prototype/test/unit/enumerable.html

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<h1>Prototype Unit test file</h1>
<p>
Test of utility functions in enumerable.js
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<!-- Tests follow -->
<script type="text/javascript" language="javascript" charset="utf-8">
// <![CDATA[
var Fixtures = {
People: [
{name: 'Sam Stephenson', nickname: 'sam-'},
{name: 'Marcel Molina Jr.', nickname: 'noradio'},
{name: 'Scott Barron', nickname: 'htonl'},
{name: 'Nicholas Seckar', nickname: 'Ulysses'}
],
Nicknames: $w('sam- noradio htonl Ulysses'),
Primes: [
1, 2, 3, 5, 7, 11, 13, 17, 19, 23,
29, 31, 37, 41, 43, 47, 53, 59, 61, 67,
71, 73, 79, 83, 89, 97
],
Z: []
};
for (var i = 1; i <= 100; i++)
Fixtures.Z.push(i);
function prime(value) {
for (var i = 2; i < value; i++)
if (value % i == 0) return false;
return true;
}
new Test.Unit.Runner({
testEachBreak: function() {with(this) {
var result = 0;
[1, 2, 3].each(function(value) {
if ((result = value) == 2) throw $break;
});
assertEqual(2, result);
}},
testEachContinue: function() {with(this) {
var results = [];
[1, 2, 3].each(function(value) {
if (value == 2) throw $continue;
results.push(value);
});
assertEqual('1, 3', results.join(', '));
}},
testEachChaining: function() {with(this) {
assertEqual(Fixtures.Primes, Fixtures.Primes.each(Prototype.emptyFunction));
assertEqual(3, [1, 2, 3].each(Prototype.emptyFunction).length);
}},
testAny: function() {with(this) {
assert(!([].any()));
assert([true, true, true].any());
assert([true, false, false].any());
assert(![false, false, false].any());
assert([1, 2, 3, 4, 5].any(function(value) {
return value > 3;
}));
assert(![1, 2, 3, 4, 5].any(function(value) {
return value > 10;
}));
}},
testAll: function() {with(this) {
assert([].all());
assert([true, true, true].all());
assert(![true, false, false].all());
assert(![false, false, false].all());
assert([1, 2, 3, 4, 5].all(function(value) {
return value > 0;
}));
assert(![1, 2, 3, 4, 5].all(function(value) {
return value > 3;
}));
}},
testCollect: function() {with(this) {
assertEqual(Fixtures.Nicknames.join(', '),
Fixtures.People.collect(function(person) {
return person.nickname;
}).join(", "));
assertEqual(26, Fixtures.Primes.map().length);
}},
testDetect: function() {with(this) {
assertEqual('Marcel Molina Jr.',
Fixtures.People.detect(function(person) {
return person.nickname.match(/no/);
}).name);
}},
testEachSlice: function() {with(this) {
assertEnumEqual([], [].eachSlice(2));
assertEqual(1, [1].eachSlice(1).length);
assertEnumEqual([1], [1].eachSlice(1)[0]);
assertEqual(2, [1,2,3].eachSlice(2).length);
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()
);
}},
testEachWithIndex: function() {with(this) {
var nicknames = [], indexes = [];
Fixtures.People.each(function(person, index) {
nicknames.push(person.nickname);
indexes.push(index);
});
assertEqual(Fixtures.Nicknames.join(', '),
nicknames.join(', '));
assertEqual('0, 1, 2, 3', indexes.join(', '));
}},
testFindAll: function() {with(this) {
assertEqual(Fixtures.Primes.join(', '),
Fixtures.Z.findAll(prime).join(', '));
}},
testGrep: function() {with(this) {
assertEqual('noradio, htonl',
Fixtures.Nicknames.grep(/o/).join(", "));
assertEqual('NORADIO, HTONL',
Fixtures.Nicknames.grep(/o/, function(nickname) {
return nickname.toUpperCase();
}).join(", "))
}},
testInclude: function() {with(this) {
assert(Fixtures.Nicknames.include('sam-'));
assert(Fixtures.Nicknames.include('noradio'));
