HI there,
I've been researching for a few days whether it's possible or not to programmatically activate Dark Mode within a Swift UI Test.
Environment:
- Xcode 12.5.1
What I'm trying to achieve is: I'm using Fastlane to automate screenshots, so I would like to take one screenshot per device in dark mode. I know that Fastlane supports dark mode passing the dark_mode argument, but this will take all screenshots in dark mode. I'm looking for something like this:
func testExample() throws {
let app = XCUIApplication()
setupSnapshot(app) // Set up Fastlane snapshot
app.launch()
// Take first screenshot in light mode
snapshot("1Launch")
// Do something to enable dark mode
// Take second screenshot in dark mode
snapshot("1LaunchDarkMode")
}
What I've tried so far:
func testAppleInterfaceStyleDark() {
let app = XCUIApplication()
var launchArguments: [AnyHashable] = []
launchArguments.append("-AppleInterfaceStyle")
launchArguments.append("Dark")
app.launchArguments = launchArguments as! [String]
app.launch()
}
As suggested in this Stackoverflow answer. But for me, It doesn't work.
While researching, I found lots of questions like mine but without answer. Like this one. What makes me wonder if it's impossible to do.
I would like to know if it's impossible to stop wasting time on this, or if it's possible, how can I solve it?
Thank you.
