Synchronous Code

Example

Let us look at a complete example, including hooks to understand the concept of Synchronous Coding,

arrow.js

var assert = require('assert');
describe('hooks', function() {
  before(function() {
    console.log("Before Hook");
  });
  after(function() {
    console.log("After Hook");
  });
  beforeEach(function() {
    console.log("Before Each Hook");
  });
  afterEach(function() {
    console.log("After Each Hook");
  });
  describe('#indexOf()', function () {
    it('should return -1 when the value is not present in the array', function () {
      assert.equal([1, 2, 3].indexOf(4), -1);
    });
    it('should return 0 when the value is present in the array', function () {
      assert.equal([1, 2, 3].indexOf(1), 0);
    });
  });
});

In the above code, we are executing two tests, and we added all the hooks to demonstrate the functionality of each hook.

FAQs

1. What is Mocha?
   Mocha is one of the most important frameworks of Javascript for Node development. It is generally used for asynchronous testing and is compatible with all of the major libraries of Node.
    
2. What is Synchronous Coding?
   Synchronous Coding means running one line of code at a time. The code is executed one line at a time in the order that the codes appear.
    
3. What are Hook functions used for?
   Hooks are most commonly used to set preconditions and postconditions for a test. They are also used to clean up after the tests are executed.
    
4. Can we implement multiple beforeEach() hooks in a describe() block?
   Yes, we can implement multiple hooks of the same type in a describe() block. We can distinguish them on the basis of the description or the function name.
    
5. Are hooks synchronous or Asynchronous?
   All the hooks in Mocha can be both synchronous and asynchronous. They behave a lot like regular test cases in any programming language.
    

Key Takeaways

This Blog covered all the necessary points about Synchronous Coding in Mocha. We further discussed the basics of Mocha. Finally, we looked at examples of Synchronous Coding in Mocha.

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