ci: only check for code coverage

Author: jpayne3506

.pipelines/templates/run-unit-tests.yaml

@@ -26,7 +26,9 @@ stages:
                 } | { read xs; exit $xs; }
               } 4>&1
 
-              mv coverage-all.out linux-coverage.out
+              # combine coverage from multiple modules
+              (echo "mode: atomic"; tail -q -n +2 coverage-*.out) > coverage.cover
+              mv coverage.cover linux-coverage.out
             retryCountOnTaskFailure: 3
             name: "Test"
             displayName: "Run Tests"
@@ -60,50 +62,57 @@ stages:
               targetPath: 'windows-coverage.out'
               artifactName: 'windows-coverage'
 
-  - stage: code_coverage
-    displayName: Code Coverage Check
-    dependsOn:
-      - test
-    jobs:
-      - job: coverage
-        displayName: Check Coverage
-        pool:
-          name: "$(BUILD_POOL_NAME_DEFAULT)"
-        steps:
-          - task: DownloadPipelineArtifact@2
-            inputs:
-              artifact: 'linux-coverage'
-              path: './'
-          - bash: |
-              make tools
-              sudo ln -s $(pwd)/build/tools/bin/gocov /usr/local/bin/gocov
-              sudo ln -s $(pwd)/build/tools/bin/gocov-xml /usr/local/bin/gocov-xml
+    # Looking for PRs from merge queue
+    # Expected output refs/heads/gh-readonly-queue/master/pr-3780-f0a96a1
+  - ${{ if contains(variables['Build.SourceBranch'], 'master/pr') }}:
+    - stage: code_coverage
+      displayName: Code Coverage Check
+      dependsOn:
+        - test
+      jobs:
+        - job: coverage
+          displayName: Check Coverage
+          pool:
+            name: "$(BUILD_POOL_NAME_DEFAULT)"
+          steps:
+            - task: DownloadPipelineArtifact@2
+              inputs:
+                artifact: 'linux-coverage'
+                path: './'
+            - bash: |
+                # use go work to include multiple modules or gocov will omit results from those modules
+                make workspace
 
-              GOOS=linux gocov convert linux-coverage.out > linux-coverage.json
-              GOOS=linux gocov-xml < linux-coverage.json > linux-coverage.xml
+                make tools
+                sudo ln -s $(pwd)/build/tools/bin/gocov /usr/local/bin/gocov
+                sudo ln -s $(pwd)/build/tools/bin/gocov-xml /usr/local/bin/gocov-xml
 
-              # TODO: Add windows coverage back in once PublishCodeCoverageResults v2 works with BuildQualityChecks
+                  GOOS=linux gocov convert linux-coverage.out > linux-coverage.json
+                  GOOS=linux gocov-xml < linux-coverage.json > linux-coverage.xml
 
-              mkdir coverage
+                  # TODO: Add windows coverage back in once PublishCodeCoverageResults v2 works with BuildQualityChecks
 
-              mv linux-coverage.xml coverage/
-            name: "Coverage"
-            displayName: "Generate Coverage Report"
-            condition: always()
-          - task: PublishCodeCoverageResults@1
-            displayName: "Publish Code Coverage Report"
-            condition: always()
-            inputs:
-              codeCoverageTool: 'Cobertura'
-              summaryFileLocation: coverage/linux-coverage.xml
-          - task: BuildQualityChecks@8
-            displayName: "Check Code Coverage Regression"
-            condition: always()
-            inputs:
-              checkCoverage: true
-              coverageFailOption: "build"
-              coverageType: "lines"
-              fallbackOnPRTargetBranch: false
-              baseBranchRef: "master"
-              allowCoverageVariance: true
-              coverageVariance: 0.25
+                  mkdir coverage
+
+                  mv linux-coverage.xml coverage/
+                name: "Coverage"
+                displayName: "Generate Coverage Report"
+                condition: always()
+
+              - task: PublishCodeCoverageResults@1
+                displayName: "Publish Code Coverage Report"
+                condition: always()
+                inputs:
+                  codeCoverageTool: 'Cobertura'
+                  summaryFileLocation: coverage/linux-coverage.xml
+              - task: BuildQualityChecks@8
+                displayName: "Check Code Coverage Regression"
+                condition: always()
+                inputs:
+                  checkCoverage: true
+                  coverageFailOption: "build"
+                  coverageType: "lines"
+                  fallbackOnPRTargetBranch: false
+                  baseBranchRef: "master"
+                  allowCoverageVariance: true
+                  coverageVariance: 0.25