chore(api): migrate tests to Vitest v4 (#65950)

api/package.json

@@ -51,7 +51,7 @@
     "@types/nodemailer": "6.4.22",
     "@types/supertest": "2.0.16",
     "@types/validator": "13.15.10",
-    "@vitest/ui": "^3.2.4",
+    "@vitest/ui": "^4.0.15",
     "dotenv-cli": "7.4.4",
     "eslint": "^9.39.1",
     "eslint-plugin-jsdoc": "48.11.0",
@@ -60,7 +60,7 @@
     "supertest": "6.3.3",
     "tsx": "4.21.0",
     "typescript": "5.9.3",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.15"
   },
   "engines": {
     "node": ">=24",

api/src/exam-environment/utils/exam-environment.test.ts

@@ -1,4 +1,5 @@
 import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';
+import type { MockInstance } from 'vitest';
 import {
   ExamEnvironmentAnswer,
   ExamEnvironmentQuestionType
@@ -29,7 +30,7 @@ import {
 //       generate a valid exam.
 //       Another option is to call `generateExam` hundreds of times in a loop test :shrug:
 describe('Exam Environment mocked Math.random', () => {
-  let spy: ReturnType<typeof vi.spyOn>;
+  let spy: MockInstance;
   beforeAll(() => {
     spy = vi.spyOn(Math, 'random').mockReturnValue(0.123456789);
   });

api/src/routes/helpers/auth-helpers.test.ts

@@ -50,8 +50,8 @@ describe('findOrCreateUser', () => {
   afterEach(async () => {
     await fastify.prisma.user.deleteMany({ where: { email } });
     await fastify.prisma.dripCampaign.deleteMany({ where: { email } });
-    await fastify.close();
+    vi.restoreAllMocks();
-    vi.clearAllMocks();
+    captureException.mockReset();
   });
 
   test('should send a message to Sentry if there are multiple users with the same email', async () => {
@@ -130,9 +130,10 @@ describe('findOrCreateUser', () => {
     test('should not prevent user creation if drip campaign record creation fails', async () => {
       vi.spyOn(fastify.gb, 'isOn').mockImplementationOnce(() => true);
 
-      // Mock dripCampaign.create to throw an error
+      const originalCreate = fastify.prisma.dripCampaign.create;
-      const createSpy = vi
+
-        .spyOn(fastify.prisma.dripCampaign, 'create')
+      fastify.prisma.dripCampaign.create = vi
+        .fn()
         .mockRejectedValueOnce(new Error('Database error'));
 
       const user = await findOrCreateUser(fastify, email);
@@ -140,7 +141,6 @@ describe('findOrCreateUser', () => {
       expect(user).toBeDefined();
       expect(user.id).toBeTruthy();
 
-      // Verify error was captured by Sentry
       expect(captureException).toHaveBeenCalledTimes(1);
       expect(captureException).toHaveBeenCalledWith(
         expect.objectContaining({
@@ -148,7 +148,7 @@ describe('findOrCreateUser', () => {
         })
       );
 
-      createSpy.mockRestore();
+      fastify.prisma.dripCampaign.create = originalCreate;
     });
 
     test('should not create drip campaign for existing users', async () => {

api/src/routes/protected/certificate.test.ts

@@ -424,11 +424,10 @@ describe('certificate routes', () => {
           }
         });
 
-        vi.spyOn(fastifyTestInstance.prisma.user, 'update').mockImplementation(
+        vi.spyOn(fastifyTestInstance.prisma, 'user', 'get').mockReturnValue({
-          () => {
+          ...fastifyTestInstance.prisma.user,
-            throw new Error('test');
+          update: vi.fn().mockRejectedValueOnce(new Error('test'))
-          }
+        });
-        );
 
         const response = await superRequest('/certificate/verify', {
           method: 'PUT',

