TT-39 fix: code coverage

Author: scastillo-jp

src/app/modules/shared/components/month-picker/month-picker.component.spec.ts

@@ -1,5 +1,6 @@
 import { waitForAsync, ComponentFixture, TestBed } from '@angular/core/testing';
-import { months } from 'moment';
+import * as moment from 'moment';
+import { NEVER } from 'rxjs';
 
 import { MonthPickerComponent } from './month-picker.component';
 
@@ -32,4 +33,16 @@ describe('MonthPickerComponent', () => {
     expect(component.dateSelected.emit({ monthIndex: month, year: year }));
   });
 
+  it('should add a year to current year', () => {
+    const year = moment().add(1, 'year').format('Y');
+    expect(component.selectedYearMoment.add(1, 'year').format('Y')).toEqual(year);
+    expect(component.updateYearText).toBeTruthy();
+  });
+
+  it('should subtract a year to current year', () => {
+    const year = moment().subtract(1, 'year').format('Y');
+    expect(component.selectedYearMoment.subtract(1, 'year').format('Y')).toEqual(year);
+    expect(component.updateYearText).toBeTruthy();
+  });
+
 });