Testing CRUD Operations with Swift and XCTest

import XCTest

class TestCRUDOperations: XCTestCase {
    var todoId: Int?
    let baseUrl = "http://localhost:8000"

    override func setUp() {
        super.setUp()
        // Setup Actions: Prepare a new todo
        let todoData: [String: Any] = [
            "title": "Setup Todo",
            "description": "For testing CRUD operations",
            "done": false
        ]
        let expectation = self.expectation(description: "Create Todo")
        
        var request = URLRequest(url: URL(string: "\(baseUrl)/todos")!)
        request.httpMethod = "POST"
        request.httpBody = try? JSONSerialization.data(withJSONObject: todoData)
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        
        URLSession.shared.dataTask(with: request) { data, response, error in
            if let data = data, let response = response as? HTTPURLResponse, response.statusCode == 201 {
                let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any]
                self.todoId = json?["id"] as? Int
            }
            expectation.fulfill()
        }.resume()
        
        waitForExpectations(timeout: 5, handler: nil)
    }

    override func tearDown() {
        // Teardown Actions: Clean up by deleting the todo
        if let todoId = todoId {
            let expectation = self.expectation(description: "Delete Todo")
            
            var request = URLRequest(url: URL(string: "\(baseUrl)/todos/\(todoId)")!)
            request.httpMethod = "DELETE"
            
            URLSession.shared.dataTask(with: request) { _, _, _ in
                expectation.fulfill()
            }.resume()
            
            waitForExpectations(timeout: 5, handler: nil)
        }
        super.tearDown()
    }
}