test: migrate test suite from Jest to Vitest and improve assertions (#151)

Author: J3m5

.github/workflows/ci.yml

@@ -35,5 +35,8 @@ jobs:
       - name: Lint
         run: pnpm lint
 
-      - name: Run tests
-        run: pnpm test
+      - name: Run tests with coverage
+        run: pnpm test:coverage
+
+      - name: Report test coverage
+        uses: davelosert/vitest-coverage-report-action@v2

.gitignore

@@ -1,2 +1,3 @@
 /lib/
 /node_modules/
+coverage

jest.config.ts

@@ -42,13 +42,11 @@
   ],
   "scripts": {
     "build": "rm -rf lib && tsc --project tsconfig.build.json",
-    "build:watch": "tsc --watch",
-    "eslint-check": "eslint-config-prettier src/index.ts",
     "lint": "eslint src",
     "lint:fix": "eslint src --fix",
-    "test": "NODE_OPTIONS=--experimental-vm-modules jest",
+    "test": "vitest",
     "typecheck": "tsc --noEmit",
-    "typecheck:watch": "tsc --noEmit --watch"
+    "test:coverage": "vitest --coverage"
   },
   "dependencies": {
     "graphql": "^16.0.0",
@@ -61,28 +59,24 @@
     "@eslint/compat": "^1.2.5",
     "@eslint/eslintrc": "^3.2.0",
     "@eslint/js": "^9.19.0",
-    "@jest/globals": "29.7.0",
-    "@jest/types": "29.0.0",
     "@types/inflection": "^1.13.0",
-    "@types/jest": "^29.0.0",
     "@types/jsonld": "^1.5.0",
     "@types/lodash.get": "^4.4.0",
     "@types/node": "^22.0.0",
+    "@vitest/coverage-v8": "3.2.2",
     "eslint": "^9.0.0",
     "eslint-config-prettier": "^10.0.0",
     "eslint-import-resolver-typescript": "^3.5.1",
     "eslint-plugin-import": "^2.26.0",
     "eslint-plugin-prettier": "^5.0.0",
     "eslint-watch": "^8.0.0",
     "globals": "^15.14.0",
-    "jest": "^29.0.0",
-    "jest-fetch-mock": "^3.0.0",
+    "msw": "^2.9.0",
     "openapi-types": "^12.0.0",
     "prettier": "^3.0.0",
-    "ts-jest": "^29.0.0",
-    "ts-node": "^10.9.0",
     "typescript": "^5.7.0",
-    "typescript-eslint": "^8.22.0"
+    "typescript-eslint": "^8.22.0",
+    "vitest": "^3.2.2"
   },
   "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977",
   "engines": {