Merge pull request 'Add Vitest coverage reporting to Woodpecker CI' (#1) from codex/add-woodpecker-test-suite into main

Reviewed-on: #1
2026-04-10 13:01:38 +00:00
parent 74b54730cc 6f617fe449
commit caa6ca6ce1
9 changed files with 1076 additions and 3 deletions
@@ -1,3 +1,4 @@
 node_modules/
 dist/
+coverage/
 .DS_Store
@@ -0,0 +1,12 @@
+steps:
+  verify:
+    image: node:20
+    commands:
+      - npm ci
+      - npm run test:coverage
+      - npm run build
+
+when:
+  event:
+    - push
+    - pull_request
@@ -0,0 +1,226 @@
+# Lonc Agent Guidelines
+
+This document is the working guide for future coding agents on the Lonc frontend.
+
+## Project purpose
+
+Lonc is a lightweight PWA frontend for household kitchen stock and labeling workflows.
+
+The frontend:
+
+- talks to a separate Tryton backend
+- uses Tryton user application keys for auth
+- is optimized for phone and desktop use
+- prefers practical, high-frequency operational UX over generic CRUD
+
+## Core stack
+
+- Vite
+- Alpine.js
+- Bootstrap 5
+- plain `fetch()` API modules
+- static PWA assets in `public/`
+
+## General operating procedure
+
+When changing this project, follow this order:
+
+1. Find the existing feature module instead of adding parallel logic.
+2. Prefer updating shared API helpers before patching individual pages.
+3. Preserve the existing UX language and interaction patterns.
+4. Verify with `npm run build`.
+
+For larger behavior changes:
+
+1. Check the relevant API module in `src/api/`
+2. Check the page module in `src/features/`
+3. Check supporting shared state in `src/app/`
+4. Check matching CSS in `src/styles/app.css`
+
+## Key architecture rules
+
+### API usage
+
+- All HTTP requests should go through `src/api/client.js`
+- Do not build ad hoc URLs in feature components
+- Use `getPath()` and shared API modules in `src/api/`
+- Prefer same-origin requests when `baseUrl` is empty
+- Keep custom headers minimal
+
+### Auth model
+
+Lonc does not use Tryton JSON-RPC session login.
+
+It uses Tryton user application keys for the `kitchen` application:
+
+1. `POST /{database}/user/application/`
+2. store returned key locally
+3. user validates key in Tryton preferences
+4. frontend verifies with authenticated kitchen request
+
+Relevant session states:
+
+- `not_connected`
+- `pending_validation`
+- `connected`
+- `invalid_key`
+
+If authenticated requests start failing after a key had previously worked, the app should move toward invalid-key handling instead of repeatedly hitting the backend.
+
+### Service worker
+
+- In development, service workers should not stay registered
+- In production, avoid sticky caching for JS/CSS
+- Be careful when debugging frontend/API mismatches because stale cached bundles have already caused confusion in this project
+
+## Current backend conventions
+
+These are current project assumptions and should not be casually changed.
+
+### Main endpoints
+
+- `/{database}/user/application/`
+- `/{database}/kitchen/kitchens`
+- `/{database}/kitchen/items`
+- `/{database}/kitchen/items/grouped`
+- `/{database}/kitchen/items/{uuid_b64}`
+- `/{database}/kitchen/items/{uuid_b64}/stock`
+- `/{database}/kitchen/locations`
+
+### Labels
+
+- Preview uses label-preview flags
+- Create uses label-generation flags
+- Actual create currently also needs `print=1`
+
+### Item-definition search for label creation
+
+The label form does not search `items` directly anymore.
+
+It now searches grouped items:
+
+- `GET /{database}/kitchen/items/grouped?search_name=...&expanded=0`
+
+Reason:
+
+- grouped result is a better template for “new item from existing definition”
+- not expanding children keeps the query lighter
+
+### Grouped stock view
+
+Grouped stock view uses:
+
+- `GET /{database}/kitchen/items/grouped?expanded=1`
+
+Important:
+
+- group-level fields are meaningful and should be used
+- group expiration status should follow the backend-provided “first item expires” semantics
+- do not assume grouped child records are always returned unless `expanded=1`
+
+## UX rules that should be preserved
+
+### Label creation
+
+- Required fields must be clearly marked with a red asterisk
+- Required-field validation should happen before both preview and create
+- `Quantity` is always visible
+- `Quantity` is required only for `measured`
+- `Production date` is required
+- changing production date should keep expiration calculations in sync
+- item-definition selection should act like copying defaults for a new item, not cloning old dates blindly
+- location picker and expiration day picker were tuned for Safari/iPhone behavior, so be cautious when changing event handling
+
+### Stock review
+
+This is an operational page, not a generic data table.
