Test the log in user flow

Author: winkerVSbecks

cypress.json

@@ -0,0 +1,3 @@
+{
+  "baseUrl": "http://localhost:3000"
+}

cypress/fixtures/example.json

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+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

cypress/integration/auth.spec.js

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+/* eslint-disable no-undef */
+import { Default as TaskListDefault } from '../../src/components/TaskList.stories';
+
+describe('The Login Page', () => {
+  beforeEach(() => {
+    cy.intercept('POST', '/authenticate', {
+      statusCode: 201,
+      body: {
+        user: {
+          name: 'Alice Carr',
+          token:
+            'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c',
+        },
+      },
+    });
+
+    cy.intercept('GET', '/tasks', {
+      statusCode: 201,
+      body: TaskListDefault.args,
+    });
+  });
+
+  it('user can authenticate using the login form', () => {
+    const email = 'alice.carr@test.com';
+    const password = 'k12h1k0$5;lpa@Afn';
+
+    cy.visit('/');
+
+    // Fill out the form
+    cy.get('input[name=email]').type(email);
+    cy.get('input[name=password]').type(`${password}`);
+
+    // Click the sign-in button
+    cy.get('button[type=submit]').click();
+
+    // UI should display the user's task list
+    cy.get('[aria-label="tasks"] li').should('have.length', 6);
+  });
+});

cypress/plugins/index.js

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+/// <reference types="cypress" />
+// ***********************************************************
+// This example plugins/index.js can be used to load plugins
+//
+// You can change the location of this file or turn off loading
+// the plugins file with the 'pluginsFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/plugins-guide
+// ***********************************************************
+
+// This function is called when a project is opened or re-opened (e.g. due to
+// the project's config changing)
+
+/**
+ * @type {Cypress.PluginConfig}
+ */
+// eslint-disable-next-line no-unused-vars
+module.exports = (on, config) => {
+  // `on` is used to hook into various events Cypress emits
+  // `config` is the resolved Cypress config
+}

cypress/support/commands.js

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+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })

cypress/support/index.js

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+// ***********************************************************
+// This example support/index.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

package.json

@@ -23,7 +23,8 @@
     "eject": "react-scripts eject",
     "storybook": "start-storybook -p 6006",
     "build-storybook": "build-storybook",
-    "test-storybook": "test-storybook"
+    "test-storybook": "test-storybook",
+    "cypress": "cypress open"
   },
   "eslintConfig": {
     "extends": [
@@ -68,6 +69,7 @@
     "@storybook/test-runner": "^0.1.0",
     "@storybook/testing-library": "^0.0.11",
     "axe-playwright": "^1.1.11",
+    "cypress": "^9.6.1",
     "msw": "^0.40.0",
     "msw-storybook-addon": "^1.6.3"
   },

src/LoginScreen.stories.js

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+import React from 'react';
+import { rest } from 'msw';
+import { LoginScreen } from './LoginScreen';
+import { Default as TaskListDefault } from './components/TaskList.stories';
+
+export default {
+  component: LoginScreen,
+  title: 'LoginScreen',
+  parameters: {
+    backgrounds: { default: 'white' },
+  },
+  argTypes: {
+    onLogIn: { action: 'onLogIn' },
+  },
+};
+
+const Template = (args) => <LoginScreen {...args} />;
+
+export const Default = Template.bind({});
+Default.parameters = {
+  msw: [
+    rest.get('/tasks', (req, res, ctx) => {
+      return res(ctx.json(TaskListDefault.args));
+    }),
+  ],
+};