Cypress - Hooks

Cypress Hooks are used to carry out the certain operations prior/post every/each test.Some of the common hooks are as follows −

  • before − It is executed, once the prior execution of any tests within a describe block is carried out.

  • after − It is executed, once the post execution of all the tests within a describe block is carried out.

  • beforeEach − It is executed prior to the execution of an individual, it blocks within a describe block.

  • afterEach − It is executed post execution of the individual, it blocks within a describe block.

Implementation

The implementation of commands for the Cypress Hooks is explained below −

describe('Tutorialspoint', function() {
   before(function() {
      // executes once prior all tests in it block
      cy.log("Before hook")
   })
   after(function() {
      // executes once post all tests in it block
      cy.log("After hook")
   })
   beforeEach(function() {
      // executes prior each test within it block
      cy.log("BeforeEach hook")
   })
   afterEach(function() {
      // executes post each test within it block
      cy.log("AfterEac hook")
   })
   it('First Test', function() {
      cy.log("First Test")
   })
   it('Second Test', function() {
      cy.log("Second Test")
   })
})

Execution Results

The output is mentioned below −

Cypress Hooks

The output logs show that the first executed step is the BEFORE ALL.

The last executed step is the AFTER ALL. Both of them ran only once.

The step executed under BEFORE EACH ran twice (before each TEST BODY).

Also, step executed under AFTER EACH ran twice (after each TEST BODY).

Both the it blocks are executed in order, in which they are implemented.

TAG

Apart from hooks, Cypress has tags - .only and .skip.

While the .only tag is utilised to execute the it block to which it is tagged, the .skip tag is utilised to exclude the it block to which it is tagged.

Implementation with .only

The implementation of .only tag in Cypress is as follows −

describe('Tutorialspoint', function()
   //it block with tag .only
   it.only('First Test', function() {
      cy.log("First Test")
   })
   //it block with tag .only
   It.only('Second Test', function() {
      cy.log("Second Test")
   })
   it('Third Test', function() {
      cy.log("Third Test")
   })
})

Execution Results

The output is given below −

Cypress Has Tags

The output logs show that the it blocks (First and Second Test) with the .only tags only got executed.

Implementation with .skip

The implementation of .skip tag in Cypress is as follows −

describe('Tutorialspoint', function()
   it('First Test', function() {
      cy.log("First Test")
   })
   it('Second Test', function() {
      cy.log("Second Test")
   })
   //it block with tag .skip
   it.skip('Third Test', function() {
      cy.log("Third Test")
   })
})

Execution Results

The output is as follows −

Cypress Skip Tags

The output logs show that the it block (Third Test) with the .skip tag got skipped from the execution.

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