Makes the reason in authenticateWithBiometrics injectable

See velikanov#21

Author: trispo

PasscodeLock/PasscodeLock/PasscodeLock.swift

@@ -68,7 +68,14 @@ public class PasscodeLock: PasscodeLockType {
         guard isTouchIDAllowed else { return }
 
         let context = LAContext()
-        let reason = localizedStringFor("PasscodeLockTouchIDReason", comment: "TouchID authentication reason")
+        
+        let reason: String
+        if let configReason = configuration.touchIdReason {
+                reason = configReason
+            } else {
+                reason = localizedStringFor("PasscodeLockTouchIDReason", comment: "TouchID authentication reason")
+            }
+        
 
         context.localizedFallbackTitle = localizedStringFor("PasscodeLockTouchIDButton", comment: "TouchID authentication fallback button")
 

PasscodeLock/Protocols/PasscodeLockConfigurationType.swift

@@ -14,5 +14,6 @@ public protocol PasscodeLockConfigurationType {
     var passcodeLength: Int {get}
     var isTouchIDAllowed: Bool {get set}
     var shouldRequestTouchIDImmediately: Bool {get}
+    var touchIdReason: String? {get set}
     var maximumInccorectPasscodeAttempts: Int {get}
 }

PasscodeLockTests/Fakes/FakePasscodeLockConfiguration.swift

@@ -15,6 +15,7 @@ class FakePasscodeLockConfiguration: PasscodeLockConfigurationType {
     var isTouchIDAllowed = false
     let maximumInccorectPasscodeAttempts = 3
     let shouldRequestTouchIDImmediately = false
+    var touchIdReason: String? = nil
 
     init(repository: PasscodeRepositoryType) {