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'use strict'; require('../common'); const assert = require('assert'); const domain = require('domain'); const EventEmitter = require('events'); const isEnumerable = Function.call.bind(Object.prototype.propertyIsEnumerable); const d = new domain.Domain(); const e = new EventEmitter(); const e2 = new EventEmitter(); d.add(e); assert.strictEqual(e.domain, d); assert.strictEqual(isEnumerable(e, 'domain'), false); // Adding the same event to a domain should not change the member count let previousMemberCount = d.members.length; d.add(e); assert.strictEqual(previousMemberCount, d.members.length); d.add(e2); assert.strictEqual(e2.domain, d); assert.strictEqual(isEnumerable(e2, 'domain'), false); previousMemberCount = d.members.length; d.remove(e2); assert.notStrictEqual(e2.domain, d); assert.strictEqual(isEnumerable(e2, 'domain'), false); assert.strictEqual(previousMemberCount - 1, d.members.length);