Gulp-protractor keep saying "Spec patterns did not match any files" - angularjs

Question

I'm trying to run my end to end tests written with protractor and jasmine. It works perfectly when I call protractor protractor.config.js directly.
However, when I use gulp-protractor, I keep getting the "Spec patterns did not match any files" error and the tests do not run.
This is my protractor runner gulp task:
gulp.task('protractor-run', function (done) {
return gulp.src(["./e2e-tests/**/*-spec.js"])
.pipe(protractor({
configFile: "./config/protractor-config.js",
args: ['--baseUrl', 'http://127.0.0.1:8000']
}))
.on('error', function(e) { throw e })
});
and this is the error:
WARNING - pattern C:\path\to\app\e2e-tests\login\login-spec.js did not math any files.
[launcher] Process exited with error code 1
C:\path\to\app\node_modules\protractor\node_modules\q\q.js:126
throw e;
^
Error: Spec patterns did not match any files.
What am I missing?

Answer 1

I managed to get it working. By providing an empty readable stream. Then you specify your spec files in the config file instead.
var protractor = require('gulp-protractor').protractor;
gulp.task('protractor', ['webdriverUpdate'],function(){
return gulp.src([])
.pipe(protractor({
configFile: __dirname + '/protractor.conf.js'
}));
});
also don't forget the webdriverUpdate
var webdriverUpdate = require('gulp-protractor').webdriver_update;
gulp.task('webdriverUpdate', webdriverUpdate );
and in the config file this:
seleniumServerJar: './node_modules/protractor/selenium/selenium-server-standalone-2.47.1.jar',
With this I stopped getting the error.
Update
The issue #2551 is closed and fixed since 2.5.0

Answer 2

I resolved this in a gulpfile that launches protractor tests by putting a file path into the parameter of gulp.src(['file_path_goes_here']). The task I was trying to run had no file path between the brackets, and was throwing the error.
gulp.task('works', 'Run some tests', function() {
gulp.src(['path/to/test.spec.js'])
.pipe(protractor({
configFile: __dirname + '/../test/protractor.conf.js',
args: ['--baseUrl', 'http://localhost:9099']
}))
});
gulp.task('error', 'Run feature tests locally', function() {
gulp.src([''])
.pipe(protractor({
configFile: __dirname + '/../test/protractor_local.conf.js',
args: ['--baseUrl', 'http://localhost:9099']
}))
});