Iterating Over Tables in a Qt GUI Test

The Automated GUI Testing Tool Squish makes it possible to verify entire tables using a table verification point, but there are times when the requirements of a test case make it necessary to iterate over the items of the table in a GUI test.

For example, in cases where you want to compare the data in a table with that of a data file or when you need to verify a set of rows or columns for a certain condition.

The approach to iterate over the items of a table can differ somewhat depending upon whether the table in the AUT is based on a QTableView or a QTableWidget. This is because QTableWidget  comes with a built-in item model and has convenience methods for handling items, whereas the QTableView implements the interfaces defined by the QAbstractTableView class to allow it to display data provided by models derived from the QAbstractItemModel class.

Let's say we want to very that none of table cells are empty. In this case, we would iterate over the items using the columnCount  and rowCount  property of the QTableWidget:

Iterating Over QTableWidget Items:

    table = waitForObject(":Address Book - MyAddresses.adr.File_QTableWidget")
    columnCount = table.columnCount
    rowCount = table.rowCount
    for row in range(rowCount):
        for col in range(columnCount):
            item = table.item(row, col)
            itemText = item.text()
            test.log(str(itemText))
            test.verify(itemText != "")

A similar approach can also be used to iterate over the items of other Qt widgets like QTreeWidget, QListWidget.

QTableView on the other hand implements a table view that displays items from a model. Therefore we can use the Qt API to access the model directly. Iterating over QTableView items:

Iterating over QTableView items:

    table = waitForObject(":Item Views_QTableView")
    model = table.model()
    columnCount = model.columnCount()
    rowCount = model.rowCount()
    for row in range(model.rowCount()):
        for column in range(model.columnCount()):
            index = model.index(row, column)
            text = model.data(index).toString()
            test.verify(text != "")