Added the file required to create the new executable.

Author: mamabusi

TestFoundation/XDGTestHelper.swift

@@ -0,0 +1,19 @@
+import Foundation
+import XCTest
+
+let storage = HTTPCookieStorage.shared
+let simpleCookie = HTTPCookie(properties: [ 
+            .name: "TestCookie",
+            .value: "Test @#$%^$&*99",
+            .path: "/",
+            .domain: "example.com",
+            ])!
+let rawValue = getenv("XDG_CONFIG_HOME")        
+let xdg_config_home = String(utf8String: rawValue!)
+storage.setCookie(simpleCookie)
+XCTAssertEqual(storage.cookies!.count, 1)
+let fm = FileManager.default
+let destPath = xdg_config_home! + "/.cookies.shared"
+var isDir = false
+let exists = fm.fileExists(atPath: destPath, isDirectory: &isDir) 
+XCTAssertTrue(exists)