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Fix lazy slice when used after filter. [closes #955]

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jdalton
2015-02-10 21:54:00 -08:00
parent faf67fae03
commit 60c44910df
2 changed files with 24 additions and 21 deletions
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2
lodash.src.js
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@@ -1248,7 +1248,7 @@
end = view.end,
length = end - start,
dropCount = this.__dropCount__,
takeCount = nativeMin(length, this.__takeCount__ - dropCount),
takeCount = nativeMin(length, this.__takeCount__),
index = isRight ? end : start - 1,
iteratees = this.__iteratees__,
iterLength = iteratees ? iteratees.length : 0,

43
test/test.js
View File

@@ -12044,35 +12044,38 @@
notStrictEqual(actual, array);
});
test('should work in a lazy chain sequence', 18, function() {
test('should work in a lazy chain sequence', 38, function() {
if (!isNpm) {
var wrapped = _(array);
deepEqual(wrapped.slice(0, -1).value(), [1, 2]);
deepEqual(wrapped.slice(1).value(), [2, 3]);
deepEqual(wrapped.slice(-1).value(), [3]);
_.each(['map', 'filter'], function(methodName) {
deepEqual(wrapped[methodName]().slice(0, -1).value(), [1, 2]);
deepEqual(wrapped[methodName]().slice(1).value(), [2, 3]);
deepEqual(wrapped[methodName]().slice(1, 3).value(), [2, 3]);
deepEqual(wrapped[methodName]().slice(-1).value(), [3]);
deepEqual(wrapped.slice(4).value(), []);
deepEqual(wrapped.slice(3, 2).value(), []);
deepEqual(wrapped.slice(0, -4).value(), []);
deepEqual(wrapped.slice(0, null).value(), []);
deepEqual(wrapped[methodName]().slice(4).value(), []);
deepEqual(wrapped[methodName]().slice(3, 2).value(), []);
deepEqual(wrapped[methodName]().slice(0, -4).value(), []);
deepEqual(wrapped[methodName]().slice(0, null).value(), []);
deepEqual(wrapped.slice(0, 4).value(), array);
deepEqual(wrapped.slice(-4).value(), array);
deepEqual(wrapped.slice(null).value(), array);
deepEqual(wrapped[methodName]().slice(0, 4).value(), array);
deepEqual(wrapped[methodName]().slice(-4).value(), array);
deepEqual(wrapped[methodName]().slice(null).value(), array);
deepEqual(wrapped.slice(0, 1).value(), [1]);
deepEqual(wrapped.slice(NaN, '1').value(), [1]);
deepEqual(wrapped[methodName]().slice(0, 1).value(), [1]);
deepEqual(wrapped[methodName]().slice(NaN, '1').value(), [1]);
deepEqual(wrapped.slice(0.1, 1.1).value(), [1]);
deepEqual(wrapped.slice('0', 1).value(), [1]);
deepEqual(wrapped.slice(0, '1').value(), [1]);
deepEqual(wrapped.slice('1').value(), [2, 3]);
deepEqual(wrapped.slice(NaN, 1).value(), [1]);
deepEqual(wrapped.slice(1, NaN).value(), []);
deepEqual(wrapped[methodName]().slice(0.1, 1.1).value(), [1]);
deepEqual(wrapped[methodName]().slice('0', 1).value(), [1]);
deepEqual(wrapped[methodName]().slice(0, '1').value(), [1]);
deepEqual(wrapped[methodName]().slice('1').value(), [2, 3]);
deepEqual(wrapped[methodName]().slice(NaN, 1).value(), [1]);
deepEqual(wrapped[methodName]().slice(1, NaN).value(), []);
});
}
else {
skipTest(18);
skipTest(38);
}
});
}());