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Add _.sumBy.

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jdalton
2015-07-05 23:18:10 -07:00
committed by John-David Dalton
parent 83ac168664
commit 340a6d195f
2 changed files with 53 additions and 97 deletions
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44
test/test.js
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@@ -14550,9 +14550,7 @@
QUnit.module('lodash.sum');
(function() {
var array = [6, 4, 2],
object = { 'a': 2, 'b': 3, 'c': 1 },
objects = [{ 'a': 2 }, { 'a': 3 }, { 'a': 1 }];
var array = [6, 4, 2];
test('should return the sum of an array of numbers', 1, function() {
strictEqual(_.sum(array), 12);
@@ -14571,51 +14569,43 @@
test('should coerce values to numbers and `NaN` to `0`', 1, function() {
strictEqual(_.sum(['1', NaN, '2']), 3);
});
}());
test('should iterate an object', 1, function() {
strictEqual(_.sum(object), 6);
});
/*--------------------------------------------------------------------------*/
test('should iterate a string', 2, function() {
_.each(['123', Object('123')], function(value) {
strictEqual(_.sum(value), 6);
});
});
QUnit.module('lodash.sumBy');
(function() {
var array = [6, 4, 2],
objects = [{ 'a': 2 }, { 'a': 3 }, { 'a': 1 }];
test('should work with an `iteratee` argument', 1, function() {
var actual = _.sum(objects, function(object) {
var actual = _.sumBy(objects, function(object) {
return object.a;
});
deepEqual(actual, 6);
});
test('should provide the correct `iteratee` arguments', 2, function() {
test('should provide the correct `iteratee` arguments', 1, function() {
var args;
_.sum(array, function() {
_.sumBy(array, function() {
args || (args = slice.call(arguments));
});
deepEqual(args, [6, 0, array]);
args = null;
_.sum(object, function() {
args || (args = slice.call(arguments));
});
deepEqual(args, [2, 'a', object]);
deepEqual(args, [6]);
});
test('should work with a "_.property" style `iteratee`', 2, function() {
var arrays = [[2], [3], [1]];
strictEqual(_.sum(arrays, 0), 6);
strictEqual(_.sum(objects, 'a'), 6);
strictEqual(_.sumBy(arrays, 0), 6);
strictEqual(_.sumBy(objects, 'a'), 6);
});
test('should perform basic sum when used as an iteratee for methods like `_.map`', 1, function() {
var actual = _.map([array, object], _.sum);
deepEqual(actual, [12, 6]);
var actual = _.map([array, array], _.sumBy);
deepEqual(actual, [12, 12]);
});
}());
@@ -17538,7 +17528,7 @@
var acceptFalsey = _.difference(allMethods, rejectFalsey);
test('should accept falsey arguments', 208, function() {
test('should accept falsey arguments', 209, function() {
var emptyArrays = _.map(falsey, _.constant([]));
_.each(acceptFalsey, function(methodName) {