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cxxopt
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feat: Add tests for help menu formatting

This commit is contained in:
Nitin Kumar 2026-04-16 17:11:56 +05:30
parent 11f26227ef
commit 185cf9ef80
1 changed files with 78 additions and 0 deletions
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78
test/options.cpp
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@ -1568,3 +1568,81 @@ TEST_CASE("Ordering of multiple long options", "[help]")
CHECK(help.find("--alphaw") != std::string::npos);
CHECK(help.find("--beta") != std::string::npos);
}
TEST_CASE("Help output wrapping", "[help]")
{
struct {
std::string name;
cxxopts::Options parser;
std::vector<std::pair<std::string, std::string>> opts;
std::vector<std::string> positionals;
std::string expected;
} tests[] = {
{
"Long word does not drop trailing character",
cxxopts::Options("prog")
.set_width(18),
{{"o,opt", "01234567890"}},
{},
"\n"
"Usage:\n"
"prog [OPTION...]\n"
"\n"
" -o, --opt 0123456789\n"
" 0\n"
},
{
"Consecutive explicit newlines keep following text",
cxxopts::Options("prog")
.set_width(18),
{{"o,opt", "a\n\nb"}},
{},
"\n"
"Usage:\n"
"prog [OPTION...]\n"
"\n"
" -o, --opt a\n"
"\n"
" b\n"
},
{
"Trailing newline does not create whitespace-only continuation",
cxxopts::Options("prog")
.set_width(18),
{{"o,opt", "abc\n"}},
{},
"\n"
"Usage:\n"
"prog [OPTION...]\n"
"\n"
" -o, --opt abc\n"
"\n"
},
{
"Spaces before explicit newline are trimmed",
cxxopts::Options("prog")
.set_width(18),
{{"o,opt", "abc \nxyz"}},
{},
"\n"
"Usage:\n"
"prog [OPTION...]\n"
"\n"
" -o, --opt abc\n"
" xyz\n"
},
};
for (auto& tc : tests)
{
SECTION(tc.name)
{
for (const auto& opt : tc.opts)
{
tc.parser.add_options()(opt.first, opt.second);
}
tc.parser.parse_positional(tc.positionals);
CHECK(tc.parser.help() == tc.expected);
}
}
}