feat(tests): enhance test coverage reporting with Jest JUnit integrat…

…ion (#160)

.github/workflows/ci.yml

@@ -0,0 +1,44 @@
+name: CI - ESLint, Prettier, Jest, and Codecov
+on:
+    push:
+        branches: [develop, main]
+    pull_request:
+        branches: [develop, main]
+jobs:
+    test:
+        name: Run tests and collect coverage
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+
+            - name: Set up Bun
+              uses: oven-sh/setup-bun@v2
+
+            - name: Install dependencies
+              run: bun install --frozen-lockfile
+
+            - name: Run ESLint
+              run: bunx eslint . --ext .js,.jsx,.ts,.tsx
+
+            - name: Run Prettier
+              run: bunx prettier . --check
+
+            - name: Run tests
+              run: bunx jest --coverage --reporters=jest-junit
+
+            - name: Upload coverage to Codecov
+              uses: codecov/codecov-action@v5
+              with:
+                  directory: ${{ github.action_path }}
+                  token: ${{ secrets.CODECOV_TOKEN }}
+                  slug: getsentry/self-hosted
+
+            - name: Upload test results to Codecov
+              if: ${{ !cancelled() }}
+              uses: codecov/test-results-action@v1
+              with:
+                  directory: ${{ github.action_path }}
+                  token: ${{ secrets.CODECOV_TOKEN }}

codecov.yml

@@ -0,0 +1,10 @@
+coverage:
+    status:
+        project: #add everything under here, more options at https://docs.codecov.com/docs/commit-status
+            default:
+                # basic
+                target: auto #default
+                threshold: 0%
+                base: auto
+            comment:
+                enabled: true

junit.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites name="jest tests" tests="4" failures="0" errors="0" time="0.373">
+  <testsuite name="getGroupedTimetable" errors="0" failures="0" skipped="0" timestamp="2025-01-16T19:33:31" time="0.281" tests="4">
+    <testcase classname="getGroupedTimetable should correctly group and sort timetable entries and exams by date" name="getGroupedTimetable should correctly group and sort timetable entries and exams by date" time="0.004">
+    </testcase>
+    <testcase classname="generateKey should generate a unique key for a lecture" name="generateKey should generate a unique key for a lecture" time="0.001">
+    </testcase>
+    <testcase classname="isValidRoom should return true for valid room strings" name="isValidRoom should return true for valid room strings" time="0">
+    </testcase>
+    <testcase classname="isValidRoom should return false for invalid room strings" name="isValidRoom should return false for invalid room strings" time="0.001">
+    </testcase>
+  </testsuite>
+</testsuites>

package.json

@@ -156,6 +156,7 @@
     "husky": "^9.1.7",
     "jest": "~29.7.0",
     "jest-expo": "~52.0.3",
+    "jest-junit": "^16.0.0",
     "lint-staged": "^15.4.0",
     "prettier": "3.4.2",
     "prop-types": "^15.8.1",
@@ -175,19 +176,18 @@
     "[email protected]": "patches/[email protected]"
   },
   "jest": {
-  "preset": "jest-expo",
-  "transformIgnorePatterns": [
-    "node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@sentry/react-native|native-base|react-native-svg)"
-  ],
-  "collectCoverage": true,
-  "collectCoverageFrom": [
-    "**/*.{ts,tsx,js,jsx}",
-    "!**/coverage/**",
-    "!**/node_modules/**",
-    "!**/babel.config.js",
-    "!**/expo-env.d.ts",
-    "!**/.expo/**"
-  ]
-}
-
+    "preset": "jest-expo",
+    "transformIgnorePatterns": [
+      "node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@sentry/react-native|native-base|react-native-svg)"
+    ],
+    "collectCoverage": true,
+    "collectCoverageFrom": [
+      "**/*.{ts,tsx,js,jsx}",
+      "!**/coverage/**",
+      "!**/node_modules/**",
+      "!**/babel.config.js",
+      "!**/expo-env.d.ts",
+      "!**/.expo/**"
+    ]
+  }
 }