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WIP: Add tapping of accessibility element using AXLabel #758

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jhildensperger
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Motivation

Tapping (x,y) is great, but we might not always know the coordinates of an element on all devices.

In addition to tapping a coordinate, we can leverage the accessibility elements of the screen to find the coordinates of the element we'd like to tap. This is very similar to how developers would write their UITests in their normal workflow.

Elements supported for interaction

class HIDElementType(Enum):
    back = "back button"
    button = "button"
    text = "text"
    textfield = "text field"

Examples

Tap the first back button on the screen:
idb ui axtap back

Tap a button:
idb ui axtap button "My Button"

Tap some text:
idb ui axtap text "some text with an attached gesture recognizer"

Tap a text field:
idb ui axtap textfield TextField

Test Plan

TBD

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x += axframe["x"]
y += axframe["y"]
break
except:
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What could make it raise?

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I think the enum will raise a ValueError if it doesn't exist for the role:
HIDElementType(item["role_description"])

I'm happy to change that if there is a preferred way of handling this scenario.

axElement = HIDElementType(item["role_description"])
axLabel = item["AXLabel"]

elementFound = axElement == element and (
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For all the element types except for back, does it make sense to allow commands without a label?

The current behavior is that:

$ idb ui axtap button

Succeeds and returns the first button it encounters, right?

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Yes, it just uses the first element of the type.

It's debatable where or not that is useful because I don't know if we can guarantee that the order of accessibilityInfo.json is the same every run, though it appeared that way when testing.

@@ -121,6 +121,13 @@ class HIDButtonType(Enum):
SIRI = 5


class HIDElementType(Enum):
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Could you show an example of each of these from an actual output?

for n in range(count):
await self.send_events(tap_to_events(x, y, duration))
else:
print("AXElement with AXLabel: ", label, " type: ", element, " not found.")
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We could log it, however let's not send it to stdout and preserve the current tap behavior.

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👍 Can change to logging instead of print.

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I would not preserve the current tap behavior because the coordinates provided are suppose to be relative to the accessibility element's frame and default to (1,1). It is probably better to just do nothing than send tap to unintended coordinates.

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@fgasperij Thanks for the feedback. I would like to also have some test coverage, but I can't see to get all of the tests to run. Could to please share the command to run the tests?

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3 participants