api/src/routes/protected/challenge.test.ts

@@ -378,11 +378,17 @@ describe('challengeRoutes', () => {
       // function with undefined when restoring a prisma function (for some
       // reason)
       test('Should return an error response if something goes wrong', async () => {
+        const originalUserToken = fastifyTestInstance.prisma.userToken;
+
         vi.spyOn(
-          fastifyTestInstance.prisma.userToken,
+          fastifyTestInstance.prisma,
-          'findUnique'
+          'userToken',
-        ).mockImplementationOnce(() => {
+          'get'
-          throw new Error('Database error');
+        ).mockReturnValue({
+          ...originalUserToken,
+          findUnique: vi.fn().mockImplementationOnce(() => {
+            throw new Error('Database error');
+          })
         });
         const tokenResponse = await superPost('/user/user-token');
         const token = (tokenResponse.body as { userToken: string }).userToken;

api/src/routes/protected/donate.test.ts

@@ -124,30 +124,31 @@ const generateMockSubCreate = (status: string) => () =>
 const defaultError = () =>
   Promise.reject(new Error('Stripe encountered an error'));
 
-vi.mock('stripe', () => {
+vi.mock('stripe', () => ({
-  return {
+  default: class {
-    default: vi.fn().mockImplementation(() => {
+    constructor() {}
-      return {
+
-        customers: {
+    customers = {
-          create: mockCustomerCreate,
+      create: mockCustomerCreate,
-          update: mockCustomerUpdate
+      update: mockCustomerUpdate
-        },
+    };
-        paymentMethods: {
+
-          attach: mockAttachPaymentMethod
+    paymentMethods = {
-        },
+      attach: mockAttachPaymentMethod
-        subscriptions: {
+    };
-          create: mockSubCreate,
+
-          retrieve: mockSubRetrieve
+    subscriptions = {
-        },
+      create: mockSubCreate,
-        checkout: {
+      retrieve: mockSubRetrieve
-          sessions: {
+    };
-            create: mockCheckoutSessionCreate
+
-          }
+    checkout = {
-        }
+      sessions: {
-      };
+        create: mockCheckoutSessionCreate
-    })
+      }
-  };
+    };
-});
+  }
+}));
 
 describe('Donate', () => {
   let setCookies: string[];

api/src/routes/protected/settings.test.ts

@@ -602,16 +602,17 @@ Please wait 5 minutes to resend an authentication link.`
       // function with undefined when restoring a prisma function (for some
       // reason)
       test('PUT sends an email to the new email address', async () => {
+        const originalAuthToken = fastifyTestInstance.prisma.authToken;
         vi.spyOn(
-          fastifyTestInstance.prisma.authToken,
+          fastifyTestInstance.prisma,
-          'create'
+          'authToken',
-        ).mockImplementationOnce(() =>
+          'get'
-          // @ts-expect-error This is a mock implementation, all we're
+        ).mockReturnValue({
-          // interested in is the id.
+          ...originalAuthToken,
-          Promise.resolve({
+          create: vi.fn().mockResolvedValue({
             id: '123'
           })
-        );
+        });
         await superPut('/update-my-email').send({
           email: unusedEmailOne
         });

api/src/routes/public/donate.test.ts

@@ -66,31 +66,27 @@ const generateMockSubCreate = (status: string) => () =>
       }
     }
   });
-vi.mock('stripe', () => {
+vi.mock('stripe', () => ({
-  return {
+  default: class {
-    default: vi.fn().mockImplementation(() => {
+    constructor() {}
-      return {
+    customers = {
-        customers: {
+      create: mockCustomerCreate,
-          create: mockCustomerCreate,
+      update: mockCustomerUpdate
-          update: mockCustomerUpdate
+    };
-        },
+    paymentMethods = {
-        paymentMethods: {
+      attach: mockAttachPaymentMethod
-          attach: mockAttachPaymentMethod
+    };
-        },
+    subscriptions = {
-        subscriptions: {
+      create: mockSubCreate,
-          create: mockSubCreate,
+      retrieve: mockSubRetrieve
-          retrieve: mockSubRetrieve
+    };
-        },
+    checkout = {
-        checkout: {
+      sessions: {
-          sessions: {
+        create: mockCheckoutSessionCreate
-            create: mockCheckoutSessionCreate
+      }
-          }
+    };
-        }
+  }
-      };
+}));
-    })
-  };
-});
-
 describe('Donate', () => {
   let setCookies: string[];
   setupServer();

