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if (typeof(dojo) != 'undefined') { dojo.require('MochiKit.Iter'); }
if (typeof(JSAN) != 'undefined') { JSAN.use('MochiKit.Iter'); }
if (typeof(tests) == 'undefined') { tests = {}; }
tests.test_Iter = function (t) {
t.is( sum([1, 2, 3, 4, 5]), 15, "sum works on Arrays" );
t.is( compare(list([1, 2, 3]), [1, 2, 3]), 0, "list([x]) == [x]" );
t.is( compare(list(range(6, 0, -1)), [6, 5, 4, 3, 2, 1]), 0, "list(range(6, 0, -1)");
t.is( compare(list(range(6)), [0, 1, 2, 3, 4, 5]), 0, "list(range(6))" );
var moreThanTwo = partial(operator.lt, 2);
t.is( sum(ifilter(moreThanTwo, range(6))), 12, "sum(ifilter(, range()))" );
t.is( sum(ifilterfalse(moreThanTwo, range(6))), 3, "sum(ifilterfalse(, range()))" );
var c = count(10);
t.is( compare([c.next(), c.next(), c.next()], [10, 11, 12]), 0, "count()" );
c = cycle([1, 2]);
t.is( compare([c.next(), c.next(), c.next()], [1, 2, 1]), 0, "cycle()" );
c = repeat("foo", 3);
t.is( compare(list(c), ["foo", "foo", "foo"]), 0, "repeat()" );
c = izip([1, 2], [3, 4, 5], repeat("foo"));
t.is( compare(list(c), [[1, 3, "foo"], [2, 4, "foo"]]), 0, "izip()" );
t.is( compare(list(range(5)), [0, 1, 2, 3, 4]), 0, "range(x)" );
c = islice(range(10), 0, 10, 2);
t.is( compare(list(c), [0, 2, 4, 6, 8]), 0, "islice(x, y, z)" );
c = imap(operator.add, [1, 2, 3], [2, 4, 6]);
t.is( compare(list(c), [3, 6, 9]), 0, "imap(fn, p, q)" );
c = filter(partial(operator.lt, 1), iter([1, 2, 3]));
t.is( compare(c, [2, 3]), 0, "filter(fn, iterable)" );
c = map(partial(operator.add, -1), iter([1, 2, 3]));
t.is( compare(c, [0, 1, 2]), 0, "map(fn, iterable)" );
c = map(operator.add, iter([1, 2, 3]), [2, 4, 6]);
t.is( compare(c, [3, 6, 9]), 0, "map(fn, iterable, q)" );
c = map(operator.add, iter([1, 2, 3]), iter([2, 4, 6]));
t.is( compare(c, [3, 6, 9]), 0, "map(fn, iterable, iterable)" );
c = applymap(operator.add, [[1, 2], [2, 4], [3, 6]]);
t.is( compare(list(c), [3, 6, 9]), 0, "applymap()" );
c = applymap(function (a) { return [this, a]; }, [[1], [2]], 1);
t.is( compare(list(c), [[1, 1], [1, 2]]), 0, "applymap(self)" );
c = chain(range(2), range(3));
t.is( compare(list(c), [0, 1, 0, 1, 2]), 0, "chain(p, q)" );
var lessThanFive = partial(operator.gt, 5);
c = takewhile(lessThanFive, count());
t.is( compare(list(c), [0, 1, 2, 3, 4]), 0, "takewhile()" );
c = dropwhile(lessThanFive, range(10));
t.is( compare(list(c), [5, 6, 7, 8, 9]), 0, "dropwhile()" );
c = tee(range(5), 3);
t.is( compare(list(c[0]), list(c[1])), 0, "tee(..., 3) p0 == p1" );
t.is( compare(list(c[2]), [0, 1, 2, 3, 4]), 0, "tee(..., 3) p2 == fixed" );
t.is( compare(reduce(operator.add, range(10)), 45), 0, "reduce(op.add)" );
try {
reduce(operator.add, []);
t.ok( false, "reduce didn't raise anything with empty list and no start?!" );
} catch (e) {
if (e instanceof TypeError) {
t.ok( true, "reduce raised TypeError correctly" );
} else {
t.ok( false, "reduce raised the wrong exception?" );
}
}
t.is( reduce(operator.add, [], 10), 10, "range initial value OK empty" );
t.is( reduce(operator.add, [1], 10), 11, "range initial value OK populated" );
t.is( compare(iextend([1], range(2)), [1, 0, 1]), 0, "iextend(...)" );
var rval = [];
var o = [0, 1, 2, 3];
o.next = range(2).next;
t.is( iextend([], o).length, 2, "iextend handles array-like iterables" );
var x = [];
exhaust(imap(bind(x.push, x), range(5)));
t.is( compare(x, [0, 1, 2, 3, 4]), 0, "exhaust(...)" );
