Ignore secondary symptom peak after end of temperature evaluation

lib/sympto/cervix.js

@@ -2,7 +2,6 @@ export default function (cycleDays, tempEvalEndIndex) {
   const notDetected = { detected: false }
   const cervixDays = cycleDays
     .filter(day => day.cervix && !day.cervix.exclude)
-    .filter(day => typeof day.cervix.opening === 'number' && typeof day.cervix.firmness === 'number')
 
   // we search for the day of cervix peak, which must:
   // * have fertile cervix values
@@ -19,14 +18,19 @@ export default function (cycleDays, tempEvalEndIndex) {
     const threeFollowingDays = cervixDays.slice(i + 1, i + 4)
     if (threeFollowingDays.length < 3) continue
 
-    // no other fertile cervix value may occur until temperature evaluation has
-    // been completed
     const fertileCervixOccursIn3FollowingDays = threeFollowingDays.some(day => {
       return !isClosedAndHard(day.cervix)
     })
     if (fertileCervixOccursIn3FollowingDays) continue
 
     const cycleDayIndex = cycleDays.indexOf(day)
+
+    // if temperature evaluation has been completed an we still haven't found
+    // a candidate, there is no cervix shift
+    if (cycleDayIndex > tempEvalEndIndex) return notDetected
+
+    // no other fertile cervix value may occur until temperature evaluation has
+    // been completed
     const relevantDays = cycleDays
       .slice(cycleDayIndex + 1, tempEvalEndIndex + 1)
       .filter(day => day.cervix && !day.cervix.exclude)