Gather general cycle-related functions in cycle module

test/cycle.spec.js

@@ -0,0 +1,145 @@
+import chai from 'chai'
+import dirtyChai from 'dirty-chai'
+import cycleModule from '../lib/cycle'
+
+const expect = chai.expect
+chai.use(dirtyChai)
+
+describe('getCycleDay', () => {
+  it('works for a simple example', () => {
+    const bleedingDays = [{
+      date: '2018-05-10',
+      bleeding: {
+        value: 2
+      }
+    }, {
+      date: '2018-05-09',
+      bleeding: {
+        value: 2
+      }
+    }, {
+      date: '2018-05-03',
+      bleeding: {
+        value: 2
+      }
+    }]
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays}).getCycleDayNumber
+    const targetDate = '2018-05-17'
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(9)
+  })
+
+  it('works if some bleedings are exluded', function () {
+    const bleedingDays = [{
+      date: '2018-05-10',
+      bleeding: {
+        value: 2,
+        exclude: true
+      }
+    }, {
+      date: '2018-05-09',
+      bleeding: {
+        value: 2,
+        exclude: true
+      }
+    }, {
+      date: '2018-05-03',
+      bleeding: {
+        value: 2
+      }
+    }]
+    const targetDate = '2018-05-17'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays}).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(15)
+  })
+
+  it('gets the correct number if the target day is not in the current cycle', () => {
+    const bleedingDays = [{
+      date: '2018-05-13',
+      bleeding: {
+        value: 2
+      }
+    }, {
+      date: '2018-04-11',
+      bleeding: {
+        value: 2
+      }
+    }, {
+      date: '2018-04-10',
+      bleeding: {
+        value: 2
+      }
+    }]
+
+    const targetDate = '2018-04-27'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays}).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(18)
+  })
+
+  it('gets the correct number if the target day is the only bleeding day', () => {
+    const bleedingDays = [{
+      date: '2018-05-13',
+      bleeding: {
+        value: 2
+      }
+    }]
+
+    const targetDate = '2018-05-13'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays}).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(1)
+  })
+})
+
+describe('getCycleDay returns null', () => {
+  it('if there are no bleeding days', function () {
+    const bleedingDays = []
+    const targetDate = '2018-05-17'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays}).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.be.null()
+  })
+})
+
+describe('getCycleDay with cycle thresholds', () => {
+  const maxBreakInBleeding = 3
+
+  it('disregards bleeding breaks shorter than max allowed bleeding break in a bleeding period', () => {
+    const bleedingDays = [{
+      date: '2018-05-14',
+      bleeding: {
+        value: 2
+      }
+    }, {
+      date: '2018-05-10',
+      bleeding: {
+        value: 2
+      }
+    }]
+
+    const targetDate = '2018-05-17'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays, maxBreakInBleeding }).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(8)
+  })
+
+  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 targetDate = '2018-05-17'
+    const getCycleDayNumber = cycleModule({bleedingDaysSortedByDate: bleedingDays, maxBreakInBleeding }).getCycleDayNumber
+    const result = getCycleDayNumber(targetDate)
+    expect(result).to.eql(4)
+  })
+})