Setup code coverage in Azure DevOps

Author: andyleejordan

.vsts-ci/azure-pipelines-ci.yml

@@ -46,13 +46,15 @@ jobs:
     vmImage: windows-2019
   steps:
   - template: templates/ci-general.yml
+  - template: templates/coverage.yml
 
 - job: PS7_macOS
   displayName: PowerShell 7 - macOS 10.15
   pool:
     vmImage: macOS-10.15
   steps:
   - template: templates/ci-general.yml
+  - template: templates/coverage.yml
 
 - job: PS7_Ubuntu
   displayName: PowerShell 7 - Ubuntu 20.04

.vsts-ci/templates/coverage.yml

@@ -0,0 +1,11 @@
+# NOTE: This requires the build to have been run first.
+steps:
+- pwsh: npm run coverage
+  workingDirectory: $(Build.SourcesDirectory)/vscode-powershell
+  displayName: Analyzing code coverage
+- task: PublishCodeCoverageResults@1
+  displayName: Publish code coverage results
+  inputs:
+    codeCoverageTool: Cobertura
+    summaryFileLocation: $(Build.SourcesDirectory)/vscode-powershell/coverage/cobertura-coverage.xml
+    failIfCoverageEmpty: true