test(helpers): add comprehensive tests for HTTPError

Add tests for the HTTPError type covering initialization, property access, and LocalizedError conformance for various data scenarios. Ensures robust error reporting and future-proofing for HTTP error handling.

Author: grdsdev

Tests/HelpersTests/HTTPErrorTests.swift

@@ -0,0 +1,153 @@
+//
+//  HTTPErrorTests.swift
+//  Supabase
+//
+//  Created by Guilherme Souza on 07/05/24.
+//
+
+import Foundation
+import Helpers
+import XCTest
+
+final class HTTPErrorTests: XCTestCase {
+
+  func testInitialization() {
+    let data = Data("test error message".utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 400,
+      httpVersion: "1.1",
+      headerFields: ["Content-Type": "application/json"]
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(error.data, data)
+    XCTAssertEqual(error.response, response)
+  }
+
+  func testLocalizedErrorDescription_WithUTF8Data() {
+    let data = Data("Bad Request: Invalid parameters".utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 400,
+      httpVersion: "1.1",
+      headerFields: nil
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(
+      error.errorDescription,
+      "Status Code: 400 Body: Bad Request: Invalid parameters"
+    )
+  }
+
+  func testLocalizedErrorDescription_WithEmptyData() {
+    let data = Data()
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 404,
+      httpVersion: "1.1",
+      headerFields: nil
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(error.errorDescription, "Status Code: 404 Body: ")
+  }
+
+  func testLocalizedErrorDescription_WithNonUTF8Data() {
+    // Create data that can't be converted to UTF-8 string
+    let bytes: [UInt8] = [0xFF, 0xFE, 0xFD, 0xFC]
+    let data = Data(bytes)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 500,
+      httpVersion: "1.1",
+      headerFields: nil
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(error.errorDescription, "Status Code: 500")
+  }
+
+  func testLocalizedErrorDescription_WithJSONData() {
+    let jsonString = """
+    {
+      "error": "Validation failed",
+      "details": "Email format is invalid"
+    }
+    """
+    let data = Data(jsonString.utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 422,
+      httpVersion: "1.1",
+      headerFields: ["Content-Type": "application/json"]
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(
+      error.errorDescription,
+      "Status Code: 422 Body: \(jsonString)"
+    )
+  }
+
+  func testLocalizedErrorDescription_WithSpecialCharacters() {
+    let message = "Error with special chars: áéíóú ñ ç"
+    let data = Data(message.utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 400,
+      httpVersion: "1.1",
+      headerFields: nil
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(
+      error.errorDescription,
+      "Status Code: 400 Body: \(message)"
+    )
+  }
+
+  func testLocalizedErrorDescription_WithLargeData() {
+    let largeMessage = String(repeating: "A", count: 1000)
+    let data = Data(largeMessage.utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 413,
+      httpVersion: "1.1",
+      headerFields: nil
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    XCTAssertEqual(
+      error.errorDescription,
+      "Status Code: 413 Body: \(largeMessage)"
+    )
+  }
+
+
+  func testProperties() {
+    let data = Data("test error".utf8)
+    let response = HTTPURLResponse(
+      url: URL(string: "https://example.com")!,
+      statusCode: 400,
+      httpVersion: "1.1",
+      headerFields: ["Content-Type": "application/json"]
+    )!
+    
+    let error = HTTPError(data: data, response: response)
+    
+    // Test that properties are correctly set
+    XCTAssertEqual(error.data, data)
+    XCTAssertEqual(error.response, response)
+    XCTAssertEqual(error.response.statusCode, 400)
+    XCTAssertEqual(error.response.url, URL(string: "https://example.com")!)
+  }
+}