Fix empty details view after renaming a file

"FileList._updateDetailsView" expects either a file name (as a string)
or a file model (as an "OCA.File.FileInfoModel"), but when called
through "updateInList" an "OC.Files.FileInfo" object was given instead.
As the given attribute was not a model "_updateDetailsView" treated it
as a file name and tried to get the model for that file, which failed
and caused the details view to be emptied.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

apps/files/js/filelist.js

@@ -2071,7 +2071,7 @@
 
 			function updateInList(fileInfo) {
 				self.updateRow(tr, fileInfo);
-				self._updateDetailsView(fileInfo, false);
+				self._updateDetailsView(fileInfo.name, false);
 			}
 
 			// TODO: too many nested blocks, move parts into functions

apps/files/tests/js/filelistSpec.js

@@ -651,6 +651,36 @@ describe('OCA.Files.FileList tests', function() {
 
 			expect(notificationStub.calledOnce).toEqual(true);
 		});
+		it('Shows renamed file details if rename ajax call suceeded', function() {
+			fileList.showDetailsView('One.txt');
+
+			expect($('#app-sidebar').hasClass('disappear')).toEqual(false);
+			expect(fileList._detailsView.getFileInfo().get('id')).toEqual(1);
+			expect(fileList._detailsView.getFileInfo().get('name')).toEqual('One.txt');
+
+			doRename();
+
+			deferredRename.resolve(201);
+
+			expect($('#app-sidebar').hasClass('disappear')).toEqual(false);
+			expect(fileList._detailsView.getFileInfo().get('id')).toEqual(1);
+			expect(fileList._detailsView.getFileInfo().get('name')).toEqual('Tu_after_three.txt');
+		});
+		it('Shows again file details if rename ajax call failed', function() {
+			fileList.showDetailsView('One.txt');
+
+			expect($('#app-sidebar').hasClass('disappear')).toEqual(false);
+			expect(fileList._detailsView.getFileInfo().get('id')).toEqual(1);
+			expect(fileList._detailsView.getFileInfo().get('name')).toEqual('One.txt');
+
+			doRename();
+
+			deferredRename.reject(403);
+
+			expect($('#app-sidebar').hasClass('disappear')).toEqual(false);
+			expect(fileList._detailsView.getFileInfo().get('id')).toEqual(1);
+			expect(fileList._detailsView.getFileInfo().get('name')).toEqual('One.txt');
+		});
 		it('Correctly updates file link after rename', function() {
 			var $tr;
 			doRename();