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+/**
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+ * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
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+ * For licensing, see LICENSE.md.
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+ */
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+
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+/* bender-tags: treeview */
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+
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+'use strict';
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+
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+import Observer from '/ckeditor5/core/treeview/observer/observer.js';
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+
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+describe( 'Observer', () => {
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+ describe( 'constructor', () => {
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+ it( 'should create Observer with properties', () => {
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+ const treeView = {};
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+ const observer = new Observer( treeView );
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+
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+ expect( observer ).to.be.an.instanceof( Observer );
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+ expect( observer ).to.have.property( 'treeView' ).that.equals( treeView );
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+ expect( observer ).to.have.property( 'isEnabled' ).that.is.false;
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+ } );
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+ } );
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+
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+ describe( 'enable', () => {
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+ it( 'should set isEnabled to true', () => {
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+ const observer = new Observer( {} );
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+
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+ expect( observer.isEnabled ).to.be.false;
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+
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+ observer.enable();
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+
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+ expect( observer.isEnabled ).to.be.true;
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+ } );
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+ } );
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+
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+ describe( 'disable', () => {
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+ it( 'should set isEnabled to false', () => {
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+ const observer = new Observer( {} );
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+
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+ observer.enable();
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+
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+ expect( observer.isEnabled ).to.be.true;
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+
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+ observer.disable();
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+
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+ expect( observer.isEnabled ).to.be.false;
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+ } );
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+ } );
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+} );
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