Backend & Frontend Test Coverage - #84
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SagiEv
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Sep 1, 2026
OwnerAuthor
Unit Tests Implementation WalkthroughThe backend has been successfully outfitted with a comprehensive unit test suite following the AAA (Arrange-Act-Assert) pattern. What was accomplished
Validation ResultsThe full suite runs and passes successfully! > npm run test:coverage
Test Suites: 40 passed, 40 total
Tests: 345 passed, 345 total
Snapshots: 0 total
Time: 18.596 sCoverage statistics achieved:
Note The core CRUD controllers and services (like Profile, Events, ApplicationHistory, Skills, RSS) are largely at 100% coverage. The remaining 35% of uncovered codebase mostly lies in heavy integration-based tasks like Running The Tests YourselfYou can run the full test suite manually from the backend directory: cd backend
npm run test:coverage |
SagiEv
commented
Sep 1, 2026
OwnerAuthor
Generalization Testing Infrastructure InstalledWe successfully resolved the disk space issues and I have fully implemented the three-pillar strategy to prevent "invalid hook calls" and other frontend logic bugs. What Was Done1. Static Analysis (ESLint)
2. Mock Service Worker & Integration Setup
3. Playwright E2E Setup
Tip Try it out! |
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Backend Unit Test Coverage — Full Plan
Add comprehensive unit tests to every testable layer of the Node.js backend using AAA (Arrange-Act-Assert) with Jest, following best practices for maintainability, flexibility, and isolation.
User Review Required
Important
Test scope: This plan covers the Node.js backend only (not the Python FastAPI AI service). The AI service has its own stack and should be tested separately with
pytest.Important
Heavy-IO services (
mail-poller.service,rssPoller,cv.service,cv.jsonresume.service) that heavily couple to Puppeteer/IMAP/external APIs are tested at the service level with all IO mocked — not skipped. If you want true integration tests for those later, we can add them as a separate phase.Important
Existing tests (applications.status.test.js and email-classifier.test.js) will be kept as-is. New tests fill in all the gaps.
Open Questions
Note
Coverage target: This plan targets line/branch coverage for all business logic. Do you want a minimum coverage threshold enforced (e.g.,
--coverage --coverageThresholdin Jest)?Note
Notifications route: notifications.routes.js has no controller file — it appears to have inline handlers. Should I extract them into a controller for testability, or test the route handler inline?
Design Principles (Applied Everywhere)
it()block has clearly-commented// Arrange,// Act,// Assertsectionsjest.mock()'d — no real DB, no real HTTP, no real file IOtests/helpers/factories.jsbuilds reusable test data objects via builder functionsdescribe('serviceName.methodName')→it('should X when Y')it()tests one behaviorexpect.objectContaining()over exact object matching — tests survive schema additionsbeforeEach(() => jest.clearAllMocks())in every suiteProposed Changes
Infrastructure & Tooling
[NEW] jest.config.js
Jest configuration file with:
testMatchpointing totests/**/*.test.jssetupFilesAfterSetuppointing totests/setup.jscontrollers/,services/,middleware/,utils/,schemas/modulePathIgnorePatternsfornode_modules,ai_service[NEW] tests/setup.js
Global test setup:
process.envvars (SUPABASE_URL,SUPABASE_ANON_KEY,ENCRYPTION_KEY)console.log/console.warn/console.errorduring test runs to keep output clean[NEW] tests/helpers/factories.js
Builder functions for reusable test data:
buildUser(overrides)— returns a mockreq.userobjectbuildApplication(overrides)— returns a mock application rowbuildContact(overrides),buildInterview(overrides),buildEvent(overrides)buildReqRes(overrides)— returns mock Express{ req, res }with jest spies onres.json,res.status,res.end, etc.buildHistoryEntry(overrides)— mock application_history rowbuildSettings(overrides)— mock settings row with encrypted tokens[NEW] tests/helpers/mockSupabase.js
A centralized mock for
../supabaseClientthat returns chainable query builder stubs (.from().select().eq().single()etc.) — configurable per test via a helper function.[MODIFY] package.json
test:coveragescript:"jest --coverage --forceExit"testscriptMiddleware Tests (4 files)
[NEW] tests/middleware/auth.test.js
Tests for
authenticatemiddleware. Mocks../supabaseClient.req.userandreq.tokenand callsnext()on valid token[NEW] tests/middleware/validate.test.js
Tests for
validate(schema)middleware. Uses real Zod schemas.next()when body passes schema validation"unknown"field when error has no path[NEW] tests/middleware/roleCheck.test.js
Tests for
authorize(allowedRoles)middleware.req.useris missinguser_metadata.roleapp_metadata.role"user"when no role metadata existsnext()when role is authorized[NEW] tests/middleware/error.test.js
Tests for
errorHandlermiddleware.err.statuserr.statuscode: '23505')Schema Tests (1 file)
[NEW] tests/schemas/userSchemas.test.js
Tests for
signupSchemaandloginSchemaZod schemas.signupSchemaaccepts valid email + password ≥ 8 charssignupSchemarejects invalid emailsignupSchemarejects password < 8 charssignupSchemaaccepts optional username (3-15 chars)signupSchemarejects username < 3 charsloginSchemaaccepts valid email + passwordloginSchemarejects empty passwordUtility Tests (3 files)
[NEW] tests/utils/encryption.test.js
encrypt→decryptround-trips correctlyencrypt(null)returns nullencrypt('')returns null (falsy)decrypt(null)returns null:[NEW] tests/utils/ai_validator.test.js
Mocks
axios. TestsvalidateAiTokenandSTRUCTURAL_RULES.[NEW] tests/utils/cvTemplate.test.js
Service Tests (15 files — the core of the coverage)
Each service test mocks its repository dependency. Services are where the business logic lives.
