How to test Dynamic Type (larger font sizes) in iOS Simulator
Changing Dynamic Type settings in iOS can be done manually (Settings > General > Accessibility > Larger Text).
But this does not appear to work in the current Simulator (v9.3 at the time of writing), and doing so manually is not a solution where automation is required.
Question: Is there a way to launch an app with Dynamic Type settings to launch an app with larger font sizes?
Note: This is not only useful for UI testing, but also for the purpose of creating screenshots using Fastlane Snapshot with larger font sizes.
As of Xcode 8, there is a better option than the undocumented launch arguments: Accessibility Inspector. It is covered in this talk and can be found under Xcode > Open Developer Tool.
Update for Xcode 11+
There is a new Environment Overrides option. Find more information in this answer.
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