assert(Fixtures.Nicknames.include('htonl'));
assert(Fixtures.Nicknames.include('Ulysses'));
assert(!Fixtures.Nicknames.include('gmosx'));
}},
testInGroupsOf: function() { with(this) {
assertEnumEqual([], [].inGroupsOf(3));
var arr = [1, 2, 3, 4, 5, 6].inGroupsOf(3);
assertEqual(2, arr.length);
assertEnumEqual([1, 2, 3], arr[0]);
assertEnumEqual([4, 5, 6], arr[1]);
arr = [1, 2, 3, 4, 5, 6].inGroupsOf(4);
assertEqual(2, arr.length);
assertEnumEqual([1, 2, 3, 4], arr[0]);
assertEnumEqual([5, 6, null, null], arr[1]);
arr = [1, 2, 3].inGroupsOf(4,'x');
assertEqual(1, arr.length);
assertEnumEqual([1, 2, 3, 'x'], arr[0]);
assertEnumEqual([1,2,3,'a'], [1,2,3].inGroupsOf(2, 'a').flatten());
arr = [1, 2, 3].inGroupsOf(5, '');
assertEqual(1, arr.length);
assertEnumEqual([1, 2, 3, '', ''], arr[0]);
assertEnumEqual([1,2,3,0], [1,2,3].inGroupsOf(2, 0).flatten());
assertEnumEqual([1,2,3,false], [1,2,3].inGroupsOf(2, false).flatten());
}},
testInject: function() {with(this) {
assertEqual(1061,
Fixtures.Primes.inject(0, function(sum, value) {
return sum + value;
}));
}},
testInvoke: function() {with(this) {
var result = [[2, 1, 3], [6, 5, 4]].invoke('sort');
assertEqual(2, result.length);
assertEqual('1, 2, 3', result[0].join(', '));
assertEqual('4, 5, 6', result[1].join(', '));
result = result.invoke('invoke', 'toString', 2);
assertEqual('1, 10, 11', result[0].join(', '));
assertEqual('100, 101, 110', result[1].join(', '));
}},
testMax: function() {with(this) {
assertEqual(100, Fixtures.Z.max());
assertEqual(97, Fixtures.Primes.max());
assertEqual(2, [ -9, -8, -7, -6, -4, -3, -2, 0, -1, 2 ].max());
assertEqual('sam-', Fixtures.Nicknames.max()); // ?s > ?U
}},
testMin: function() {with(this) {
assertEqual(1, Fixtures.Z.min());
assertEqual(0, [ 1, 2, 3, 4, 5, 6, 7, 8, 0, 9 ].min());
assertEqual('Ulysses', Fixtures.Nicknames.min()); // ?U < ?h
}},
testPartition: function() {with(this) {
var result = Fixtures.People.partition(function(person) {
return person.name.length < 15;
}).invoke('pluck', 'nickname');
assertEqual(2, result.length);
assertEqual('sam-, htonl', result[0].join(', '));
assertEqual('noradio, Ulysses', result[1].join(', '));
}},
testPluck: function() {with(this) {
assertEqual(Fixtures.Nicknames.join(', '),
Fixtures.People.pluck('nickname').join(', '));
}},
testReject: function() {with(this) {
assertEqual(0,
Fixtures.Nicknames.reject(Prototype.K).length);
assertEqual('sam-, noradio, htonl',
Fixtures.Nicknames.reject(function(nickname) {
return nickname != nickname.toLowerCase();
}).join(', '));
}},
testSortBy: function() {with(this) {
assertEqual('htonl, noradio, sam-, Ulysses',
Fixtures.People.sortBy(function(value) {
return value.nickname.toLowerCase();
}).pluck('nickname').join(', '));
}},
testToArray: function() {with(this) {
var result = Fixtures.People.toArray();
assert(result != Fixtures.People); // they're different objects...
assertEqual(Fixtures.Nicknames.join(', '),
result.pluck('nickname').join(', ')); // but the values are the same
}},
testZip: function() {with(this) {
var result = [1, 2, 3].zip([4, 5, 6], [7, 8, 9]);
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() });
assertEqual('[[7, 4, 1], [8, 5, 2], [9, 6, 3]]', result.inspect());
}},
testSize: function() {with(this) {
assertEqual(4, Fixtures.People.size());
assertEqual(4, Fixtures.Nicknames.size());
assertEqual(26, Fixtures.Primes.size());
assertEqual(0, [].size());
}}
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