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// file : tests/strcase/driver.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef __cpp_lib_modules_ts
#include <string>
#endif
// Other includes.
#ifdef __cpp_modules_ts
#ifdef __cpp_lib_modules_ts
import std.core;
#endif
import butl.utility;
#else
#include <libbutl/utility.mxx>
#endif
#undef NDEBUG
#include <cassert>
using namespace std;
using namespace butl;
int
main ()
{
const string upper ("+/0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
const string lower ("+/0123456789abcdefghijklmnopqrstuvwxyz");
assert (icasecmp (upper, lower) == 0);
assert (icasecmp (upper, lower, upper.size ()) == 0);
assert (icasecmp (upper, lower, 100) == 0);
assert (icasecmp ("a", "A1") < 0);
assert (icasecmp ("A1", "a") > 0);
assert (icasecmp ("a", "A1", 1) == 0);
assert (icasecmp ("A1", "a", 1) == 0);
assert (icasecmp ("a", "b", 0) == 0);
for (size_t i (0); i < upper.size (); ++i)
{
assert (icasecmp (upper[i], lower[i]) == 0);
if (i > 0)
{
assert (icasecmp (upper[i], lower[i - 1]) > 0);
assert (icasecmp (lower[i - 1], upper[i]) < 0);
}
}
// As icasecmp() compares strings as if they have been converted to the
// lower case the characters [\]^_` (located between 'Z' and 'a' in the ASCII
// table) evaluates as less than any alphabetic character.
//
string ascii_91_96 ("[\\]^_`");
for (const auto& c: ascii_91_96)
{
assert (icasecmp (&c, "A", 1) < 0);
assert (icasecmp (&c, "a", 1) < 0);
}
assert (ucase (lower) == upper);
assert (lcase (upper) == lower);
assert (ucase (lower.c_str (), 20) == string (upper, 0, 20));
assert (lcase (upper.c_str (), 20) == string (lower, 0, 20));
assert (ucase (lower.c_str (), 0) == string ());
assert (lcase (upper.c_str (), 0) == string ());
assert (ucase ("") == string ());
assert (lcase ("") == string ());
string s (upper);
assert (lcase (s) == lower);
s = lower;
ucase (const_cast<char*> (s.data ()), s.size ());
assert (s == upper);
}
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