test: add Karma/Jasmine testing setup with coverage and CI

- Install karma, jasmine, karma-coverage testing dependencies
- Add karma.conf.js with coverage reporting (html, text-summary, lcov)
- Add src/test.ts for Angular testing environment
- Create SwissParlService unit tests
- Create BusinessService unit tests
- Create AppComponent integration test
- Add GitHub Actions workflow for on-demand testing
- Add npm scripts: test, test:ci, test:coverage

Author: Sisyphos

.github/workflows/test.yml

@@ -0,0 +1,40 @@
+name: Tests
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm run test:ci
+
+      - name: Upload coverage report
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage/parlwatch/
+          retention-days: 30
+
+      - name: Post coverage summary
+        run: |
+          echo "### Test Coverage Summary" >> $GITHUB_STEP_SUMMARY
+          cat coverage/parlwatch/index.html | grep -oP '[^>]+(?=%</span>)' | head -1 | xargs -I {} echo "- Overall Coverage: {}%" >> $GITHUB_STEP_SUMMARY || echo "- Coverage report generated" >> $GITHUB_STEP_SUMMARY

karma.conf.js

@@ -0,0 +1,53 @@
+// Karma configuration file for Angular testing
+// Generated for Angular 20 + Ionic project
+
+module.exports = function (config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-chrome-launcher'),
+      require('karma-coverage'),
+      require('@angular-devkit/build-angular/plugins/karma')
+    ],
+    client: {
+      jasmine: {
+        // you can add configuration options for Jasmine here
+        // the possible options are listed at https://jasmine.github.io/api/edge/Configuration.html
+      },
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    jasmineHtmlReporter: {
+      suppressAll: true // removes the duplicated traces
+    },
+    coverageReporter: {
+      dir: require('path').join(__dirname, './coverage/parlwatch'),
+      subdir: '.',
+      reporters: [
+        { type: 'html' },
+        { type: 'text-summary' },
+        { type: 'lcovonly' }
+      ],
+      check: {
+        global: {
+          statements: 0,
+          branches: 0,
+          functions: 0,
+          lines: 0
+        }
+      }
+    },
+    reporters: ['progress', 'kjhtml', 'coverage'],
+    browsers: ['ChromeHeadless'],
+    customLaunchers: {
+      ChromeHeadlessCI: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox', '--disable-gpu']
+      }
+    },
+    restartOnFileChange: true,
+    singleRun: false
+  });
+};