+
+Priorities:
+
+- expiration visibility
+- stock state clarity
+- location clarity
+- quick actions
+- phone usability
+
+Do not degrade it into a dense admin CRUD screen.
+
+### Filters and overviews
+
+Stock page filtering is intentionally overview-driven:
+
+- main text search
+- `Expiration overview`
+- `Location overview`
+
+The overviews:
+
+- are collapsible
+- are collapsed by default
+- act as filter controls
+- should remain visually understandable on both small and large screens
+
+### Normal and grouped stock views
+
+These two views should feel related.
+
+- same filter concepts
+- similar visual language
+- direct “view item” access should exist in both
+- grouped view should stay compact by default
+
+## Known project-specific decisions
+
+- `Quantity` prefill on label creation comes from `quantity_initial`, not `quantity`
+- grouped label search should use grouped entities as source defaults
+- grouped expiration logic should rely on backend-provided group semantics
+- location filtering includes descendants when parent is selected
+- removing a parent location from filters removes its selected children too
+- grouped child item cards use softer expiration colors than the parent group card
+
+## File map
+
+### App shell and state
+
+- `src/app/bootstrap.js`
+- `src/app/router.js`
+- `src/app/store.js`
+- `src/app/config.js`
+
+### API layer
+
+- `src/api/client.js`
+- `src/api/auth.js`
+- `src/api/stock.js`
+- `src/api/locations.js`
+- `src/api/labels.js`
+
+### Main feature pages
+
+- `src/features/auth/login-page.js`
+- `src/features/auth/settings-page.js`
+- `src/features/labels/label-create-page.js`
+- `src/features/stock/stock-list-page.js`
+- `src/features/stock/stock-detail-page.js`
+
+### Styling
+
+- `src/styles/app.css`
+
+## Editing guidance for future agents
+
+- Keep behavior centralized where possible
+- Reuse existing helpers instead of inventing near-duplicates
+- Be careful when modifying auth invalidation, service worker behavior, or custom pickers
+- If changing endpoint behavior, update both API modules and README/AGENTS notes when appropriate
+- When changing interactive UI, test the desktop and small-screen behavior mentally at minimum
+
+## Verification expectation
+
+After meaningful frontend changes, run:
+
+```bash
+npm run build
+```
+
+If behavior depends on caching, auth, or service workers, mention that explicitly in the handoff.
@@ -14,6 +14,8 @@ Lonc is a responsive PWA frontend for household kitchen stock and labeling workf

 - `npm install`
 - `npm run dev`
+- `npm test`
+- `npm run test:coverage`
 - `npm run build`
 - `npm run preview`

@@ -122,6 +124,10 @@ index.html
 package.json
 ```

+## Working guide
+
+Project-specific operating conventions for future contributors and coding agents are documented in [AGENTS.md](/Users/blaz/PycharmProjects/lonc/AGENTS.md).
