fix: Blow up if invalid parser is specified _before_ running tests

src/index.js

@@ -15,14 +15,14 @@ const DEFAULT_OPTIONS = {
 
 export default function (options = {}, callback = function noop () {}) {
   let parsedOptions = Object.assign(DEFAULT_OPTIONS, options)
+  let parser = getParser(parsedOptions.parser)
   let testAttempt = 1
 
   function handleTestEnd (status, output = '') {
     if (status === 0) {
       callback(status)
     } else {
       if (++testAttempt <= parsedOptions.maxAttempts) {
-        let parser = getParser(parsedOptions.parser)
         log('info', `Using ${parser.name} to parse output\n`)
         let failedSpecs = parser.parse(output)
 

test/integration/bin.js

@@ -59,4 +59,18 @@ describe('Protractor Flake Executable', function () {
       done()
     })
   })
+
+  it('integration: exits with error if invalid parser is specified', (done) => {
+    let output = ''
+    let proc = spawnFlake(['--max-attempts', '3', '--parser', 'foo', '--', configPath('sharded')])
+    proc.stderr.on('data', (buff) => {
+      output += buff.toString()
+    })
+
+    proc.on('close', (status) => {
+      expect(status).to.equal(1)
+      expect(output).to.contain('Error: Invalid Parser Specified: foo')
+      done()
+    })
+  })
 })