Facing issue using 'Expand TreeItem' with multiple items.

[albertorivi77]

ISSUE Description:
I'm working on a WPF application that use DevExpress library.
Sometimes and inside tree taht contain multiple treeitems (10000 items) an exception will be retrieved from the 'Expand TreeItem' function:

Full Name: Test.Expand Folder10
Start / End / Elapsed: 20230802 17:55:48.422 / 20230802 17:56:11.477 / 00:00:23.055
Status: FAIL
FlaUiError: Incorrect syntax usage 'self.current_treeitem.Expand()'

Test code:
${IODataServerTreeItem} /Window[@name="xxxx"]/Group[@AutomationId="dockingManager"]/Group[@AutomationId="rootLayoutGroup"]/Tab/Group[@AutomationId="UFProjectExplorerUIControl_Panel"]/Custom[@AutomationId="UFProjectExplorerUIControl"]/Tree/Pane[@AutomationId="dataPresenter"]/TreeItem[@name="I/O Data Server"]

${folder1TreeItem} /Window[@name="xxxx"]/Group[@AutomationId="dockingManager"]/Group[@AutomationId="rootLayoutGroup"]/Group/Tab/Group[@AutomationId="I_O_Data_Server__emptyProject__Panel"]/Custom/Tab/TabItem[@AutomationId="DXTabItemtabAddressSpace"]/Custom/Tab/TabItem[@AutomationId="DXTabItemtreeListTab"]/Tree/Pane[@AutomationId="dataPresenter"]

Expand Folder10
FlaUILibrary.Double Click ${IODataServerTreeItem}
FlaUILibrary.Wait Until Element Is Visible ${folder1TreeItem} 10 Element Not Loaded
FlaUILibrary.Expand Treeitem ${folder1TreeItem} N:folder_10
FlaUILibrary.Wait Until Element Is Visible ${folder1Variable2TreeItem} 10 Element Not Loaded
FlaUILibrary.Select Treeitem ${folder1TreeItem} N:variable_02
FlaUILibrary.Collapse Treeitem ${folder1TreeItem} N:folder_10
FlaUILibrary.Click ${addressSpaceTabCloseButton}

Anyone facing this kind of issue?

[Nepitwin]

@albertorivi77

Which kind of exception do you receive?

[albertorivi77]

Hi @Nepitwin

I receive this error:
FlaUiError: Incorrect syntax usage 'self.current_treeitem.Expand()

I see this error more often when also I expand different treeitem that contains many item. In case the test contain use one or two treeitem command this error will not raised.

[Nepitwin]

Okay thanks for you response. Afterwards this issue should be easily to reproduce if many treeitems will be created. To investigate if it's a flaui issue here and how to solve it.

[Nepitwin]

@albertorivi77

I can see from the code that if an exception occurs when opening a treeview, the error mentioned occurs.

                try:
                    if action == TreeItemAction.EXPAND:
                        node.Expand()
                    elif action == TreeItemAction.COLLAPSE:
                        node.Collapse()
                    elif action == TreeItemAction.SELECT:
                        node.Select()
                except ValueError:
                    raise FlaUiError(FlaUiError.FalseSyntax.format(
                        "self.current_treeitem." + action.value + "()")) from None
                except InvalidOperationException:
                    raise FlaUiError(FlaUiError.ElementNotExpandable.format(node.Name)) from None
                except Exception:
                    raise FlaUiError(FlaUiError.FalseSyntax.format(
                        "self.current_treeitem." + action.value + "()")) from None

Unfortunately, the error type of C# is suppressed and you cannot see which error is forcing it. I am currently also not able to reproduce the error.

Do you have an example of this?