Files
lodash/test/meanBy.js
Benjamin Tan d5ef31929a Add initial test files from lodash v4. (#4172)
* Install test dependencies.

* Add initial test files.

These files were created using a simplistic AST manipulator using `recast` to
preserve formatting. There's bound to be a huge chunk of errors, but this serves
as a good start. QUnit was replaced with Mocha, with ES2015 imports running via
`esm`.

As far as possible, QUnit-specific syntax has been replaced with Mocha's
`describe` and `it`, while the native Node.js `assert` module is used for
assertions. Files in the `test` directory ending in `.test.js` will be treated
as test files.

* Add initial passing files to test run.
2019-02-12 09:11:32 -08:00

32 lines
794 B
JavaScript

import assert from 'assert';
import { slice } from './utils.js';
import meanBy from '../meanBy.js';
describe('meanBy', function() {
var objects = [{ 'a': 2 }, { 'a': 3 }, { 'a': 1 }];
it('should work with an `iteratee`', function() {
var actual = meanBy(objects, function(object) {
return object.a;
});
assert.deepStrictEqual(actual, 2);
});
it('should provide correct `iteratee` arguments', function() {
var args;
meanBy(objects, function() {
args || (args = slice.call(arguments));
});
assert.deepStrictEqual(args, [{ 'a': 2 }]);
});
it('should work with `_.property` shorthands', function() {
var arrays = [[2], [3], [1]];
assert.strictEqual(meanBy(arrays, 0), 2);
assert.strictEqual(meanBy(objects, 'a'), 2);
});
});