ci: Trigger an arm test on VSTS after CircleCI build (#14898)

* ci: Trigger an arm test on VSTS after CircleCI build

script/download-circleci-artifacts.js

@@ -0,0 +1,78 @@
+const args = require('minimist')(process.argv.slice(2))
+const nugget = require('nugget')
+const request = require('request')
+
+async function makeRequest (requestOptions, parseResponse) {
+  return new Promise((resolve, reject) => {
+    request(requestOptions, (err, res, body) => {
+      if (!err && res.statusCode >= 200 && res.statusCode < 300) {
+        if (parseResponse) {
+          const build = JSON.parse(body)
+          resolve(build)
+        } else {
+          resolve(body)
+        }
+      } else {
+        console.error('Error occurred while requesting:', requestOptions.url)
+        if (parseResponse) {
+          try {
+            console.log('Error: ', `(status ${res.statusCode})`, err || JSON.parse(res.body), requestOptions)
+          } catch (err) {
+            console.log('Error: ', `(status ${res.statusCode})`, err || res.body, requestOptions)
+          }
+        } else {
+          console.log('Error: ', `(status ${res.statusCode})`, err || res.body, requestOptions)
+        }
+        reject(err)
+      }
+    })
+  })
+}
+
+async function downloadArtifact (name, buildNum, dest) {
+  const circleArtifactUrl = `https://circleci.com/api/v1.1/project/github/electron/electron/${args.buildNum}/artifacts?circle-token=${process.env.CIRCLE_TOKEN}`
+  const artifacts = await makeRequest({
+    method: 'GET',
+    url: circleArtifactUrl,
+    headers: {
+      'Content-Type': 'application/json',
+      'Accept': 'application/json'
+    }
+  }, true).catch(err => {
+    console.log('Error calling CircleCI:', err)
+  })
+  const artifactToDownload = artifacts.find(artifact => {
+    return (artifact.path === name)
+  })
+  if (!artifactToDownload) {
+    console.log(`Could not find artifact called ${name} to download for build #${buildNum}.`)
+    process.exit(1)
+  } else {
+    console.log(`Downloading ${artifactToDownload.url}.`)
+    await downloadFile(artifactToDownload.url, dest)
+    console.log(`Successfully downloaded ${name}.`)
+  }
+}
+
+function downloadFile (url, directory) {
+  return new Promise((resolve, reject) => {
+    const nuggetOpts = {
+      dir: directory
+    }
+    nugget(url, nuggetOpts, (err) => {
+      if (err) {
+        reject(err)
+      } else {
+        resolve()
+      }
+    })
+  })
+}
+
+if (!args.name || !args.buildNum || !args.dest) {
+  console.log(`Download CircleCI artifacts.
+    Usage: download-circleci-artifacts.js [--buildNum=CIRCLE_BUILD_NUMBER] [--name=artifactName] [--dest]`)
+  process.exit(0)
+} else {
+  downloadArtifact(args.name, args.buildNum, args.dest)
+}