added str and bytes mode

tests/byte.rs

@@ -2,27 +2,28 @@ use dir_embed::Embed;
 
 #[derive(Embed)]
 #[dir = "./../testdata/"]
+#[mode = "bytes"]
 pub struct Assets;
 
 #[test]
-fn get() {
+fn byte_get() {
     assert!(Assets::get("file1.txt").is_some());
 }
 
 #[test]
-fn get_missing() {
+fn byte_get_missing() {
     assert!(Assets::get("missing.txt").is_none());
 }
 
 #[test]
-fn read_content() {
+fn byte_read_content() {
     let content_should = "file1".as_bytes();
     let content_is = Assets::get("file1.txt").unwrap();
     assert_eq!(*content_is, *content_should);
 }
 
 #[test]
-fn parse_string() {
+fn byte_parse_string() {
     let file: &[u8] = Assets::get("file1.txt").expect("Can't find file");
 
     let string = str::from_utf8(file).expect("Failed to parse file");
@@ -31,14 +32,13 @@ fn parse_string() {
 }
 
 #[test]
-fn sub_directories_get() {
+fn byte_sub_directories_get() {
     assert!(Assets::get("sub/file2.txt").is_some());
 }
 
 #[test]
-fn sub_directories_content() {
+fn byte_sub_directories_content() {
     let content_should = "file2".as_bytes();
     let content_is = Assets::get("sub/file2.txt").unwrap();
     assert_eq!(*content_is, *content_should);
 }
-