drip/test/is-menses-start.spec.js

import chai from 'chai'
import dirtyChai from 'dirty-chai'
import cycleModule from '../lib/cycle'

const { expect } = chai
chai.use(dirtyChai)

describe('isMensesStart', () => {
  it('works for simple menses start', () => {
    const cycleDaysSortedByDate = [
      {
        date: '2018-05-04',
      },
      {
        date: '2018-05-03',
        bleeding: { value: 1 }
      },
      {
        date: '2018-05-02',
        bleeding: { value: 1 }
      },
      {
        date: '2018-05-01',
        bleeding: { value: 1 }
      },
      {
        date: '2018-04-30',
      }
    ]

    const { isMensesStart } = cycleModule({
      cycleDaysSortedByDate,
      bleedingDaysSortedByDate: cycleDaysSortedByDate.filter(d => d.bleeding)
    })
    const start = isMensesStart(cycleDaysSortedByDate[3])
    expect(start).to.be.true()
    expect(isMensesStart(cycleDaysSortedByDate[0])).to.be.false()
    expect(isMensesStart(cycleDaysSortedByDate[1])).to.be.false()
    expect(isMensesStart(cycleDaysSortedByDate[2])).to.be.false()
    expect(isMensesStart(cycleDaysSortedByDate[4])).to.be.false()
  })

  it('works with previous excluded value', () => {
    const cycleDaysSortedByDate = [
      {
        date: '2018-06-01',
        bleeding: { value: 2 }
      },
      {
        date: '2018-05-01',
        bleeding: { value: 2 }
      },
      {
        date: '2018-04-30',
        bleeding: { value: 2 , exclude: true}
      },
    ]

    const { isMensesStart } = cycleModule({
      cycleDaysSortedByDate,
      bleedingDaysSortedByDate: cycleDaysSortedByDate.filter(d => d.bleeding)
    })
    const start = isMensesStart(cycleDaysSortedByDate[1])
    expect(start).to.be.true()
    const notStart = isMensesStart(cycleDaysSortedByDate[2])
    expect(notStart).to.be.false()
  })

  it('returns false when day has no bleeding', () => {
    const cycleDaysSortedByDate = [
      {
        date: '2018-06-01',
      },
      {
        date: '2018-05-01',
      },
      {
        date: '2018-04-30',
        bleeding: { value: 2 , exclude: true}
      },
    ]

    const { isMensesStart } = cycleModule({
      cycleDaysSortedByDate,
      bleedingDaysSortedByDate: cycleDaysSortedByDate.filter(d => d.bleeding)
    })
    const start = isMensesStart(cycleDaysSortedByDate[0])
    expect(start).to.be.false()
  })

  it('returns false when there is a previous bleeding day within the threshold', () => {
    const cycleDaysSortedByDate = [
      {
        date: '2018-06-01',
      },
      {
        date: '2018-05-01',
      },
      {
        date: '2018-04-30',
        bleeding: { value: 2 }
      },
      {
        date: '2018-04-29'
      },
      {
        date: '2018-04-28',
        bleeding: { value: 2 }
      },
    ]

    const { isMensesStart } = cycleModule({
      cycleDaysSortedByDate,
      bleedingDaysSortedByDate: cycleDaysSortedByDate.filter(d => d.bleeding)
    })
    const start = isMensesStart(cycleDaysSortedByDate[2])
    expect(start).to.be.false()
  })

  it('returns true when there is a previous excluded bleeding day within the threshold', () => {
    const cycleDaysSortedByDate = [
      {
        date: '2018-06-01',
      },
      {
        date: '2018-05-01',
      },
      {
        date: '2018-04-30',
        bleeding: { value: 2 }
      },
      {
        date: '2018-04-29'
      },
      {
        date: '2018-04-28',
        bleeding: { value: 2 , exclude: true}
      },
    ]

    const { isMensesStart } = cycleModule({
      cycleDaysSortedByDate,
      bleedingDaysSortedByDate: cycleDaysSortedByDate.filter(d => d.bleeding)
    })
    const start = isMensesStart(cycleDaysSortedByDate[2])
    expect(start).to.be.true()
  })
  describe('with cycle thresholds', () => {
    const maxBreakInBleeding = 3

    it('disregards bleeding breaks equal to maxAllowedBleedingBreak in a bleeding period', () => {
      const bleedingDays = [{
        date: '2018-05-14',
        bleeding: {
          value: 2
        }
      }, {
        date: '2018-05-10',
        bleeding: {
          value: 2
        }
      }]

      const isMensesStart = cycleModule({
        bleedingDaysSortedByDate: bleedingDays,
        maxBreakInBleeding
      }).isMensesStart
      const result = isMensesStart(bleedingDays[0])
      expect(result).to.be.false()
    })

    it('counts bleeding breaks longer than maxAllowedBleedingBreak in a bleeding period', () => {
      const bleedingDays = [{
        date: '2018-05-14',
        bleeding: {
          value: 2
        }
      }, {
        date: '2018-05-09',
        bleeding: {
          value: 2
        }
      }]

      const isMensesStart = cycleModule({
        bleedingDaysSortedByDate: bleedingDays,
        maxBreakInBleeding
      }).isMensesStart
      const result = isMensesStart(bleedingDays[0])
      expect(result).to.be.true()
    })
  })
})