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https://github.com/catchorg/Catch2.git
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Cleanup and optimize stringifying of string-like types
More specifically, made the actual implementation of string-like type handling take argument as `Catch::StringRef`, instead of taking `std::string const&`. This means that string-like types that are not `std::string` no longer need to pay for an extra construction of `std::string` (including the potential allocation), before they can be stringified. The actual string stringification routine is now also better about reserving sufficient space.
This commit is contained in:
Martin Hořeňovský
parent
f50a06affa
commit
9137e591fa
@ -54,6 +54,48 @@ namespace Detail {
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}
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} // end unnamed namespace
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std::string convertIntoString(StringRef string, bool escape_invisibles) {
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std::string ret;
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// This is enough for the "don't escape invisibles" case, and a good
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// lower bound on the "escape invisibles" case.
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ret.reserve(string.size() + 2);
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if (!escape_invisibles) {
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ret += '"';
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ret += string;
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ret += '"';
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return ret;
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}
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ret += '"';
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for (char c : string) {
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switch (c) {
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case '\r':
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ret.append("\\r");
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break;
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case '\n':
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ret.append("\\n");
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break;
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case '\t':
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ret.append("\\t");
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break;
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case '\f':
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ret.append("\\f");
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break;
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default:
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ret.push_back(c);
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break;
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}
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}
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ret += '"';
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return ret;
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}
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std::string convertIntoString(StringRef string) {
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return convertIntoString(string, getCurrentContext().getConfig()->showInvisibles());
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}
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std::string rawMemoryToString( const void *object, std::size_t size ) {
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// Reverse order for little endian architectures
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int i = 0, end = static_cast<int>( size ), inc = 1;
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@ -80,44 +122,25 @@ namespace Detail {
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//// ======================================================= ////
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std::string StringMaker<std::string>::convert(const std::string& str) {
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if (!getCurrentContext().getConfig()->showInvisibles()) {
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return '"' + str + '"';
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}
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std::string s("\"");
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for (char c : str) {
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switch (c) {
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case '\n':
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s.append("\\n");
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break;
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case '\t':
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s.append("\\t");
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break;
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default:
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s.push_back(c);
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break;
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}
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}
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s.append("\"");
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return s;
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return Detail::convertIntoString( str );
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}
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#ifdef CATCH_CONFIG_CPP17_STRING_VIEW
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std::string StringMaker<std::string_view>::convert(std::string_view str) {
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return ::Catch::Detail::stringify(std::string{ str });
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return Detail::convertIntoString( StringRef( str.data(), str.size() ) );
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}
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#endif
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std::string StringMaker<char const*>::convert(char const* str) {
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if (str) {
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return ::Catch::Detail::stringify(std::string{ str });
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return Detail::convertIntoString( str );
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} else {
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return{ "{null string}" };
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}
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}
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std::string StringMaker<char*>::convert(char* str) {
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if (str) {
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return ::Catch::Detail::stringify(std::string{ str });
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return Detail::convertIntoString( str );
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} else {
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return{ "{null string}" };
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}
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@ -13,6 +13,7 @@
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#include <cstddef>
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#include <type_traits>
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#include <string>
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#include <string.h>
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#include <catch2/internal/catch_compiler_capabilities.hpp>
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#include <catch2/internal/catch_config_wchar.hpp>
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#include <catch2/internal/catch_stream.hpp>
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@ -32,6 +33,13 @@ namespace Catch {
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constexpr StringRef unprintableString = "{?}"_sr;
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//! Encases `string in quotes, and optionally escapes invisibles
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std::string convertIntoString( StringRef string, bool escapeInvisibles );
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//! Encases `string` in quotes, and escapes invisibles if user requested
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//! it via CLI
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std::string convertIntoString( StringRef string );
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std::string rawMemoryToString( const void *object, std::size_t size );
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template<typename T>
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@ -186,24 +194,31 @@ namespace Catch {
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};
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#endif // CATCH_CONFIG_WCHAR
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// TBD: Should we use `strnlen` to ensure that we don't go out of the buffer,
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// while keeping string semantics?
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template<int SZ>
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struct StringMaker<char[SZ]> {
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static std::string convert(char const* str) {
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return ::Catch::Detail::stringify(std::string{ str });
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// Note that `strnlen` is not actually part of standard C++,
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// but both POSIX and Windows cstdlib provide it.
