Add Cypress e2e tests

Author: jmarceli

.circleci/config.yml

@@ -1,7 +1,26 @@
 version: 2.1
 
 jobs:
-  run_tests:
+  run_e2e_tests:
+    docker:
+      - image: cypress/browsers:node10.16.0-chrome77
+        environment:
+          TERM: xterm
+    steps:
+      - checkout
+      - run:
+          command: npm install
+      - run:
+          command: cd example && npm install
+      - run:
+          command: cd example && npm start
+          background: true
+      - run:
+          command: npx wait-on -d 60000 http://localhost:3000
+      - run:
+          command: npm run ci:cypress
+
+  run_integration_and_unit_tests:
     docker:
       - image: circleci/node:10.18.1
         environment:
@@ -16,4 +35,5 @@ jobs:
 workflows:
   tests:
     jobs:
-      - run_tests
+      - run_integration_and_unit_tests
+      - run_e2e_tests

.gitignore

@@ -22,3 +22,7 @@ yarn-error.log*
 
 # coverage report
 coverage
+
+# cypress
+cypress/examples
+cypress/videos

cypress.json

@@ -0,0 +1,6 @@
+{
+  "baseUrl": "http://localhost:3000",
+  "pageLoadTimeout": 180000,
+  "projectId": "fsyzwo",
+  "chromeWebSecurity": false
+}

cypress/fixtures/example.json

@@ -0,0 +1,5 @@
+{
+  "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/marker.spec.js

@@ -0,0 +1,17 @@
+describe("react-hook-google-maps", () => {
+  before(() => {
+    cy.visit("/");
+  });
+  it("renders Google Maps one with a marker", () => {
+    cy.findAllByText("This page can't load Google Maps correctly.").should(
+      "have.length",
+      2,
+    );
+    cy.findAllByText("OK").click({ multiple: true });
+    cy.queryAllByText("This page can't load Google Maps correctly.").should(
+      "not.exist",
+    );
+    // map marker can be selected with document.querySelectorAll("img[usemap='#gmimap0']");
+    cy.get("img[usemap='#gmimap0']").should("have.length", 1);
+  });
+});

cypress/plugins/index.js

@@ -0,0 +1,17 @@
+// ***********************************************************
+// 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)
+
+module.exports = (on, config) => {
+  // `on` is used to hook into various events Cypress emits
+  // `config` is the resolved Cypress config
+}

cypress/support/commands.js

@@ -0,0 +1,28 @@
+// ***********************************************
+// 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 is will overwrite an existing command --
+// Cypress.Commands.overwrite("visit", (originalFn, url, options) => { ... })
+
+// install cypress-testing-library
+import '@testing-library/cypress/add-commands';

cypress/support/index.js

@@ -0,0 +1,20 @@
+// ***********************************************************
+// 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')