beforeEach(function () {
    calculator = ObservationBaselineCalculator();
    observation = Observation();
    view = ObservationSummaryView({
      baselineCalculator: calculator,
      observation: observation
    });

    renderSpy = sinon.spy(view, 'render');
  });
  _createSummaryTab = function (observation) {
    var el = document.createElement('div'),
        summaryView = null;

    el.classList.add('summary-wrapper');
    summaryView = ObservationSummaryView({
      el: el,
      observation: observation,
      baselineCalculator: _calculator
    });

    return {
      title: 'Summary',
      content: el
    };
  };