Separate parser and helpers from Password class for better testability

passKitTests/Helpers/StringExtensionTest.swift

@@ -0,0 +1,35 @@
+//
+//  StringExtensionTest.swift
+//  passKitTests
+//
+//  Created by Danny Moesch on 30.09.18.
+//  Copyright © 2018 Bob Sun. All rights reserved.
+//
+
+import XCTest
+
+@testable import passKit
+
+class StringExtensionTest: XCTestCase {
+
+    func testStringByAddingPercentEncodingForRFC3986() {
+        [
+            ("!#$&'()*+,/:;=?@[]^", "%21%23%24%26%27%28%29%2A%2B%2C/%3A%3B%3D?%40%5B%5D%5E"),
+            ("-._~/?", "-._~/?"),
+            ("A*b!c", "A%2Ab%21c"),
+        ].forEach { unencoded, encoded in
+            XCTAssertEqual(unencoded.stringByAddingPercentEncodingForRFC3986(), encoded)
+        }
+    }
+
+    func testConcatenateAsLines() {
+        [
+            ("a" | "b", "a\nb"),
+            ("" | "b", "\nb"),
+            ("a" | "", "a"),
+            ("" | "", ""),
+        ].forEach { concatenated, result in
+            XCTAssertEqual(concatenated, result)
+        }
+    }
+}