reject unsupported tuple components

Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+JavaTranslation.swift

@@ -1458,7 +1458,14 @@ extension JNISwift2JavaGenerator {
       genericParameters: [SwiftGenericParameterDeclaration],
       genericRequirements: [SwiftGenericRequirement],
     ) throws -> JavaType {
-      try translateGenericTypeParameter(
+      switch swiftType {
+      case let .tuple(elements):
+        if elements.count != 1 { throw JavaTranslationError.unsupportedSwiftType(swiftType) }
+      default:
+        break
+      }
+
+      return try translateGenericTypeParameter(
         swiftType,
         genericParameters: genericParameters,
         genericRequirements: genericRequirements,

Tests/JExtractSwiftTests/JNI/JNIDictionaryTest.swift

@@ -322,4 +322,34 @@ struct JNIDictionaryTest {
       ]
     )
   }
+
+  @Test("Import: () -> [UInt32: tuple] is unsupported")
+  func tupleDictionaryValue_swift() throws {
+    try assertOutput(
+      input: """
+        public enum ResponseType {
+          case ok
+        }
+
+        public class BindingStore {
+          public typealias RawResponse = (requestId: UInt32, stringResponse: String, responseType: ResponseType, finished: Bool)
+          public static var completeResponses: [UInt32: RawResponse] = [:]
+        }
+        """,
+      .jni,
+      .swift,
+      expectedChunks: [],
+      notExpectedChunks: [
+        """
+        dictionaryGetJNIValue
+        """,
+        """
+        getCompleteResponses
+        """,
+        """
+        setCompleteResponses
+        """,
+      ]
+    )
+  }
 }