Abseil Common Libraries (C++) (grcp 依赖)
https://abseil.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
170 lines
6.1 KiB
170 lines
6.1 KiB
// Copyright 2020 The Abseil Authors. |
|
// |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// https://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
|
|
#include <string> |
|
|
|
#include "gmock/gmock.h" |
|
#include "gtest/gtest.h" |
|
#include "absl/strings/str_format.h" |
|
|
|
namespace absl { |
|
ABSL_NAMESPACE_BEGIN |
|
namespace str_format_internal { |
|
namespace { |
|
|
|
std::string ConvToString(FormatConversionCharSet conv) { |
|
std::string out; |
|
#define CONV_SET_CASE(c) \ |
|
if (Contains(conv, FormatConversionCharSetInternal::c)) { \ |
|
out += #c; \ |
|
} |
|
ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(CONV_SET_CASE, ) |
|
#undef CONV_SET_CASE |
|
if (Contains(conv, FormatConversionCharSetInternal::kStar)) { |
|
out += "*"; |
|
} |
|
return out; |
|
} |
|
|
|
TEST(StrFormatChecker, ArgumentToConv) { |
|
FormatConversionCharSet 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"); |
|
} |
|
|
|
#ifdef 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 |
|
ABSL_NAMESPACE_END |
|
} // namespace absl
|
|
|