Map wrapped cancellation in the Amiibo live client to the cancelled error.

Tests/AmiiboService/Cases/Public/Clients/AmiiboLiveClientTests.swift

@@ -42,5 +42,51 @@ struct AmiiboLiveClientTests {
         // THEN
         #expect(url == expected)
     }
-    
+
+    // MARK: Error mapping tests
+
+    @Test(
+        "maps an error thrown by the transport to the matching service error",
+        arguments: zip(
+            TransportErrors.thrown,
+            TransportErrors.expected
+        )
+    )
+    func mapsTransportError(
+        thrown: any Error,
+        expected: AmiiboServiceError
+    ) async {
+        // GIVEN
+        let client = AmiiboLiveClient(transport: ThrowingTransport(error: thrown))
+
+        // WHEN
+        // THEN
+        await #expect(throws: expected) {
+            try await client.getAmiibos(by: .init())
+        }
+    }
+
+}
+
+// MARK: - Arguments
+
+private enum TransportErrors {
+    /// Errors thrown by the transport.
+    static let thrown: [any Error] = [
+        CancellationError(),
+        URLError(.cancelled),
+        URLError(.cannotParseResponse),
+        URLError(.notConnectedToInternet),
+        URLError(.timedOut),
+        URLError(.badURL)
+    ]
+    /// The service error expected for each thrown error.
+    static let expected: [AmiiboServiceError] = [
+        .cancelled,
+        .cancelled,
+        .decoding,
+        .notAvailable,
+        .notAvailable,
+        .unknown(String(describing: URLError(.badURL)))
+    ]
 }