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return Detail::convertIntoString(
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StringRef( str, strnlen( str, SZ ) ) );
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}
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};
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template<int SZ>
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struct StringMaker<signed char[SZ]> {
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static std::string convert(signed char const* str) {
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return ::Catch::Detail::stringify(std::string{ reinterpret_cast<char const *>(str) });
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// See the plain `char const*` overload
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auto reinterpreted = reinterpret_cast<char const*>(str);
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return Detail::convertIntoString(
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StringRef(reinterpreted, strnlen(reinterpreted, SZ)));
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}
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};
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template<int SZ>
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struct StringMaker<unsigned char[SZ]> {
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static std::string convert(unsigned char const* str) {
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return ::Catch::Detail::stringify(std::string{ reinterpret_cast<char const *>(str) });
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// See the plain `char const*` overload
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auto reinterpreted = reinterpret_cast<char const*>(str);
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return Detail::convertIntoString(
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StringRef(reinterpreted, strnlen(reinterpreted, SZ)));
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}
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};
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@ -205,6 +205,9 @@ Message from section two
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:test-result: PASS String matchers
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:test-result: PASS StringRef
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:test-result: PASS StringRef at compilation time
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:test-result: PASS Stringifying char arrays with statically known sizes - char
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:test-result: PASS Stringifying char arrays with statically known sizes - signed char
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:test-result: PASS Stringifying char arrays with statically known sizes - unsigned char
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:test-result: PASS Stringifying std::chrono::duration helpers
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:test-result: PASS Stringifying std::chrono::duration with weird ratios
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:test-result: PASS Stringifying std::chrono::time_point<system_clock>
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@ -1532,6 +1532,12 @@ String.tests.cpp:<line number>: passed: with 1 message: '!(sr1.empty())'
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String.tests.cpp:<line number>: passed: with 1 message: 'sr1.size() == 3'
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String.tests.cpp:<line number>: passed: with 1 message: 'sr2.empty()'
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String.tests.cpp:<line number>: passed: with 1 message: 'sr2.size() == 0'
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToString.tests.cpp:<line number>: passed: ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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ToStringChrono.tests.cpp:<line number>: passed: minute == seconds for: 1 m == 60 s
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ToStringChrono.tests.cpp:<line number>: passed: hour != seconds for: 1 h != 60 s
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ToStringChrono.tests.cpp:<line number>: passed: micro != milli for: 1 us != 1 ms
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@ -1386,6 +1386,6 @@ due to unexpected exception with message:
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Why would you throw a std::string?
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===============================================================================
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test cases: 360 | 284 passed | 70 failed | 6 failed as expected
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assertions: 2084 | 1932 passed | 129 failed | 23 failed as expected
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test cases: 363 | 287 passed | 70 failed | 6 failed as expected
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assertions: 2090 | 1938 passed | 129 failed | 23 failed as expected
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@ -10865,6 +10865,54 @@ String.tests.cpp:<line number>: PASSED:
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with message:
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sr2.size() == 0
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-------------------------------------------------------------------------------
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Stringifying char arrays with statically known sizes - char
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-------------------------------------------------------------------------------
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ToString.tests.cpp:<line number>
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...............................................................................
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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-------------------------------------------------------------------------------
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Stringifying char arrays with statically known sizes - signed char
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-------------------------------------------------------------------------------
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ToString.tests.cpp:<line number>
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...............................................................................
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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-------------------------------------------------------------------------------
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Stringifying char arrays with statically known sizes - unsigned char
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-------------------------------------------------------------------------------
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ToString.tests.cpp:<line number>
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...............................................................................
