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/*
 * This file is part of the MediaWiki extension MultimediaViewer.
 *
 * MultimediaViewer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * MultimediaViewer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MultimediaViewer.  If not, see <http://www.gnu.org/licenses/>.
 */

( function ( mw, $ ) {
	QUnit.module( 'mw.mmv.ui.reuse.utils', QUnit.newMwEnvironment() );

	QUnit.test( 'Sanity test, object creation and UI construction', function ( assert ) {
		var utils = new mw.mmv.ui.Utils();

		assert.ok( utils, 'ReuseUtils object is created.' );
	} );

	QUnit.test( 'createPulldownMenu():', function ( assert ) {
		var utils = new mw.mmv.ui.Utils(),
			menuItems = [ 'original', 'small', 'medium', 'large' ],
			def = 'large',
			menu = utils.createPulldownMenu(
				menuItems,
				[ 'mw-mmv-download-size' ],
				def
			),
			options = menu.getMenu().getItems(),
			i, data;

		assert.strictEqual( options.length, 4, 'Menu has correct number of items.' );

		for ( i = 0; i < menuItems.length; i++ ) {
			data = options[ i ].getData();

			assert.strictEqual( data.name, menuItems[ i ], 'Correct item name on the list.' );
			assert.strictEqual( data.height, null, 'Correct item height on the list.' );
			assert.strictEqual( data.width, null, 'Correct item width on the list.' );
		}

		assert.strictEqual( menu.getMenu().findSelectedItem(), options[ 3 ], 'Default set correctly.' );
	} );

	QUnit.test( 'updateMenuOptions():', function ( assert ) {
		var utils = new mw.mmv.ui.Utils(),
			menu = utils.createPulldownMenu(
				[ 'original', 'small', 'medium', 'large' ],
				[ 'mw-mmv-download-size' ],
				'original'
			),
			options = menu.getMenu().getItems(),
			width = 700,
			height = 500,
			sizes = utils.getPossibleImageSizesForHtml( width, height ),
			oldMessage = mw.message;

		mw.message = function ( messageKey ) {
			assert.ok( messageKey.match( /^multimediaviewer-(small|medium|original|embed-dimensions)/ ), 'messageKey passed correctly.' );

			return { text: $.noop };
		};

		utils.updateMenuOptions( sizes, options );

		mw.message = oldMessage;
	} );

	QUnit.test( 'getPossibleImageSizesForHtml()', function ( assert ) {
		var utils = new mw.mmv.ui.Utils(),
			exampleSizes = [
				// Big wide image
				{
					width: 2048, height: 1536,
					expected: {
						small: { width: 193, height: 145 },
						medium: { width: 640, height: 480 },
						large: { width: 1200, height: 900 },
						original: { width: 2048, height: 1536 }
					}
				},

				// Big tall image
				{
					width: 201, height: 1536,
					expected: {
						small: { width: 19, height: 145 },
						medium: { width: 63, height: 480 },
						large: { width: 118, height: 900 },
						original: { width: 201, height: 1536 }
					}
				},

				// Very small image
				{
					width: 15, height: 20,
					expected: {
						original: { width: 15, height: 20 }
					}
				}
			],
			i, cursize, opts;
		for ( i = 0; i < exampleSizes.length; i++ ) {
			cursize = exampleSizes[ i ];
			opts = utils.getPossibleImageSizesForHtml( cursize.width, cursize.height );
			assert.deepEqual( opts, cursize.expected, 'We got the expected results out of the size calculation function.' );
		}
	} );

}( mediaWiki, jQuery ) );