Files
lodash/test/pad-methods.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

52 lines
1.8 KiB
JavaScript

import assert from 'assert';
import lodashStable from 'lodash';
import { _ } from './utils.js';
import pad from '../pad.js';
describe('pad methods', function() {
lodashStable.each(['pad', 'padStart', 'padEnd'], function(methodName) {
var func = _[methodName],
isPad = methodName == 'pad',
isStart = methodName == 'padStart',
string = 'abc';
it('`_.' + methodName + '` should not pad if string is >= `length`', function() {
assert.strictEqual(func(string, 2), string);
assert.strictEqual(func(string, 3), string);
});
it('`_.' + methodName + '` should treat negative `length` as `0`', function() {
lodashStable.each([0, -2], function(length) {
assert.strictEqual(func(string, length), string);
});
});
it('`_.' + methodName + '` should coerce `length` to a number', function() {
lodashStable.each(['', '4'], function(length) {
var actual = length ? (isStart ? ' abc' : 'abc ') : string;
assert.strictEqual(func(string, length), actual);
});
});
it('`_.' + methodName + '` should treat nullish values as empty strings', function() {
lodashStable.each([undefined, '_-'], function(chars) {
var expected = chars ? (isPad ? '__' : chars) : ' ';
assert.strictEqual(func(null, 2, chars), expected);
assert.strictEqual(func(undefined, 2, chars), expected);
assert.strictEqual(func('', 2, chars), expected);
});
});
it('`_.' + methodName + '` should return `string` when `chars` coerces to an empty string', function() {
var values = ['', Object('')],
expected = lodashStable.map(values, lodashStable.constant(string));
var actual = lodashStable.map(values, function(value) {
return pad(string, 6, value);
});
assert.deepStrictEqual(actual, expected);
});
});
});