[NEW] tests/services/applicationHistory.service.test.js
getHistoryByApplicationIdreturns data on successgetHistoryByApplicationIdthrows on repo erroraddHistorycreates a history recordupdateHistoryupdates by idlogChangeskips logging when nothing changed and eventType is not Note/InterviewlogChangelogs when eventType is "Note" even if status unchangedlogChangeincludes event_date when providedlogChangeomits event_date when null[NEW] tests/services/applications.service.test.js
Extends the existing
applications.status.test.jsto cover the full service. Mocksapplications.repository,applicationHistory.service, and../supabaseClient.last_activity_dateenrichmentapp.datewhen no history existskeep_both— logs both eventsoverwrite— updates existing history{ success: true }[NEW] tests/services/contacts.service.test.js
Standard CRUD tests. Mocks
contacts.repository.getAllContactsreturns datagetAllContactsthrows on errorcreateContactreturns new recordupdateContactreturns updated recorddeleteContactreturns{ success: true }bulkCreateContactsreturns success count[NEW] tests/services/events.service.test.js
Same pattern as contacts. Mocks
events.repository.[NEW] tests/services/experience.service.test.js
Mocks
experience.repository. Tests both project CRUD + experience text operations.getAllProjectsreturns datacreateProjectreturns new projectcreateProjectthrows raw error (not wrapped) for detail loggingupdateProjectreturns updated projectdeleteProjectreturns{ success: true }getExperienceTextreturns data or{ text: '' }fallbackgetExperienceTextignores PGRST116 (not found) errorsaveExperienceTextreturns saved data[NEW] tests/services/interviews.service.test.js
Mocks
interviews.repository,applicationHistory.service,settings.service,axios.getAllInterviewsreturns datacreateInterviewlogs history whenapplication_idpresentcreateInterviewskips history logging when noapplication_idupdateInterviewreturns updated recorddeleteInterviewreturns successgetAiReportsreturns reportsgenerateAiReportthrows on no interview datagenerateAiReportthrows on missing AI configgenerateAiReportcalls AI service and saves resultgenerateAiReportwraps AI service errors[NEW] tests/services/profile.service.test.js
getProfiletransformscv_data→cvDatagetProfilemapswebsite→githubgetProfilereturns{}when no profile found (PGRST116)upsertProfilemapscvData→cv_dataandgithub→websiteupsertProfilecallscreateProfilewhen noidupsertProfilecallsupdateProfilewhenidpresent[NEW] tests/services/skills.service.test.js
Standard CRUD pattern. 4 methods × (happy + error) = 8 tests.
