message: test: imported function with unknown type
diff: using namespace fizzy;
  using namespace fizzy::test;
  +TEST(validation, imported_function_unknown_type)
  +{
  + /* wat2wasm --no-check
  + (type (func (result i32)))
  + (func (import "m" "f") (type 1))
  + */
  + const auto wasm = from_hex("0061736d010000000105016000017f020701016d01660001");
  + EXPECT_THROW_MESSAGE(
  + parse(wasm), validation_error, "invalid type index of an imported function");
  +}
  +
  TEST(validation, import_memories_multiple)
  {
  const auto section_contents =
  