pnpm-lock.yaml

@@ -217,8 +217,8 @@ importers:
         specifier: 13.15.10
         version: 13.15.10
       '@vitest/ui':
-        specifier: ^3.2.4
+        specifier: ^4.0.15
-        version: 3.2.4(vitest@3.2.4)
+        version: 4.0.15(vitest@4.0.15)
       dotenv-cli:
         specifier: 7.4.4
         version: 7.4.4
@@ -244,8 +244,8 @@ importers:
         specifier: 5.9.3
         version: 5.9.3
       vitest:
-        specifier: ^3.2.4
+        specifier: ^4.0.15
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@24.10.13)(@vitest/ui@3.2.4)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
+        version: 4.0.15(@opentelemetry/api@1.9.0)(@types/node@24.10.13)(@vitest/ui@4.0.15)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
 
   client:
     dependencies:
@@ -20769,15 +20769,6 @@ snapshots:
       chai: 6.2.2
       tinyrainbow: 3.0.3
 
-  '@vitest/mocker@3.2.4(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(vite@7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1))':
-    dependencies:
-      '@vitest/spy': 3.2.4
-      estree-walker: 3.0.3
-      magic-string: 0.30.17
-    optionalDependencies:
-      msw: 2.12.10(@types/node@24.10.13)(typescript@5.9.3)
-      vite: 7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
-
   '@vitest/mocker@3.2.4(msw@2.12.10(@types/node@25.2.3)(typescript@5.9.3))(vite@7.1.3(@types/node@25.2.3)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1))':
     dependencies:
       '@vitest/spy': 3.2.4
@@ -20860,7 +20851,7 @@ snapshots:
       sirv: 3.0.2
       tinyglobby: 0.2.14
       tinyrainbow: 2.0.0
-      vitest: 3.2.4(@types/debug@4.1.12)(@types/node@24.10.13)(@vitest/ui@3.2.4)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
+      vitest: 3.2.4(@types/debug@4.1.12)(@types/node@25.2.3)(@vitest/ui@3.2.4)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@25.2.3)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
 
   '@vitest/ui@4.0.15(vitest@4.0.15)':
     dependencies:
@@ -20871,7 +20862,7 @@ snapshots:
       sirv: 3.0.2
       tinyglobby: 0.2.15
       tinyrainbow: 3.0.3
-      vitest: 4.0.15(@opentelemetry/api@1.9.0)(@types/node@25.2.3)(@vitest/ui@4.0.15)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@25.2.3)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
+      vitest: 4.0.15(@opentelemetry/api@1.9.0)(@types/node@24.10.13)(@vitest/ui@4.0.15)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
 
   '@vitest/utils@3.2.4':
     dependencies:
@@ -30436,27 +30427,6 @@ snapshots:
       unist-util-stringify-position: 2.0.3
       vfile-message: 2.0.4
 
-  vite-node@3.2.4(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
-    dependencies:
-      cac: 6.7.14
-      debug: 4.4.1
-      es-module-lexer: 1.7.0
-      pathe: 2.0.3
-      vite: 7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
-    transitivePeerDependencies:
-      - '@types/node'
-      - jiti
-      - less
-      - lightningcss
-      - sass
-      - sass-embedded
-      - stylus
-      - sugarss
-      - supports-color
-      - terser
-      - tsx
-      - yaml
-
   vite-node@3.2.4(@types/node@25.2.3)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
     dependencies:
       cac: 6.7.14
@@ -30478,22 +30448,6 @@ snapshots:
       - tsx
       - yaml
 
-  vite@7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
-    dependencies:
-      esbuild: 0.25.9
-      fdir: 6.5.0(picomatch@4.0.3)
-      picomatch: 4.0.3
-      postcss: 8.5.6
-      rollup: 4.46.2
-      tinyglobby: 0.2.14
-    optionalDependencies:
-      '@types/node': 24.10.13
-      fsevents: 2.3.3
-      jiti: 2.6.1
-      terser: 5.46.0
-      tsx: 4.21.0
-      yaml: 2.8.1
-
   vite@7.1.3(@types/node@25.2.3)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
     dependencies:
       esbuild: 0.25.9
@@ -30580,50 +30534,6 @@ snapshots:
       - debug
       - typescript
 
