mini-signals/dist/mini-signals-binding.spec.js

signals, in TypeScript, fast

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const src_1 = require("../src");
const chai_1 = require("chai");
describe('MiniSignalsBinding', () => {
    describe('MiniSignalsBinding#detach', () => {
        /* istanbul ignore next */
        function foo() {
            pattern.push('foo');
        }
        /* istanbul ignore next */
        function bar() {
            pattern.push('bar');
        }
        /* istanbul ignore next */
        function a() {
            pattern.push('a');
        }
        /* istanbul ignore next */
        function b() {
            pattern.push('b');
        }
        let e;
        let pattern;
        beforeEach(() => {
            e = new src_1.MiniSignal();
            pattern = [];
        });
        it('should only remove the specific listener', () => {
            e.add(a);
            e.add(b);
            const _bar = e.add(bar);
            (0, chai_1.expect)(e.handlers().length).equals(3);
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;b;bar');
            pattern = [];
            _bar.detach();
            (0, chai_1.expect)(e.handlers().length).equals(2);
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;b');
        });
        it('should remove from front', () => {
            const _bar = e.add(bar);
            e.add(a);
            e.add(b);
            (0, chai_1.expect)(e.handlers().length).equals(3);
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('bar;a;b');
            pattern = [];
            _bar.detach();
            (0, chai_1.expect)(e.handlers().length).equals(2);
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;b');
        });
        it('should remove from middle', () => {
            e.add(a);
            const _bar = e.add(bar);
            e.add(b);
            (0, chai_1.expect)(e.handlers().length).equals(3);
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;bar;b');
            pattern = [];
            _bar.detach();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;b');
        });
        it('emits to all event listeners after removing', () => {
            e.add(a);
            const _foo = e.add(foo);
            e.add(b);
            _foo.detach();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;b');
        });
        it('can remove previous node in dispatch', () => {
            const _foo = e.add(foo);
            e.add(foo2);
            e.add(a);
            e.dispatch();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('foo;foo2;a;foo2;a');
            function foo2() {
                pattern.push('foo2');
                _foo.detach();
            }
        });
        it('can remove next node in dispatch', () => {
            e.add(a);
            e.add(foo2);
            const _foo = e.add(foo);
            e.dispatch();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;foo2;a;foo2'); // will remove node this dispatch (might be unexpected)
            function foo2() {
                pattern.push('foo2');
                _foo.detach();
            }
        });
        it('can remove node in dispatch', () => {
            e.add(foo2);
            e.add(a);
            const _foo = e.add(foo);
            e.dispatch();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('foo2;a;foo2;a'); // will remove node this dispatch (might be unexpected)
            function foo2() {
                pattern.push('foo2');
                _foo.detach();
            }
        });
        it('can remove current node in dispatch', () => {
            e.add(a);
            const _foo = e.add(foo2);
            e.add(b);
            e.dispatch();
            e.dispatch();
            (0, chai_1.expect)(pattern.join(';')).equals('a;foo2;b;a;b');
            function foo2() {
                pattern.push('foo2');
                _foo.detach();
            }
        });
        it('can be called multiple times', () => {
            const binding = e.add(foo);
            (0, chai_1.expect)(binding._owner === e);
            binding.detach();
            (0, chai_1.expect)(binding._owner === null);
            binding.detach();
            binding.detach();
        });
        it('Should not throw error when calling detach after detachAll', () => {
            const binding = e.add(foo);
            e.detachAll();
            binding.detach();
        });
    });
});