Consolidate and refactor URLFormCoding tests

- Merge separate decoder and encoder test files into unified URLFormCoding Tests
- Update package dependencies and module structure
- Improve conversion implementations for URL routing
- Refactor multipart form handling with cleaner test structure
- Remove redundant test files and consolidate test models

Co-Authored-By: Claude <noreply@anthropic.com>

Author: coenttb

Package.swift

@@ -37,7 +37,7 @@ let package = Package(
         .library(name: .multipartURLFormCodingURLRouting, targets: [.multipartURLFormCodingURLRouting])
     ],
     dependencies: [
-        .package(url: "https://github.com/coenttb/pointfree-url-form-coding.git", from: "0.0.1"),
+        .package(url: "https://github.com/coenttb/pointfree-url-form-coding.git", from: "0.2.0"),
         .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.1.5"),
         .package(url: "https://github.com/pointfreeco/swift-url-routing", from: "0.6.0")
     ],

Package@swift-6.0.swift

@@ -37,7 +37,7 @@ let package = Package(
         .library(name: .multipartURLFormCodingURLRouting, targets: [.multipartURLFormCodingURLRouting])
     ],
     dependencies: [
-        .package(url: "https://github.com/coenttb/pointfree-url-form-coding.git", from: "0.0.1"),
+        .package(url: "https://github.com/coenttb/pointfree-url-form-coding.git", from: "0.2.0"),
         .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.1.5"),
         .package(url: "https://github.com/pointfreeco/swift-url-routing", from: "0.6.0")
     ],

Sources/URLMultipartFormCodingURLRouting/Conversion.swift

@@ -67,9 +67,10 @@ extension Conversion {
     /// ```
     public static func multipart<Value: Codable>(
         _ type: Value.Type,
-        decoder: Form.Decoder = .init()
+        decoder: Form.Decoder = .init(),
+        encoder: Form.Encoder = .init()
     ) -> Self where Self == Multipart.Conversion<Value> {
-        .init(type, decoder: decoder)
+        .init(type, decoder: decoder, encoder: encoder)
     }
 }
 

Sources/URLMultipartFormCodingURLRouting/Multipart.Conversion.swift

@@ -57,6 +57,7 @@ extension Multipart {
     public struct Conversion<Value: Codable> {
         /// The URL form decoder used for parsing input data.
         public let decoder: Form.Decoder
+        public let encoder: Form.Encoder
 
         /// The unique boundary string used to separate multipart fields.
         public let boundary: String
@@ -68,9 +69,11 @@ extension Multipart {
         ///   - decoder: Custom URL form decoder (optional, uses default if not provided)
         public init(
             _ type: Value.Type,
-            decoder: Form.Decoder = .init()
+            decoder: Form.Decoder = .init(),
+            encoder: Form.Encoder = .init()
         ) {
             self.decoder = decoder
+            self.encoder = encoder
             self.boundary = "Boundary-\(UUID().uuidString)"
         }
 
@@ -120,7 +123,6 @@ extension Multipart.Conversion: URLRouting.Conversion {
     public func unapply(_ output: Value) -> Foundation.Data {
         var body = Data()
 
-        let encoder = JSONEncoder()
         guard let fieldData = try? encoder.encode(output),
               var fields = try? JSONSerialization.jsonObject(with: fieldData) as? [String: Any] else {
             return body