Writing jasmine unit test cases for button click event.

<!-- myfile.html-->
Keyword: <input type = "text" /><br/>
Country:<select>
<option>--Select Country--</option>
<option>....</option>
</select>
<button btn btn-primary ng-click = 'search()'>Search</button>
<button btn btn-primary>clear</button>
<!------- end of html ---->
//search.spec.js
describe("search spec or whatever", function(){
//.... some code here
var keyword, country,URL = "http://localhost/appname";
//... some more codes here
it('should retrieve the search results', function (){
keyword = 'keyword';
country = 'mycountry';
// I also want to check whether the user has clicked the button search how do I do it? expect (button.submit).click();???
// assume that the user enters keyword in the text box and selects mycountry from the dropdownlist box.
//so when the user clicks search the url will be of this form and how do I need write unit test case here?
var serv_res = $httpBackend.When('GET", URL + '?keyword =' + keyword + '&country = ' + country);
// so here what my expectations should be?
});
})