Async await for ResourceWithError

Author: lightsprint09

Source/NetworkService+Async.swift

@@ -35,4 +35,29 @@ public extension NetworkService {
         })
     }
 
+    /**
+     Fetches a resource asynchronously from remote location. Execution of the requests starts immediately.
+
+     **Example**:
+     ```swift
+     let networkService: NetworkService = //
+     let resource: ResourceWithError<String, CustomError> = //
+
+     let (result, response) = try await networkService.request(resource)
+     ```
+
+     - parameter resource: The resource you want to fetch.
+
+     - returns: a touple  containing the parsed result and the HTTP response
+     - Throws: Custom Error provided by ResourceWithError
+     */
+    @discardableResult
+    func request<Result, E: Error>(_ resource: ResourceWithError<Result, E>) async throws -> (Result, HTTPURLResponse) {
+        return try await withCheckedThrowingContinuation({ coninuation in
+            request(resource: resource, onCompletionWithResponse: {
+                coninuation.resume(with: $0)
+            })
+        })
+    }
+
 }

Tests/NetworkServiceTest.swift

@@ -239,9 +239,7 @@ class NetworkServiceTest: XCTestCase {
         XCTAssertEqual(networkAccess.request?.url?.absoluteString, "https://bahn.de/train")
     }
 
-    @available(watchOS 6.0, *)
-    @available(macOS 10.15.0, *)
-    @available(iOS 13.0.0, *)
+    @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
     func testGIVEN_aRequest_WHEN_requestWithAsyncResultAndResponse_THEN_ShouldRespond() async throws {
         // GIVEN
         networkAccess.changeMock(data: Train.validJSONData, response: .defaultMock, error: nil)
@@ -256,9 +254,7 @@ class NetworkServiceTest: XCTestCase {
         XCTAssertEqual(networkAccess.request?.url?.absoluteString, "https://bahn.de/train")
     }
 
-    @available(watchOS 6.0, *)
-    @available(macOS 10.15.0, *)
-    @available(iOS 13.0.0, *)
+    @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
     func testGIVEN_aRequest_WHEN_requestWithAsyncResultAndResponse_THEN_ShouldThwo() async {
         // GIVEN
         let error = NSError(domain: "", code: 0, userInfo: nil)

Tests/NetworkServiceWithErrorTest.swift

@@ -164,4 +164,34 @@ class NetworkServiceWithErrorTest: XCTestCase {
         }
         XCTAssertEqual(networkAccess.request?.url?.absoluteString, "https://bahn.de/train")
     }
+
+    @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
+    func testGIVEN_aRequest_WHEN_requestWithAsyncResultAndResponse_THEN_ShouldRespond() async throws {
+        // GIVEN
+        networkAccess.changeMock(data: Train.validJSONData, response: .defaultMock, error: nil)
+
+        //When
+        let (result, response) = try await networkService.request(resource)
+
+
+        //Then
+        XCTAssertEqual(result.name, self.trainName)
+        XCTAssertEqual(response, .defaultMock)
+        XCTAssertEqual(networkAccess.request?.url?.absoluteString, "https://bahn.de/train")
+    }
+
+    @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
+    func testGIVEN_aRequest_WHEN_requestWithAsyncResultAndResponse_THEN_ShouldThwo() async {
+        // GIVEN
+        let error = NSError(domain: "", code: 0, userInfo: nil)
+        networkAccess.changeMock(data: nil, response: nil, error: error)
+
+        //When
+        do {
+            try await networkService.request(resource)
+            XCTFail("Schould throw")
+        } catch let error {
+            XCTAssertTrue(error is CustomError)
+        }
+    }
 }