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Add more constexpr to StringRef

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This commit is contained in:
Martin Hořeňovský
2020-02-13 15:01:03 +01:00
parent 63b7d6f98e
commit 2945b80f61
10 changed files with 154 additions and 41 deletions
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31
tests/SelfTest/IntrospectiveTests/String.tests.cpp
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@@ -72,7 +72,9 @@ TEST_CASE( "StringRef", "[Strings][StringRef]" ) {
ss = s.substr(6, 123);
REQUIRE(std::strcmp(ss.c_str(), "world!") == 0);
}
// TODO: substring into string + size is longer than end
SECTION("substring start after the end is empty") {
REQUIRE(s.substr(1'000'000, 1).empty());
}
}
SECTION( "Comparisons are deep" ) {
@@ -124,15 +126,32 @@ TEST_CASE( "StringRef", "[Strings][StringRef]" ) {
}
TEST_CASE("StringRef at compilation time", "[Strings][StringRef][constexpr]") {
//TODO:
// * substr
using Catch::StringRef;
SECTION("Simple constructors") {
STATIC_REQUIRE(StringRef{}.size() == 0);
constexpr StringRef empty;
STATIC_REQUIRE(empty.size() == 0);
STATIC_REQUIRE(empty.begin() == empty.end());
STATIC_REQUIRE(StringRef{ "abc", 3 }.size() == 3);
STATIC_REQUIRE(StringRef{ "abc", 3 }.isNullTerminated());
constexpr char const* const abc = "abc";
STATIC_REQUIRE(StringRef{ "abc", 2 }.size() == 2);
STATIC_REQUIRE_FALSE(StringRef{ "abc", 2 }.isNullTerminated());
constexpr StringRef stringref(abc, 3);
STATIC_REQUIRE(stringref.size() == 3);
STATIC_REQUIRE(stringref.isNullTerminated());
STATIC_REQUIRE(stringref.data() == abc);
STATIC_REQUIRE(stringref.begin() == abc);
STATIC_REQUIRE(stringref.begin() != stringref.end());
STATIC_REQUIRE(stringref.substr(10, 0).empty());
STATIC_REQUIRE(stringref.substr(2, 1).data() == abc + 2);
constexpr StringRef shortened(abc, 2);
STATIC_REQUIRE(shortened.size() == 2);
STATIC_REQUIRE(shortened.data() == abc);
STATIC_REQUIRE(shortened.begin() != shortened.end());
STATIC_REQUIRE_FALSE(shortened.isNullTerminated());
STATIC_REQUIRE_FALSE(shortened.substr(1, 3).isNullTerminated());
}
SECTION("UDL construction") {
constexpr auto sr1 = "abc"_catch_sr;