public void ReturnTheWholeInputString_WhenThePassedCountIsGreaterThanInputStringLength()
{
string validInputString = "Valid";
int validCount = 10;
string expected = "Valid";
string result = ExceptionsHomework.ExtractEnding(validInputString, validCount);
Assert.AreEqual(expected, result);
}
public void ReturnNewSubstringConsistingOfCountNumberOfCharactersFromTheEnding_WhenThePassedParametersAreValid()
{
string validInputString = "Valid input string";
int validCount = 6;
string expected = "string";
string result = ExceptionsHomework.ExtractEnding(validInputString, validCount);
Assert.AreEqual(expected, result);
}
public void ReturnEmptyString_WhenThePassedCountIsNegative()
{
string validInputString = "Valid input string";
int validCount = -1;
string expected = string.Empty;
string result = ExceptionsHomework.ExtractEnding(validInputString, validCount);
Assert.AreEqual(expected, result);
}
public void ThrowArgumentException_WhenThePassedStringIsNullOrWhitespace(string inputString)
{
int validCount = 1;
Assert.Throws <ArgumentException>(() => ExceptionsHomework.ExtractEnding(inputString, validCount));
}