Migrated code for most exercises. A few remain to be ported and adapted.

Author: tdd

.gitignore

@@ -1,2 +1,4 @@
 node_modules
 .DS_Store
+npm-debug.log
+TODO.md

problems/async_loops/setup.js renamed to exercises/async_loops/exercise.js

@@ -1,18 +1,17 @@
 "use strict"
 
-var input = require('../../input')
+var runner = require('../../runner')
+var util = require('util')
 
 function randomInt(min, max) {
-  return Math.floor((Math.random() * (max - min + 1)) + min)
+  return Math.floor((Math.random() * (max - min)) + min)
 }
 
-module.exports = input(new Array(randomInt(0, 20))
-.join(',')
-.split(',')
-.map(function() {
+var input = Array.apply(null, { length: randomInt(0, 20) }).map(function() {
   return randomInt(0, 10)
-})).wrap(function(input, mod) {
-  var numbers = input[0]
+})
+
+module.exports = runner.custom(function(fx, numbers) {
   var valid = 1
   var objects = [{quack: true}].concat(numbers.map(function(num) {
     switch(num) {
@@ -60,5 +59,5 @@ module.exports = input(new Array(randomInt(0, 20))
     }
   }))
 
-  console.log('Matched %d of %d valid objects from %d total.', mod.apply(mod, objects), valid, objects.length)
-})
+  return util.format('Matched %d of %d valid objects from %d total.', fx.apply(null, objects), valid, objects.length)
+})(input)

problems/async_loops/problem.md renamed to exercises/async_loops/problem.md

@@ -0,0 +1,46 @@
+"use strict"
+
+var loremIpsum = require('lorem-ipsum')
+var runner = require('../../runner')
+
+function randomInt(min, max) {
+  return Math.floor((Math.random() * (max - min)) + min)
+}
+
+function makeUser() {
+  return {
+    id: randomInt(0, 1000),
+    name: loremIpsum().split(' ').slice(0, 2).map(function(word) {
+      word[0] = word[0].toUpperCase();
+      return word;
+    }).join(' ')
+  }
+}
+
+function makeListOfUsers() {
+  return Array.apply(null, { length : randomInt(10, 100) }).map(makeUser)
+}
+
+var good = makeListOfUsers()
+var bad = makeListOfUsers()
+var lists = Array.apply(null, {length: 20}).map(function() {
+  return Array.apply(null, {length: 20}).map(function() {
+    if (Math.random() < 0.95) {
+      return good[randomInt(0, 10)]
+    } else {
+      return bad[randomInt(0, 10)]
+    }
+  })
+})
+
+module.exports = runner.custom(function(fx, good, lists) {
+  var test = fx(good)
+
+  var goodLists = 0
+
+  lists.forEach(function(list) {
+    test(list) && ++goodLists
+  })
+
+  return 'found ' + goodLists + ' good lists!'
+}).hideInput(good, lists)