Jasmine Best Practices

// GoodTestSpec.js
/**
 * Describe the purpose of this test suite here.
 */

// give a meaningful name for the test suite.
// only "ONE" top level test suite per file.
describe('Good test suite', function () {
    // define "ALL" the values that needs to be accessed across test cases
    // Else use `this` keyword. But follow one approach. If `this` is used, don't define values here.
    var foo = null,
        bar = null,
        numberOne = null;

    // initialize "ALL" values above to their desired default value, in this block "beforeEach"
    beforeEach(function () {
        foo = null;
        bar = null;
        numberOne = 1;

        // Using `this` approach. Pick one that suits the Test Suite.
        this.moo = null;
    });

    // a spec (test case) should test only "ONE" expectation
    it('should check foo to be null', function () {
        // ....
        expect(foo).toBe(null);
    });

    // another spec
    it('should check numberOne to equal 1', function () {
        // call fail() if something is not right and want to fail the test
        // fail('woops! not correct state.');

        expect(numberOne).toEqual(1);
    });

    // Group the main test suite with sub test suites to group sections.
    // The title should be descriptive.
    describe('that is magnificent', function () {

        // Test name will read as "Good test suite that is magnificent should check 42 to is 42"
        it('should check 42 is 42', function () {
            expect(42).toEqual(42);
        });
    });
});