ("0x42", str(Format("{0:#x}") << 0x42u));
EXPECT_EQ("042", str(Format("{0:#o}") << 042u));
EXPECT_EQ("-42", str(Format("{0:#}") << -42l));
EXPECT_EQ("0x42", str(Format("{0:#x}") << 0x42l));
EXPECT_EQ("-0x42", str(Format("{0:#x}") << -0x42l));
EXPECT_EQ("042", str(Format("{0:#o}") << 042l));
EXPECT_EQ("-042", str(Format("{0:#o}") << -042l));
EXPECT_EQ("42", str(Format("{0:#}") << 42ul));
EXPECT_EQ("0x42", str(Format("{0:#x}") << 0x42ul));
EXPECT_EQ("042", str(Format("{0:#o}") << 042ul));
EXPECT_EQ("-42.0000", str(Format("{0:#}") << -42.0));
EXPECT_EQ("-42.0000", str(Format("{0:#}") << -42.0l));
EXPECT_THROW_MSG(Format("{0:#") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:#}") << 'c',
FormatError, "format specifier '#' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:#}") << "abc",
FormatError, "format specifier '#' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:#}") << reinterpret_cast<void*>(0x42),
FormatError, "format specifier '#' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:#}") << TestString(),
FormatError, "format specifier '#' requires numeric argument");
}
TEST(FormatterTest, ZeroFlag) {
EXPECT_EQ("42", str(Format("{0:0}") << 42));
EXPECT_EQ("-0042", str(Format("{0:05}") << -42));
EXPECT_EQ("00042", str(Format("{0:05}") << 42u));
EXPECT_EQ("-0042", str(Format("{0:05}") << -42l));
EXPECT_EQ("00042", str(Format("{0:05}") << 42ul));
EXPECT_EQ("-0042", str(Format("{0:05}") << -42.0));
EXPECT_EQ("-0042", str(Format("{0:05}") << -42.0l));
EXPECT_THROW_MSG(Format("{0:0") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:05}") << 'c',
FormatError, "format specifier '0' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:05}") << "abc",
FormatError, "format specifier '0' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:05}") << reinterpret_cast<void*>(0x42),
FormatError, "format specifier '0' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:05}") << TestString(),
FormatError, "format specifier '0' requires numeric argument");
}
TEST(FormatterTest, Width) {
char format[BUFFER_SIZE];
SPrintf(format, "{0:%u", UINT_MAX);
Increment(format + 3);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
std::size_t size = std::strlen(format);
format[size] = '}';
format[size + 1] = 0;
EXPECT_THROW_MSG(Format(format) << 0,
FormatError, "number is too big in format");
SPrintf(format, "{0:%u", INT_MAX + 1u);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
SPrintf(format, "{0:%u}", INT_MAX + 1u);
EXPECT_THROW_MSG(Format(format) << 0,
FormatError, "number is too big in format");
EXPECT_EQ(" -42", str(Format("{0:4}") << -42));
EXPECT_EQ(" 42", str(Format("{0:5}") << 42u));
EXPECT_EQ(" -42", str(Format("{0:6}") << -42l));
EXPECT_EQ(" 42", str(Format("{0:7}") << 42ul));
EXPECT_EQ(" -1.23", str(Format("{0:8}") << -1.23));
EXPECT_EQ(" -1.23", str(Format("{0:9}") << -1.23l));
EXPECT_EQ(" 0xcafe",
str(Format("{0:10}") << reinterpret_cast<void*>(0xcafe)));
EXPECT_EQ("x ", str(Format("{0:11}") << 'x'));
EXPECT_EQ("str ", str(Format("{0:12}") << "str"));
EXPECT_EQ("test ", str(Format("{0:13}") << TestString("test")));
}
TEST(FormatterTest, Precision) {
char format[BUFFER_SIZE];
SPrintf(format, "{0:.%u", UINT_MAX);
Increment(format + 4);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
std::size_t size = std::strlen(format);
format[size] = '}';
format[size + 1] = 0;
EXPECT_THROW_MSG(Format(format) << 0,
FormatError, "number is too big in format");
SPrintf(format, "{0:.%u", INT_MAX + 1u);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
SPrintf(format, "{0:.%u}", INT_MAX + 1u);
EXPECT_THROW_MSG(Format(format) << 0,
FormatError, "number is too big in format");
EXPECT_THROW_MSG(Format("{0:.") << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.}") << 0,
