Fix feature detection for spectest for Windows path

Author: kateinoigakukun

Sources/Spectest/TestCase.swift

@@ -412,9 +412,9 @@ extension TestCase.Command {
         }
     }
 
-    private func deriveFeatureSet(rootPath: String) -> WasmFeatureSet {
+    private func deriveFeatureSet(rootPath: FilePath) -> WasmFeatureSet {
         var features = WasmFeatureSet.default
-        if rootPath.hasSuffix("/proposals/memory64") {
+        if rootPath.ends(with: "proposals/memory64") {
             features.insert(.memory64)
             // memory64 doesn't expect reference-types proposal
             // and it depends on the fact reference-types is disabled
@@ -424,9 +424,10 @@ extension TestCase.Command {
     }
 
     private func parseModule(rootPath: String, filename: String) throws -> Module {
-        let url = URL(fileURLWithPath: rootPath).appendingPathComponent(filename)
+        let rootPath = FilePath(rootPath)
+        let path = rootPath.appending(filename)
 
-        let module = try parseWasm(filePath: FilePath(url.path), features: deriveFeatureSet(rootPath: rootPath))
+        let module = try parseWasm(filePath: path, features: deriveFeatureSet(rootPath: rootPath))
         return module
     }