change how to set max workers in CI

Author: ecraig12345

.circleci/config.yml

@@ -45,7 +45,7 @@ jobs:
           command: yarn prettier
       - run:
           name: Unit Tests
-          command: yarn test --maxWorkers=2
+          command: yarn test
       - run:
           name: Report coverage
           command: bash <(curl -s https://codecov.io/bash)

azure-pipelines.yml

@@ -10,14 +10,17 @@ trigger: [master]
 pool:
   vmImage: 'ubuntu-latest'
 
-steps:
-- task: ComponentGovernanceComponentDetection@0
-  inputs:
-    scanType: 'Register'
-    verbosity: 'Verbose'
-    alertWarningLevel: 'High'
-  displayName: Component governance registration
+variables:
+  # emulate circleci method of detecting whether build is running in CI or local
+  CI: 1
 
+steps:
+  - task: ComponentGovernanceComponentDetection@0
+    inputs:
+      scanType: 'Register'
+      verbosity: 'Verbose'
+      alertWarningLevel: 'High'
+    displayName: Component governance registration
 # Rest of build is not being used for now, but leaving setup for reference
 
 #   - task: NodeTool@0

build/gulp/tasks/test-unit.ts

@@ -18,6 +18,10 @@ const jestConfigFromArgv: Partial<JestPluginConfig> = {
   testFilePattern: argv.testFilePattern as string,
 }
 
+if (process.env.CI) {
+  jestConfigFromArgv.maxWorkers = 2
+}
+
 task(
   'test:jest:setup',
   parallel('build:docs:component-info', 'build:docs:component-menu-behaviors'),