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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ToString.tests.cpp:<line number>: PASSED:
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CHECK( ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s )
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with expansion:
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""abc"" == ""abc""
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-------------------------------------------------------------------------------
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Stringifying std::chrono::duration helpers
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-------------------------------------------------------------------------------
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@ -16782,6 +16830,6 @@ Misc.tests.cpp:<line number>
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Misc.tests.cpp:<line number>: PASSED:
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===============================================================================
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test cases: 360 | 268 passed | 86 failed | 6 failed as expected
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assertions: 2101 | 1932 passed | 146 failed | 23 failed as expected
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test cases: 363 | 271 passed | 86 failed | 6 failed as expected
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assertions: 2107 | 1938 passed | 146 failed | 23 failed as expected
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@ -1,7 +1,7 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<testsuitesloose text artifact
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>
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<testsuite name="<exe-name>" errors="17" failures="130" tests="2102" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<testsuite name="<exe-name>" errors="17" failures="130" tests="2108" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<properties>
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<property name="filters" value="~[!nonportable]~[!benchmark]~[approvals] *"/>
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<property name="random-seed" value="1"/>
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@ -1194,6 +1194,9 @@ Matchers.tests.cpp:<line number>
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<testcase classname="<exe-name>.global" name="StringRef/StringRef + StringRef" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="StringRef at compilation time/Simple constructors" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="StringRef at compilation time/UDL construction" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying char arrays with statically known sizes - char" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying char arrays with statically known sizes - signed char" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying char arrays with statically known sizes - unsigned char" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying std::chrono::duration helpers" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying std::chrono::duration with weird ratios" time="{duration}" status="run"/>
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<testcase classname="<exe-name>.global" name="Stringifying std::chrono::time_point<system_clock>" time="{duration}" status="run"/>
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@ -222,6 +222,9 @@
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<file path="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp">
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<testCase name="Directly creating an EnumInfo" duration="{duration}"/>
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<testCase name="Range type with sentinel" duration="{duration}"/>
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<testCase name="Stringifying char arrays with statically known sizes - char" duration="{duration}"/>
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<testCase name="Stringifying char arrays with statically known sizes - signed char" duration="{duration}"/>
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<testCase name="Stringifying char arrays with statically known sizes - unsigned char" duration="{duration}"/>
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<testCase name="parseEnums/No enums" duration="{duration}"/>
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<testCase name="parseEnums/One enum value" duration="{duration}"/>
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<testCase name="parseEnums/Multiple enum values" duration="{duration}"/>
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@ -2743,6 +2743,18 @@ ok {test-number} - with 1 message: 'sr1.size() == 3'
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ok {test-number} - with 1 message: 'sr2.empty()'
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# StringRef at compilation time
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ok {test-number} - with 1 message: 'sr2.size() == 0'
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# Stringifying char arrays with statically known sizes - char
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ok {test-number} - ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying char arrays with statically known sizes - char
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ok {test-number} - ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying char arrays with statically known sizes - signed char
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ok {test-number} - ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying char arrays with statically known sizes - signed char
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ok {test-number} - ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying char arrays with statically known sizes - unsigned char
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ok {test-number} - ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying char arrays with statically known sizes - unsigned char
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ok {test-number} - ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s for: ""abc"" == ""abc""
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# Stringifying std::chrono::duration helpers
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ok {test-number} - minute == seconds for: 1 m == 60 s
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# Stringifying std::chrono::duration helpers
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@ -4204,5 +4216,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
