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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.
84 lines
3.3 KiB
JavaScript
84 lines
3.3 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { _, whitespace } from './utils.js';
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describe('trim methods', function() {
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lodashStable.each(['trim', 'trimStart', 'trimEnd'], function(methodName, index) {
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var func = _[methodName],
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parts = [];
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if (index != 2) {
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parts.push('leading');
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}
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if (index != 1) {
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parts.push('trailing');
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}
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parts = parts.join(' and ');
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it('`_.' + methodName + '` should remove ' + parts + ' whitespace', function() {
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var string = whitespace + 'a b c' + whitespace,
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expected = (index == 2 ? whitespace : '') + 'a b c' + (index == 1 ? whitespace : '');
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assert.strictEqual(func(string), expected);
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});
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it('`_.' + methodName + '` should coerce `string` to a string', function() {
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var object = { 'toString': lodashStable.constant(whitespace + 'a b c' + whitespace) },
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expected = (index == 2 ? whitespace : '') + 'a b c' + (index == 1 ? whitespace : '');
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assert.strictEqual(func(object), expected);
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});
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it('`_.' + methodName + '` should remove ' + parts + ' `chars`', function() {
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var string = '-_-a-b-c-_-',
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expected = (index == 2 ? '-_-' : '') + 'a-b-c' + (index == 1 ? '-_-' : '');
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assert.strictEqual(func(string, '_-'), expected);
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});
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it('`_.' + methodName + '` should coerce `chars` to a string', function() {
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var object = { 'toString': lodashStable.constant('_-') },
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string = '-_-a-b-c-_-',
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expected = (index == 2 ? '-_-' : '') + 'a-b-c' + (index == 1 ? '-_-' : '');
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assert.strictEqual(func(string, object), expected);
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});
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it('`_.' + methodName + '` should return an empty string for empty values and `chars`', function() {
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lodashStable.each([null, '_-'], function(chars) {
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assert.strictEqual(func(null, chars), '');
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assert.strictEqual(func(undefined, chars), '');
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assert.strictEqual(func('', chars), '');
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});
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});
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it('`_.' + methodName + '` should work with `undefined` or empty string values for `chars`', function() {
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var string = whitespace + 'a b c' + whitespace,
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expected = (index == 2 ? whitespace : '') + 'a b c' + (index == 1 ? whitespace : '');
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assert.strictEqual(func(string, undefined), expected);
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assert.strictEqual(func(string, ''), string);
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});
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it('`_.' + methodName + '` should work as an iteratee for methods like `_.map`', function() {
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var string = Object(whitespace + 'a b c' + whitespace),
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trimmed = (index == 2 ? whitespace : '') + 'a b c' + (index == 1 ? whitespace : ''),
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actual = lodashStable.map([string, string, string], func);
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assert.deepStrictEqual(actual, [trimmed, trimmed, trimmed]);
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});
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it('`_.' + methodName + '` should return an unwrapped value when implicitly chaining', function() {
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var string = whitespace + 'a b c' + whitespace,
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expected = (index == 2 ? whitespace : '') + 'a b c' + (index == 1 ? whitespace : '');
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assert.strictEqual(_(string)[methodName](), expected);
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});
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it('`_.' + methodName + '` should return a wrapped value when explicitly chaining', function() {
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var string = whitespace + 'a b c' + whitespace;
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assert.ok(_(string).chain()[methodName]() instanceof _);
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});
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});
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});
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