The Absolute Beginners Inc. seems to have been fascinated by your work. Recently they have entrusted you with a task of writing a web-based mathematical software (using JavaScript). As part of this software, your team mate has written a small module, which computes area of simple geometric shapes. A portion of the module is shown below.

function square(side) { return side * side }

function rectangle(side1, side2) { return side1 * side2; }

function circle(radius) { return Math.PI * radius * radius; }

function right_triangle(base, height) { return 1 / 2 * base * height; }

Prepare a test suite that will

• Verify each of the above mentioned individual function is working correctly

Your task essentially is to verify whether each of the above function is returning correct values for given inputs. For example, a rectangle with length 10 unit and breadth 5 unit will have an area of 50 sq. unit. This can be verified from the output of the function call
rectangle(10, 5);
However, testing also attempts to point out possible bugs in the software. How would the above code behave for a call
rectangle(10, -5);

Modify the code to address this defect.

• In each function, return -1 if any given dimension is negative
• Modify the test suite such that it reflects desired performance for both correct and incorrect input(s)
• The code has another bug -- how would you identify it from testing results? Fix the bug and test it again.

Learning Objectives:

• Get familiarized with unit testing
• Verify implementation of functional requirements by writing test cases
• Analyze results of testing to ascertain the current state of a project

Limitations: This workspace attempts to provide a very simple version of a testing framework. Real life testing frameworks are much more extensive and provide a lot of options like creating test cases from user requirements, automatic reporting of bug when a test case fails, and so on. Nevertheless, this workspace is expected to make a student familiar to testing and some of it's templates and reports.