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ok {test-number} -
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# xmlentitycheck
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ok {test-number} -
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1..2101
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1..2107
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@ -510,6 +510,12 @@ Matchers.tests.cpp:<line number>|nexpression failed|n CHECK_THAT( testStringFor
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##teamcity[testFinished name='StringRef' duration="{duration}"]
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##teamcity[testStarted name='StringRef at compilation time']
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##teamcity[testFinished name='StringRef at compilation time' duration="{duration}"]
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##teamcity[testStarted name='Stringifying char arrays with statically known sizes - char']
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##teamcity[testFinished name='Stringifying char arrays with statically known sizes - char' duration="{duration}"]
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##teamcity[testStarted name='Stringifying char arrays with statically known sizes - signed char']
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##teamcity[testFinished name='Stringifying char arrays with statically known sizes - signed char' duration="{duration}"]
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##teamcity[testStarted name='Stringifying char arrays with statically known sizes - unsigned char']
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##teamcity[testFinished name='Stringifying char arrays with statically known sizes - unsigned char' duration="{duration}"]
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##teamcity[testStarted name='Stringifying std::chrono::duration helpers']
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##teamcity[testFinished name='Stringifying std::chrono::duration helpers' duration="{duration}"]
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##teamcity[testStarted name='Stringifying std::chrono::duration with weird ratios']
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@ -12900,6 +12900,63 @@ Message from section two
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</Section>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Stringifying char arrays with statically known sizes - char" tags="[toString]" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Stringifying char arrays with statically known sizes - signed char" tags="[toString]" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Stringifying char arrays with statically known sizes - unsigned char" tags="[toString]" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<Expression success="true" type="CHECK" filename="tests/<exe-name>/IntrospectiveTests/ToString.tests.cpp" >
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<Original>
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::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s
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</Original>
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<Expanded>
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""abc"" == ""abc""
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</Expanded>
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
|
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<TestCase name="Stringifying std::chrono::duration helpers" tags="[chrono][toString]" filename="tests/<exe-name>/UsageTests/ToStringChrono.tests.cpp" >
|
||||
<Expression success="true" type="REQUIRE" filename="tests/<exe-name>/UsageTests/ToStringChrono.tests.cpp" >
|
||||
<Original>
|
||||
@ -19745,9 +19802,9 @@ loose text artifact
|
||||
</Section>
|
||||
<OverallResult success="true"/>
|
||||
</TestCase>
|
||||
<OverallResults successes="1932" failures="147" expectedFailures="23"/>
|
||||
<OverallResultsCases successes="268" failures="86" expectedFailures="6"/>
|
||||
<OverallResults successes="1938" failures="147" expectedFailures="23"/>
|
||||
<OverallResultsCases successes="271" failures="86" expectedFailures="6"/>
|
||||
</Group>
|
||||
<OverallResults successes="1932" failures="146" expectedFailures="23"/>
|
||||
<OverallResultsCases successes="268" failures="86" expectedFailures="6"/>
|
||||
<OverallResults successes="1938" failures="146" expectedFailures="23"/>
|
||||
<OverallResultsCases successes="271" failures="86" expectedFailures="6"/>
|
||||
</Catch>
|
||||
|
||||
@ -1,6 +1,7 @@
|
||||
#include <catch2/internal/catch_enum_values_registry.hpp>
|
||||
#include <catch2/matchers/catch_matchers_vector.hpp>
|
||||
#include <catch2/catch_test_macros.hpp>
|
||||
#include <catch2/catch_template_test_macros.hpp>
|
||||
|
||||
enum class EnumClass3 { Value1, Value2, Value3, Value4 };
|
||||
|
||||
@ -51,3 +52,38 @@ TEST_CASE( "Directly creating an EnumInfo" ) {
|
||||
TEST_CASE("Range type with sentinel") {
|
||||
CHECK( Catch::Detail::stringify(UsesSentinel{}) == "{ }" );
|
||||
}
|
||||
|
||||
TEST_CASE("convertIntoString stringification helper", "[toString][approvals]") {
|
||||
using namespace std::string_literals;
|
||||
using Catch::Detail::convertIntoString;
|
||||
using namespace Catch;
|
||||
|
||||
SECTION("No escaping") {
|
||||
CHECK(convertIntoString(""_sr, false) == R"("")"s);
|
||||
CHECK(convertIntoString("abcd"_sr, false) == R"("abcd")"s);
|
||||
CHECK(convertIntoString("ab\ncd"_sr, false) == "\"ab\ncd\""s);
|
||||
CHECK(convertIntoString("ab\r\ncd"_sr, false) == "\"ab\r\ncd\""s);
|
||||
CHECK(convertIntoString("ab\"cd"_sr, false) == R"("ab"cd")"s);
|
||||
}
|
||||
SECTION("Escaping invisibles") {
|
||||
CHECK(convertIntoString(""_sr, true) == R"("")"s);
|
||||
CHECK(convertIntoString("ab\ncd"_sr, true) == R"("ab\ncd")"s);
|
||||
CHECK(convertIntoString("ab\r\ncd"_sr, true) == R"("ab\r\ncd")"s);
|
||||
CHECK(convertIntoString("ab\tcd"_sr, true) == R"("ab\tcd")"s);
|
||||
CHECK(convertIntoString("ab\fcd"_sr, true) == R"("ab\fcd")"s);
|
||||
CHECK(convertIntoString("ab\"cd"_sr, true) == R"("ab"cd")"s);
|
||||
}
|
||||
}
|
||||
|
||||
TEMPLATE_TEST_CASE( "Stringifying char arrays with statically known sizes",
|
||||
"[toString]",
|
||||
char,
|
||||
signed char,
|
||||
unsigned char ) {
|
||||
using namespace std::string_literals;
|
||||
TestType with_null_terminator[10] = "abc";
|
||||
CHECK( ::Catch::Detail::stringify( with_null_terminator ) == R"("abc")"s );
|
||||
|
||||
TestType no_null_terminator[3] = { 'a', 'b', 'c' };
|
||||
CHECK( ::Catch::Detail::stringify( no_null_terminator ) == R"("abc")"s );
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user