Polish pipeline config and add coverage reporting

.gitignore

@@ -4,6 +4,7 @@ node_modules/
 lib/
 out/
 out-test/
+.nyc_output/
 Makefile.gyp
 *.Makefile
 *.target.gyp.mk

CONTRIBUTING.md

@@ -52,3 +52,7 @@ By contributing code to xterm.js you:
    holder has explicitly granted the right to use it like this,
    through a compatible open source license or through a direct
    agreement with you.)
+
+### Test coverage
+
+One area that always needs attention is improving out unit test coverage, you can view the code coverage report on [Azure Pipelines](https://dev.azure.com/xtermjs/xterm.js/_build/latest?definitionId=3) by clicking the Code Coverage tab.

azure-pipelines.yml

@@ -12,19 +12,32 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
+  - task: YarnInstaller@3
     inputs:
-      versionSpec: "1.9.4"
+      versionSpec: '1.x'
     displayName: 'Install Yarn'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
-  - script: |
-      yarn test-unit --forbid-only
+  - script: yarn test-unit --forbid-only
     displayName: 'Unit tests'
-  - script: |
-      yarn lint
+  - script: yarn lint
     displayName: 'Lint'
+  - script: |
+      NODE_PATH=$(pwd)/out ./node_modules/.bin/nyc ./node_modules/.bin/mocha './out/*test.js' './out/**/*test.js'
+      ./node_modules/.bin/nyc report --reporter=cobertura
+    displayName: 'Coverage report'
+  - task: PublishCodeCoverageResults@1
+    inputs:
+      codeCoverageTool: Cobertura
+      summaryFileLocation: '$(System.DefaultWorkingDirectory)/**/*coverage.xml'
+    displayName: 'Publish coverage'
+  - task: mspremier.BuildQualityChecks.QualityChecks-task.BuildQualityChecks@6
+    displayName: 'Check build quality'
+    inputs:
+      checkCoverage: true
+      coverageType: branches
+      coverageThreshold: 55
+      coverageFailOption: fixed
 
 - job: macOS
   pool:
@@ -34,14 +47,11 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
-  - script: |
-      yarn test-unit --forbid-only
+  - script: yarn test-unit --forbid-only
     displayName: 'Unit tests'
-  - script: |
-      yarn lint
+  - script: yarn lint
     displayName: 'Lint'
 
 - job: Windows
@@ -52,14 +62,11 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
-  - script: |
-      yarn test-unit --forbid-only
+  - script: yarn test-unit --forbid-only
     displayName: 'Unit tests'
-  - script: |
-      yarn lint
+  - script: yarn lint
     displayName: 'Lint'
 
 - job: Linux_IntegrationTests
@@ -70,12 +77,11 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
+  - task: YarnInstaller@3
     inputs:
-      versionSpec: "1.9.4"
+      versionSpec: '1.x'
     displayName: 'Install Yarn'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
   - script: |
       yarn start &
@@ -91,8 +97,7 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
   - script: |
       yarn start &
@@ -115,13 +120,11 @@ jobs:
     inputs:
       versionSpec: '8.x'
     displayName: 'Install Node.js'
-  - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
+  - task: YarnInstaller@3
     inputs:
-      versionSpec: "1.9.4"
+      versionSpec: '1.x'
     displayName: 'Install Yarn'
-  - script: |
-      yarn
+  - script: yarn
     displayName: 'Install dependencies and build'
-  - script: |
-      NPM_AUTH_TOKEN="$(NPM_AUTH_TOKEN)" node ./bin/publish.js
+  - script: NPM_AUTH_TOKEN="$(NPM_AUTH_TOKEN)" node ./bin/publish.js
     displayName: 'Package and publish to npm'

package.json

@@ -44,6 +44,7 @@
     "jsdom": "^11.11.0",
     "mocha": "^6.1.4",
     "node-pty": "0.7.6",
+    "nyc": "13",
     "puppeteer": "^1.15.0",
     "source-map-loader": "^0.2.4",
     "ts-loader": "^6.0.4",