FormatError, "missing precision in format");
EXPECT_THROW_MSG(Format("{0:.2") << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.2}") << 42,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << 42,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << 42u,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << 42u,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << 42l,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << 42l,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << 42ul,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << 42ul,
FormatError, "precision specifier requires floating-point argument");
EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345));
EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345l));
EXPECT_THROW_MSG(Format("{0:.2}") << reinterpret_cast<void*>(0xcafe),
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << reinterpret_cast<void*>(0xcafe),
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << 'x',
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << 'x',
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << "str",
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << "str",
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2}") << TestString(),
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.2f}") << TestString(),
FormatError, "precision specifier requires floating-point argument");
}
TEST(FormatterTest, RuntimePrecision) {
char format[BUFFER_SIZE];
SPrintf(format, "{0:.{%u", UINT_MAX);
Increment(format + 4);
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
std::size_t size = std::strlen(format);
format[size] = '}';
format[size + 1] = 0;
EXPECT_THROW_MSG(Format(format) << 0, FormatError, "unmatched '{' in format");
format[size + 1] = '}';
format[size + 2] = 0;
EXPECT_THROW_MSG(Format(format) << 0,
FormatError, "number is too big in format");
EXPECT_THROW_MSG(Format("{0:.{") << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{}") << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{x}}") << 0,
FormatError, "invalid argument index in format string");
EXPECT_THROW_MSG(Format("{0:.{1}") << 0 << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0,
FormatError, "argument index is out of range in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << -1,
FormatError, "negative precision in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << (INT_MAX + 1u),
FormatError, "number is too big in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << -1l,
FormatError, "negative precision in format");
if (sizeof(long) > sizeof(int)) {
long value = INT_MAX;
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << (value + 1),
FormatError, "number is too big in format");
}
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << (INT_MAX + 1ul),
FormatError, "number is too big in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << '0',
FormatError, "precision is not integer");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0 << 0.0,
FormatError, "precision is not integer");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 42 << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << 42 << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 42u << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << 42u << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 42l << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << 42l << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 42ul << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << 42ul << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_EQ("1.2", str(Format("{0:.{1}}") << 1.2345 << 2));
EXPECT_EQ("1.2", str(Format("{1:.{0}}") << 2 << 1.2345l));