-  vitest@3.2.4(@types/debug@4.1.12)(@types/node@24.10.13)(@vitest/ui@3.2.4)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
-    dependencies:
-      '@types/chai': 5.2.2
-      '@vitest/expect': 3.2.4
-      '@vitest/mocker': 3.2.4(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(vite@7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1))
-      '@vitest/pretty-format': 3.2.4
-      '@vitest/runner': 3.2.4
-      '@vitest/snapshot': 3.2.4
-      '@vitest/spy': 3.2.4
-      '@vitest/utils': 3.2.4
-      chai: 5.2.1
-      debug: 4.4.1
-      expect-type: 1.2.2
-      magic-string: 0.30.17
-      pathe: 2.0.3
-      picomatch: 4.0.3
-      std-env: 3.9.0
-      tinybench: 2.9.0
-      tinyexec: 0.3.2
-      tinyglobby: 0.2.14
-      tinypool: 1.1.1
-      tinyrainbow: 2.0.0
-      vite: 7.1.3(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
-      vite-node: 3.2.4(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
-      why-is-node-running: 2.3.0
-    optionalDependencies:
-      '@types/debug': 4.1.12
-      '@types/node': 24.10.13
-      '@vitest/ui': 3.2.4(vitest@3.2.4)
-      jsdom: 26.1.0
-    transitivePeerDependencies:
-      - jiti
-      - less
-      - lightningcss
-      - msw
-      - sass
-      - sass-embedded
-      - stylus
-      - sugarss
-      - supports-color
-      - terser
-      - tsx
-      - yaml
-
   vitest@3.2.4(@types/debug@4.1.12)(@types/node@25.2.3)(@vitest/ui@3.2.4)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@25.2.3)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
     dependencies:
       '@types/chai': 5.2.2
@@ -30748,6 +30658,46 @@ snapshots:
       - tsx
       - yaml
 
+  vitest@4.0.15(@opentelemetry/api@1.9.0)(@types/node@24.10.13)(@vitest/ui@4.0.15)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
+    dependencies:
+      '@vitest/expect': 4.0.15
+      '@vitest/mocker': 4.0.15(msw@2.12.10(@types/node@24.10.13)(typescript@5.9.3))(vite@7.3.1(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1))
+      '@vitest/pretty-format': 4.0.15
+      '@vitest/runner': 4.0.15
+      '@vitest/snapshot': 4.0.15
+      '@vitest/spy': 4.0.15
+      '@vitest/utils': 4.0.15
+      es-module-lexer: 1.7.0
+      expect-type: 1.3.0
+      magic-string: 0.30.21
+      obug: 2.1.1
+      pathe: 2.0.3
+      picomatch: 4.0.3
+      std-env: 3.10.0
+      tinybench: 2.9.0
+      tinyexec: 1.0.2
+      tinyglobby: 0.2.15
+      tinyrainbow: 3.0.3
+      vite: 7.3.1(@types/node@24.10.13)(jiti@2.6.1)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1)
+      why-is-node-running: 2.3.0
+    optionalDependencies:
+      '@opentelemetry/api': 1.9.0
+      '@types/node': 24.10.13
+      '@vitest/ui': 4.0.15(vitest@4.0.15)
+      jsdom: 26.1.0
+    transitivePeerDependencies:
+      - jiti
+      - less
+      - lightningcss
+      - msw
+      - sass
+      - sass-embedded
+      - stylus
+      - sugarss
+      - terser
+      - tsx
+      - yaml
+
   vitest@4.0.15(@opentelemetry/api@1.9.0)(@types/node@25.2.3)(@vitest/ui@4.0.15)(jiti@2.6.1)(jsdom@26.1.0)(msw@2.12.10(@types/node@25.2.3)(typescript@5.9.3))(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.1):
     dependencies:
       '@vitest/expect': 4.0.15