forked from catchorg/Catch2
151 lines
4.5 KiB
C++
151 lines
4.5 KiB
C++
#include "internal/catch_stringref.h"
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#include "catch.hpp"
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#include <cstring>
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TEST_CASE( "StringRef", "[Strings][StringRef]" ) {
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using Catch::StringRef;
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SECTION( "Empty string" ) {
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StringRef empty;
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REQUIRE( empty.empty() );
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REQUIRE( empty.size() == 0 );
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REQUIRE( empty.isNullTerminated() );
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REQUIRE( std::strcmp( empty.c_str(), "" ) == 0 );
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}
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SECTION( "From string literal" ) {
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StringRef s = "hello";
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REQUIRE( s.empty() == false );
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REQUIRE( s.size() == 5 );
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REQUIRE( s.isNullTerminated() );
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auto rawChars = s.data();
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REQUIRE( std::strcmp( rawChars, "hello" ) == 0 );
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REQUIRE_NOTHROW(s.c_str());
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REQUIRE(s.c_str() == rawChars);
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REQUIRE(s.data() == rawChars);
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}
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SECTION( "From sub-string" ) {
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StringRef original = StringRef( "original string" ).substr(0, 8);
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REQUIRE( original == "original" );
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REQUIRE_FALSE(original.isNullTerminated());
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REQUIRE_THROWS(original.c_str());
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REQUIRE_NOTHROW(original.data());
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}
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SECTION( "Substrings" ) {
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StringRef s = "hello world!";
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StringRef ss = s.substr(0, 5);
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SECTION( "zero-based substring" ) {
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REQUIRE( ss.empty() == false );
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REQUIRE( ss.size() == 5 );
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REQUIRE( std::strncmp( ss.data(), "hello", 5 ) == 0 );
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REQUIRE( ss == "hello" );
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}
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SECTION( "non-zero-based substring") {
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ss = s.substr( 6, 6 );
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REQUIRE( ss.size() == 6 );
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REQUIRE( std::strcmp( ss.c_str(), "world!" ) == 0 );
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}
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SECTION( "Pointer values of full refs should match" ) {
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StringRef s2 = s;
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REQUIRE( s.data() == s2.data() );
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}
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SECTION( "Pointer values of substring refs should also match" ) {
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REQUIRE( s.data() == ss.data() );
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}
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SECTION("Past the end substring") {
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REQUIRE(s.substr(s.size() + 1, 123).empty());
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}
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SECTION("Substring off the end are trimmed") {
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ss = s.substr(6, 123);
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REQUIRE(std::strcmp(ss.c_str(), "world!") == 0);
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}
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// TODO: substring into string + size is longer than end
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}
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SECTION( "Comparisons are deep" ) {
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char buffer1[] = "Hello";
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char buffer2[] = "Hello";
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CHECK((char*)buffer1 != (char*)buffer2);
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StringRef left(buffer1), right(buffer2);
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REQUIRE( left == right );
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REQUIRE(left != left.substr(0, 3));
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}
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SECTION( "from std::string" ) {
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std::string stdStr = "a standard string";
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SECTION( "implicitly constructed" ) {
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StringRef sr = stdStr;
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REQUIRE( sr == "a standard string" );
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REQUIRE( sr.size() == stdStr.size() );
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}
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SECTION( "explicitly constructed" ) {
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StringRef sr( stdStr );
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REQUIRE( sr == "a standard string" );
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REQUIRE( sr.size() == stdStr.size() );
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}
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SECTION( "assigned" ) {
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StringRef sr;
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sr = stdStr;
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REQUIRE( sr == "a standard string" );
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REQUIRE( sr.size() == stdStr.size() );
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}
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}
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SECTION( "to std::string" ) {
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StringRef sr = "a stringref";
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SECTION( "explicitly constructed" ) {
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std::string stdStr( sr );
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REQUIRE( stdStr == "a stringref" );
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REQUIRE( stdStr.size() == sr.size() );
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}
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SECTION( "assigned" ) {
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std::string stdStr;
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stdStr = static_cast<std::string>(sr);
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REQUIRE( stdStr == "a stringref" );
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REQUIRE( stdStr.size() == sr.size() );
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}
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}
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}
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TEST_CASE("StringRef at compilation time", "[Strings][StringRef][constexpr]") {
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using Catch::StringRef;
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SECTION("Simple constructors") {
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STATIC_REQUIRE(StringRef{}.size() == 0);
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STATIC_REQUIRE(StringRef{ "abc", 3 }.size() == 3);
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STATIC_REQUIRE(StringRef{ "abc", 3 }.isNullTerminated());
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STATIC_REQUIRE(StringRef{ "abc", 2 }.size() == 2);
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STATIC_REQUIRE_FALSE(StringRef{ "abc", 2 }.isNullTerminated());
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}
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SECTION("UDL construction") {
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constexpr auto sr1 = "abc"_catch_sr;
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STATIC_REQUIRE_FALSE(sr1.empty());
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STATIC_REQUIRE(sr1.size() == 3);
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STATIC_REQUIRE(sr1.isNullTerminated());
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using Catch::operator"" _sr;
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constexpr auto sr2 = ""_sr;
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STATIC_REQUIRE(sr2.empty());
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STATIC_REQUIRE(sr2.size() == 0);
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STATIC_REQUIRE(sr2.isNullTerminated());
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}
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}
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