public void AlreadyContainsOccurencesOf_Returns_ExpectedResults()
{
var input = "CDXCCDDE";
var result = StringExtensions.AlreadyContainsOccurencesOf(input, "CD", 2);
Assert.IsTrue(result);
input = "CDXC";
result = StringExtensions.AlreadyContainsOccurencesOf(input, "CD", 2);
Assert.IsFalse(result);
input = "ABCEFABEFECDEFCD";
result = StringExtensions.AlreadyContainsOccurencesOf(input, "EF", 3);
Assert.IsTrue(result);
input = "ABCEFABEFECDEFCD";
result = StringExtensions.AlreadyContainsOccurencesOf(input, "EF", 4);
Assert.IsFalse(result);
input = "ABDCDCDEFEFEF";
result = StringExtensions.AlreadyContainsOccurencesOf(input, "CD", 2);
Assert.IsTrue(result);
input = "ABCEFABEFECDFACD";
result = StringExtensions.AlreadyContainsOccurencesOf(input, "EF", 3);
Assert.IsFalse(result);
}