Fix Swift CI: use #filePath for fixture resolution instead of Bundle.module

SPM resource bundles can't follow symlinks in CI. Use #filePath-based
path resolution to navigate to tests/fixtures/ directly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: deftio

bindings/swift/Package.swift

@@ -16,10 +16,7 @@ let package = Package(
         .testTarget(
             name: "TriepackTests",
             dependencies: ["Triepack"],
-            path: "Tests/TriepackTests",
-            resources: [
-                .copy("fixtures"),
-            ]
+            path: "Tests/TriepackTests"
         ),
     ]
 )

bindings/swift/Tests/TriepackTests/TriepackTests.swift

@@ -8,15 +8,17 @@ final class TriepackTests: XCTestCase {
     // MARK: - Fixture Helpers
 
     private func fixtureURL(_ name: String) -> URL {
-        // Try Bundle.module first (SPM resource bundle)
-        #if swift(>=5.3)
-        if let url = Bundle.module.url(forResource: name, withExtension: nil, subdirectory: "fixtures") {
-            return url
-        }
-        #endif
-        // Fallback: navigate from test file location to fixtures
+        // Navigate from this source file to the shared fixtures directory.
+        // Works with both local symlink and direct path resolution.
         let testFile = URL(fileURLWithPath: #filePath)
-        let fixturesDir = testFile.deletingLastPathComponent().appendingPathComponent("fixtures")
+        let fixturesDir = testFile
+            .deletingLastPathComponent()  // TriepackTests/
+            .deletingLastPathComponent()  // Tests/
+            .deletingLastPathComponent()  // swift/
+            .deletingLastPathComponent()  // bindings/
+            .deletingLastPathComponent()  // repo root
+            .appendingPathComponent("tests")
+            .appendingPathComponent("fixtures")
         return fixturesDir.appendingPathComponent(name)
     }