tests: add tests aound extension added

Sources/Common/Extensions/ResultExtensions.swift

@@ -14,4 +14,8 @@ extension Result {
         default: return nil
         }
     }
+
+    var isSuccess: Bool {
+        success != nil
+    }
 }

Tests/Common/Extensions/ResultExtensionsTests.swift

@@ -0,0 +1,20 @@
+@testable import CioInternalCommon
+import Foundation
+import SharedTests
+import XCTest
+
+class ResultExtensionsTest: UnitTest {
+    // MARK: isSuccess
+
+    func test_givenSuccess_expectIsSuccessTrue() {
+        let result: Result<String, Error> = .success("hello")
+
+        XCTAssertTrue(result.isSuccess)
+    }
+
+    func test_givenFailure_expectIsSuccessFalse() {
+        let result: Result<String, Error> = .failure(HttpRequestError.cancelled)
+
+        XCTAssertFalse(result.isSuccess)
+    }
+}