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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.
95 lines
2.9 KiB
JavaScript
95 lines
2.9 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { LARGE_ARRAY_SIZE, identity } from './utils.js';
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import reverse from '../reverse.js';
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import compact from '../compact.js';
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import head from '../head.js';
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describe('reverse', function() {
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var largeArray = lodashStable.range(LARGE_ARRAY_SIZE).concat(null),
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smallArray = [0, 1, 2, null];
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it('should reverse `array`', function() {
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var array = [1, 2, 3],
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actual = reverse(array);
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assert.strictEqual(actual, array);
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assert.deepStrictEqual(array, [3, 2, 1]);
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});
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it('should return the wrapped reversed `array`', function() {
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lodashStable.times(2, function(index) {
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var array = (index ? largeArray : smallArray).slice(),
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clone = array.slice(),
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wrapped = _(array).reverse(),
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actual = wrapped.value();
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assert.ok(wrapped instanceof _);
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assert.strictEqual(actual, array);
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assert.deepStrictEqual(actual, clone.slice().reverse());
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});
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});
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it('should work in a lazy sequence', function() {
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lodashStable.times(2, function(index) {
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var array = (index ? largeArray : smallArray).slice(),
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expected = array.slice(),
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actual = _(array).slice(1).reverse().value();
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assert.deepStrictEqual(actual, expected.slice(1).reverse());
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assert.deepStrictEqual(array, expected);
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});
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});
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it('should be lazy when in a lazy sequence', function() {
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var spy = {
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'toString': function() {
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throw new Error('spy was revealed');
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}
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};
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var array = largeArray.concat(spy),
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expected = array.slice();
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try {
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var wrapped = _(array).slice(1).map(String).reverse(),
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actual = wrapped.last();
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} catch (e) {}
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assert.ok(wrapped instanceof _);
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assert.strictEqual(actual, '1');
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assert.deepEqual(array, expected);
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});
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it('should work in a hybrid sequence', function() {
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lodashStable.times(2, function(index) {
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var clone = (index ? largeArray : smallArray).slice();
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lodashStable.each(['map', 'filter'], function(methodName) {
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var array = clone.slice(),
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expected = clone.slice(1, -1).reverse(),
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actual = _(array)[methodName](identity).thru(compact).reverse().value();
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assert.deepStrictEqual(actual, expected);
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array = clone.slice();
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actual = _(array).thru(compact)[methodName](identity).pull(1).push(3).reverse().value();
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assert.deepStrictEqual(actual, [3].concat(expected.slice(0, -1)));
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});
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});
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});
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it('should track the `__chain__` value of a wrapper', function() {
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lodashStable.times(2, function(index) {
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var array = (index ? largeArray : smallArray).slice(),
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expected = array.slice().reverse(),
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wrapped = _(array).chain().reverse().head();
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assert.ok(wrapped instanceof _);
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assert.strictEqual(wrapped.value(), head(expected));
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assert.deepStrictEqual(array, expected);
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});
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});
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});
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