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Rewrite length specifier tests without using printf to workaround broken MSVC implementation.

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This commit is contained in:
Victor Zverovich 2014-08-11 08:34:17 -07:00
parent 137153b9f0
commit adbf3f8b86
1 changed files with 42 additions and 55 deletions
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97
test/printf-test.cc
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@ -273,15 +273,6 @@ TEST(PrintfTest, DynamicPrecision) {
}
}
bool IsSupported(const std::string &format) {
#if _MSC_VER
// MSVC doesn't support hh, j, z and t format specifiers.
return format.substr(1, 2) != "hh";
#else
return true;
#endif
}
template <typename T>
struct MakeSigned { typedef T Type; };
@ -297,66 +288,62 @@ SPECIALIZE_MAKE_SIGNED(unsigned long, long);
SPECIALIZE_MAKE_SIGNED(fmt::ULongLong, fmt::LongLong);
template <typename T, typename U>
std::string sprintf_int(std::string format, U value) {
char buffer[BUFFER_SIZE];
char type = format[format.size() - 1];
if (sizeof(T) < sizeof(int)) {
if (type == 'd' || type == 'i') {
typedef typename MakeSigned<T>::Type Signed;
safe_sprintf(buffer, format.c_str(), static_cast<Signed>(value));
} else {
typedef typename fmt::internal::MakeUnsigned<T>::Type Unsigned;
safe_sprintf(buffer, format.c_str(), static_cast<Unsigned>(value));
}
} else {
safe_sprintf(buffer, format.c_str(), value);
}
return buffer;
}
#define EXPECT_STD_PRINTF(format, T, arg) { \
char buffer[BUFFER_SIZE]; \
if (IsSupported(format)) { \
safe_sprintf(buffer, fmt::StringRef(format).c_str(), arg); \
EXPECT_PRINTF(buffer, format, arg); \
} \
EXPECT_PRINTF(sprintf_int<T>(format, arg), format, arg); \
void TestLength(const char *length_spec, U value) {
std::ostringstream os;
// Use LongLong instead of T, because std::ostream prints signed char as
// a character, not a number.
os << static_cast<fmt::LongLong>(
static_cast<typename MakeSigned<T>::Type>(value));
EXPECT_PRINTF(os.str(), fmt::format("%{}d", length_spec), value);
EXPECT_PRINTF(os.str(), fmt::format("%{}i", length_spec), value);
fmt::ULongLong unsigned_value =
static_cast<typename fmt::internal::MakeUnsigned<T>::Type>(value);
os.str("");
os << unsigned_value;
EXPECT_PRINTF(os.str(), fmt::format("%{}u", length_spec), value);
os.str("");
os << std::oct << unsigned_value;
EXPECT_PRINTF(os.str(), fmt::format("%{}o", length_spec), value);
os.str("");
os << std::hex << unsigned_value;
EXPECT_PRINTF(os.str(), fmt::format("%{}x", length_spec), value);
os.str("");
os << std::hex << std::uppercase << unsigned_value;
EXPECT_PRINTF(os.str(), fmt::format("%{}X", length_spec), value);
}
template <typename T>
void TestLength(const char *length_spec) {
T min = std::numeric_limits<T>::min(), max = std::numeric_limits<T>::max();
const char types[] = {'d', 'i', 'u', 'o', 'x', 'X'};
for (int i = 0; i < sizeof(types); ++i) {
std::string format = fmt::format("%{}{}", length_spec, types[i]);
EXPECT_STD_PRINTF(format, T, 42);
EXPECT_STD_PRINTF(format, T, min);
EXPECT_STD_PRINTF(format, T, max);
EXPECT_STD_PRINTF(format, T, fmt::LongLong(min) - 1);
EXPECT_STD_PRINTF(format, T, fmt::LongLong(max) + 1);
EXPECT_STD_PRINTF(format, T, std::numeric_limits<short>::min());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<unsigned short>::max());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<int>::min());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<int>::max());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<unsigned>::min());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<unsigned>::max());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<fmt::LongLong>::min());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<fmt::LongLong>::max());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<fmt::ULongLong>::min());
EXPECT_STD_PRINTF(format, T, std::numeric_limits<fmt::ULongLong>::max());
}
TestLength<T>(length_spec, 42);
TestLength<T>(length_spec, -42);
TestLength<T>(length_spec, min);
TestLength<T>(length_spec, max);
TestLength<T>(length_spec, fmt::LongLong(min) - 1);
TestLength<T>(length_spec, fmt::LongLong(max) + 1);
TestLength<T>(length_spec, std::numeric_limits<short>::min());
TestLength<T>(length_spec, std::numeric_limits<unsigned short>::max());
TestLength<T>(length_spec, std::numeric_limits<int>::min());
TestLength<T>(length_spec, std::numeric_limits<int>::max());
TestLength<T>(length_spec, std::numeric_limits<unsigned>::min());
TestLength<T>(length_spec, std::numeric_limits<unsigned>::max());
TestLength<T>(length_spec, std::numeric_limits<fmt::LongLong>::min());
TestLength<T>(length_spec, std::numeric_limits<fmt::LongLong>::max());
TestLength<T>(length_spec, std::numeric_limits<fmt::ULongLong>::min());
TestLength<T>(length_spec, std::numeric_limits<fmt::ULongLong>::max());
}
TEST(PrintfTest, Length) {
TestLength<char>("hh");
TestLength<signed char>("hh");
TestLength<unsigned char>("hh");
TestLength<short>("h");
/*TestLength<short>("h");
TestLength<unsigned short>("h");
TestLength<long>("l");
//TestLength<unsigned long>("l");
TestLength<unsigned long>("l");
// TODO: more tests
EXPECT_EQ("-1", sprintf_int<unsigned char>("%hhd", UCHAR_MAX));
EXPECT_EQ("255", sprintf_int<unsigned char>("%hhu", UCHAR_MAX));
EXPECT_EQ("255", sprintf_int<unsigned char>("%hhu", UCHAR_MAX));*/
}
// TODO: test type specifier