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