feat: add jest and initial tests for masking values

.env.test

@@ -0,0 +1,37 @@
+ADOBE_SCRIPT_SRC="test"
+API_BASEURL="test"
+CMS_ENVIRONMENT="test"
+CMS_ACCESS_TOKEN="test"
+AUTH_URL="test"
+CMS_API_KEY="test"
+CMS_PREVIEW_TOKEN="test"
+CMS_PREVIEW_URL="test"
+CMS_URL="test"
+CURITY_CLIENT_ID_SERVICE="test"
+CURITY_CLIENT_SECRET_SERVICE="test"
+CURITY_CLIENT_ID_USER="test"
+CURITY_CLIENT_SECRET_USER="test"
+CURITY_ISSUER_USER="test"
+CYPRESS_API_BASEURL="test"
+CYPRESS_CURITY_USERNAME="test"
+CYPRESS_CURITY_PASSWORD="test"
+CYPRESS_BASE_URL="test"
+DESIGN_SYSTEM_ACCESS_TOKEN="test"
+DEPLOY_PRIME_URL="test"
+NEXTAUTH_SECRET="test"
+PUBLIC_URL="test"
+NEXTAUTH_URL="test"
+REVALIDATE_SECRET="test"
+SEAMLESS_LOGIN_DA="test"
+SEAMLESS_LOGIN_DE="test"
+SEAMLESS_LOGIN_EN="test"
+SEAMLESS_LOGIN_FI="test"
+SEAMLESS_LOGIN_NO="test"
+SEAMLESS_LOGIN_SV="test"
+SEAMLESS_LOGOUT_DA="test"
+SEAMLESS_LOGOUT_DE="test"
+SEAMLESS_LOGOUT_EN="test"
+SEAMLESS_LOGOUT_FI="test"
+SEAMLESS_LOGOUT_NO="test"
+SEAMLESS_LOGOUT_SV="test"
+WEBVIEW_ENCRYPTION_KEY="test"

components/MyProfile/CreditCards/creditCards.module.css

@@ -1,18 +0,0 @@
-.container {
-  align-items: center;
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-}
-
-.card {
-  margin-top: 2rem;
-  display: grid;
-  grid-template-columns: repeat(2, 1fr);
-  grid-template-rows: repeat(3, auto);
-  gap: 0.5rem;
-}
-
-.subTitle {
-  grid-column: span 2;
-}

components/MyProfile/CreditCards/index.tsx

@@ -1,34 +0,0 @@
-import { serverClient } from "@/lib/trpc/server"
-
-import Card from "@/components/MyProfile/Card"
-import Subtitle from "@/components/TempDesignSystem/Text/Subtitle"
-import Title from "@/components/TempDesignSystem/Text/Title"
-import { getIntl } from "@/i18n"
-
-import styles from "./creditCards.module.css"
-
-export default async function CreditCards() {
-  const creditCards = await serverClient().user.creditCards()
-  if (!creditCards) {
-    return null
-  }
-  const { formatMessage } = await getIntl()
-  return (
-    <Card className={styles.container}>
-      <Title level="h4">{formatMessage({ id: "My credit cards" })}</Title>
-      {creditCards.map((card, idx) => (
-        <div className={styles.card} key={idx}>
-          <Subtitle className={styles.subTitle}>
-            Name: {card.attribute.cardName}
-          </Subtitle>
-          <span> Type: {card.attribute.cardType} </span>
-          <span> Alias: {card.attribute.alias}</span>
-          <span> Number: {card.attribute.truncatedNumber}</span>
-          <span>
-            Expiration Date: {card.attribute.expirationDate.split("T")[0]}
-          </span>
-        </div>
-      ))}
-    </Card>
-  )
-}

