Update WooConstants with an un-scaped testing URL

`asURL()` is a private extension located on WooConstants, if we use it directle over a testing URL in the Unit Test, then the AlamoFire one will be called instead, which doesn’t deal with un-scaped strings and would keep crashing.

Author: iamgabrielma

WooCommerce/Classes/System/WooConstants.swift

@@ -256,6 +256,10 @@ extension WooConstants {
         /// URL for creating a store.
         case storeCreation = "https://woocommerce.com/start"
 
+        /// URL with un-escaped characters for testing purposes. It should read as `https://test.com/test-%E2%80%93-survey`
+        ///
+        case testURLStringWithSpecialCharacters = "https://test.com/test-–-survey"
+
         /// Returns the URL version of the receiver
         ///
         func asURL() -> URL {

WooCommerce/WooCommerceTests/System/WooConstantsTests.swift

@@ -18,14 +18,14 @@ final class WooConstantsTests: XCTestCase {
 
     func test_URL_that_contains_special_characters_when_is_escaped_properly_then_does_not_return_nil() throws {
         // Given
-        let urlStringWithSpecialCharacters = "https://test.com/test-–-survey"
+        let urlStringWithSpecialCharacters = WooConstants.URLs.testURLStringWithSpecialCharacters
         let escapedURLStringWithSpecialCharacter = "https://test.com/test-%E2%80%93-survey"
 
         // When
-        let trustedURL = try urlStringWithSpecialCharacters.asURL()
+        let trustedURL = urlStringWithSpecialCharacters.asURL()
 
         // Then
         XCTAssertNotNil(trustedURL)
-        XCTAssertEqual(trustedURL.absoluteString, escapedURLStringWithSpecialCharacter)
+        XCTAssertEqual(try trustedURL.asURL().absoluteString, escapedURLStringWithSpecialCharacter)
     }
 }