text: function prime(value) {
    for (var i = 2; i < value; i++)
      if (value % i == 0) return false;
    return true;
  }
  
  new Test.Unit.Runner({    
    testEachBreak: function() {
      var result = 0;
      Fixtures.Basic.each(function(value) {
        if ((result = value) == 2) throw $break;
      });
      
      this.assertEqual(2, result);
    },
    
    testEachReturnActsAsContinue: function() {
      var results = [];
      Fixtures.Basic.each(function(value) {
        if (value == 2) return;
        results.push(value);
      });
      
      this.assertEqual('1, 3', results.join(', '));
    },
    
    "test #each passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.each(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
      }, this);
    },
    
    testEachChaining: function() {
      this.assertEqual(Fixtures.Primes, Fixtures.Primes.each(Prototype.emptyFunction));
      this.assertEqual(3, Fixtures.Basic.each(Prototype.emptyFunction).length);
    },
  
    testEnumContext: function() {
      var results = [];
      Fixtures.Basic.each(function(value) {
        results.push(value * this.i);
      }, { i: 2 });
      
      this.assertEqual('2 4 6', results.join(' '));
  
      this.assert(Fixtures.Basic.all(function(value){
        return value >= this.min && value <= this.max;
      }, { min: 1, max: 3 }));
      this.assert(!Fixtures.Basic.all(function(value){
        return value >= this.min && value <= this.max;
      }));
      this.assert(Fixtures.Basic.any(function(value){
        return value == this.target_value;
      }, { target_value: 2 }));
    },
  
    testAny: function() {
      this.assert(!([].any()));
      
      this.assert([true, true, true].any());
      this.assert([true, false, false].any());
      this.assert(![false, false, false].any());
      
      this.assert(Fixtures.Basic.any(function(value) {
        return value > 2;
      }));
      this.assert(!Fixtures.Basic.any(function(value) {
        return value > 5;
      }));
    },
    
    "test #any passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.any(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        
        // Iterate over all values
        return value > 5;
      }, this);
    },
    
    testAll: function() {
      this.assert([].all());
      
      this.assert([true, true, true].all());
      this.assert(![true, false, false].all());
      this.assert(![false, false, false].all());
  
      this.assert(Fixtures.Basic.all(function(value) {
        return value > 0;
      }));
      this.assert(!Fixtures.Basic.all(function(value) {
        return value > 1;
      }));
    },
    
    "test #all passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.all(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        
        // Iterate over all values
        return value > 0;
      }, this);
    },
    
    testCollect: function() {
      this.assertEqual(Fixtures.Nicknames.join(', '), 
        Fixtures.People.collect(function(person) {
          return person.nickname;
        }).join(", "));
      
      this.assertEqual(26,  Fixtures.Primes.map().length);
    },
    
    "test #collect passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.collect(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value;
      }, this);
    },
    
    testDetect: function() {
      this.assertEqual('Marcel Molina Jr.', 
        Fixtures.People.detect(function(person) {
          return person.nickname.match(/no/);
        }).name);
    },
    
    "test #detect passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.detect(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        
        // Iterate over all values
        return value > 5;
      }, this);
    },
    
    testEachSlice: function() {
      this.assertEnumEqual([], [].eachSlice(2));
      this.assertEqual(1, [1].eachSlice(1).length);
      this.assertEnumEqual([1], [1].eachSlice(1)[0]);
      this.assertEqual(2, Fixtures.Basic.eachSlice(2).length);
      this.assertEnumEqual(
        [3, 2, 1, 11, 7, 5, 19, 17, 13, 31, 29, 23, 43, 41, 37, 59, 53, 47, 71, 67, 61, 83, 79, 73, 97, 89],
        Fixtures.Primes.eachSlice( 3, function(slice){ return slice.reverse() }).flatten()
      );
      this.assertEnumEqual(Fixtures.Basic, Fixtures.Basic.eachSlice(-10));
      this.assertEnumEqual(Fixtures.Basic, Fixtures.Basic.eachSlice(0));
      this.assertNotIdentical(Fixtures.Basic, Fixtures.Basic.eachSlice(0));
    },
    
    testEachWithIndex: function() {
      var nicknames = [], indexes = [];
      Fixtures.People.each(function(person, index) {
        nicknames.push(person.nickname);
        indexes.push(index);
      });
      
      this.assertEqual(Fixtures.Nicknames.join(', '), 
        nicknames.join(', '));
      this.assertEqual('0, 1, 2, 3', indexes.join(', '));
    },
    
    testFindAll: function() {
      this.assertEqual(Fixtures.Primes.join(', '),
        Fixtures.Z.findAll(prime).join(', '));
    },
    
    "test #findAll passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.findAll(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value > 5;
      }, this);
    },
    
    testGrep: function() {
      this.assertEqual('noradio, htonl', 
        Fixtures.Nicknames.grep(/o/).join(", "));
        
      this.assertEqual('NORADIO, HTONL', 
        Fixtures.Nicknames.grep(/o/, function(nickname) {
          return nickname.toUpperCase();
        }).join(", "))
  
      this.assertEnumEqual($('grepHeader', 'grepCell'),
        $('grepTable', 'grepTBody', 'grepRow', 'grepHeader', 'grepCell').grep(new Selector('.cell')));
  
      // troublesome characters
      this.assertEnumEqual(['?a', 'c?'], ['?a','b','c?'].grep('?'));
      this.assertEnumEqual(['*a', 'c*'], ['*a','b','c*'].grep('*'));
      this.assertEnumEqual(['+a', 'c+'], ['+a','b','c+'].grep('+'));
      this.assertEnumEqual(['{1}a', 'c{1}'], ['{1}a','b','c{1}'].grep('{1}'));
      this.assertEnumEqual(['(a', 'c('], ['(a','b','c('].grep('('));
      this.assertEnumEqual(['|a', 'c|'], ['|a','b','c|'].grep('|'));
    },
    
    "test #grep passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.grep(/\d/, function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value;
      }, this);
    },
    
    testInclude: function() {
      this.assert(Fixtures.Nicknames.include('sam-'));
      this.assert(Fixtures.Nicknames.include('noradio'));
      this.assert(!Fixtures.Nicknames.include('gmosx'));
      this.assert(Fixtures.Basic.include(2));
      this.assert(Fixtures.Basic.include('2'));
      this.assert(!Fixtures.Basic.include('4'));
    },
    
    testInGroupsOf: function() {
      this.assertEnumEqual([], [].inGroupsOf(3));
      
      var arr = [1, 2, 3, 4, 5, 6].inGroupsOf(3);
      this.assertEqual(2, arr.length);
      this.assertEnumEqual([1, 2, 3], arr[0]);
      this.assertEnumEqual([4, 5, 6], arr[1]);
      
      arr = [1, 2, 3, 4, 5, 6].inGroupsOf(4);
      this.assertEqual(2, arr.length);
      this.assertEnumEqual([1, 2, 3, 4], arr[0]);
      this.assertEnumEqual([5, 6, null, null], arr[1]);
      
      var basic = Fixtures.Basic
      
      arr = basic.inGroupsOf(4,'x');
      this.assertEqual(1, arr.length);
      this.assertEnumEqual([1, 2, 3, 'x'], arr[0]);
      
      this.assertEnumEqual([1,2,3,'a'], basic.inGroupsOf(2, 'a').flatten());
  
      arr = basic.inGroupsOf(5, '');
      this.assertEqual(1, arr.length);
      this.assertEnumEqual([1, 2, 3, '', ''], arr[0]);
  
      this.assertEnumEqual([1,2,3,0], basic.inGroupsOf(2, 0).flatten());
      this.assertEnumEqual([1,2,3,false], basic.inGroupsOf(2, false).flatten());
    },
    
    testInject: function() {
      this.assertEqual(1061, 
        Fixtures.Primes.inject(0, function(sum, value) {
          return sum + value;
        }));
    },
    
