add tests

Author: grdsdev

Tests/AuthTests/SessionManagerTests.swift

@@ -118,4 +118,46 @@ final class SessionManagerTests: XCTestCase {
       (0..<10).map { _ in validSession.accessToken }
     )
   }
+
+  func testRefreshSession_shouldNotRemoveSession_whenErrorIsURLErrorCancelled() async throws {
+    let currentSession = Session.validSession
+    Dependencies[clientID].sessionStorage.store(currentSession)
+
+    await http.when(
+      { $0.url.path.contains("/token") },
+      return: { _ in
+        throw URLError(.cancelled)
+      }
+    )
+
+    do {
+      _ = try await sut.refreshSession(currentSession.refreshToken)
+      XCTFail("Expected a \(URLError.cancelled) failure")
+    } catch let error as URLError {
+      XCTAssertEqual(error.code, .cancelled)
+    }
+
+    XCTAssertNotNil(Dependencies[clientID].sessionStorage.get())
+  }
+
+  func testRefreshSession_shouldNotRemoveSession_whenErrorIsCancellationError() async throws {
+    let currentSession = Session.validSession
+    Dependencies[clientID].sessionStorage.store(currentSession)
+
+    await http.when(
+      { $0.url.path.contains("/token") },
+      return: { _ in
+        throw CancellationError()
+      }
+    )
+
+    do {
+      _ = try await sut.refreshSession(currentSession.refreshToken)
+      XCTFail("Expected a \(CancellationError.self) failure")
+    } catch is CancellationError {
+      // no-op
+    }
+
+    XCTAssertNotNil(Dependencies[clientID].sessionStorage.get())
+  }
 }