public function testInc()
{
isSame('title (2)', Str::inc('title', null, 0));
isSame('title(3)', Str::inc('title(2)', null, 0));
isSame('title-2', Str::inc('title', 'dash', 0));
isSame('title-3', Str::inc('title-2', 'dash', 0));
isSame('title (4)', Str::inc('title', null, 4));
isSame('title (2)', Str::inc('title', 'foo', 0));
}