Got it working

src/meta.rs

@@ -119,6 +119,23 @@ mod tests {
             }
         }
 
+        pub fn copy_file(
+            source_path: &String,
+            destination_path: &String,
+        ) -> Result<u64, std::io::Error> {
+            println!("Copying file");
+            let src_path = std::path::Path::new(source_path);
+            let dest_path = std::path::Path::new(destination_path);
+
+            println!("Src: {:?}", src_path);
+            println!("Dest: {:?}", dest_path);
+
+            match std::fs::copy(src_path, dest_path) {
+                Ok(bytes) => Ok(bytes),
+                Err(err) => Err(err),
+            }
+        }
+
         pub fn file_exists(directory: &String, filename: &String) -> Result<bool, std::io::Error> {
             match path_buf(directory, filename) {
                 Ok(pf) => Ok(pf.exists()),
@@ -350,4 +367,62 @@ mod tests {
             }
         };
     }
+
+    mod set {
+        use super::*;
+
+        #[test]
+        fn test_set_title() {
+            let filename = util::get_filename(1);
+            let dir = String::from(util::TESTFILEDIRECTORY);
+
+            let temp_file = tempfile::tempdir().expect("Could not create test directory");
+            let mut test_dir = String::from(temp_file.path().to_str().unwrap());
+            // test_dir = String::from("tests/sample_tracks3");
+            let test_filename = String::from("track08.flac");
+            let new_filepath = test_dir + "/" + &test_filename;
+
+            match file_exists(&dir, &filename) {
+                Ok(_) => {
+                    let filepath = get_full_path(&dir, &filename).unwrap();
+
+                    match util::copy_file(&filepath, &new_filepath) {
+                        Ok(_o) => match get_meta(types::Type::Title, &filepath) {
+                            Ok(title) => {
+                                let found = title == "Just roll it";
+                                assert!(found, "Meta information was not found {:?}", title);
+                                let new_title = String::from("The wind burned her");
+
+                                match set_meta(types::Type::Title, &new_filepath, &new_title) {
+                                    Ok(m) => {
+                                        assert_eq!(
+                                            new_title, m,
+                                            "New title does not match {:?}",
+                                            m
+                                        );
+                                    }
+                                    Err(err) => {
+                                        assert!(false, "Error: {:?}", err);
+                                    }
+                                }
+                            }
+                            Err(err) => {
+                                assert!(false, "Error: {:?}", err);
+                            }
+                        },
+                        Err(err) => {
+                            assert!(
+                                false,
+                                "Error: {:?} source {:?} destination {:?}",
+                                err, filepath, new_filepath
+                            );
+                        }
+                    };
+                }
+                Err(err) => {
+                    assert!(false, "Error: File does not exist {:?}", err.to_string());
+                }
+            };
+        }
+    }
 }