Implemented the MockURLProtocol protocol for mocking URL responses.

Apps/Locations/Libraries/Sources/APICore/Classes/MockURLProtocol.swift

@@ -0,0 +1,62 @@
+//
+//  MockURLProtocol.swift
+//  APICore
+//
+//  Created by Javier Cicchelli on 10/04/2023.
+//  Copyright © 2023 Röck+Cöde. All rights reserved.
+//
+
+import Foundation
+
+public class MockURLProtocol: URLProtocol {
+    
+    // MARK: Properties
+    
+    public static var mockData: [URL: MockURLResponse] = [:]
+    
+    // MARK: Functions
+    
+    public override class func canInit(with task: URLSessionTask) -> Bool {
+        true
+    }
+    
+    public override class func canInit(with request: URLRequest) -> Bool {
+        true
+    }
+    
+    public override class func canonicalRequest(for request: URLRequest) -> URLRequest {
+        request
+    }
+    
+    public override func startLoading() {
+        guard
+            let url = request.url,
+            let response = Self.mockData[url]
+        else {
+            client?.urlProtocolDidFinishLoading(self)
+            return
+        }
+        
+        if let data = response.data {
+            client?.urlProtocol(self, didLoad: data)
+        }
+        
+        if let httpResponse = HTTPURLResponse(
+            url: url,
+            statusCode: response.status,
+            httpVersion: nil,
+            headerFields: response.headers
+        ) {
+            client?.urlProtocol(
+                self,
+                didReceive: httpResponse, 
+                cacheStoragePolicy: .allowedInMemoryOnly
+            )
+        }
+
+        client?.urlProtocolDidFinishLoading(self)
+    }
+    
+    public override func stopLoading() {}
+
+}

Apps/Locations/Libraries/Sources/APICore/Models/MockURLResponse.swift

@@ -0,0 +1,31 @@
+//
+//  MockURLResponse.swift
+//  APICore
+//
+//  Created by Javier Cicchelli on 10/04/2023.
+//  Copyright © 2023 Röck+Cöde. All rights reserved.
+//
+
+import Foundation
+
+public struct MockURLResponse {
+    
+    // MARK: Properties
+    
+    public let status: Int
+    public let headers: [String: String]
+    public let data: Data?
+    
+    // MARK: Initialisers
+    
+    public init(
+        status: Int,
+        headers: [String : String],
+        data: Data? = nil
+    ) {
+        self.status = status
+        self.headers = headers
+        self.data = data
+    }
+
+}