MATLAB Programming Fundamentals - MathWorks

Test: Small angle approximation

You can include equations and images in your live script to help document the test. Create

the following test for the small angle approximation. Typically, when you compare

floating-point values, you specify a tolerance for the comparison.

The rightTri function should return values consistent with the small angle

approximation, such that sin(θ)≈θ.

angles = rightTri([1 1500]);

smallAngleInRadians = (pi/180)*angles(1); % convert to radians

approx = sin(smallAngleInRadians);

assert(abs(approx-smallAngleInRadians) <= 1e-10, 'Problem with small angle approximation')

Test: Sum of Angles

∑

k

ak= 180∘

You can have multiple assert statements in the same test. However, if the first assertion

fails, the MATLAB does not evaluate the remaining statements.

The sum of all angles of the resulting right triangle should always be 180 degrees.

angles = rightTri([7 9]);

assert(sum(angles) == 180)

angles = rightTri([4 4]);

assert(sum(angles) == 180)

angles = rightTri([2 2*sqrt(3)]);

assert(sum(angles) == 180)

Test: 30-60-90 triangle

33 Unit Testing