Configure comprehensive code coverage with c8 for the Agents-for-js repository

.c8rc.json

@@ -0,0 +1,31 @@
+{
+  "src": [
+    "packages/*/src"
+  ],
+  "exclude": [
+    "packages/*/test/**",
+    "packages/*/dist/**",
+    "test-agents/**",
+    "samples/**",
+    "**/*.test.ts",
+    "**/*.d.ts"
+  ],
+  "include": [
+    "packages/*/src/**/*.ts"
+  ],
+  "extension": [
+    ".ts"
+  ],
+  "reporter": [
+    "text",
+    "html",
+    "lcov",
+    "json"
+  ],
+  "reports-dir": "./coverage",
+  "all": true,
+  "lines": 80,
+  "functions": 80,
+  "branches": 80,
+  "statements": 80
+}

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
         run: npm run build
 
       - name: Run tests
-        run: npm test
+        run: npm run test:junit
 
       - name: Build samples
         run: npm run build:samples

.gitignore

@@ -6,4 +6,8 @@ dist/
 test-report.xml
 tsconfig.tsbuildinfo
 devTools/
-generated
+generated
+
+# Coverage reports
+coverage/
+.nyc_output/

README.md

@@ -49,6 +49,22 @@ The packages include the source code in the `src`, along with the sourcemaps in
 
 We are using `eslint` configured with [neostandard](https://github.com/neostandard/neostandard)
 
+### Testing and Code Coverage
+
+The repository includes comprehensive testing and code coverage configuration:
+
+- **Run tests**: `npm run test`
+- **Run tests with JUnit reporting**: `npm run test:junit`
+- **Run tests with code coverage**: `npm run test:coverage`
+- **CI-friendly coverage with JUnit**: `npm run test:coverage:ci`
+
+Code coverage reports are generated in multiple formats:
+- **HTML reports**: Available in `coverage/index.html` for interactive browsing
+- **LCOV format**: `coverage/lcov.info` for integration with CI/CD tools and IDEs
+- **JSON summary**: `coverage/coverage-summary.json` for automated processing
+
+Coverage configuration can be found in `.c8rc.json` with thresholds set at 80% for lines, functions, branches, and statements.
+
 ## Contributing
 
 This project welcomes contributions and suggestions.  Most contributions require you to agree to a