add specs for parser utils

mocks/dayjs.mock.js

@@ -0,0 +1,14 @@
+const dayjs = jest.requireActual('dayjs')
+
+let mockedDay = null
+
+const mockDayJs = (args, options) => {
+  return mockedDay || dayjs(args, options)
+}
+
+const setMockedDay = (args, options) => {
+  mockedDay = dayjs(args, options)
+  return mockedDay
+}
+
+module.exports = { mockDayJs, setMockedDay }

test/parser-utils.spec.js

@@ -0,0 +1,49 @@
+const { expect } = require('chai')
+const { mockDayJs, setMockedDay } = require('../mocks/dayjs.mock')
+const dayjs = jest.requireActual('dayjs')
+
+const parserUtils = require('../lib/parser-utils')
+
+jest.mock('dayjs', () => mockDayJs)
+
+describe('parserUtils', () => {
+  beforeEach(() => {
+    setMockedDay(dayjs())
+  })
+
+  describe('parse dates', () => {
+    it('should format start date', () => {
+      const { start } = parserUtils.parseDates(dayjs('2020-03-02 15:35:00'))
+
+      expect(start).to.deep.equal([ 2020, 3, 2, 15, 35 ])
+    })
+
+
+    it('should use current date for start date if not available', () => {
+      setMockedDay(dayjs('2020-01-01 12:00:00'))
+
+      const { start } = parserUtils.parseDates()
+
+      expect(start).to.deep.equal([ 2020, 1, 1 ])
+    })
+
+
+    it('should get duration in minutes based on end date', () => {
+      const { duration } = parserUtils.parseDates(
+        dayjs('2020-03-02 15:35:00'),
+        dayjs('2020-03-04 04:30:00')
+      )
+
+      expect(duration).to.deep.equal({ minutes: 2215 })
+    })
+
+
+    it('should get duration of 120 minutes if end time is missing', () => {
+      const { duration } = parserUtils.parseDates(
+        dayjs('2020-03-02 15:35:00'),
+      )
+
+      expect(duration).to.deep.equal({ minutes: 120 })
+    })
+  })
+})