Refactor hasStartDate- method from mixins

Make the following methods accept "timeframeItem"
explicitly as an argument:
hasStartDateForWeeks (from WeeksPresetMixin)
hasStartDateForMonths (from MonthsPresetMixin)
hasStartDateForQuarters (from QuartersPresetMixin)

This change makes it easier to reason about the
dependencies of the methods.

ee/app/assets/javascripts/roadmap/components/epic_item_timeline.vue

@@ -96,11 +96,11 @@ export default {
     },
     hasStartDate() {
       if (this.presetTypeQuarters) {
-        return this.hasStartDateForQuarter();
+        return this.hasStartDateForQuarter(this.timeframeItem);
       } else if (this.presetTypeMonths) {
-        return this.hasStartDateForMonth();
+        return this.hasStartDateForMonth(this.timeframeItem);
       } else if (this.presetTypeWeeks) {
-        return this.hasStartDateForWeek();
+        return this.hasStartDateForWeek(this.timeframeItem);
       }
       return false;
     },

ee/app/assets/javascripts/roadmap/components/milestone_item.vue

@@ -62,11 +62,11 @@ export default {
     },
     hasStartDate() {
       if (this.presetTypeQuarters) {
-        return this.hasStartDateForQuarter();
+        return this.hasStartDateForQuarter(this.timeframeItem);
       } else if (this.presetTypeMonths) {
-        return this.hasStartDateForMonth();
+        return this.hasStartDateForMonth(this.timeframeItem);
       } else if (this.presetTypeWeeks) {
-        return this.hasStartDateForWeek();
+        return this.hasStartDateForWeek(this.timeframeItem);
       }
       return false;
     },

ee/app/assets/javascripts/roadmap/mixins/months_preset_mixin.js

@@ -5,10 +5,10 @@ export default {
     /**
      * Check if current epic starts within current month (timeline cell)
      */
-    hasStartDateForMonth() {
+    hasStartDateForMonth(timeframeItem) {
       return (
-        this.startDateValues.month === this.timeframeItem.getMonth() &&
-        this.startDateValues.year === this.timeframeItem.getFullYear()
+        this.startDateValues.month === timeframeItem.getMonth() &&
+        this.startDateValues.year === timeframeItem.getFullYear()
       );
     },
     /**

ee/app/assets/javascripts/roadmap/mixins/quarters_preset_mixin.js

@@ -5,9 +5,9 @@ export default {
     /**
      * Check if current epic starts within current quarter (timeline cell)
      */
-    hasStartDateForQuarter() {
-      const quarterStart = this.timeframeItem.range[0];
-      const quarterEnd = this.timeframeItem.range[2];
+    hasStartDateForQuarter(timeframeItem) {
+      const quarterStart = timeframeItem.range[0];
+      const quarterEnd = timeframeItem.range[2];
 
       return (
         this.startDateValues.time >= quarterStart.getTime() &&

ee/app/assets/javascripts/roadmap/mixins/weeks_preset_mixin.js

@@ -5,9 +5,9 @@ export default {
     /**
      * Check if current epic starts within current week (timeline cell)
      */
-    hasStartDateForWeek() {
-      const firstDayOfWeek = this.timeframeItem;
-      const lastDayOfWeek = newDate(this.timeframeItem);
+    hasStartDateForWeek(timeframeItem) {
+      const firstDayOfWeek = timeframeItem;
+      const lastDayOfWeek = newDate(timeframeItem);
       lastDayOfWeek.setDate(lastDayOfWeek.getDate() + 6);
 
       return (

ee/spec/frontend/roadmap/mixins/months_preset_mixin_spec.js

@@ -39,7 +39,7 @@ describe('MonthsPresetMixin', () => {
           timeframeItem: mockTimeframeMonths[1],
         });
 
-        expect(wrapper.vm.hasStartDateForMonth()).toBe(true);
+        expect(wrapper.vm.hasStartDateForMonth(mockTimeframeMonths[1])).toBe(true);
       });
 
       it('returns false when Epic.startDate does not fall within timeframeItem', () => {
@@ -48,7 +48,7 @@ describe('MonthsPresetMixin', () => {
           timeframeItem: mockTimeframeMonths[1],
         });
 
-        expect(wrapper.vm.hasStartDateForMonth()).toBe(false);
+        expect(wrapper.vm.hasStartDateForMonth(mockTimeframeMonths[1])).toBe(false);
       });
     });
 

ee/spec/frontend/roadmap/mixins/quarters_preset_mixin_spec.js

@@ -39,7 +39,7 @@ describe('QuartersPresetMixin', () => {
           timeframeItem: mockTimeframeQuarters[1],
         });
 
-        expect(wrapper.vm.hasStartDateForQuarter()).toBe(true);
+        expect(wrapper.vm.hasStartDateForQuarter(mockTimeframeQuarters[1])).toBe(true);
       });
 
       it('returns false when Epic.startDate does not fall within timeframeItem', () => {
@@ -48,7 +48,7 @@ describe('QuartersPresetMixin', () => {
           timeframeItem: mockTimeframeQuarters[1],
         });
 
-        expect(wrapper.vm.hasStartDateForQuarter()).toBe(false);
+        expect(wrapper.vm.hasStartDateForQuarter(mockTimeframeQuarters[1])).toBe(false);
       });
     });
 

ee/spec/frontend/roadmap/mixins/weeks_preset_mixin_spec.js

@@ -39,7 +39,7 @@ describe('WeeksPresetMixin', () => {
           timeframeItem: mockTimeframeWeeks[1],
         });
 
-        expect(wrapper.vm.hasStartDateForWeek()).toBe(true);
+        expect(wrapper.vm.hasStartDateForWeek(mockTimeframeWeeks[1])).toBe(true);
       });
 
       it('returns false when Epic.startDate does not fall within timeframeItem', () => {
@@ -48,7 +48,7 @@ describe('WeeksPresetMixin', () => {
           timeframeItem: mockTimeframeWeeks[1],
         });
 
-        expect(wrapper.vm.hasStartDateForWeek()).toBe(false);
+        expect(wrapper.vm.hasStartDateForWeek(mockTimeframeWeeks[1])).toBe(false);
       });
     });