48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
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var tape = require("tape");
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var EventEmitter = require("..");
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tape.test("eventemitter", function(test) {
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var ee = new EventEmitter();
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var fn;
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var ctx = {};
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test.doesNotThrow(function() {
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ee.emit("a", 1);
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ee.off();
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ee.off("a");
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ee.off("a", function() {});
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}, "should not throw if no listeners are registered");
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test.equal(ee.on("a", function(arg1) {
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test.equal(this, ctx, "should be called with this = ctx");
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test.equal(arg1, 1, "should be called with arg1 = 1");
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}, ctx), ee, "should return itself when registering events");
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ee.emit("a", 1);
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ee.off("a");
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test.same(ee._listeners, { a: [] }, "should remove all listeners of the respective event when calling off(evt)");
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ee.off();
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test.same(ee._listeners, {}, "should remove all listeners when just calling off()");
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ee.on("a", fn = function(arg1) {
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test.equal(this, ctx, "should be called with this = ctx");
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test.equal(arg1, 1, "should be called with arg1 = 1");
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}, ctx).emit("a", 1);
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ee.off("a", fn);
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test.same(ee._listeners, { a: [] }, "should remove the exact listener when calling off(evt, fn)");
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ee.on("a", function() {
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test.equal(this, ee, "should be called with this = ee");
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}).emit("a");
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test.doesNotThrow(function() {
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ee.off("a", fn);
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}, "should not throw if no such listener is found");
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test.end();
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});
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