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Keep test settings out of ~/Library/Preferences #5

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Merged
hollandcloud merged 1 commit into from
Oct 19, 2026
Merged

Keep test settings out of ~/Library/Preferences #5

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13 changes: 10 additions & 3 deletions Tests/ClearedTests/AppModelTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,24 @@ import Foundation

/// Settings backed by a throwaway defaults domain, so a test never reads or
/// writes the preferences of the person running it.
///
/// The suite name is an absolute path in the temporary directory, which
/// CFPreferences stores as a plain plist file there. A named suite would live in
/// ~/Library/Preferences, and `removePersistentDomain` empties it but leaves the
/// plist behind, so every test run used to add one file per test.
@MainActor
final class ScratchSettings {
let settings: Settings
private let domain = "ClearedTests.\(UUID().uuidString)"
private let path = FileManager.default.temporaryDirectory
.appending(path: "ClearedTests.\(UUID().uuidString)").path

init() {
settings = Settings(defaults: UserDefaults(suiteName: domain)!)
settings = Settings(defaults: UserDefaults(suiteName: path)!)
}

deinit {
UserDefaults.standard.removePersistentDomain(forName: domain)
// Best effort: anything left over sits in the temporary directory, which the system clears.
try? FileManager.default.removeItem(atPath: path + ".plist")
}
}

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