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@@ -0,0 +1,37 @@
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+/**
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+ * @license Copyright (c) 2003-2016, 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 Selection from '/ckeditor5/engine/treeview/selection.js';
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+import Range from '/ckeditor5/engine/treeview/range.js';
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+import Element from '/ckeditor5/engine/treeview/element.js';
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+import CKEditorError from '/ckeditor5/utils/ckeditorerror.js';
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+
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+describe( 'Selection', () => {
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+ let selection;
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+
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+ beforeEach( () => {
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+ selection = new Selection();
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+ } );
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+
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+ describe( 'addRange', () => {
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+ it( 'should throw when range is intersecting with already added range', () => {
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+ const el = new Element( 'p' );
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+ const range1 = Range.createFromParentsAndOffsets( el, 5, el, 10 );
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+ const range2 = Range.createFromParentsAndOffsets( el, 7, el, 15 );
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+ selection.addRange( range1 );
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+ expect( () => {
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+ selection.addRange( range2 );
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+ } ).to.throw( CKEditorError, 'view-selection-range-intersects' );
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+
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+ expect( () => {
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+ selection.addRange( range1 );
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+ } ).to.throw( CKEditorError, 'view-selection-range-intersects' );
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+ } );
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+ } );
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+} );
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