jest.config.ts

@@ -0,0 +1,207 @@
+/**
+ * For a detailed explanation regarding each configuration property, visit:
+ * https://jestjs.io/docs/configuration
+ */
+import nextJest from "next/jest.js"
+
+import type { Config } from "jest"
+
+const createJestConfig = nextJest({
+  // Provide the path to your Next.js app to load next.config.js and .env files in your test environment
+  dir: "./",
+})
+
+const config: Config = {
+  // All imported modules in your tests should be mocked automatically
+  // automock: false,
+
+  // Stop running tests after `n` failures
+  // bail: 0,
+
+  // The directory where Jest should store its cached dependency information
+  // cacheDirectory: "/private/var/folders/v8/61rbfxwx3jddjj8z_qxgm_tc0000gn/T/jest_dx",
+
+  // Automatically clear mock calls, instances, contexts and results before every test
+  clearMocks: true,
+
+  // Indicates whether the coverage information should be collected while executing the test
+  // collectCoverage: false,
+
+  // An array of glob patterns indicating a set of files for which coverage information should be collected
+  // collectCoverageFrom: undefined,
+
+  // The directory where Jest should output its coverage files
+  // coverageDirectory: undefined,
+
+  // An array of regexp pattern strings used to skip coverage collection
+  // coveragePathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // Indicates which provider should be used to instrument code for coverage
+  coverageProvider: "v8",
+
+  // A list of reporter names that Jest uses when writing coverage reports
+  // coverageReporters: [
+  //   "json",
+  //   "text",
+  //   "lcov",
+  //   "clover"
+  // ],
+
+  // An object that configures minimum threshold enforcement for coverage results
+  // coverageThreshold: undefined,
+
+  // A path to a custom dependency extractor
+  // dependencyExtractor: undefined,
+
+  // Make calling deprecated APIs throw helpful error messages
+  // errorOnDeprecated: false,
+
+  // The default configuration for fake timers
+  // fakeTimers: {
+  //   "enableGlobally": false
+  // },
+
+  // Force coverage collection from ignored files using an array of glob patterns
+  // forceCoverageMatch: [],
+
+  // A path to a module which exports an async function that is triggered once before all test suites
+  // globalSetup: undefined,
+
+  // A path to a module which exports an async function that is triggered once after all test suites
+  // globalTeardown: undefined,
+
+  // A set of global variables that need to be available in all test environments
+  // globals: {},
+
+  // The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
+  // maxWorkers: "50%",
+
+  // An array of directory names to be searched recursively up from the requiring module's location
+  // moduleDirectories: [
+  //   "node_modules"
+  // ],
+
+  // An array of file extensions your modules use
+  // moduleFileExtensions: [
+  //   "js",
+  //   "mjs",
+  //   "cjs",
+  //   "jsx",
+  //   "ts",
+  //   "tsx",
+  //   "json",
+  //   "node"
+  // ],
+
+  // A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
+  moduleNameMapper: {
+    "^@/(.*)$": "<rootDir>/$1",
+  },
+
+  // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
+  // modulePathIgnorePatterns: [],
+
+  // Activates notifications for test results
+  // notify: false,
+
+  // An enum that specifies notification mode. Requires { notify: true }
+  // notifyMode: "failure-change",
+
+  // A preset that is used as a base for Jest's configuration
+  // preset: undefined,
+
+  // Run tests from one or more projects
+  // projects: undefined,
+
+  // Use this configuration option to add custom reporters to Jest
+  // reporters: undefined,
+
+  // Automatically reset mock state before every test
+  // resetMocks: false,
+
+  // Reset the module registry before running each individual test
+  // resetModules: false,
+
+  // A path to a custom resolver
+  // resolver: undefined,
+
+  // Automatically restore mock state and implementation before every test
+  // restoreMocks: false,
+
+  // The root directory that Jest should scan for tests and modules within
+  // rootDir: undefined,
+
+  // A list of paths to directories that Jest should use to search for files in
+  // roots: [
+  //   "<rootDir>"
+  // ],
+
+  // Allows you to use a custom runner instead of Jest's default test runner
+  // runner: "jest-runner",
+
+  // The paths to modules that run some code to configure or set up the testing environment before each test
+  // setupFiles: [],
+
+  // A list of paths to modules that run some code to configure or set up the testing framework before each test
+  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
+
+  // The number of seconds after which a test is considered as slow and reported as such in the results.
+  // slowTestThreshold: 5,
+
+  // A list of paths to snapshot serializer modules Jest should use for snapshot testing
+  // snapshotSerializers: [],
+
+  // The test environment that will be used for testing
+  // testEnvironment: "jest-environment-node",
+
+  // Options that will be passed to the testEnvironment
+  // testEnvironmentOptions: {},
+
+  // Adds a location field to test results
+  // testLocationInResults: false,
+
+  // The glob patterns Jest uses to detect test files
+  // testMatch: [
+  //   "**/__tests__/**/*.[jt]s?(x)",
+  //   "**/?(*.)+(spec|test).[tj]s?(x)"
+  // ],
+
+  // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
+  // testPathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // The regexp pattern or array of patterns that Jest uses to detect test files
+  // testRegex: [],
+
+  // This option allows the use of a custom results processor
+  // testResultsProcessor: undefined,
+
+  // This option allows use of a custom test runner
+  // testRunner: "jest-circus/runner",
+
+  // A map from regular expressions to paths to transformers
+  // transform: undefined,
+
+  // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
+  // transformIgnorePatterns: [
+  //   "/node_modules/",
+  //   "\\.pnp\\.[^\\/]+$"
+  // ],
+
+  // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
+  // unmockedModulePathPatterns: undefined,
+
+  // Indicates whether each individual test should be reported during the run
+  // verbose: undefined,
+
+  // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
+  // watchPathIgnorePatterns: [],
+
+  // Whether to use watchman for file crawling
+  // watchman: true,
+}
+
+export default createJestConfig(config)

