GSL/tests/string_span_tests.cpp
2015-11-12 18:57:23 -08:00

126 lines
3.3 KiB
C++

///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
//
// This code is licensed under the MIT License (MIT).
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////
#include <UnitTest++/UnitTest++.h>
#include <string_span.h>
#include <vector>
#include <cstdlib>
using namespace std;
using namespace gsl;
SUITE(string_span_tests)
{
TEST(TestLiteralConstruction)
{
cwstring_span<> v = ensure_z(L"Hello");
CHECK(5 == v.length());
#ifdef CONFIRM_COMPILATION_ERRORS
wstring_span<> v2 = ensure0(L"Hello");
#endif
}
TEST(TestConstructFromStdString)
{
std::string s = "Hello there world";
cstring_span<> v = s;
CHECK(v.length() == static_cast<cstring_span<>::size_type>(s.length()));
}
TEST(TestConstructFromStdVector)
{
std::vector<char> vec(5, 'h');
string_span<> v = vec;
CHECK(v.length() == static_cast<string_span<>::size_type>(vec.size()));
}
TEST(TestStackArrayConstruction)
{
wchar_t stack_string[] = L"Hello";
{
cwstring_span<> v = ensure_z(stack_string);
CHECK(v.length() == 5);
CHECK(v.used_length() == v.length());
}
{
cwstring_span<> v = stack_string;
CHECK(v.length() == 6);
CHECK(v.used_length() == v.length());
}
{
wstring_span<> v = ensure_z(stack_string);
CHECK(v.length() == 5);
CHECK(v.used_length() == v.length());
}
{
wstring_span<> v = stack_string;
CHECK(v.length() == 6);
CHECK(v.used_length() == v.length());
}
}
TEST(TestConstructFromConstCharPointer)
{
const char* s = "Hello";
cstring_span<> v = ensure_z(s);
CHECK(v.length() == 5);
CHECK(v.used_length() == v.length());
}
TEST(TestConversionToConst)
{
char stack_string[] = "Hello";
string_span<> v = ensure_z(stack_string);
cstring_span<> v2 = v;
CHECK(v.length() == v2.length());
}
TEST(TestConversionFromConst)
{
char stack_string[] = "Hello";
cstring_span<> v = ensure_z(stack_string);
#ifdef CONFIRM_COMPILATION_ERRORS
string_span<> v2 = v;
string_span<> v3 = "Hello";
#endif
}
TEST(TestToString)
{
auto s = gsl::to_string(cstring_span<>{});
CHECK(s.length() == 0);
char stack_string[] = "Hello";
cstring_span<> v = ensure_z(stack_string);
auto s2 = gsl::to_string(v);
CHECK(static_cast<cstring_span<>::size_type>(s2.length()) == v.length());
CHECK(s2.length() == 5);
}
}
int main(int, const char *[])
{
return UnitTest::RunAllTests();
}