1 | var test = require('tap').test;
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2 | var traverse = require('../');
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3 |
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4 | test('stop', function (t) {
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5 | var visits = 0;
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6 | traverse('abcdefghij'.split('')).forEach(function (node) {
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7 | if (typeof node === 'string') {
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8 | visits ++;
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9 | if (node === 'e') this.stop()
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10 | }
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11 | });
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12 |
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13 | t.equal(visits, 5);
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14 | t.end();
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15 | });
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16 |
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17 | test('stopMap', function (t) {
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18 | var s = traverse('abcdefghij'.split('')).map(function (node) {
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19 | if (typeof node === 'string') {
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20 | if (node === 'e') this.stop()
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21 | return node.toUpperCase();
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22 | }
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23 | }).join('');
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24 |
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25 | t.equal(s, 'ABCDEfghij');
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26 | t.end();
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27 | });
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28 |
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29 | test('stopReduce', function (t) {
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30 | var obj = {
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31 | a : [ 4, 5 ],
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32 | b : [ 6, [ 7, 8, 9 ] ]
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33 | };
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34 | var xs = traverse(obj).reduce(function (acc, node) {
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35 | if (this.isLeaf) {
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36 | if (node === 7) this.stop();
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37 | else acc.push(node)
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38 | }
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39 | return acc;
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40 | }, []);
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41 |
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42 | t.same(xs, [ 4, 5, 6 ]);
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43 | t.end();
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44 | });
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