Way to start background run without watch task

[WickyNilliams]

I'd like a way to start (and keep open) the karma server from grunt, without introducing the watch task. I use browserify for bundling etc so have no need for watch.

My current default task looks like:

grunt.registerTask("default", ["browserify:dev"]);

I'd like to also start the karma server/runner as part of this default task:

grunt.registerTask("default", ["karma:unit", "browserify:dev"]);

Karma starts but doesn't run any tests. If I start from the CLI directly, it works fine:

grunt karma:unit

Is there some combination of config that will get this working? If not, should there be?

[murphyj]

Just wondering can you use the karma:continuous goal to do this with singleRun: true ?
e.g.

continuous: {
                configFile: 'karma.conf.js',
                singleRun: true,
                browsers: ['PhantomJS']
            }