diff options
Diffstat (limited to 'includes/external/matrix/node_modules/events/tests/prepend.js')
-rw-r--r-- | includes/external/matrix/node_modules/events/tests/prepend.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/includes/external/matrix/node_modules/events/tests/prepend.js b/includes/external/matrix/node_modules/events/tests/prepend.js new file mode 100644 index 0000000..79afde0 --- /dev/null +++ b/includes/external/matrix/node_modules/events/tests/prepend.js @@ -0,0 +1,31 @@ +'use strict'; + +var common = require('./common'); +var EventEmitter = require('../'); +var assert = require('assert'); + +var myEE = new EventEmitter(); +var m = 0; +// This one comes last. +myEE.on('foo', common.mustCall(function () { + assert.strictEqual(m, 2); +})); + +// This one comes second. +myEE.prependListener('foo', common.mustCall(function () { + assert.strictEqual(m++, 1); +})); + +// This one comes first. +myEE.prependOnceListener('foo', + common.mustCall(function () { + assert.strictEqual(m++, 0); + })); + +myEE.emit('foo'); + +// Verify that the listener must be a function +assert.throws(function () { + var ee = new EventEmitter(); + ee.prependOnceListener('foo', null); +}, 'TypeError: The "listener" argument must be of type Function. Received type object'); |