Quick UT.

Clocker/ClockerUnitTests/ClockerUnitTests.swift

@@ -430,4 +430,15 @@ class ClockerUnitTests: XCTestCase {
         XCTAssertEqual(subject.subviews.count, 2) // Two textfields
         XCTAssertEqual(subject.subviews.first?.layer?.animationKeys(), ["notimezone.emoji"])
     }
+    
+    func testDefaultsWiping() {
+        let defaultsDict: [String: Any] = ["test1" : "testString", "test2": 24]
+        let domainName = "com.test.clocker"
+        let defaults = UserDefaults(suiteName: domainName)
+        defaults?.setPersistentDomain(defaultsDict, forName: domainName)
+        defaults?.wipe(for: domainName)
+        XCTAssertNil(defaults?.object(forKey: "test1"))
+        XCTAssertNil(defaults?.object(forKey: "test2"))
+    }
+    
 }

Clocker/Overall App/AppDefaults.swift

@@ -15,9 +15,6 @@ class AppDefaults {
         let timezones = dataStore.timezones()
         let selectedCalendars = userDefaults.object(forKey: CLSelectedCalendars)
 
-        // Now delete the old preferences
-        userDefaults.wipeIfNeccesary()
-
         // Register the usual suspects
         userDefaults.register(defaults: defaultsDictionary())
 
@@ -25,13 +22,11 @@ class AppDefaults {
         userDefaults.set(selectedCalendars, forKey: CLSelectedCalendars)
 
         // Set the theme default as Light!
-        setDefaultTheme()
+        setDefaultTheme(userDefaults)
     }
 
-    private class func setDefaultTheme() {
+    private class func setDefaultTheme(_ userDefaults: UserDefaults) {
-        let defaults = UserDefaults.standard
+        if userDefaults.object(forKey: CLThemeKey) == nil {
-
-        if defaults.object(forKey: CLThemeKey) == nil {
             Themer.shared().set(theme: 0)
         }
     }
@@ -67,17 +62,7 @@ extension String {
 
 extension UserDefaults {
     // Use this with caution. Exposing this for debugging purposes only.
-    func wipe() {
+    func wipe(for bundleID: String) {
-        if let bundleID = Bundle.main.bundleIdentifier {
+        removePersistentDomain(forName: bundleID)
-            removePersistentDomain(forName: bundleID)
-        }
-    }
-
-    func wipeIfNeccesary() {
-        if object(forKey: "PreferencesHaveBeenWiped") == nil {
-            Logger.info("Wiping all user defaults")
-            wipe()
-            set(true, forKey: "PreferencesHaveBeenWiped")
-        }
     }
 }