| 1 | 'use strict';
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| 2 |
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| 3 | module.exports = function (t, a) {
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| 4 | var x = t(), y, count, count2, count3, count4, test, listener1, listener2;
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| 5 |
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| 6 | x.emit('none');
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| 7 |
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| 8 | test = "Once: ";
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| 9 | count = 0;
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| 10 | x.once('foo', function (a1, a2, a3) {
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| 11 | a(this, x, test + "Context");
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| 12 | a.deep([a1, a2, a3], ['foo', x, 15], test + "Arguments");
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| 13 | ++count;
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| 14 | });
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| 15 |
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| 16 | x.emit('foobar');
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| 17 | a(count, 0, test + "Not invoked on other event");
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| 18 | x.emit('foo', 'foo', x, 15);
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| 19 | a(count, 1, test + "Emitted");
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| 20 | x.emit('foo');
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| 21 | a(count, 1, test + "Emitted once");
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| 22 |
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| 23 | test = "On & Once: ";
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| 24 | count = 0;
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| 25 | x.on('foo', listener1 = function (a1, a2, a3) {
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| 26 | a(this, x, test + "Context");
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| 27 | a.deep([a1, a2, a3], ['foo', x, 15], test + "Arguments");
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| 28 | ++count;
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| 29 | });
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| 30 | count2 = 0;
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| 31 | x.once('foo', listener2 = function (a1, a2, a3) {
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| 32 | a(this, x, test + "Context");
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| 33 | a.deep([a1, a2, a3], ['foo', x, 15], test + "Arguments");
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| 34 | ++count2;
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| 35 | });
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| 36 |
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| 37 | x.emit('foobar');
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| 38 | a(count, 0, test + "Not invoked on other event");
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| 39 | x.emit('foo', 'foo', x, 15);
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| 40 | a(count, 1, test + "Emitted");
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| 41 | x.emit('foo', 'foo', x, 15);
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| 42 | a(count, 2, test + "Emitted twice");
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| 43 | a(count2, 1, test + "Emitted once");
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| 44 | x.off('foo', listener1);
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| 45 | x.emit('foo');
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| 46 | a(count, 2, test + "Not emitter after off");
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| 47 |
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| 48 | count = 0;
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| 49 | x.once('foo', listener1 = function () { ++count; });
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| 50 |
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| 51 | x.off('foo', listener1);
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| 52 | x.emit('foo');
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| 53 | a(count, 0, "Once Off: Not emitted");
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| 54 |
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| 55 | count = 0;
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| 56 | x.on('foo', listener2 = function () {});
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| 57 | x.once('foo', listener1 = function () { ++count; });
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| 58 |
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| 59 | x.off('foo', listener1);
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| 60 | x.emit('foo');
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| 61 | a(count, 0, "Once Off (multi): Not emitted");
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| 62 | x.off('foo', listener2);
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| 63 |
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| 64 | test = "Prototype Share: ";
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| 65 |
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| 66 | y = Object.create(x);
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| 67 |
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| 68 | count = 0;
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| 69 | count2 = 0;
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| 70 | count3 = 0;
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| 71 | count4 = 0;
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| 72 | x.on('foo', function () {
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| 73 | ++count;
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| 74 | });
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| 75 | y.on('foo', function () {
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| 76 | ++count2;
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| 77 | });
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| 78 | x.once('foo', function () {
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| 79 | ++count3;
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| 80 | });
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| 81 | y.once('foo', function () {
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| 82 | ++count4;
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| 83 | });
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| 84 | x.emit('foo');
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| 85 | a(count, 1, test + "x on count");
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| 86 | a(count2, 0, test + "y on count");
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| 87 | a(count3, 1, test + "x once count");
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| 88 | a(count4, 0, test + "y once count");
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| 89 |
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| 90 | y.emit('foo');
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| 91 | a(count, 1, test + "x on count");
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| 92 | a(count2, 1, test + "y on count");
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| 93 | a(count3, 1, test + "x once count");
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| 94 | a(count4, 1, test + "y once count");
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| 95 |
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| 96 | x.emit('foo');
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| 97 | a(count, 2, test + "x on count");
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| 98 | a(count2, 1, test + "y on count");
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| 99 | a(count3, 1, test + "x once count");
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| 100 | a(count4, 1, test + "y once count");
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| 101 |
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| 102 | y.emit('foo');
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| 103 | a(count, 2, test + "x on count");
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| 104 | a(count2, 2, test + "y on count");
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| 105 | a(count3, 1, test + "x once count");
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| 106 | a(count4, 1, test + "y once count");
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| 107 | };
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