    "test #inject passes memo, value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.inject(0, function(memo, value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
  
        return memo + value;
      }, this);
    },
    
    testInvoke: function() {
      var result = [[2, 1, 3], [6, 5, 4]].invoke('sort');
      this.assertEqual(2, result.length);
      this.assertEqual('1, 2, 3', result[0].join(', '));
      this.assertEqual('4, 5, 6', result[1].join(', '));
      
      result = result.invoke('invoke', 'toString', 2);
      this.assertEqual('1, 10, 11', result[0].join(', '));
      this.assertEqual('100, 101, 110', result[1].join(', '));
    },
    
    testMax: function() {
      this.assertEqual(100, Fixtures.Z.max());
      this.assertEqual(97, Fixtures.Primes.max());
      this.assertEqual(2, [ -9, -8, -7, -6, -4, -3, -2,  0, -1,  2 ].max());
      this.assertEqual('sam-', Fixtures.Nicknames.max()); // ?s > ?U
    },
    
    "test #max passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.max(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value;
      }, this);
    },
    
    testMin: function() {
      this.assertEqual(1, Fixtures.Z.min());
      this.assertEqual(0, [  1, 2, 3, 4, 5, 6, 7, 8, 0, 9 ].min());
      this.assertEqual('Ulysses', Fixtures.Nicknames.min()); // ?U < ?h
    },
    
    "test #min passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.min(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value;
      }, this);
    },
    
    testPartition: function() {
      var result = Fixtures.People.partition(function(person) {
        return person.name.length < 15;
      }).invoke('pluck', 'nickname');
      
      this.assertEqual(2, result.length);
      this.assertEqual('sam-, htonl', result[0].join(', '));
      this.assertEqual('noradio, Ulysses', result[1].join(', '));
    },
    
    "test #partition passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.partition(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value < 2;
      }, this);
    },
    
    testPluck: function() {
      this.assertEqual(Fixtures.Nicknames.join(', '),
        Fixtures.People.pluck('nickname').join(', '));
    },
    
    testReject: function() {
      this.assertEqual(0, 
        Fixtures.Nicknames.reject(Prototype.K).length);
        
      this.assertEqual('sam-, noradio, htonl',
        Fixtures.Nicknames.reject(function(nickname) {
          return nickname != nickname.toLowerCase();
        }).join(', '));
    },
    
    "test #reject passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.reject(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value < 2;
      }, this);
    },
    
    testSortBy: function() {
      this.assertEqual('htonl, noradio, sam-, Ulysses',
        Fixtures.People.sortBy(function(value) {
          return value.nickname.toLowerCase();
        }).pluck('nickname').join(', '));
    },
    
    "test #sortBy passes value, index and collection to the iterator": function() {
      var i = 0;
      Fixtures.Basic.sortBy(function(value, index, collection) {
        this.assertIdentical(Fixtures.Basic[i], value);
        this.assertIdentical(i, index);
        this.assertIdentical(Fixtures.Basic, collection);
        i++;
        return value;
      }, this);
    },
    
    testToArray: function() {
      var result = Fixtures.People.toArray();
      this.assert(result != Fixtures.People); // they're different objects...
      this.assertEqual(Fixtures.Nicknames.join(', '),
        result.pluck('nickname').join(', ')); // but the values are the same
    },
    
    testZip: function() {
      var result = [1, 2, 3].zip([4, 5, 6], [7, 8, 9]);
      this.assertEqual('[[1, 4, 7], [2, 5, 8], [3, 6, 9]]', result.inspect());
      
      result = [1, 2, 3].zip([4, 5, 6], [7, 8, 9], function(array) { return array.reverse() });
      this.assertEqual('[[7, 4, 1], [8, 5, 2], [9, 6, 3]]', result.inspect());
    },
    
    testSize: function() {
      this.assertEqual(4, Fixtures.People.size());
      this.assertEqual(4, Fixtures.Nicknames.size());
      this.assertEqual(26, Fixtures.Primes.size());
      this.assertEqual(0, [].size());
    }
  });