+
 ## Current MVP features

 - Login/configuration screen for Tryton server URL and database
@@ -12,7 +12,69 @@
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+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/convert-source-map": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-2.0.0.tgz",
+      "integrity": "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/es-module-lexer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-2.0.0.tgz",
+      "integrity": "sha512-5POEcUuZybH7IdmGsD8wlf0AI55wMecM9rVBTI/qEAy2c1kTOm3DjFYjrBdI2K3BaJjJYfYFeRtM0t9ssnRuxw==",
+      "dev": true,
+      "license": "MIT"
+    },
    "node_modules/esbuild": {
      "version": "0.27.7",
      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.27.7.tgz",
@@ -910,6 +1215,26 @@
        "@esbuild/win32-x64": "0.27.7"
      }
    },
+    "node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
+    "node_modules/expect-type": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/expect-type/-/expect-type-1.3.0.tgz",
+      "integrity": "sha512-knvyeauYhqjOYvQ66MznSMs83wmHrCycNEN6Ao+2AeYEfxUIkuiVxdEa1qlGEPK+We3n0THiDciYSsCcgW/DoA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
    "node_modules/fdir": {
      "version": "6.5.0",
      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
@@ -943,6 +1268,107 @@
        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
      }
    },
+    "node_modules/has-flag": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/html-escaper": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
+      "integrity": "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/istanbul-lib-coverage": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.2.tgz",
+      "integrity": "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/istanbul-lib-report": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.1.tgz",
+      "integrity": "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "istanbul-lib-coverage": "^3.0.0",
+        "make-dir": "^4.0.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/istanbul-reports": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-3.2.0.tgz",
+      "integrity": "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "html-escaper": "^2.0.0",
+        "istanbul-lib-report": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/js-tokens": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-10.0.0.tgz",
+      "integrity": "sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/magic-string": {
+      "version": "0.30.21",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
+      "integrity": "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.5.5"
+      }
+    },
+    "node_modules/magicast": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/magicast/-/magicast-0.5.2.tgz",
+      "integrity": "sha512-E3ZJh4J3S9KfwdjZhe2afj6R9lGIN5Pher1pF39UGrXRqq/VDaGVIGN13BjHd2u8B61hArAGOnso7nBOouW3TQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.29.0",
+        "@babel/types": "^7.29.0",
+        "source-map-js": "^1.2.1"
+      }
+    },
+    "node_modules/make-dir": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
+      "integrity": "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "semver": "^7.5.3"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
    "node_modules/nanoid": {
      "version": "3.3.11",
      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
@@ -962,6 +1388,24 @@
        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
      }
    },
+    "node_modules/obug": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/obug/-/obug-2.1.1.tgz",
+      "integrity": "sha512-uTqF9MuPraAQ+IsnPf366RG4cP9RtUi7MLO1N3KEc+wb0a6yKpeL0lmk2IB1jY5KHPAlTc6T/JRdC/YqxHNwkQ==",
+      "dev": true,
+      "funding": [
+        "https://github.com/sponsors/sxzz",
+        "https://opencollective.com/debug"
+      ],
+      "license": "MIT"
+    },
+    "node_modules/pathe": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz",
+      "integrity": "sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==",
+      "dev": true,
+      "license": "MIT"
+    },
    "node_modules/picocolors": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -1056,6 +1500,26 @@
        "fsevents": "~2.3.2"
      }
    },
+    "node_modules/semver": {
+      "version": "7.7.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
+      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/siginfo": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/siginfo/-/siginfo-2.0.0.tgz",
+      "integrity": "sha512-ybx0WO1/8bSBLEWXZvEd7gMW3Sn3JFlW3TvX1nREbDLRNQNaeNN8WK0meBwPdAaOI7TtRRRJn/Es1zhrrCHu7g==",
+      "dev": true,
+      "license": "ISC"
+    },