t.is( every([1, 2, 3, 4, 5, 4], lessThanFive), false, "every false" );
t.is( every([1, 2, 3, 4, 4], lessThanFive), true, "every true" );
t.is( some([1, 2, 3, 4, 4], lessThanFive), true, "some true" );
t.is( some([5, 6, 7, 8, 9], lessThanFive), false, "some false" );
t.is( some([5, 6, 7, 8, 4], lessThanFive), true, "some true" );
var rval = [];
forEach(range(2), rval.push, rval);
t.is( compare(rval, [0, 1]), 0, "forEach works bound" );
function foo(o) {
rval.push(o);
}
forEach(range(2), foo);
t.is( compare(rval, [0, 1, 0, 1]), 0, "forEach works unbound" );
var rval = [];
var o = [0, 1, 2, 3];
o.next = range(2).next;
forEach(o, rval.push, rval);
t.is( rval.length, 2, "forEach handles array-like iterables" );
t.is( compare(sorted([3, 2, 1]), [1, 2, 3]), 0, "sorted default" );
rval = sorted(["aaa", "bb", "c"], keyComparator("length"));
t.is(compare(rval, ["c", "bb", "aaa"]), 0, "sorted custom");
t.is( compare(reversed(range(4)), [3, 2, 1, 0]), 0, "reversed iterator" );
t.is( compare(reversed([5, 6, 7]), [7, 6, 5]), 0, "reversed list" );
var o = {lst: [1, 2, 3], iterateNext: function () { return this.lst.shift(); }};
t.is( compare(list(o), [1, 2, 3]), 0, "iterateNext" );
function except(exc, func) {
try {
func();
t.ok(false, exc.name + " was not raised.");
} catch (e) {
if (e == exc) {
t.ok( true, "raised " + exc.name + " correctly" );
} else {
t.ok( false, "raised the wrong exception?" );
}
}
}
odd = partial(operator.and, 1)
// empty
grouped = groupby([]);
except(StopIteration, grouped.next);
// exhaust sub-iterator
grouped = groupby([2,4,6,7], odd);
kv = grouped.next(); k = kv[0], subiter = kv[1];
t.is(k, 0, "odd(2) = odd(4) = odd(6) == 0");
t.is(subiter.next(), 2, "sub-iterator.next() == 2");
t.is(subiter.next(), 4, "sub-iterator.next() == 4");
t.is(subiter.next(), 6, "sub-iterator.next() == 6");
except(StopIteration, subiter.next);
kv = grouped.next(); key = kv[0], subiter = kv[1];
t.is(key, 1, "odd(7) == 1");
t.is(subiter.next(), 7, "sub-iterator.next() == 7");
except(StopIteration, subiter.next);
// not consume sub-iterator
grouped = groupby([2,4,6,7], odd);
kv = grouped.next(); key = kv[0], subiter = kv[1];
t.is(key, 0, "0 = odd(2) = odd(4) = odd(6)");
kv = grouped.next(); key = kv[0], subiter = kv[1];
t.is(key, 1, "1 = odd(7)");
except(StopIteration, grouped.next);
// consume sub-iterator partially
grouped = groupby([3,1,1,2], odd);
kv = grouped.next(); key = kv[0], subiter = kv[1];
t.is(key, 1, "odd(1) == 1");
t.is(subiter.next(), 3, "sub-iterator.next() == 3");
kv = grouped.next(); key = kv[0], v = kv[1];
t.is(key, 0, "skip (1,1), odd(2) == 0");
except(StopIteration, grouped.next);
// null
grouped = groupby([null,null]);
kv = grouped.next(); k = kv[0], v = kv[1];
t.is(k, null, "null ok");
// groupby - array version
isEqual = (t.isDeeply || function (a, b, msg) {
return t.ok(compare(a, b) == 0, msg);
});
isEqual(groupby_as_array([ ] ), [ ], "empty");
isEqual(groupby_as_array([1,1,1]), [ [1,[1,1,1]] ], "[1,1,1]: [1,1,1]");
isEqual(groupby_as_array([1,2,2]), [ [1,[1] ], [2,[2,2]] ], "[1,2,2]: [1], [2,2]");
isEqual(groupby_as_array([1,1,2]), [ [1,[1,1] ], [2,[2 ]] ], "[1,1,2]: [1,1], [2]");
isEqual(groupby_as_array([null,null] ), [ [null,[null,null]] ], "[null,null]: [null,null]");
grouped = groupby_as_array([1,1,3,2,4,6,8], odd);
isEqual(grouped, [[1, [1,1,3]], [0,[2,4,6,8]]], "[1,1,3,2,4,6,7] odd: [1,1,3], [2,4,6,8]");
};
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