EXPECT_THROW_MSG(Format("{0:.{1}}") << reinterpret_cast<void*>(0xcafe) << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << reinterpret_cast<void*>(0xcafe) << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 'x' << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << 'x' << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << "str" << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << "str" << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}}") << TestString() << 2,
FormatError, "precision specifier requires floating-point argument");
EXPECT_THROW_MSG(Format("{0:.{1}f}") << TestString() << 2,
FormatError, "precision specifier requires floating-point argument");
}
template <typename T>
void CheckUnknownTypes(
const T &value, const char *types, const char *type_name) {
char format[BUFFER_SIZE], message[BUFFER_SIZE];
const char *special = ".0123456789}";
for (int i = CHAR_MIN; i <= CHAR_MAX; ++i) {
char c = i;
if (std::strchr(types, c) || std::strchr(special, c) || !c) continue;
SPrintf(format, "{0:10%c}", c);
if (std::isprint(static_cast<unsigned char>(c)))
SPrintf(message, "unknown format code '%c' for %s", c, type_name);
else
SPrintf(message, "unknown format code '\\x%02x' for %s", c, type_name);
EXPECT_THROW_MSG(Format(format) << value, FormatError, message)
<< format << " " << message;
}
}
TEST(FormatterTest, FormatShort) {
short s = 42;
EXPECT_EQ("42", str(Format("{0:d}") << s));
unsigned short us = 42;
EXPECT_EQ("42", str(Format("{0:d}") << us));
}
TEST(FormatterTest, FormatInt) {
EXPECT_THROW_MSG(Format("{0:v") << 42,
FormatError, "unmatched '{' in format");
CheckUnknownTypes(42, "doxXbB", "integer");
}
TEST(FormatterTest, FormatDec) {
EXPECT_EQ("0", str(Format("{0}") << 0));
EXPECT_EQ("42", str(Format("{0}") << 42));
EXPECT_EQ("42", str(Format("{0:d}") << 42));
EXPECT_EQ("42", str(Format("{0}") << 42u));
EXPECT_EQ("-42", str(Format("{0}") << -42));
EXPECT_EQ("12345", str(Format("{0}") << 12345));
EXPECT_EQ("67890", str(Format("{0}") << 67890));
char buffer[BUFFER_SIZE];
SPrintf(buffer, "%d", INT_MIN);
EXPECT_EQ(buffer, str(Format("{0}") << INT_MIN));
SPrintf(buffer, "%d", INT_MAX);
EXPECT_EQ(buffer, str(Format("{0}") << INT_MAX));
SPrintf(buffer, "%u", UINT_MAX);
EXPECT_EQ(buffer, str(Format("{0}") << UINT_MAX));
SPrintf(buffer, "%ld", 0 - static_cast<unsigned long>(LONG_MIN));
EXPECT_EQ(buffer, str(Format("{0}") << LONG_MIN));
SPrintf(buffer, "%ld", LONG_MAX);
EXPECT_EQ(buffer, str(Format("{0}") << LONG_MAX));
SPrintf(buffer, "%lu", ULONG_MAX);
EXPECT_EQ(buffer, str(Format("{0}") << ULONG_MAX));
}
TEST(FormatterTest, FormatHex) {
EXPECT_EQ("0", str(Format("{0:x}") << 0));
EXPECT_EQ("42", str(Format("{0:x}") << 0x42));
EXPECT_EQ("42", str(Format("{0:x}") << 0x42u));
EXPECT_EQ("-42", str(Format("{0:x}") << -0x42));
EXPECT_EQ("12345678", str(Format("{0:x}") << 0x12345678));
EXPECT_EQ("90abcdef", str(Format("{0:x}") << 0x90abcdef));
EXPECT_EQ("12345678", str(Format("{0:X}") << 0x12345678));
EXPECT_EQ("90ABCDEF", str(Format("{0:X}") << 0x90ABCDEF));
EXPECT_EQ("10010001101000101011001111000", str(Format("{0:b}") << 0x12345678));
EXPECT_EQ("10010000101010111100110111101111", str(Format("{0:B}") << 0x90ABCDEF));
char buffer[BUFFER_SIZE];
SPrintf(buffer, "-%x", 0 - static_cast<unsigned>(INT_MIN));
EXPECT_EQ(buffer, str(Format("{0:x}") << INT_MIN));
SPrintf(buffer, "%x", INT_MAX);
EXPECT_EQ(buffer, str(Format("{0:x}") << INT_MAX));
SPrintf(buffer, "%x", UINT_MAX);
EXPECT_EQ(buffer, str(Format("{0:x}") << UINT_MAX));
SPrintf(buffer, "-%lx", 0 - static_cast<unsigned long>(LONG_MIN));
EXPECT_EQ(buffer, str(Format("{0:x}") << LONG_MIN));
SPrintf(buffer, "%lx", LONG_MAX);
EXPECT_EQ(buffer, str(Format("{0:x}") << LONG_MAX));