add test coverage and publish test results and coverage in Azure Pipelines

Author: pviotti

.gitignore

@@ -4,6 +4,7 @@ logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+test-report.xml
 
 # Runtime data
 pids

azure-pipelines.yml

@@ -26,3 +26,11 @@ steps:
     npm run build
     npm test
   displayName: 'npm install, build and test'
+
+- task: PublishTestResults@2
+  inputs:
+      testResultsFiles: '**/test-report.xml' 
+
+- task: PublishCodeCoverageResults@1
+  inputs:
+    summaryFileLocation: $(System.DefaultWorkingDirectory)/**/clover.xml

jestconfig.json

@@ -3,6 +3,20 @@
     "^.+\\.(t|j)sx?$": "ts-jest"
   },
   "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
-  "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"],
-  "testPathIgnorePatterns": ["node_modules", "legacy", "dist", "dist-esm"]
-}
+  "moduleFileExtensions": [
+    "ts",
+    "tsx",
+    "js",
+    "jsx",
+    "json",
+    "node"
+  ],
+  "testPathIgnorePatterns": [
+    "node_modules",
+    "legacy",
+    "dist",
+    "dist-esm"
+  ],
+  "testResultsProcessor": "./node_modules/jest-junit-reporter",
+  "collectCoverage": true
+}