Fixed issue with non xml-compliant character encodings. Added tests.

MacPassTests/KPKTextXMLUtilities.m

@@ -0,0 +1,33 @@
+//
+//  KPKTextXMLUtilities.m
+//  MacPass
+//
+//  Created by Michael Starke on 12/12/14.
+//  Copyright (c) 2014 HicknHack Software GmbH. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import <XCTest/XCTest.h>
+
+#import "KPKXmlUtilities.h"
+
+@interface KPKTextXMLUtilities : XCTestCase
+
+@end
+
+@implementation KPKTextXMLUtilities
+
+- (void)setUp {
+  [super setUp];
+}
+
+- (void)tearDown {
+  [super tearDown];
+}
+
+- (void)testExample {
+  NSString *safe = stripUnsafeCharacterForXMLFromString(@"*EORDIE\x10\x16\x12\x10");
+  XCTAssertEqualObjects(@"*EORDIE", safe);
+}
+
+@end