✨ add Cypress tests

cypress.json

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

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/first-test.js

@@ -0,0 +1,8 @@
+/* globals cy */
+
+describe('Homepage', () => {
+  it('should perform basic google search', () => {
+    cy.visit('/');
+    cy.get('#count').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 +1,25 @@
+// ***********************************************
+// 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

@@ -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')

package.json

@@ -7,7 +7,9 @@
   "author": "Antistatique",
   "license": "MIT",
   "scripts": {
-    "lint:js": "eslint --ext js,jsx,ts,tsx ./ --max-warnings=0"
+    "lint:js": "eslint --ext js,jsx,ts,tsx ./ --max-warnings=0",
+    "cypress:open": "cypress open",
+    "cypress:run": "cypress run"
   },
   "devDependencies": {
     "@testing-library/jest-dom": "^5.11.2",
@@ -16,6 +18,7 @@
     "@typescript-eslint/eslint-plugin": "^3.8.0",
     "@typescript-eslint/parser": "^3.8.0",
     "babel-eslint": "^10.1.0",
+    "cypress": "^4.12.1",
     "eslint": "^7.2.0",
     "eslint-config-airbnb-typescript": "^9.0.0",
     "eslint-config-prettier": "^6.11.0",

playground/src/components/Counter/Counter.tsx

@@ -15,7 +15,9 @@ const Counter = (): JSX.Element => {
       >
         -
       </button>
-      <span tw="px-4 font-bold text-2xl">{count}</span>
+      <span id="count" tw="px-4 font-bold text-2xl">
+        {count}
+      </span>
       <button
         type="button"
         onClick={() => setCount(i => i + 1)}

playground/tsconfig.json

@@ -17,7 +17,8 @@
     "resolveJsonModule": true,
     "skipLibCheck": true,
     "strict": true,
-    "target": "esnext"
+    "target": "esnext",
+    "types": ["cypress"],
   },
   "exclude": ["node_modules"],
   "files": ["./src/types/twin.d.ts"],

tsconfig.json

@@ -0,0 +1,31 @@
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "alwaysStrict": true,
+    "baseUrl": "src",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "lib": ["dom", "es2017"],
+    "module": "esnext",
+    "moduleResolution": "node",
+    "noEmit": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": false,
+    "noUnusedParameters": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "target": "esnext",
+    "types": ["cypress"],
+  },
+  "exclude": ["node_modules"],
+  "files": ["./src/types/twin.d.ts"],
+  "include": [
+    "./**/*.ts",
+    "./**/*.tsx",
+    "./**/*.js",
+    "./**/*.jsx"
+  ]
+}