36 lines
946 B
JavaScript
36 lines
946 B
JavaScript
"use strict";
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let { EventEmitter } = ChromeUtils.importESModule(
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"resource:///modules/syncedtabs/EventEmitter.sys.mjs"
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);
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add_task(async function testSingleListener() {
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let eventEmitter = new EventEmitter();
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let spy = sinon.spy();
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eventEmitter.on("click", spy);
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eventEmitter.emit("click", "foo", "bar");
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Assert.ok(spy.calledOnce);
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Assert.ok(spy.calledWith("foo", "bar"));
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eventEmitter.off("click", spy);
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eventEmitter.emit("click");
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Assert.ok(spy.calledOnce);
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});
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add_task(async function testMultipleListeners() {
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let eventEmitter = new EventEmitter();
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let spy1 = sinon.spy();
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let spy2 = sinon.spy();
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eventEmitter.on("some_event", spy1);
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eventEmitter.on("some_event", spy2);
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eventEmitter.emit("some_event");
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Assert.ok(spy1.calledOnce);
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Assert.ok(spy2.calledOnce);
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eventEmitter.off("some_event", spy1);
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eventEmitter.emit("some_event");
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Assert.ok(spy1.calledOnce);
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Assert.ok(spy2.calledTwice);
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});
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