Reporter may crash with ENOENT on empty specs

[khitrenovich]

When reporter is set to record video per test and keep videos for failed tests only, it may crash with ENOENT error when it has no content (for example, still WIP).

Sample spec:

it('sample test', function() {});

Sample failure:

      ✓ sample test
Error: ENOENT: no such file or directory, unlink '/sample/path/to/project/reports/videos/c927de20-84fc-460f-91ac-273892136ead.mov'
    at Error (native)
    at Object.fs.unlinkSync (fs.js:1089:18)
    at VideoReporter._stopScreencast (/sample/path/to/project/node_modules/protractor-video-reporter/lib/VideoReporter.js:104:8)
    at VideoReporter.specDone (/sample/path/to/project/node_modules/protractor-video-reporter/lib/VideoReporter.js:137:10)
    at dispatch (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1839:28)
    at ReportDispatcher.specDone (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1822:11)
    at Spec.specResultCallback [as resultCallback] (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:760:18)
    at complete (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:327:12)
    at QueueRunner.clearStack (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:555:9)
    at QueueRunner.run (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1754:12)
==== async task ====
    at Object.<anonymous> (/sample/path/to/project/node_modules/jasminewd2/index.js:94:33)
    at attemptAsync (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1789:24)
    at QueueRunner.run (/sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1745:16)
    at /sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1771:16
    at /sample/path/to/project/node_modules/jasmine/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:1716:9
    at /sample/path/to/project/node_modules/jasminewd2/index.js:18:5
    at /sample/path/to/project/node_modules/jasminewd2/index.js:100:21
    at /sample/path/to/project/node_modules/selenium-webdriver/lib/goog/base.js:1582:15
    at webdriver.promise.ControlFlow.runInNewFrame_ (/sample/path/to/project/node_modules/selenium-webdriver/lib/webdriver/promise.js:1654:20)

Sample Reporter configuration:

    var VideoReporter = require('protractor-video-reporter');
    jasmine.getEnv().addReporter(new VideoReporter({
      baseDirectory: path.join(__dirname, 'reports/videos/'),
      singleVideo: false,
      saveSuccessVideos: false
    }));

[khitrenovich]

Note that situation here is somehow similar to #8, but (my guess) here the file was not created yet because the spec is too short.

[benjaminapetersen]

I have also experienced this.

Related to #21.

When I remove the boolean flag, I do get an output, but not a video file:

test/reports/videos/protractor-specs.srt

This file contains the following:

1
00:00:00,004 --> 00:00:08,194
<font color="red">FAILED</font> should be able to create a new project

The boolean is not working.