diff --git a/src/store.rs b/src/store.rs
index 9dbc452..24e3a23 100644
--- a/src/store.rs
+++ b/src/store.rs
@@ -71,7 +71,6 @@ impl Store {
         let mut path = self.store_path.clone();
         path.push("objects");
         path.push(&hash);
-        println!("Saved to: [{}]", path.display());
         match std::fs::write(path, content) {
             Ok(_) => hash,
             Err(_) => panic!("储存库疑似损坏，无法写入文件"),
diff --git a/src/utils/util.rs b/src/utils/util.rs
index 997ab10..908d1b0 100644
--- a/src/utils/util.rs
+++ b/src/utils/util.rs
@@ -52,6 +52,9 @@ pub fn setup_test_with_mit() {
 pub fn setup_test_with_clean_mit() {
     setup_test_without_mit();
     let _ = crate::commands::init::init();
+    list_workdir_files().iter().for_each(|path| {
+        fs::remove_file(path).unwrap();
+    });
 }
 
 pub fn setup_test_without_mit() {
@@ -77,6 +80,13 @@ pub fn ensure_test_file(path: &Path, content: option::Option<&str>) {
     }
 }
 
+pub fn ensure_no_file(path: &Path) {
+    // 以测试目录为根目录，删除文件
+    if path.exists() {
+        fs::remove_file(get_working_dir().unwrap().join(path)).unwrap();
+    }
+}
+
 /* tools for mit */
 pub fn calc_hash(data: &String) -> String {
     let mut hasher = Sha1::new();