[NEW] tests/services/settings.service.test.js
Mocks
settings.repository,../utils/encryption,../utils/ai_validator.getSettingsreturns masked tokens (first 6 chars + mask)getSettingsreturnsnullpreviews when no token setgetSettingsdecrypts encrypted tokens; falls back to plain groq_tokengetSettingsreturns SMTP fields and defaultssaveSettingsencrypts new AI tokens after validationsaveSettingsthrows when AI token validation failssaveSettingsclears token when empty string providedsaveSettingsclears legacygroq_tokenfieldsaveSettingsencrypts SMTP passwordsaveSettingssaves ai_routing and timezonegetAllAiConfigsreturns decrypted tokens (internal use)getAllAiConfigsreturns null on repo error[NEW] tests/services/user.service.test.js
Mocks
user.repository.registerUserreturns data on successregisterUserthrows on errorloginUserreturns{ access_token, refresh_token, user }loginUserthrows on errorrefreshUserSessionreturns sessionrefreshUserSessionthrows on error[NEW] tests/services/searchSettings.service.test.js
Mocks
searchSettings.repository. Standard CRUD + sites sub-resource.[NEW] tests/services/rss.service.test.js
Mocks
rss.repository. TestsgetFeeds,addFeed,updateFeed(setsupdated_at),deleteFeed,getJobs.[NEW] tests/services/job.service.test.js
Mocks
../supabaseClient(usesadminSupabase).createJobreturns job IDcreateJobthrows on errorcompleteJobupdates status to completed with result_datafailJobhandles string errorfailJobhandles object error withsuggested_modelfailJobhandles object error withmessagegetJobreturns job datagetJobthrows on not found[NEW] tests/services/jsonresume-mapper.test.js
Pure function — no mocks needed. Tests
mapToJsonResumeand internal parsers.mapToJsonResumeproduces valid JSON Resume structureCategory: item, itemformat"October 2021"→"2021-10""07/2017"→"2017-07""Present"→""Category: value, valueformat[NEW] tests/services/jsonresume-section-order.test.js
Pure function — no mocks needed. Tests
reorderSections.stackoverflowthemeclaudetheme sections into canonical orderarchitects-portfoliosections</header>foundController Tests (15 files)
Controllers are thin wrappers (delegate to service, catch errors). Tests verify:
res.json()/res.status()is called correctly[NEW]
tests/controllers/applications.controller.test.jsgetAllreturns 401 whenreq.useris missinggetAllcalls service and returns data viares.jsongetAllreturns 400 on service errorcreatereturns 401 whenreq.useris missingcreatecalls service and returns dataupdatereturns 409 withCONFLICTING_EVENTcodeupdatereturns 400 on other errorsremovecalls service and returns resultbulkCreatereturns datagetAnalyticsMetricsreturns metrics[NEW]
tests/controllers/contacts.controller.test.js[NEW]
tests/controllers/events.controller.test.js[NEW]
tests/controllers/experience.controller.test.js[NEW]
tests/controllers/interviews.controller.test.js[NEW]
tests/controllers/profile.controller.test.js[NEW]
tests/controllers/skills.controller.test.js[NEW]
tests/controllers/user.controller.test.js[NEW]
tests/controllers/settings.controller.test.js[NEW]
tests/controllers/searchSettings.controller.test.js[NEW]
tests/controllers/rss.controller.test.js[NEW]
tests/controllers/applicationHistory.controller.test.js[NEW]
tests/controllers/tailor.controller.test.js[NEW]
tests/controllers/csv.controller.test.js[NEW]
tests/controllers/messages.controller.test.jsEach controller test file follows the same pattern:
buildReqRes()factorycsv.controllerhas CSV parsing strategies,settings.controllerhas SMTP test / AI token test)File Summary
jest.config.js,setup.js,factories.js,mockSupabase.js)Verification Plan
Automated Tests
Manual Verification
Frontend Testing Implementation Plan
We will add a comprehensive unit and integration testing suite for the React frontend, focusing on flexibility, ease of maintenance, and testing best practices (testing behavior over implementation details).
Testing Stack
axiosorfetchdirectly.User Review Required
Important
The current setup doesn't have a dedicated frontend testing framework. We propose installing
vitestand@testing-library/react. Do you approve this stack, and should we also addmsw(Mock Service Worker) for API mocking, or do you prefer mocking the API client/Axios directly?Proposed Changes
Setup and Configuration
[MODIFY] package.json
vitest,jsdom,@testing-library/react,@testing-library/jest-dom,@testing-library/user-event,msw."test": "vitest","test:ui": "vitest --ui","coverage": "vitest run --coverage".[MODIFY] vite.config.js
environment: 'jsdom') and test setup file (setupFiles: './src/setupTests.js').[NEW] setupTests.js
@testing-library/jest-dom.ResizeObserverfor graphs, MSW server setup).UI Components Tests
Focus: Rendering correctly given props, basic accessibility.
[NEW] ProviderBadge.test.jsx
[NEW] PageLoader.test.jsx
Notifications & Dialogs Tests
Focus: Context providers functionality, trigger mechanism, visibility, and unmounting.
[NEW] ToastProvider.test.jsx
[NEW] ConfirmProvider.test.jsx
Application List/Detail Loading & Forms
Focus: Integration tests. Mocking API/React Query to simulate loading, success, error states, and form submissions.
