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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.
71 lines
2.6 KiB
JavaScript
71 lines
2.6 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { _, args, LARGE_ARRAY_SIZE } from './utils.js';
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describe('xor methods', function() {
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lodashStable.each(['xor', 'xorBy', 'xorWith'], function(methodName) {
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var func = _[methodName];
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it('`_.' + methodName + '` should return the symmetric difference of two arrays', function() {
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var actual = func([2, 1], [2, 3]);
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assert.deepStrictEqual(actual, [1, 3]);
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});
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it('`_.' + methodName + '` should return the symmetric difference of multiple arrays', function() {
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var actual = func([2, 1], [2, 3], [3, 4]);
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assert.deepStrictEqual(actual, [1, 4]);
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actual = func([1, 2], [2, 1], [1, 2]);
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assert.deepStrictEqual(actual, []);
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});
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it('`_.' + methodName + '` should return an empty array when comparing the same array', function() {
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var array = [1],
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actual = func(array, array, array);
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assert.deepStrictEqual(actual, []);
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});
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it('`_.' + methodName + '` should return an array of unique values', function() {
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var actual = func([1, 1, 2, 5], [2, 2, 3, 5], [3, 4, 5, 5]);
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assert.deepStrictEqual(actual, [1, 4]);
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actual = func([1, 1]);
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assert.deepStrictEqual(actual, [1]);
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});
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it('`_.' + methodName + '` should return a new array when a single array is given', function() {
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var array = [1];
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assert.notStrictEqual(func(array), array);
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});
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it('`_.' + methodName + '` should ignore individual secondary arguments', function() {
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var array = [0];
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assert.deepStrictEqual(func(array, 3, null, { '0': 1 }), array);
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});
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it('`_.' + methodName + '` should ignore values that are not arrays or `arguments` objects', function() {
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var array = [1, 2];
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assert.deepStrictEqual(func(array, 3, { '0': 1 }, null), array);
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assert.deepStrictEqual(func(null, array, null, [2, 3]), [1, 3]);
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assert.deepStrictEqual(func(array, null, args, null), [3]);
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});
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it('`_.' + methodName + '` should return a wrapped value when chaining', function() {
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var wrapped = _([1, 2, 3])[methodName]([5, 2, 1, 4]);
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assert.ok(wrapped instanceof _);
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});
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it('`_.' + methodName + '` should work when in a lazy sequence before `head` or `last`', function() {
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var array = lodashStable.range(LARGE_ARRAY_SIZE + 1),
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wrapped = _(array).slice(1)[methodName]([LARGE_ARRAY_SIZE, LARGE_ARRAY_SIZE + 1]);
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var actual = lodashStable.map(['head', 'last'], function(methodName) {
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return wrapped[methodName]();
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});
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assert.deepEqual(actual, [1, LARGE_ARRAY_SIZE + 1]);
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});
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});
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});
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