Added unit tests for "add()" method for file upload

- Added OC.Upload.init() to make the code testable
- Added unit tests for the add() method of the uploader with some error
  cases

apps/files/tests/js/fileUploadSpec.js

@@ -0,0 +1,127 @@
+/**
+* ownCloud
+*
+* @author Vincent Petry
+* @copyright 2014 Vincent Petry <pvince81@owncloud.com>
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+/* global OC */
+describe('OC.Upload tests', function() {
+	var $dummyUploader;
+	var testFile;
+
+	beforeEach(function() {
+		testFile = {
+			name: 'test.txt',
+			size: 5000, // 5 KB
+			type: 'text/plain',
+			lastModifiedDate: new Date()
+		};
+		// need a dummy button because file-upload checks on it
+		$('#testArea').append(
+			'<input type="file" id="file_upload_start" name="files[]" multiple="multiple">' +
+			'<input type="hidden" id="upload_limit" name="upload_limit" value="10000000">' + // 10 MB
+			'<input type="hidden" id="free_space" name="free_space" value="50000000">' // 50 MB
+		);
+		$dummyUploader = $('#file_upload_start');
+	});
+	afterEach(function() {
+		delete window.file_upload_param;
+		$dummyUploader = undefined;
+	});
+	describe('Adding files for upload', function() {
+		var params;
+		var failStub;
+
+		beforeEach(function() {
+			params = OC.Upload.init();
+			failStub = sinon.stub();
+			$dummyUploader.on('fileuploadfail', failStub);
+		});
+		afterEach(function() {
+			params = undefined;
+			failStub = undefined;
+		});
+
+		/**
+		 * Add file for upload
+		 * @param file file data
+		 */
+		function addFile(file) {
+			return params.add.call(
+					$dummyUploader[0],
+					{},
+					{
+					originalFiles: {},
+					files: [file]
+				});
+		}
+
+		it('adds file when size is below limits', function() {
+			var result = addFile(testFile);
+			expect(result).toEqual(true);
+		});
+		it('adds file when free space is unknown', function() {
+			var result;
+			$('#free_space').val(-2);
+
+			result = addFile(testFile);
+
+			expect(result).toEqual(true);
+			expect(failStub.notCalled).toEqual(true);
+		});
+		it('does not add file if it exceeds upload limit', function() {
+			var result;
+			$('#upload_limit').val(1000);
+
+			result = addFile(testFile);
+
+			expect(result).toEqual(false);
+			expect(failStub.calledOnce).toEqual(true);
+			expect(failStub.getCall(0).args[1].textStatus).toEqual('sizeexceedlimit');
+			expect(failStub.getCall(0).args[1].errorThrown).toEqual(
+				'Total file size 5 kB exceeds upload limit 1000 B'
+			);
+		});
+		it('does not add file if it exceeds free space', function() {
+			var result;
+			$('#free_space').val(1000);
+
+			result = addFile(testFile);
+
+			expect(result).toEqual(false);
+			expect(failStub.calledOnce).toEqual(true);
+			expect(failStub.getCall(0).args[1].textStatus).toEqual('notenoughspace');
+			expect(failStub.getCall(0).args[1].errorThrown).toEqual(
+				'Not enough free space, you are uploading 5 kB but only 1000 B is left'
+			);
+		});
+		it('does not add file if it has invalid characters', function() {
+			var result;
+			testFile.name = 'stars*stars.txt';
+
+			result = addFile(testFile);
+
+			expect(result).toEqual(false);
+			expect(failStub.calledOnce).toEqual(true);
+			expect(failStub.getCall(0).args[1].textStatus).toEqual('invalidcharacters');
+			expect(failStub.getCall(0).args[1].errorThrown.substr(0, 12)).toEqual(
+				'Invalid name'
+			);
+		});
+	});
+});