    "node_modules/source-map-js": {
      "version": "1.2.1",
      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
@@ -1066,6 +1530,50 @@
        "node": ">=0.10.0"
      }
    },
+    "node_modules/stackback": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/stackback/-/stackback-0.0.2.tgz",
+      "integrity": "sha512-1XMJE5fQo1jGH6Y/7ebnwPOBEkIEnT4QF32d5R1+VXdXveM0IBMJt8zfaxX1P3QhVwrYe+576+jkANtSS2mBbw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/std-env": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/std-env/-/std-env-4.0.0.tgz",
+      "integrity": "sha512-zUMPtQ/HBY3/50VbpkupYHbRroTRZJPRLvreamgErJVys0ceuzMkD44J/QjqhHjOzK42GQ3QZIeFG1OYfOtKqQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/tinybench": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
+      "integrity": "sha512-0+DUvqWMValLmha6lr4kD8iAMK1HzV0/aKnCtWb9v9641TnP/MFb7Pc2bxoxQjTXAErryXVgUOfv2YqNllqGeg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tinyexec": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.1.1.tgz",
+      "integrity": "sha512-VKS/ZaQhhkKFMANmAOhhXVoIfBXblQxGX1myCQ2faQrfmobMftXeJPcZGp0gS07ocvGJWDLZGyOZDadDBqYIJg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
    "node_modules/tinyglobby": {
      "version": "0.2.15",
      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz",
@@ -1083,6 +1591,16 @@
        "url": "https://github.com/sponsors/SuperchupuDev"
      }
    },
+    "node_modules/tinyrainbow": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.1.0.tgz",
+      "integrity": "sha512-Bf+ILmBgretUrdJxzXM0SgXLZ3XfiaUuOj/IKQHuTXip+05Xn+uyEYdVg0kYDipTBcLrCVyUzAPz7QmArb0mmw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
    "node_modules/vite": {
      "version": "7.3.1",
      "resolved": "https://registry.npmjs.org/vite/-/vite-7.3.1.tgz",
@@ -1157,6 +1675,113 @@
          "optional": true
        }
      }
+    },
+    "node_modules/vitest": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.4.tgz",
+      "integrity": "sha512-tFuJqTxKb8AvfyqMfnavXdzfy3h3sWZRWwfluGbkeR7n0HUev+FmNgZ8SDrRBTVrVCjgH5cA21qGbCffMNtWvg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/expect": "4.1.4",
+        "@vitest/mocker": "4.1.4",
+        "@vitest/pretty-format": "4.1.4",
+        "@vitest/runner": "4.1.4",
+        "@vitest/snapshot": "4.1.4",
+        "@vitest/spy": "4.1.4",
+        "@vitest/utils": "4.1.4",
+        "es-module-lexer": "^2.0.0",
+        "expect-type": "^1.3.0",
+        "magic-string": "^0.30.21",
+        "obug": "^2.1.1",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.3",
+        "std-env": "^4.0.0-rc.1",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^1.0.2",
+        "tinyglobby": "^0.2.15",
+        "tinyrainbow": "^3.1.0",
+        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^20.0.0 || ^22.0.0 || >=24.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@opentelemetry/api": "^1.9.0",
+        "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
+        "@vitest/browser-playwright": "4.1.4",
+        "@vitest/browser-preview": "4.1.4",
+        "@vitest/browser-webdriverio": "4.1.4",
+        "@vitest/coverage-istanbul": "4.1.4",
+        "@vitest/coverage-v8": "4.1.4",
+        "@vitest/ui": "4.1.4",
+        "happy-dom": "*",
+        "jsdom": "*",
+        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@opentelemetry/api": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser-playwright": {
+          "optional": true
+        },
+        "@vitest/browser-preview": {
+          "optional": true
+        },
+        "@vitest/browser-webdriverio": {
+          "optional": true
+        },
+        "@vitest/coverage-istanbul": {
+          "optional": true
+        },
+        "@vitest/coverage-v8": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        },
+        "vite": {
+          "optional": false
+        }
+      }
+    },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
    }
  }
 }
@@ -6,13 +6,18 @@
  "scripts": {
    "dev": "vite",
    "build": "vite build",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage"
  },
  "dependencies": {
    "alpinejs": "^3.14.9",
    "bootstrap": "^5.3.3"
  },
  "devDependencies": {
-    "vite": "^7.0.0"
+    "@vitest/coverage-v8": "^4.1.4",
+    "vite": "^7.0.0",
+    "vitest": "^4.1.4"
  }
 }
@@ -0,0 +1,168 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { apiRequest, buildKitchenApiUrl, getPath } from '../../src/api/client.js';
+
+function createStore(overrides = {}) {
+  return {
+    config: {
+      baseUrl: '',
+      database: 'kitchen-db',
+      ...(overrides.config || {}),
+    },
+    session: {
+      applicationKey: 'app-key',
+      hasValidated: false,
