Question

I’m working on unit-tests for an application and below is a unit-test I just cant figure out why it fails.

The test result should be that “isosceles” is true and “equalateral” and “scalene” is false, which Console.WriteLine shows that they actually are, but by some strange reason the test fails anyhow. What am I doing wrong here? Thanks in advance.

I’m using the MSTest framework.

    public void isIsosceles()
    {
        Triangle triangle = new Triangle(2, 2, 5);

        var isosceles = triangle.isIsosceles();
        var equalateral = triangle.isEquilateral();
        var scalene = triangle.isScalene();

        Console.WriteLine(isosceles);       // True
        Console.WriteLine(equalateral);     // False
        Console.WriteLine(scalene);         // False

        Assert.IsTrue(true, "Test Isosceles", isosceles);
        Assert.IsTrue(false, "Test Equalateral", equalateral);    // Fails, why?
        Assert.IsTrue(false, "Test Scalene", scalene);            // Fails, why?
    }

Answer 1

You’re mis-calling IsTrue.
The first parameter is the boolean to test:

Assert.IsFalse(equalateral, "Test Equalateral");    

You can also call AreEqual:

Assert.AreEqual(false, equalateral, "Test Equalateral")