public void Add_With_Delimiter_Between_Numbers(string numbers)
{
// Assign
var calc = new StringCalculator();
// Arrange
calc.Add(numbers);
// Assert
var expected = 3;
Assert.AreEqual(expected, calc.answer);
}
public void Add_Pseudo_Unknown_Number_Of_Numbers(string numbers)
{
// Assign
var calc = new StringCalculator();
// Arrange
calc.Add(numbers);
// Assert
var expected = numbers.Split(',').Sum((a) => int.Parse(a));
Assert.AreEqual(expected, calc.answer);
}
public void Add_Newline_Between_Numbers(string numbers)
{
// Assign
var calc = new StringCalculator();
// Arrange
calc.Add(numbers);
// Assert
var expected = numbers.Replace('\n', ',').Split(',').Sum((a) => int.Parse(a));
Assert.AreEqual(expected, calc.answer);
}
//method name, scenario under which testing, & expected outcome
//public void UnitUnderTest_Scenario_ExpectedOutcome()
public void Add_EmptyString_Returns_0()
{
//Arrange: initialize object and sets the value of the data
//that is passed to the method under test
StringCalculator calc = new StringCalculator();
//Act: invokes the method under test ('Add' in StringCalculator)
int expectedResult = 0;
//this test started failing; see fix in
//StringCalculator.cs
int result = calc.Add("");
//Assert: verifies that the action of the method under test behaves as expected
Assert.AreEqual(expectedResult, result);
}
public void Add_EmptyDelimiterIsRejected(string inpString)
{
var calculator = new StringCalculator();
calculator.Add(inpString);
}
public void Add_NullIsRejected()
{
var calculator = new StringCalculator();
calculator.Add(null);
}
public void Add_StringContainingSingleNumber_ReturnsTheNumberItself()
{
Assert.AreEqual(5, StringCalculator.Add("5"));
}
public void Add_EmptyStringAsParam_ReturnsZero()
{
Assert.AreEqual(0, StringCalculator.Add(string.Empty));
}
public int CalculateNumbers(string numbers)
{
int result = addCalculator.Add(numbers);
return(result);
}