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Start your free trialLone Nielsen
13,764 Pointsneed help.. Can't find a solution
Implement the Subtract method so that the test passes.
public class Calculator
{
public double Result;
public Calculator(double number)
{
Result = number;
}
public void Add(double number)
{
Result += number;
}
public void Substract(double number)
{
Result -= number;
}
}
using Xunit;
public class CalculatorTests
{
[Fact]
public void Initialization()
{
var expected = 1.1;
var target = new Calculator(1.1);
Assert.Equal(expected, target.Result, 1);
}
[Fact]
public void BasicAdd()
{
var target = new Calculator(1.1);
target.Add(2.2);
var expected = 3.3;
Assert.Equal(expected, target.Result, 1);
}
[Fact]
public void BasicSubtract()
{
var target = new Calculator(1.1);
target.Subtract(0.2);
var expected = 0.9;
Assert.Equal(expected, target.Result, 1);
}
}
2 Answers
Steven Parker
231,198 PointsYou're really close, but you you have a little spelling/typo error.
You have "Substract" (with an extra "s") instead of "Subtract".
Carel Du Plessis
Courses Plus Student 16,356 PointsCan someone please explain what the last parameter (1) does in this piece of code Assert.Equal(expected, target.Result, 1);.
I have looked at the documentation and found only two object passed in as the parameter.