jest.setup.ts

@@ -0,0 +1 @@
+import "@testing-library/jest-dom"

package.json

@@ -4,7 +4,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "prebuild": "npm run update-dotenv && npm run lint",
+    "prebuild": "npm run update-dotenv && npm run lint && npm run test:unit",
     "build": "next build",
     "predev": "rm -rf .next",
     "dev": "PORT=3000 NEXT_PUBLIC_PORT=3000 next dev",
@@ -20,7 +20,9 @@
     "test:e2e:headless": "start-server-and-test test:setup http://127.0.0.1:3000/en/sponsoring \"cypress run --e2e\"",
     "test:setup": "npm run build && npm run start",
     "preinstall": "export $(cat .env.local | grep -v '^#' | xargs)",
-    "update-dotenv": "node update-dotenv.mjs"
+    "update-dotenv": "node update-dotenv.mjs",
+    "test:unit": "jest",
+    "test:unit:watch": "jest --watch"
   },
   "dependencies": {
     "@contentstack/live-preview-utils": "^1.4.0",
@@ -57,6 +59,9 @@
   },
   "devDependencies": {
     "@svgr/webpack": "^8.1.0",
+    "@testing-library/jest-dom": "^6.4.6",
+    "@testing-library/react": "^16.0.0",
+    "@types/jest": "^29.5.12",
     "@types/node": "^20",
     "@types/react": "^18",
     "@types/react-dom": "^18",
@@ -67,11 +72,14 @@
     "eslint-plugin-import": "^2.29.1",
     "eslint-plugin-simple-import-sort": "^12.1.0",
     "husky": "^9.0.11",
+    "jest": "^29.7.0",
+    "jest-environment-jsdom": "^29.7.0",
     "jiti": "^1.21.0",
     "lint-staged": "^15.2.2",
     "netlify-plugin-cypress": "^2.2.1",
     "prettier": "^3.2.5",
     "start-server-and-test": "^2.0.3",
+    "ts-node": "^10.9.2",
     "typescript": "^5",
     "typescript-plugin-css-modules": "^5.1.0"
   },

utils/maskValue.ts

@@ -1,15 +1,44 @@
-const emailRegex =
+function maskAllButFirstChar(str: string) {
-  /(?<=.)[^@\n](?=[^@\n]*?@)|(?:(?<=@.+)|(?!^)\G(?=[^@\n]*$)).(?=.*\.)/gm
+  const first = str[0]
+  const rest = str.substring(1)
+  const restMasked = "*".repeat(rest.length)
+
+  return `${first}${restMasked}`
+}
+
+function maskAllButLastTwoChar(str: string) {
+  const lastTwo = str.slice(-2)
+  const rest = str.substring(0, str.length - 2)
+  const restMasked = "*".repeat(rest.length)
+
+  return `${restMasked}${lastTwo}`
+}
+
 export function email(str: string) {
-  return str.replace(emailRegex, "*")
+  const parts = str.split("@")
+
+  const aliasMasked = maskAllButFirstChar(parts[0])
+
+  if (parts[1]) {
+    const domainParts = parts[1].split(".")
+    if (domainParts.length > 1) {
+      const domainTLD = domainParts.pop()
+      const domainPartsMasked = domainParts
+        .map((domainPart, i) => {
+          return maskAllButFirstChar(domainPart)
+        })
+        .join(".")
+      return `${aliasMasked}@${domainPartsMasked}.${domainTLD}`
+    }
+  }
+
+  return maskAllButFirstChar(str)
 }
 
-const phoneRegex = /.(?!.{0,1}$)/gm
 export function phone(str: string) {
-  return str.replace(phoneRegex, "*")
+  return maskAllButLastTwoChar(str)
 }
 
-const textRegex = /(?!^)./gm
 export function text(str: string) {
-  return str.replace(textRegex, "*")
+  return maskAllButFirstChar(str)
 }

utils/maskvalue.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, test } from "@jest/globals"
+
+import { email, phone, text } from "./maskValue"
+
+describe("Mask value", () => {
+  test("masks e-mails properly", () => {
+    expect(email("test@example.com")).toBe("t***@e******.com")
+    expect(email("test@sub.example.com")).toBe("t***@s**.e******.com")
+    expect(email("test_no_atexample.com")).toBe("t********************")
+    expect(email("test_no_dot@examplecom")).toBe("t*********************")
+    expect(email("test_no_at_no_dot_com")).toBe("t********************")
+  })
+
+  test("masks phone number properly", () => {
+    expect(phone("0000000000")).toBe("********00")
+  })
+
+  test("masks text strings properly", () => {
+    expect(text("test")).toBe("t***")
+    expect(text("test.with.dot")).toBe("t************")
+  })
+})