title: How to prepare Db before cypress tests?
body: <p>I'm using cypress to test my backend node api.</p>
  
  <p>I would like to reset my Db to a clean state in my before function. This involves using axios (therefore receiving promises) to send post, put &amp; delete requests to my json-server "db".</p>
  
  <p>I'm familiar with the commands file of cypress (already using it for my login function), but I don't seem to manage to make it work for my "reset db" behavior.</p>
  
  <p>I therefore simplified the problem until posting my user in the "it" function, but it still does not work</p>
  
  <p>cypress test:</p>
  
  <pre class="lang-js prettyprint-override"><code>const axios = require('axios')
  
  describe('Auth', function() {
    beforeEach(function() {
      cy.visit('http://localhost:8080')
    })
  
    describe('login with non existing user', function() {
      it('should show an error message', function() {      
        cy.login('non.existing.user@example.com', 'password')
        cy.get('#app &gt; div.container &gt; div &gt; div &gt; div &gt; div &gt; div &gt; form &gt; div.alert.form-group.alert-danger')
          .should('have.text', 'Invalid Credentials')
      })
    })
  
  
    describe('login with an invalid password', function() {
      it('should show an error message', async function() {
        cy.putUserToDb('existingUser', 'existing.user@test.test', 'Existing User', 'password')
        cy.login('existing.user@test.test', 'pass')
        cy.get('#app &gt; div.container &gt; div &gt; div &gt; div &gt; div &gt; div &gt; form &gt; div.alert.form-group.alert-danger')
          .should('have.text', 'Invalid Credentials')
      })
    })
  })
  </code></pre>
  
  <p>cypress commands:</p>
  
  <pre><code>const axios = require('axios')
  const bcrypt = require('bcrypt')
  
  Cypress.Commands.add("login", (email, password) =&gt; {
    cy.contains('Log In')
      .click()
    cy.url()
      .should('include', '/signin')
    cy.get('#app &gt; div.container &gt; div &gt; div &gt; div &gt; div &gt; div &gt; form &gt; div:nth-child(1) &gt; input')
      .clear()
      .type(email)
      .should('have.value', email)
    cy.get('#app &gt; div.container &gt; div &gt; div &gt; div &gt; div &gt; div &gt; form &gt; div:nth-child(2) &gt; input')
      .clear()
      .type(password)
      .should('have.value', password)
    cy.get('#app &gt; div.container &gt; div &gt; div &gt; div &gt; div &gt; div &gt; form &gt; div:nth-child(3) &gt; button')
      .click()
  })
  
  Cypress.Commands.add("putUserToDb", async (id, email, name, password) =&gt; {
    const jsonServerUrl = 'http://localhost:5000'
    console.log(`${jsonServerUrl}/users/${id}`)
    await axios
      .put(`${jsonServerUrl}/users/${id}`, {
        email: email,
        name: name,
        password: bcrypt.hashSync(password)
      })
  })
  </code></pre>
  
  <p>I get this error in cypress:</p>
  
  <pre><code>tests?p=cypress\integration\auth.js-872:37810 Uncaught Uncaught TypeError: Cannot read property '_handle' of undefined
  
  This error originated from your test code, not from Cypress.
  
  When Cypress detects uncaught errors originating from your test code it will automatically fail the current test.
  
  Cypress could not associate this error to any specific test.
  
  We dynamically generated a new test to display this failure.
  
  Check your console for the stack trace or click this message to see where it originated from.
      at http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:37810:16
      at Array.forEach (&lt;anonymous&gt;)
      at module.exports (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:37809:36)
      at Object.&lt;anonymous&gt; (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:35419:1)
      at Object.249._process (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:35719:4)
      at o (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:1:265)
      at http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:1:316
      at Object.&lt;anonymous&gt; (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:32284:11)
      at Object.242.../package.json (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:32473:4)
      at o (http://localhost:59099/__cypress/tests?p=cypress\integration\auth.js-872:1:265)
  </code></pre>
  
  <p>Would you know how to properly reset my Db before a set of tests?</p>
  
  <p>Thanks in advance!</p>