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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.
65 lines
2.6 KiB
JavaScript
65 lines
2.6 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import truncate from '../truncate.js';
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describe('truncate', function() {
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var string = 'hi-diddly-ho there, neighborino';
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it('should use a default `length` of `30`', function() {
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assert.strictEqual(truncate(string), 'hi-diddly-ho there, neighbo...');
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});
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it('should not truncate if `string` is <= `length`', function() {
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assert.strictEqual(truncate(string, { 'length': string.length }), string);
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assert.strictEqual(truncate(string, { 'length': string.length + 2 }), string);
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});
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it('should truncate string the given length', function() {
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assert.strictEqual(truncate(string, { 'length': 24 }), 'hi-diddly-ho there, n...');
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});
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it('should support a `omission` option', function() {
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assert.strictEqual(truncate(string, { 'omission': ' [...]' }), 'hi-diddly-ho there, neig [...]');
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});
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it('should coerce nullish `omission` values to strings', function() {
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assert.strictEqual(truncate(string, { 'omission': null }), 'hi-diddly-ho there, neighbnull');
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assert.strictEqual(truncate(string, { 'omission': undefined }), 'hi-diddly-ho there, nundefined');
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});
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it('should support a `length` option', function() {
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assert.strictEqual(truncate(string, { 'length': 4 }), 'h...');
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});
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it('should support a `separator` option', function() {
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assert.strictEqual(truncate(string, { 'length': 24, 'separator': ' ' }), 'hi-diddly-ho there,...');
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assert.strictEqual(truncate(string, { 'length': 24, 'separator': /,? +/ }), 'hi-diddly-ho there...');
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assert.strictEqual(truncate(string, { 'length': 24, 'separator': /,? +/g }), 'hi-diddly-ho there...');
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});
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it('should treat negative `length` as `0`', function() {
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lodashStable.each([0, -2], function(length) {
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assert.strictEqual(truncate(string, { 'length': length }), '...');
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});
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});
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it('should coerce `length` to an integer', function() {
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lodashStable.each(['', NaN, 4.6, '4'], function(length, index) {
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var actual = index > 1 ? 'h...' : '...';
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assert.strictEqual(truncate(string, { 'length': { 'valueOf': lodashStable.constant(length) } }), actual);
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});
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});
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it('should coerce `string` to a string', function() {
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assert.strictEqual(truncate(Object(string), { 'length': 4 }), 'h...');
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assert.strictEqual(truncate({ 'toString': lodashStable.constant(string) }, { 'length': 5 }), 'hi...');
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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([string, string, string], truncate),
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truncated = 'hi-diddly-ho there, neighbo...';
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assert.deepStrictEqual(actual, [truncated, truncated, truncated]);
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});
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});
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