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#include <string>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/strings/str_format.h"
namespace absl {
namespace str_format_internal {
namespace {
std::string ConvToString(Conv conv) {
std::string out;
#define CONV_SET_CASE(c) \
if (Contains(conv, Conv::c)) out += #c;
ABSL_CONVERSION_CHARS_EXPAND_(CONV_SET_CASE, )
#undef CONV_SET_CASE
if (Contains(conv, Conv::star)) out += "*";
return out;
}
TEST(StrFormatChecker, ArgumentToConv) {
Conv conv = ArgumentToConv<std::string>();
EXPECT_EQ(ConvToString(conv), "s");
conv = ArgumentToConv<const char*>();
EXPECT_EQ(ConvToString(conv), "sp");
conv = ArgumentToConv<double>();
EXPECT_EQ(ConvToString(conv), "fFeEgGaA");
conv = ArgumentToConv<int>();
EXPECT_EQ(ConvToString(conv), "cdiouxXfFeEgGaA*");
conv = ArgumentToConv<std::string*>();
EXPECT_EQ(ConvToString(conv), "p");
}
#if ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
struct Case {
bool result;
const char* format;
};
template <typename... Args>
constexpr Case ValidFormat(const char* format) {
return {ValidFormatImpl<ArgumentToConv<Args>()...>(format), format};
}
TEST(StrFormatChecker, ValidFormat) {
// We want to make sure these expressions are constexpr and they have the
// expected value.
// If they are not constexpr the attribute will just ignore them and not give
// a compile time error.
enum e {};
enum class e2 {};
constexpr Case trues[] = {
ValidFormat<>("abc"), //
ValidFormat<e>("%d"), //
ValidFormat<e2>("%d"), //
ValidFormat<int>("%% %d"), //
ValidFormat<int>("%ld"), //
ValidFormat<int>("%lld"), //
ValidFormat<std::string>("%s"), //
ValidFormat<std::string>("%10s"), //
ValidFormat<int>("%.10x"), //
ValidFormat<int, int>("%*.3x"), //
ValidFormat<int>("%1.d"), //
ValidFormat<int>("%.d"), //
ValidFormat<int, double>("%d %g"), //
ValidFormat<int, std::string>("%*s"), //
ValidFormat<int, double>("%.*f"), //
ValidFormat<void (*)(), volatile int*>("%p %p"), //
ValidFormat<string_view, const char*, double, void*>(
"string_view=%s const char*=%s double=%f void*=%p)"),
ValidFormat<int>("%% %1$d"), //
ValidFormat<int>("%1$ld"), //
ValidFormat<int>("%1$lld"), //
ValidFormat<std::string>("%1$s"), //
ValidFormat<std::string>("%1$10s"), //
ValidFormat<int>("%1$.10x"), //
ValidFormat<int>("%1$*1$.*1$d"), //
ValidFormat<int, int>("%1$*2$.3x"), //
ValidFormat<int>("%1$1.d"), //
ValidFormat<int>("%1$.d"), //
ValidFormat<double, int>("%2$d %1$g"), //
ValidFormat<int, std::string>("%2$*1$s"), //
ValidFormat<int, double>("%2$.*1$f"), //
ValidFormat<void*, string_view, const char*, double>(
"string_view=%2$s const char*=%3$s double=%4$f void*=%1$p "
"repeat=%3$s)")};
for (Case c : trues) {
EXPECT_TRUE(c.result) << c.format;
}
constexpr Case falses[] = {
ValidFormat<int>(""), //
ValidFormat<e>("%s"), //
ValidFormat<e2>("%s"), //
ValidFormat<>("%s"), //
ValidFormat<>("%r"), //
ValidFormat<int>("%s"), //
ValidFormat<int>("%.1.d"), //
ValidFormat<int>("%*1d"), //
ValidFormat<int>("%1-d"), //
ValidFormat<std::string, int>("%*s"), //
ValidFormat<int>("%*d"), //
ValidFormat<std::string>("%p"), //
ValidFormat<int (*)(int)>("%d"), //
ValidFormat<>("%3$d"), //
ValidFormat<>("%1$r"), //
ValidFormat<int>("%1$s"), //
ValidFormat<int>("%1$.1.d"), //
ValidFormat<int>("%1$*2$1d"), //
ValidFormat<int>("%1$1-d"), //
ValidFormat<std::string, int>("%2$*1$s"), //
ValidFormat<std::string>("%1$p"),
ValidFormat<int, int>("%d %2$d"), //
};
for (Case c : falses) {
EXPECT_FALSE(c.result) << c.format;
}
}
TEST(StrFormatChecker, LongFormat) {
#define CHARS_X_40 "1234567890123456789012345678901234567890"
#define CHARS_X_400 \
CHARS_X_40 CHARS_X_40 CHARS_X_40 CHARS_X_40 CHARS_X_40 CHARS_X_40 CHARS_X_40 \
CHARS_X_40 CHARS_X_40 CHARS_X_40
#define CHARS_X_4000 \
CHARS_X_400 CHARS_X_400 CHARS_X_400 CHARS_X_400 CHARS_X_400 CHARS_X_400 \
CHARS_X_400 CHARS_X_400 CHARS_X_400 CHARS_X_400
constexpr char long_format[] =
CHARS_X_4000 "%d" CHARS_X_4000 "%s" CHARS_X_4000;
constexpr bool is_valid = ValidFormat<int, std::string>(long_format).result;
EXPECT_TRUE(is_valid);
}
#endif // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
} // namespace
} // namespace str_format_internal
} // namespace absl
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