public void GetMatches_returns_empty_list_for_null_input()
{
// arrange
string input = null;
var regex = new Regex();
// act
var matches = regex.GetMatches(input, "some pattern");
// assert
Assert.That(matches.Count, Is.EqualTo(0));
}
public void GetMatches_returns_empty_list_for_no_match()
{
// arrange
var input = "abcdefg";
var pattern = "zzz";
var regex = new Regex();
// act
var matches = regex.GetMatches(input, pattern);
// assert
Assert.That(matches.Count, Is.EqualTo(0));
}
public void GetMatches_returns_correct_list_for_two_matches()
{
// arrange
var input = "abcdefg zzz asdfds zzz werewr";
var pattern = "zzz";
var regex = new Regex();
// act
var matches = regex.GetMatches(input, pattern);
// assert
Assert.That(matches.Count, Is.EqualTo(2));
Assert.That(matches.First(), Is.EqualTo("zzz"));
}