Update fp mapping with a test to catch potentially missed wrappers.

lib/fp/baseConvert.js

@@ -99,7 +99,10 @@ function baseConvert(util, name, func) {
 
   var wrappers = {
     'iteratee': function(iteratee) {
-      return function(func, arity) {
+      return function() {
+        var func = arguments[0],
+            arity = arguments[1];
+
         arity = arity > 2 ? (arity - 2) : 1;
         func = iteratee(func);
         var length = func.length;

lib/fp/mapping.js

@@ -74,31 +74,42 @@ module.exports = {
 
   /** Used to map ary to method names. */
   'aryMethod': {
-    1: (
-      'attempt,ceil,create,curry,curryRight,floor,fromPairs,iteratee,invert,over,' +
-      'overEvery,overSome,memoize,method,methodOf,mixin,rest,reverse,round,' +
-      'runInContext,template,trim,trimLeft,trimRight,uniqueId,words').split(','),
-    2: (
-      'add,ary,assign,at,bind,bindKey,chunk,cloneDeepWith,cloneWith,concat,countBy,',
-      'curryN,curryRightN,debounce,defaults,defaultsDeep,delay,difference,drop,' +
-      'dropRight,dropRightWhile,dropWhile,endsWith,eq,every,extend,filter,find,' +
-      'find,findIndex,findKey,findLast,findLastIndex,findLastKey,flatMap,forEach,' +
-      'forEachRight,forIn,forInRight,forOwn,forOwnRight,get,groupBy,gt,gte,has,' +
-      'hasIn,includes,indexBy,indexOf,intersection,invoke,invokeMap,isEqual,' +
-      'isMatch,lastIndexOf,lt,lte,map,mapKeys,mapValues,matchesProperty,maxBy,' +
-      'mean,minBy,merge,omit,orderBy,overArgs,pad,padLeft,padRight,parseInt,' +
-      'partition,pick,pull,pullAll,pullAt,random,range,rangeRight,rearg,reject,' +
-      'remove,repeat,result,sampleSize,some,sortBy,sortedIndexBy,sortedLastIndexBy,' +
-      'sortedUniqBy,split,startsWith,subtract,sumBy,take,takeRight,takeRightWhile,' +
-      'takeWhile,throttle,times,truncate,union,uniqBy,uniqWith,without,wrap,xor,' +
-      'zip,zipObject').split(','),
-    3: (
-      'assignWith,assignInWith,clamp,differenceBy,differenceWith,getOr,inRange,' +
-      'intersectionBy,intersectionWith,isEqualWith,isMatchWith,mergeWith,omitBy,' +
-      'pickBy,pullAllBy,reduce,reduceRight,replace,set,slice,transform,unionBy,' +
-      'unionWith,xorBy,xorWith,zipWith').split(','),
-    4:
-      ['fill', 'setWith']
+    1:[
+        'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
+        'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
+        'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
+        'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'unset', 'words'
+      ],
+    2:[
+        'add', 'after', 'ary', 'assign', 'at', 'before', 'bind', 'bindKey',
+        'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
+        'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
+        'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
+        'every', 'extend', 'filter', 'find', 'find', 'findIndex', 'findKey',
+        'findLast', 'findLastIndex', 'findLastKey', 'flatMap', 'forEach',
+        'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
+        'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
+        'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf',
+        'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty', 'maxBy',
+        'mean', 'merge', 'minBy', 'omit', 'orderBy', 'overArgs', 'pad', 'padEnd',
+        'padStart', 'parseInt', 'partition', 'pick', 'pull', 'pullAll', 'pullAt',
+        'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove', 'repeat',
+        'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex', 'sortedIndexOf',
+        'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith',
+        'subtract', 'sumBy', 'take', 'takeRight', 'takeRightWhile', 'takeWhile',
+        'tap', 'throttle', 'thru', 'times', 'truncate', 'union', 'uniqBy', 'uniqWith',
+        'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject'
+      ],
+    3:[
+        'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
+        'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
+        'isMatchWith', 'mergeWith', 'omitBy', 'pickBy', 'pullAllBy', 'reduce',
+        'reduceRight', 'replace', 'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy',
+        'transform', 'unionBy', 'unionWith', 'xorBy', 'xorWith', 'zipWith'
+      ],
+    4:[
+        'fill', 'setWith'
+      ]
   },
 
   /** Used to map ary to rearg configs by method ary. */
@@ -119,7 +130,7 @@ module.exports = {
     'transform': [2, 0, 1]
   },
 
-  /** Used to iterate `mapping.aryMethodMap` keys. */
+  /** Used to iterate `mapping.aryMethod` keys. */
   'caps': [1, 2, 3, 4],
 
   /** Used to map keys to other keys. */

test/test-fp.js

@@ -67,6 +67,22 @@
 
   console.log('Running lodash/fp tests.');
 
+  QUnit.module('method arity checks');
+
+  (function() {
+    QUnit.test('should wrap methods with an arity > `1`', function(assert) {
+      assert.expect(1);
+
+      var methodNames = _.filter(_.functions(fp), function(methodName) {
+        return fp[methodName].length > 1;
+      });
+
+      assert.deepEqual(methodNames, []);
+    });
+  }());
+
+  /*--------------------------------------------------------------------------*/
+
   QUnit.module('method aliases');
 
   (function() {