[NEW] ApplicationsPage.test.jsx
[NEW] ApplicationDetailPage.test.jsx
[NEW] SettingsPage.test.jsx
Analytics Rendering Tests
Focus: Testing that chart containers render and process data correctly. (Note: testing D3 svgs deeply can be brittle; we will test the wrapper components and data passing).
[NEW] AnalyticsPage.test.jsx
[NEW] NetworkGraph.test.jsx
CV Rendering Tests
Focus: Ensure CV themes parse user data correctly into HTML structure.
[NEW] TailorPage.test.jsx
Verification Plan
Automated Tests
npm run testinside the/frontenddirectory to ensure all tests pass.npm run coverageto ensure all critical paths (components, contexts, hooks) are covered.Manual Verification
Frontend Testing Implementation Complete
I have successfully added a robust testing foundation for the React frontend and created tests for the key components and features you specified. The setup prioritizes behavior-driven testing and maintains flexibility for future changes.
Testing Setup
setupTests.jsto automatically handle DOM APIs likeResizeObserverwhich aren't fully supported injsdom(needed for D3 charts/Recharts).Tests Added
1. UI Components (
ProviderBadge,PageLoader)ProviderBadgefor correctly showing the configured API provider and reacting to user interactions when clicking the dropdown.PageLoaderdisplays the correct accessibility labels and custom loading texts.2. Notifications & Dialogs (
ToastProvider,ConfirmProvider)ConfirmProvidercorrectly resolves promises withtrueorfalsebased on user interactions with the dialog.3. Application List/Detail & Forms (
ApplicationsPage,ApplicationDetailPage,SettingsPage)ApplicationsPage.ApplicationDetailPage, including the inline status-updating UI and adding notes to the application history.SettingsPageto ensure tab switching and complex settings forms (like changing passwords or API keys) render and behave as expected.4. Analytics Rendering (
AnalyticsPage,NetworkGraph)NetworkGraphto test view-mode switching (Contacts vs. Companies).AnalyticsPagehandles empty states gracefully and displays the charts when sufficient data is available.5. CV Rendering (
TailorPage)TailorPagecorrectly handles URL inputs and interacts with the AI services logic.Tip
You can run the tests locally at any time by executing
npm run testinside the/frontenddirectory. For a UI dashboard showing test results, usenpm run test:ui.Robust Testing & Bug Prevention Strategy
To permanently eliminate bugs like the "Invalid Hook Call" and ensure the codebase is resilient against similar runtime logical errors, we need to shift away from shallow mocking towards a more robust, multi-layered testing strategy.
This generalized solution prevents bugs at three distinct levels: Build-time (Static Analysis), Test-time (Integration), and Runtime (E2E).
Proposed Changes
1. Static Analysis (ESLint + React Rules)
Currently, the project lacks an active ESLint configuration. ESLint can catch "Invalid hook calls" and other React-specific violations statically, without writing a single test.
[NEW]
frontend/.eslintrc.cjseslint-plugin-react-hooksplugin.react-hooks/rules-of-hooksto "error" instead of "warn". This will explicitly fail the build if a hook is used inside a regular helper function.[MODIFY]
frontend/package.jsonnpm run lintscript that runs across the/srcdirectory.2. Mock Service Worker (MSW) & Test Utils
Right now, tests use
vi.mock('../../hooks/useApplications')to completely bypass business logic. We should test the actual logic by rendering components fully and mocking the network layer instead.[NEW]
frontend/src/tests/setup-msw.jsmswand set up a mock server that interceptsaxiosrequests (e.g.,apiClient.post('/api/applications')) and returns mock JSON data.[NEW]
frontend/src/tests/test-utils.jsxrenderfunction for@testing-library/react.QueryClientProvider,ToastProvider, andBrowserRouter, completely eliminating the need to mock them in individual test files.[MODIFY]
frontend/src/pages/__tests__/ApplicationsPage.test.jsxrenderutility.vi.mock('../../hooks/useApplications')block so the test executes the realuseApplicationslogic, which would have caught the invalid hook call.3. End-to-End Smoke Testing (Playwright)
E2E tests guarantee that user interactions don't crash the browser. They test the entire stack from the button click down to the DOM update.
[NEW]
frontend/playwright.config.js@playwright/test.[NEW]
frontend/tests/e2e/smoke.spec.jsOpen Questions
Important
Feedback Required:
Do you want to implement all three layers of this strategy (ESLint, MSW Integration Tests, and Playwright E2E)? If you prefer to start smaller, we can prioritize just ESLint and MSW for now. Let me know your preference and I will execute the changes!