| 1 | var vows = require('vows');
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| 2 | var assert = require('assert');
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| 3 | var dedupe = require('../lib/utils').dedupe;
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| 4 | var suite = vows.describe('utils');
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| 5 |
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| 6 | suite.addBatch({
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| 7 | 'when deduping an array of strings': {
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| 8 | topic: function () {
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| 9 | return dedupe(['hello', 'hello', 'world', 'world', 'hello']);
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| 10 | },
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| 11 | 'we get back an array with unique values': function (deduped) {
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| 12 | assert.lengthOf(deduped, 2);
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| 13 | assert.deepEqual(deduped, ['hello', 'world']);
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| 14 | }
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| 15 | },
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| 16 | 'when deduping an empty array': {
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| 17 | topic: function () {
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| 18 | return dedupe([]);
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| 19 | },
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| 20 | 'we get back an empty array': function (deduped) {
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| 21 | assert.lengthOf(deduped, 0);
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| 22 | }
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| 23 | },
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| 24 | 'when deduping an array that contains empty strings': {
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| 25 | topic: function () {
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| 26 | return dedupe(['', 'foo', '', 'foo', 'bar']);
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| 27 | },
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| 28 | 'the empty strings are discarded': function (deduped) {
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| 29 | assert.lengthOf(deduped, 2);
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| 30 | assert.deepEqual(deduped, ['foo', 'bar']);
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| 31 | }
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| 32 | },
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| 33 | 'when deduping an array that contains only empty strings': {
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| 34 | topic: function () {
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| 35 | return dedupe(['', '', '']);
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| 36 | },
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| 37 | 'the empty strings are discarded': function (deduped) {
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| 38 | assert.lengthOf(deduped, 0);
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| 39 | assert.deepEqual(deduped, []);
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| 40 | }
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| 41 | }
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| 42 | });
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| 43 |
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| 44 | suite.export(module);
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