How to stop protractor from running further testcases on failure?

Here is my solution to skip tests on first fail with Jasmine 2 and Protractor. Hope it helps.

exports.config = {
    onPrepare: function () {
        //skip tests after first fail
        var specs = [];
        var orgSpecFilter = jasmine.getEnv().specFilter;
        jasmine.getEnv().specFilter = function (spec) {
            specs.push(spec);
            return orgSpecFilter(spec);
        };
        jasmine.getEnv().addReporter(new function () {
            this.specDone = function (result) {
                if (result.failedExpectations.length > 0) {
                    specs.forEach(function (spec) {
                        spec.disable()
                    });
                }
            };
        });
    }
};

In case of jasmine testing framework, you are not the first asking about it.

There are relevant open discussions/issues on exiting after a first failure, --fail-fast option:

• Bail on first failure
• --fail-fast option?
• Please add --fail-fast support

Long story short, this is an open issue and some day jasmine would have the functionality built-in. Currently, use a third-party jasmine-bail-fast module.

Aside from that, there is a handy realtimeFailure jasmine setting. If you set it to true it would not fail the whole test run, but it would show errors in a real time - immediately after happening - this can possibly cover your use case. Set it in jasmineNodeOpts:

exports.config = {
    seleniumAddress: 'http://127.0.0.1:4444/wd/hub',

    ...

    jasmineNodeOpts: {
        realtimeFailure: true
    }
}