Convenience wrapper for testing HTTP headers

angular.expect-headers.js

function expectRequest (method, url, data) {
  var $httpBackend;

  inject(function ($injector) {
    $httpBackend = $injector.get('$httpBackend');
  });

  function withHeaders (expectedHeaders) {
    return $httpBackend.expect(method, url, data, function (actualHeaders) {
      for (var header in expectedHeaders) {
        if (actualHeaders[header] !== expectedHeaders[header]) {
          return false;
        }
      }

      return true;
    });
  }

  return {
    withHeaders: withHeaders
  };
}

example.js

it('should do a thing', function () {
  
  expectRequest('GET', 'http://place.com/thing')
    .withHeaders({
      Authorization: 'FuzzyMonkeys'
    })
    .respond({
      message: 'You are the fuzziest monkey.'
    });
    
  $http.get('http://place.com/thing', {
    headers: {
      Authorization: 'BaldMonkeys'
    }
  });
  
});