diff --git a/test/cycle.spec.js b/test/cycle.spec.js
index 0ad8d3c3382b15b3389c4036d86301c9a45c93b3..a44864798718d328d3235d5df7a689f8bba3c75c 100644
--- a/test/cycle.spec.js
+++ b/test/cycle.spec.js
@@ -5,237 +5,6 @@ import cycleModule from '../lib/cycle'
 const expect = chai.expect
 chai.use(dirtyChai)
 
-describe('getPreviousCycle', () => {
-  it('gets previous cycle', () => {
-    const cycleDaysSortedByDate = [
-      {
-        date: '2018-07-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-06-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-05-04',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-03',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-04-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-04',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-03',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-02',
-        bleeding: { value: 2 }
-      },
-    ]
-
-    const cycleStarts = [
-      '2018-07-05',
-      '2018-06-05',
-      '2018-05-03',
-      '2018-04-02'
-    ]
-
-    const { getPreviousCycle } = cycleModule({
-      cycleDaysSortedByDate,
-      cycleStartsSortedByDate: cycleDaysSortedByDate.filter(d => {
-        return cycleStarts.includes(d.date)
-      })
-    })
-    const result = getPreviousCycle('2018-06-08')
-    expect(result).to.eql([
-      {
-        date: '2018-05-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-05-04',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-03',
-        bleeding: { value: 2 }
-      }
-    ])
-  })
-
-  it('returns null when target day is not in a cyle', () => {
-    const cycleDaysSortedByDate = [
-      {
-        date: '2018-07-05',
-      },
-      {
-        date: '2018-06-05',
-      },
-      {
-        date: '2018-05-05',
-      },
-      {
-        date: '2018-05-04',
-      },
-      {
-        date: '2018-05-03',
-      },
-      {
-        date: '2018-04-05',
-      },
-      {
-        date: '2018-04-04',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-03',
-      },
-      {
-        date: '2018-04-02',
-      },
-    ]
-
-    const cycleStarts = []
-
-    const { getPreviousCycle } = cycleModule({
-      cycleDaysSortedByDate,
-      cycleStartsSortedByDate: cycleDaysSortedByDate.filter(d => {
-        return cycleStarts.includes(d.date)
-      })
-    })
-    const result = getPreviousCycle('2018-06-08')
-    expect(result).to.eql(null)
-  })
-
-  it('returns null when there is no previous cycle', () => {
-    const cycleDaysSortedByDate = [
-      {
-        date: '2018-07-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-06-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-05-04',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-03',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-04-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-04',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-03',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-02',
-        bleeding: { value: 2 }
-      },
-    ]
-
-    const cycleStarts = [
-      '2018-07-05',
-      '2018-06-05',
-      '2018-05-03',
-      '2018-04-02'
-    ]
-
-    const { getPreviousCycle } = cycleModule({
-      cycleDaysSortedByDate,
-      cycleStartsSortedByDate: cycleDaysSortedByDate.filter(d => {
-        return cycleStarts.includes(d.date)
-      })
-    })
-    const result = getPreviousCycle('2018-04-18')
-    expect(result).to.eql(null)
-  })
-
-  it('returns null when the previous cycle > maxcyclelength', () => {
-    const cycleDaysSortedByDate = [
-      {
-        date: '2018-07-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-06-05',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-05-04',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-05-03',
-        bleeding: { value: 2 }
-      },
-      {
-        date: '2018-04-05',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-04',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-03',
-        mucus: { value: 2 }
-      },
-      {
-        date: '2018-04-02',
-        bleeding: { value: 2 }
-      },
-    ]
-
-    const cycleStarts = [
-      '2018-07-05',
-      '2018-06-05',
-      '2018-05-03',
-      '2018-04-02'
-    ]
-
-    const { getPreviousCycle } = cycleModule({
-      cycleDaysSortedByDate,
-      cycleStartsSortedByDate: cycleDaysSortedByDate.filter(d => {
-        return cycleStarts.includes(d.date)
-      }),
-      maxCycleLength: 2
-    })
-    const result = getPreviousCycle('2018-06-08')
-    expect(result).to.eql(null)
-  })
-})
-
 describe('getCyclesBefore', () => {
   it('gets previous cycles', () => {
     const cycleDaysSortedByDate = [
@@ -1322,4 +1091,4 @@ describe('getMensesDaysRightAfter', () => {
       expect(result).to.eql([])
     })
   })
-})
\ No newline at end of file
+})
diff --git a/test/get-previous-cycle.spec.js b/test/get-previous-cycle.spec.js
new file mode 100644
index 0000000000000000000000000000000000000000..d67546fa88dae6fc897b020592d78e60d87cfc0c
--- /dev/null
+++ b/test/get-previous-cycle.spec.js
@@ -0,0 +1,72 @@
+import chai from 'chai'
+import dirtyChai from 'dirty-chai'
+import cycleModule from '../lib/cycle'
+
+const { expect } = chai
+chai.use(dirtyChai)
+
+const mayCycle = [
+  { date: '2018-05-05' },
+  { date: '2018-05-04' },
+  { date: '2018-05-03' },
+]
+
+const cycleDaysSortedByDate = [
+  { date: '2018-07-05' },
+  { date: '2018-06-05' },
+  ...mayCycle,
+  { date: '2018-04-05' },
+  { date: '2018-04-04' },
+  { date: '2018-04-03' },
+  { date: '2018-04-02' },
+]
+
+const cycleStartsSortedByDate = [
+  { date: '2018-07-05' },
+  { date: '2018-06-05' },
+  { date: '2018-05-03' },
+  { date: '2018-04-02' },
+]
+
+describe('getPreviousCycle', () => {
+  it('gets previous cycle', () => {
+
+    const { getPreviousCycle } = cycleModule({
+      cycleDaysSortedByDate,
+      cycleStartsSortedByDate,
+    })
+
+    expect(getPreviousCycle('2018-06-08')).to.eql(mayCycle)
+  })
+
+  it('returns null when target day is not in a cyle', () => {
+
+    const { getPreviousCycle } = cycleModule({
+      cycleDaysSortedByDate,
+      cycleStartsSortedByDate: [],
+    })
+
+    expect(getPreviousCycle('2018-06-08')).to.eql(null)
+  })
+
+  it('returns null when there is no previous cycle', () => {
+
+    const { getPreviousCycle } = cycleModule({
+      cycleDaysSortedByDate,
+      cycleStartsSortedByDate,
+    })
+
+    expect(getPreviousCycle('2018-04-18')).to.eql(null)
+  })
+
+  it('returns null when the previous cycle > maxcyclelength', () => {
+
+    const { getPreviousCycle } = cycleModule({
+      cycleDaysSortedByDate,
+      cycleStartsSortedByDate,
+      maxCycleLength: 2,
+    })
+
+    expect(getPreviousCycle('2018-06-08')).to.eql(null)
+  })
+})