Merge pull request #23 from manuporto/master

Convert "pecks" to litres

Author: cannawen

src/conversion_helper.js

@@ -344,6 +344,14 @@ const unitLookupList = [
     "conversionFunction" : (i) => volumeMap(i * 3.78541),
     "ignoredUnits" : ["imperial"].concat(metricVolumeUnits)
   },
+  {
+    "imperialUnits" : [/pecks?/, /pks?/],
+    "standardInputUnit" : " pk (US)",
+    "isInvalidInput" : isZeroOrNegative,
+    "isWeaklyInvalidInput" : isHyperbole,
+    "conversionFunction" : (i) => volumeMap(i * 8.80977),
+    "ignoredUnits" : ["imperial"].concat(metricVolumeUnits)
+  },
   {
     "imperialUnits" : [/(?:°|degrees?) ?(?:f|fahrenheit)/, /fahrenheit/],
     "weakImperialUnits" : ["f", "degrees?"],

test/converter-test.js

@@ -276,6 +276,25 @@ describe('Converter', () => {
       });
     });
 
+    context('pecks', () => {
+      it('should convert', () => {
+        testConvert(
+          [
+            "1 peck",
+            "13 pecks",
+            "5 pk",
+            "5pk",
+          ], 
+          {
+            "1 pk (US)" : "9 L",
+            "13 pk (US)": "115 L",
+            "5 pk (US)" : "44 L",
+            "5 pk (US)" : "44 L"
+          }
+        );
+      });
+    });
+
     context('°F', () => {
       it('should convert', () => {
         testConvert(