Check file extensions for tests

test/kicad_sexpr_test.gleam

@@ -16,16 +16,24 @@ pub fn main() -> Nil {
   io.println("\nTesting Footprints")
   let assert Ok(footprint_files) =
     simplifile.get_files("/usr/share/kicad/footprints")
-  // let footprint_files = footprint_files |> list.drop(0) |> list.take(5000)
+  let footprint_files =
-  // let footprint_files = footprint_files |> list.sample(1000)
+    footprint_files
+    |> list.filter(string.ends_with(_, ".kicad_mod"))
+  // |> list.drop(0)
+  // |> list.take(1000)
+  // |> list.sample(1000)
   // let footprint_files = ["test_files/test3.kicad_mod"]
   test_read_parse_decode(footprint_files, token.footprint_file, True)
 
   io.println("\nTesting Symbol Libraries")
   let assert Ok(symbol_libraries) =
     simplifile.get_files("/usr/share/kicad/symbols")
-  // let symbol_libraries = symbol_libraries |> list.drop(0) |> list.take(20)
+  let symbol_libraries =
-  // let symbol_libraries = symbol_libraries |> list.sample(1000)
+    symbol_libraries
+    |> list.filter(string.ends_with(_, ".kicad_sym"))
+  // |> list.drop(0)
+  // |> list.take(20)
+  // |> list.sample(1000)
   // let symbol_libraries = ["test_files/test3.kicad_mod"]
   test_read_parse_decode(symbol_libraries, token.symbol_library, True)