Style fixes in generated code

tests/datatests/mod.rs

@@ -1,10 +1,10 @@
 // This file is generated by build.rs
 
-use std::path::Path;
-use std::fs::File;
-use std::io::Read;
 use super::common::TestCase;
 use super::get_library;
+use std::fs::File;
+use std::io::Read;
+use std::path::Path;
 
 fn integration_tests(input: &Path) {
     let mut str: String = "".to_string();
@@ -15,10 +15,7 @@ fn integration_tests(input: &Path) {
     test_case.run_test(get_library());
 }
 
-
 #[test]
 fn basic_single_turn() {
     integration_tests(Path::new("tests/test_cases/basic_single_turn.yaml"));
 }
-
-