iOS Picker wheel / spinner

How to test a picker wheel / spinner

Gherkin Condensed

Given that I am on a screen with a picker wheel / spinner

WHEN I use the arrow keys or ctrl + tab to move focus to a picker I SEE focus is visually indicated (strongly if high contrast enabled)
Then when I use the spacebar I SEE the picker opens
Then when I use the arrow key I SEE the selection changes

WHEN I use a screenreader AND I swipe to focus on a picker
- I HEAR its purpose is clear and matches visible label
- I HEAR it identifies itself as a button
- I HEAR any visible label is read with the picker in a single swipe
- I HEAR it expresses its value (and state if disabled/dimmed)
Then when I doubletap with the picker in focus I HEAR the options are available
Then when I swipe and doubletap on a option I HEAR the selection is changed

When I use Text resize I SEE text can resize up to 200% without losing information
When I use Increase contrast I SEE focus outline becomes high contrast

When I use	I see/hear
Arrow keys or ctrl + tab	Focus visibly moves to the picker
Spacebar	Expands/collapses picker
Arrow keys	Selects options

When I use	I hear
Swipe	Focus moves to the picker, expresses its name, role, state
Doubletap	Picker displays options

Reads	I hear
Name	Its purpose is clear and matches visible label
Role	It identifies itself as a button
Group	Any visible label is read with the picker in a single swipe
State	It expresses its value (and state if disabled/dimmed)

When I use	I see
Text resize	Text can resize up to 200% without losing information
Increase contrast	Focus outline becomes high contrast

A picker displays one or more lists of distinct values that people can choose from.