Initial Azure Pipelines support (Linux, Windows, and macOS)

Author: willsmythe

.azure-pipelines-steps.yml

@@ -0,0 +1,44 @@
+#
+# CI build and test steps. See azure-pipelines.yml for job details.
+# 
+
+steps:
+- checkout: self
+
+# Ensure Node.js 10 is active
+- task: NodeTool@0
+  inputs:
+    versionSpec: '10.x'
+  displayName: 'Use Node.js 10'
+
+# Ensure Python 2.7 is active
+- task: UsePythonVersion@0
+  inputs:
+    versionSpec: '2.7'
+  displayName: 'Use Python 2.7'
+
+# Workaround to move repo source files into a "jest" folder (see azure-pipelines.yml for details)
+- script: |
+    cd /
+    mv $(Build.Repository.LocalPath) $(JEST_DIR)
+    mkdir $(Build.Repository.LocalPath)
+  displayName: 'Move source into jest folder'
+
+# Run yarn to install dependencies and build
+- script: yarn
+  workingDirectory: $(JEST_DIR)
+  displayName: 'Install dependencies and build'
+
+# Run test-ci-partial
+- script: yarn run test-ci-partial
+  workingDirectory: $(JEST_DIR)
+  displayName: 'Run tests'
+
+# Publish CI test results
+- task: PublishTestResults@2
+  inputs:
+    testResultsFiles: '**/reports/junit/*.xml'
+    searchFolder: $(JEST_DIR)
+    testRunTitle: 'CI Tests $(Agent.OS)'
+  displayName: 'Publish test results'
+  condition: succeededOrFailed()

.azure-pipelines.yml

@@ -0,0 +1,38 @@
+#
+# Azure Pipelines CI configuration for Linux, Windows, and macOS.
+#
+
+jobs:
+- job: Linux
+  pool:
+    vmImage: ubuntu-16.04  
+  steps:
+  - template: .azure-pipelines-steps.yml
+
+- job: Windows  
+  pool:
+    vmImage: vs2017-win2016  
+  steps:
+  - script: git config --global core.autocrlf false
+    displayName: 'Clone with LF preserved'
+  
+  - script: choco install hg
+    displayName: 'Install Mercurial'
+  
+  - template: .azure-pipelines-steps.yml
+
+- job: macOS
+  pool:
+    vmImage: macos-10.13
+  steps:
+  - script: brew install mercurial
+    displayName: 'Install Mercurial'    
+
+  - template: .azure-pipelines-steps.yml
+
+variables:
+  # Ensures output produced by Jest for certain tests includes ANSI escape characters (needed to match snapshots)
+  FORCE_COLOR: 1
+  # Default checkout directory is "s", but inline snapshot tests will fail due to assumption that Jest is running under a "jest" folder
+  # (see packages/jest-message-util/src/index.js PATH_JEST_PACKAGES)
+  JEST_DIR: $(Agent.BuildDirectory)/jest

e2e/Utils.js

@@ -137,7 +137,7 @@ export const createEmptyPackage = (
 };
 
 export const extractSummary = (stdout: string) => {
-  const match = stdout.match(
+  const match = stdout.replace(/(?:\\[rn])+/g, '\n').match(
     /Test Suites:.*\nTests.*\nSnapshots.*\nTime.*(\nRan all test suites)*.*\n*$/gm,
   );
   if (!match) {

e2e/runJest.js

@@ -31,7 +31,7 @@ export default function runJest(
   args?: Array<string>,
   options: RunJestOptions = {},
 ) {
-  const isRelative = dir[0] !== '/';
+  const isRelative = !path.isAbsolute(dir);
 
   if (isRelative) {
     dir = path.resolve(__dirname, dir);
@@ -101,7 +101,7 @@ export const until = async function(
   text: string,
   options: RunJestOptions = {},
 ) {
-  const isRelative = dir[0] !== '/';
+  const isRelative = !path.isAbsolute(dir);
 
   if (isRelative) {
     dir = path.resolve(__dirname, dir);