Add specs for error cases

npm/test/errors.js

@@ -0,0 +1,62 @@
+var fs = require('fs')
+var tape = require('tape')
+var path = require('path')
+var childProcess = require('child_process')
+
+tape('fails for unsupported platforms', function (t) {
+  install({npm_config_platform: 'android'}, function (code, stderr) {
+    t.notEqual(stderr.indexOf('Electron builds are not available on platform: android'), -1, 'has error message')
+    t.equal(code, 1, 'exited with 1')
+    t.end()
+  })
+})
+
+tape('fails for unknown architectures', function (t) {
+  install({
+    npm_config_arch: 'midcentury',
+    npm_config_platform: 'win32',
+    HOME: process.env.HOME,
+    USERPROFILE: process.env.USERPROFILE
+  }, function (code, stderr) {
+    t.notEqual(stderr.indexOf('Failed to find Electron'), -1, 'has error message')
+    t.notEqual(stderr.indexOf('win32-midcentury'), -1, 'has error message')
+    t.equal(code, 1, 'exited with 1')
+    t.end()
+  })
+})
+
+var install = function (env, callback) {
+  removeVersionFile()
+
+  var installPath = path.join(__dirname, '..', 'install.js')
+  var installProcess = childProcess.fork(installPath, {
+    silent: true,
+    env: env
+  })
+
+  var stderr = ''
+  installProcess.stderr.on('data', function (data) {
+    stderr += data
+  })
+
+  installProcess.on('close', function (code) {
+    restoreVersionFile()
+    callback(code, stderr)
+  })
+}
+
+var versionPath = path.join(__dirname, '..', 'dist', 'version')
+var versionContents = null
+function removeVersionFile () {
+  if (fs.existsSync(versionPath)) {
+    versionContents = fs.readFileSync(versionPath)
+    fs.unlinkSync(versionPath)
+  }
+}
+
+function restoreVersionFile () {
+  if (versionContents != null) {
+    fs.writeFileSync(versionPath, versionContents)
+    versionContents = null
+  }
+}