AUTOMATE AND ORGANIZE TESTS Setup, Exercise, and Verify In this exercise you will be separating a test into setup, exercise, and verify phases. This distinct and well-defined separation of steps makes your test more reliable, maintainable, and expressive. The phases are defined as follows: Setup - create objects, variables, and set conditions th…

Setup, Exercise, and Verify

**Setup, Exercise, and Verify**

- In this exercise you will be separating a test into setup, exercise, and verify phases. This distinct and well-defined separation of steps makes your test more reliable, maintainable, and expressive.

- The phases are defined as follows:

	+ Setup - create objects, variables, and set conditions that your test depends on;
	+ Exercise - execute the functionality you are testing;
	+ Verify - check your expectations against the result of the exercise phase. You can use the assert library here.

- Clear separation of each phase makes a test easier to read, change, and validate.

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`
const assert = require('assert');

// Naive approach
describe('.pop', () => {
  it('returns the last element in the array [naive]', () => {
    assert.ok(['padawan', 'knight'].pop() === 'knight'); 
  });
});

// 3 phase approach
describe('.pop', () => {
  it('returns the last element in the array [3phase]', () => {
    // Setup
    const knightString = 'knight';
    const jediPath = ['padawan', knightString];

    // Exercise
    const popped = jediPath.pop();

    // Verify
    assert.ok.popped === knightString;
  });
});

`