Virtual-environments: vmImage 'macOS-10.14': support for 'iPhone 5s' running iOS 12

[jayaddison]

Describe the bug
The html2canvas project uses Azure Pipelines to build and test across multiple operating systems and browsers (e.g. Safari on iPhone 5s running iOS 12).

As announced in a recent Azure DevOps blog post (and duplicate post?), the vmImage macOS-10.13 is now unavailable and https://github.com/niklasvh/html2canvas/pull/2204 is an attempt to upgrade to a more recent vmImage.

The documentation for macOS-10.14 seems to indicate that iPhone 5s on iOS 12 should still be a supported simulator.

During builds of html2canvas against macOS-10.14, iPhone 5s is not found as a supported device for iOS 12:

1. https://github.com/niklasvh/html2canvas/pull/2204/commits/40d3689c0e1c91aa0bf28f09d965cfa7395f1286 : log ref (ERROR [launcher:MobileSafari]: No device found for sdk 12.1 with name iPhone 5s)
2. https://github.com/niklasvh/html2canvas/pull/2204/commits/409e24cac005cce0a1f42f95d4bfd4ef4a352145 : log ref (ERROR [launcher:MobileSafari]: No device found for sdk 12.1 with name iPhone 5s )

Question
Is vmImage macOS-10.14 still supported and if so does it contain simulator support for iPhone 5s on iOS 12?

Area for Triage: Apple

Question, Bug, or Feature?: Question

Virtual environments affected

• [x] macOS 10.14
• [ ] macOS 10.15

[maxim-lobanov]

Hello @jayaddison!
What version of Xcode do you use?
I have looked at azure-pipelines yml files in html2canvas and it looks like the default one is used.
Default Xcode is different for macos-10.13 and macos-10.14 images. Xcode 10.1 is default one on macos-10.13 and Xcode 11.3.1 is default one on macos-10.14.
So based on documentation that you have shared, 12.1 sdk is available only for Xcode 10.1 (second column)

Solution:
We need to switch back to Xcode 10.1(it is still available on macos-10.14 image).
You should add the following step to your pipeline:

- script: sudo xcode-select -s "/Applications/Xcode_10.1.app"
  displayName: 'Switch Xcode'

Could you please try and let me know if it works for you?

[jayaddison]

We need to switch back to Xcode 10.1(it is still available on macos-10.14 image).
...
Could you please try and let me know if it works for you?

Thanks for the swift response @maxim-lobanov!

After some typical battles with YAML, this should be running in a moment.

Edit: this build failed as a result of omitting the suggested sudo step. I'll try adding this, although we'll have to see whether the build user is able to elevate their privileges.

[jayaddison]

The build for iOS Simulator Safari 12 has succeeded after the suggested changes. Thanks @maxim-lobanov! :tada: