Unit test for table model.

TableModelSpec.js

describe('table model', function() {

  var hud, tableModel;
  
  beforeEach(function(){
    hud = jasmine.createSpyObj('hud', ['info']);
    module('your-module-name', function($provide) {
      $provide.value('hud', hud);
    });
    inject(function(tableModelFactory) {
      tableModel = tableModelFactory('some/url');
    });
  });
  
  function expectThat(expectations) {
    expect(tableModel.data.length).toEqual(expectations.dataCount);
    expect(tableModel.isEmpty()).toEqual(expectations.empty);
    expect(tableModel.hasMore).toEqual(expectations.hasMore);
    expect(tableModel.noMoreAvailable).toEqual(expectations.noMore);
  }
  
  it('should initialize correctly', function() {
    expect(tableModel.data).toEqual([]);
    expectThat({dataCount:0, empty:true, hasMore: false, noMore: false});
  });
  
  it('should get page by page where name="smith" and then sort by "age"', inject(function($httpBackend) {
    $httpBackend.expectGET('some/url?name=smith').respond(200, [{id:1},{id:2}]);
    tableModel.search({name: 'smith'});
    $httpBackend.flush();
    expectThat({dataCount:2, empty:false, hasMore: true, noMore: false});
    
    $httpBackend.expectGET('some/url?name=smith&page=1').respond(200, [{id:3},{id:4}]);
    tableModel.getMore();
    $httpBackend.flush();
    expectThat({dataCount:4, empty:false, hasMore: true, noMore: false});
    
    $httpBackend.expectGET('some/url?name=smith&page=2').respond(200, []);
    tableModel.getMore();
    $httpBackend.flush();
    expectThat({dataCount:4, empty:false, hasMore: false, noMore: true});
    
    //Now let's test 'orderBy', do not care what exactly comes from the server.
    $httpBackend.expectGET('some/url?name=smith&orderBy=age:asc').respond(200, [{id:1},{id:2},{id:3}]);
    tableModel.orderBy('age:asc');
    $httpBackend.flush();
    expectThat({dataCount:3, empty:false, hasMore: true, noMore: false});

    $httpBackend.expectGET('some/url?name=smith&orderBy=age:asc&page=1').respond(200, []);
    tableModel.getMore();
    $httpBackend.flush();
    expectThat({dataCount:3, empty:false, hasMore: false, noMore: true});
  }));
  
  it('should display message when no data matching criteria', inject(function($httpBackend) {
    $httpBackend.expectGET('some/url').respond(200, []);
    tableModel.search({});
    $httpBackend.flush();
    expectThat({dataCount:0, empty:true, hasMore: false, noMore: true});
    expect(hud.info).toHaveBeenCalled();
  }));
  
});