How to assert header exists, but don't care about value

[nodesocket]

How can I assert that a header exists, but I don't care about the value? I.E. only care that the header key exists.

Thanks.

[sasikanth]

Here is a sample for you..

var frisby = require("frisby");

frisby.create("Sample header test case")
    .get("http://httpbin.org/response-headers?key=value")
    .expectHeader("key",'value')  // checks for equality.
    .expectHeaderToMatch("key",'')  // checks if 'key' exists & matches the pattern ''
    .expectHeaderToMatch("key",'lue') // checks if 'key' exists & matches the pattern 'lue'
    .after(function(err,res,body){
        console.log(res.headers);
        expect(res.headers.key).toBeDefined();
        expect(res.headers.otherkey).not.toBeDefined(); 
        expect(res.headers.hasOwnProperty('key')).toBe(true); 
        expect(res.headers.key).toEqual(jasmine.any(String));
        expect(res.headers.key).not.toEqual(jasmine.any(Number));  
        expect(res.headers.key).not.toEqual(jasmine.any(Object)); 
        expect(res.headers.key).toMatch('');
    })  
    .toss();

• Reason to use these jasmine-asserts is currently Frisby asserts convert the headers to lowercase and then verify the assertions.
• If your tests need to validate the headers (including case sensitivity) then use any of the above jasmine-asserts according to your requirement.
• If you are looking for something like expectHeaderExists("headerKey"). It is not available. You could use .expectHeaderToMatch("headerKey",'') for now. However, HEADERKEY / headerKEY mean the same as it converts to lowercase before verifying.

~ Sasi

[nodesocket]

Thanks. expectHeaderExists('X-Foo-Bar') would be useful. Maybe worth adding in.

[vlucas]

Frisby v2 has a use-case for this. If you only supply a single argument, it only checks for the header's existence: .expect('header', 'X-Foo-bar').