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* 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.
51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { falsey, stubArray } from './utils.js';
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import chunk from '../chunk.js';
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describe('chunk', function() {
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var array = [0, 1, 2, 3, 4, 5];
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it('should return chunked arrays', function() {
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var actual = chunk(array, 3);
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assert.deepStrictEqual(actual, [[0, 1, 2], [3, 4, 5]]);
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});
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it('should return the last chunk as remaining elements', function() {
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var actual = chunk(array, 4);
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assert.deepStrictEqual(actual, [[0, 1, 2, 3], [4, 5]]);
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});
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it('should treat falsey `size` values, except `undefined`, as `0`', function() {
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var expected = lodashStable.map(falsey, function(value) {
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return value === undefined ? [[0], [1], [2], [3], [4], [5]] : [];
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});
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var actual = lodashStable.map(falsey, function(size, index) {
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return index ? chunk(array, size) : chunk(array);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should ensure the minimum `size` is `0`', function() {
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var values = lodashStable.reject(falsey, lodashStable.isUndefined).concat(-1, -Infinity),
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expected = lodashStable.map(values, stubArray);
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var actual = lodashStable.map(values, function(n) {
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return chunk(array, n);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should coerce `size` to an integer', function() {
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assert.deepStrictEqual(chunk(array, array.length / 4), [[0], [1], [2], [3], [4], [5]]);
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});
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it('should work as an iteratee for methods like `_.map`', function() {
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var actual = lodashStable.map([[1, 2], [3, 4]], chunk);
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assert.deepStrictEqual(actual, [[[1], [2]], [[3], [4]]]);
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});
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});
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