microsoft/GSL
1
0
Fork 1
mirror of https://github.com/microsoft/GSL.git synced 2025-10-04 11:01:37 +02:00
Code Issues Packages Projects Releases Wiki Activity

Added zstring_span and removed zstring_builder to support legacy strings

Browse Source
This commit is contained in:
Anna Gringauze
2016-02-03 19:04:39 -08:00
parent 6b82ac3d9c
commit b4ff206c24
2 changed files with 156 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

114
tests/string_span_tests.cpp
View File

@@ -830,6 +830,120 @@ SUITE(string_span_tests)
CHECK(wspan.length() == 5);
#endif
}
czstring_span<> CreateTempName(string_span<> span)
{
Expects(span.size() > 1);
int last = 0;
if (span.size() > 4)
{
span[0] = 't';
span[1] = 'm';
span[2] = 'p';
last = 3;
}
span[last] = '\0';
auto ret = span.subspan(0, 4);
return ret;
}
TEST(zstring)
{
// create zspan from zero terminated string
{
char buf[1];
buf[0] = '\0';
zstring_span<> zspan({ buf, 1 });
CHECK(strlen(zspan.assume_z()) == 0);
CHECK(zspan.as_string_span().size() == 0);
CHECK(zspan.ensure_z().size() == 0);
}
// create zspan from non-zero terminated string
{
char buf[1];
buf[0] = 'a';
auto workaround_macro = [&]() { zstring_span<> zspan({ buf, 1 }); };
CHECK_THROW(workaround_macro(), fail_fast);
}
// usage scenario: create zero-terminated temp file name and pass to a legacy API
{
char buf[10];
auto name = CreateTempName({ buf, 10 });
if (!name.empty())
{
czstring<> str = name.assume_z();
CHECK(strlen(str) == 3);
CHECK(*(str+3) == '\0');
}
}
}
cwzstring_span<> CreateTempNameW(wstring_span<> span)
{
Expects(span.size() > 1);
int last = 0;
if (span.size() > 4)
{
span[0] = L't';
span[1] = L'm';
span[2] = L'p';
last = 3;
}
span[last] = L'\0';
auto ret = span.subspan(0, 4);
return ret;
}
TEST(wzstring)
{
// create zspan from zero terminated string
{
wchar_t buf[1];
buf[0] = L'\0';
wzstring_span<> zspan({ buf, 1 });
CHECK(wcsnlen(zspan.assume_z(), 1) == 0);
CHECK(zspan.as_string_span().size() == 0);
CHECK(zspan.ensure_z().size() == 0);
}
// create zspan from non-zero terminated string
{
wchar_t buf[1];
buf[0] = L'a';
auto workaround_macro = [&]() { wzstring_span<> zspan({ buf, 1 }); };
CHECK_THROW(workaround_macro(), fail_fast);
}
// usage scenario: create zero-terminated temp file name and pass to a legacy API
{
wchar_t buf[10];
auto name = CreateTempNameW({ buf, 10 });
if (!name.empty())
{
cwzstring<> str = name.assume_z();
CHECK(wcsnlen(str, 10) == 3);
CHECK(*(str + 3) == L'\0');
}
}
}
}
int main(int, const char *[])