Skip to Content
Learning TypeScript 2.x - Second Edition
book

Learning TypeScript 2.x - Second Edition

by Remo H. Jansen
April 2018
Beginner content levelBeginner
536 pages
13h 21m
English
Packt Publishing
Content preview from Learning TypeScript 2.x - Second Edition

Working with tests suites

A test suite is a group of test cases. We have already learned that we can use the describe function from Mocha to define a test suite and the it function to define a test case. However, we have not learned that we can define event handlers that can be invoked before and after all the tests in a test suite. The following code snippet demonstrates how we can define these event handlers:

describe("My test suite", () => { 
 
  before(() => { 
    // Invoked once before ALL tests 
  }); 
 
  after(() => { 
    // Invoked once after ALL tests 
  }); 
 
  beforeEach(() => { 
    // Invoked once before EACH test 
  }); 
 
  afterEach(() => { 
    // Invoked once before EACH test 
  }); 
 
  it(() => { 
    // Test case 
  }); 
  
}); 

This can be useful if we want to reuse some of the initialization ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Mastering TypeScript - Fourth Edition

Mastering TypeScript - Fourth Edition

Nathan Rozentals
Learning TypeScript

Learning TypeScript

Josh Goldberg
TypeScript for Beginners

TypeScript for Beginners

Bharath Thippireddy

Publisher Resources

ISBN: 9781788391474Supplemental Content