This code snippet is used in Testing JavaScript Code using Jasmine JavaScript Tutorial on SFDC Stop

calculatorspec.js

describe('Testing Calculator...', function() {

    // * Positive Test Cases
    it('Testing Add Function Positive', function() {
        expect(add(2, 2)).toBe(4);
    });

    it('Testing Sub Function Positive', function() {
        expect(sub(2, 2)).toBe(0);
    });

    it('Testing Mul Function Positive', function() {
        expect(mul(2, 2)).toBe(4);
    });

    it('Testing Div Function Positive', function() {
        expect(div(2, 2)).toBe(1);
    });

    // * Negative Test Cases
    it('Testing Add Function Negative', function() {
        expect(add(2, 2)).not.toBe(0);
    });

    it('Testing Sub Function Negative', function() {
        expect(sub(2, 2)).not.toBe(4);
    });

    it('Testing Mul Function Negative', function() {
        expect(mul(2, 2)).not.toBe(1);
    });

    it('Testing Div Function Negative', function() {
        expect(div(2, 2)).not.toBe(4);
    });

});