Using UbuntuTestCase as a root item hides its contents

[Tim Peeters]

If you run a test qml app with launcher, and the root item is an UbuntuTestCase, the contents will not show. This is not a problem with tests that have an Item as root and the UbuntuTestCase embedded inside that, like this example:

import QtQuick 2.2
import Ubuntu.Components 1.1
import Ubuntu.Test 1.0

//UbuntuTestCase { // use this instead of Item, and the contents shows blank
Item {
    width: units.gu(50)
    height: units.gu(80)

    MainView {
        anchors.fill: parent

        useDeprecatedToolbar: false

        Page {
            title: "Test"
            Rectangle {
                anchors.centerIn: parent
                width: 100
                height: 100
                color: "green"
            }
        }
    }

    UbuntuTestCase {
        // write your tests here
    }
}

However, if you remove the root Item and replace it by the commented-out UbuntuTestCase (the UbuntuTestCase that is embedded can then be removed, but it makes no difference in this case), then none of the contents (the MainView with a Page and Rectangle) will be visible in the window opened by launcher.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Tim Peeters (tpeeters)]

It may be related that TestCase is not visible. This is how it is implemented:

Item {
    id: testCase
    visible: false
...

[Tim Peeters (tpeeters)]

Perhaps it should not be visible, and it is not a bug but a feature that needs to be documented.