+      state: 'pending_validation',
+      ...(overrides.session || {}),
+    },
+    activeKitchen: {
+      id: 'kitchen-1',
+      ...(overrides.activeKitchen || {}),
+    },
+    ...overrides,
+  };
+}
+
+describe('api/client', () => {
+  let authFailureSpy;
+
+  beforeEach(() => {
+    authFailureSpy = vi.fn();
+    globalThis.window = {
+      location: {
+        origin: 'https://app.local',
+      },
+      __loncApp: {
+        handleAuthFailure: authFailureSpy,
+      },
+    };
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+    vi.unstubAllGlobals();
+    delete globalThis.window;
+  });
+
+  it('returns configured path constants', () => {
+    expect(getPath('items')).toBe('kitchen/items');
+    expect(getPath('userApplication')).toBe('user/application/');
+  });
+
+  it('builds kitchen urls with encoded path segments and query values', () => {
+    const store = createStore({
+      config: {
+        baseUrl: 'https://api.example.com',
+        database: 'my db',
+      },
+      activeKitchen: {
+        id: 'kitchen/01',
+      },
+    });
+
+    const url = buildKitchenApiUrl(store, 'kitchen/items/grouped', {
+      search_name: 'Milk + eggs',
+      expanded: 1,
+      ignored: '',
+    });
+
+    expect(url).toBe(
+      'https://api.example.com/my%20db/kitchen/kitchen%2F01/kitchen/items/grouped?search_name=Milk+%2B+eggs&expanded=1',
+    );
+  });
+
+  it('sends json request data and auth header through fetch', async () => {
+    const store = createStore();
+    const fetchSpy = vi.fn(async () =>
+      new Response(JSON.stringify({ ok: true }), {
+        status: 200,
+        headers: {
+          'content-type': 'application/json',
+        },
+      }),
+    );
+    vi.stubGlobal('fetch', fetchSpy);
+
+    const payload = await apiRequest(store, getPath('items'), {
+      method: 'POST',
+      body: {
+        name: 'Rice',
+      },
+      query: {
+        label: 1,
+      },
+    });
+
+    expect(payload).toEqual({ ok: true });
+
+    const [url, request] = fetchSpy.mock.calls[0];
+    expect(url).toBe('/kitchen-db/kitchen/kitchen-1/kitchen/items?label=1');
+    expect(request.method).toBe('POST');
+    expect(request.body).toBe('{"name":"Rice"}');
+    expect(request.headers.get('Accept')).toBe('application/json');
+    expect(request.headers.get('Content-Type')).toBe('application/json');
+    expect(request.headers.get('Authorization')).toBe('Bearer app-key');
+  });
+
+  it('normalizes api error payload into ApiRequestError details', async () => {
+    const store = createStore();
+    vi.stubGlobal(
+      'fetch',
+      vi.fn(async () =>
+        new Response(
+          JSON.stringify({
+            errors: {
+              name: ['Required'],
+              quantity: 'Must be positive',
+            },
+          }),
+          {
+            status: 400,
+            headers: {
+              'content-type': 'application/json',
+            },
+          },
+        ),
+      ),
+    );
+
+    await expect(apiRequest(store, getPath('items'))).rejects.toMatchObject({
+      name: 'ApiRequestError',
+      status: 400,
+      details: {
+        name: 'Required',
+        quantity: 'Must be positive',
+      },
+    });
+  });
+
+  it('triggers auth failure handler after validated session receives auth errors', async () => {
+    const store = createStore({
+      session: {
+        applicationKey: 'app-key',
+        hasValidated: true,
+        state: 'connected',
+      },
+    });
+
+    vi.stubGlobal(
+      'fetch',
+      vi.fn(async () =>
+        new Response(JSON.stringify({ detail: 'Unauthorized' }), {
+          status: 401,
+          headers: {
+            'content-type': 'application/json',
+          },
+        }),
+      ),
+    );
+
+    await expect(apiRequest(store, getPath('items'))).rejects.toMatchObject({
+      name: 'ApiRequestError',
+      status: 401,
+    });
+
+    expect(authFailureSpy).toHaveBeenCalledTimes(1);
+  });
+});
@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest';
+
+import { formatDate } from '../../../src/features/shared/date-utils.js';
+
+describe('formatDate', () => {
+  it('returns fallback when date value is missing', () => {
+    expect(formatDate('')).toBe('Not set');
+    expect(formatDate(null)).toBe('Not set');
+  });
+
+  it('returns the raw input for invalid date values', () => {
+    expect(formatDate('not-a-date')).toBe('not-a-date');
+  });
+
+  it('formats valid date values', () => {
+    expect(formatDate('2026-01-15')).toContain('2026');
+  });
+});
@@ -0,0 +1,12 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'lcov'],
+      reportsDirectory: 'coverage',
+      include: ['src/**/*.js'],
+    },
+  },
+});