test: Add simple test to make yarn test pass

`yarn test` requires at least one test to pass but we removed all tests
that were related to Search

jest-setup.ts

@@ -1 +1,2 @@
 import '@testing-library/jest-dom';
+import 'cross-fetch/polyfill';

jest.config.ts

@@ -26,6 +26,8 @@ export default {
     '\\.(css|less|scss|sass)$': '<rootDir>/tests/__mocks__/styleMock.js',
     "^@/(.*)$": "<rootDir>/src/$1",
     "^manifest.webapp$": ["<rootDir>/manifest.webapp"],
+    // Force module uuid to resolve with the CJS entry point, because Jest does not support package.json.exports. See https://github.com/uuidjs/uuid/issues/451
+    "uuid": require.resolve('uuid'),
   },
   resetMocks: true
 };

package.json

@@ -43,6 +43,7 @@
     "@types/sharedworker": "^0.0.126",
     "@typescript-eslint/eslint-plugin": "^7.1.0",
     "@typescript-eslint/parser": "^7.1.0",
+    "cross-fetch": "^4.0.0",
     "eslint": "8.57.1",
     "eslint-config-prettier": "9.1.0",
     "eslint-plugin-import": "2.29.1",

src/helpers/client.spec.ts

@@ -0,0 +1,41 @@
+import CozyClient from 'cozy-client'
+import PouchLink from 'cozy-pouch-link'
+import { LinkPlatform } from 'cozy-pouch-link/types/types'
+
+import { getPouchLink } from '@/helpers/client'
+
+test('should retrieve PouchLink from client', () => {
+  const pouchLinkOptions = {
+    doctypes: ['io.cozy.files'],
+    initialSync: true,
+    periodicSync: false,
+    platform: {} as LinkPlatform,
+    doctypesReplicationOptions: {
+      'io.cozy.files': {
+        strategy: 'fromRemote'
+      }
+    }
+  }
+  const pouchLink = new PouchLink(pouchLinkOptions)
+  const client = new CozyClient({
+    links: [pouchLink]
+  })
+
+  const result = getPouchLink(client)
+
+  expect(result).toBe(pouchLink)
+})
+
+test('should return null if no client', () => {
+  const result = getPouchLink(undefined)
+
+  expect(result).toBe(null)
+})
+
+test('should return null if no PouchLink found', () => {
+  const client = new CozyClient()
+
+  const result = getPouchLink(client)
+
+  expect(result).toBe(null)
+})

src/helpers/client.ts

@@ -1,7 +1,7 @@
 import CozyClient from 'cozy-client'
 import PouchLink from 'cozy-pouch-link'
 
-export const getPouchLink = (client: CozyClient): PouchLink | null => {
+export const getPouchLink = (client?: CozyClient): PouchLink | null => {
   if (!client) {
     return null
   }

yarn.lock

@@ -2382,6 +2382,13 @@ create-require@^1.1.0:
   resolved "https://registry.yarnpkg.com/create-require/-/create-require-1.1.1.tgz#c1d7e8f1e5f6cfc9ff65f9cd352d37348756c333"
   integrity sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==
 
+cross-fetch@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-4.0.0.tgz#f037aef1580bb3a1a35164ea2a848ba81b445983"
+  integrity sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==
+  dependencies:
+    node-fetch "^2.6.12"
+
 cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
@@ -4807,7 +4814,7 @@ [email protected]:
   dependencies:
     whatwg-url "^5.0.0"
 
-node-fetch@^2.6.1:
+node-fetch@^2.6.1, node-fetch@^2.6.12:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.7.0.tgz#d0f0fa6e3e2dc1d27efcd8ad99d550bda94d187d"
   integrity sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==