feat: create parent dirs for new_path, and add test case for tsdb.mig…

…rate();

tests/test_tsdb.py

@@ -49,7 +49,13 @@ def test_3_dataset_purging(self):
         tsdb.delete_cache("physionet_2012")  # delete single
         tsdb.delete_cache()  # delete all
 
-    def test_4_logging(self):
+    def test_4_migrate(self):
+        os.makedirs("dir_for_migration")
+        with open("dir_for_migration/test.txt", "a") as f:
+            f.write("hello world")
+        tsdb.migrate("dir_for_migration", "new_dir/put_it_here")
+
+    def test_5_logging(self):
         # different level logging
         self.logger.debug("debug")
         self.logger.info("info")

tsdb/utils/file.py

@@ -112,6 +112,7 @@ def migrate(old_path: str, new_path: str) -> None:
     """
     if not os.path.exists(old_path):
         raise FileNotFoundError(f"Given old_path {old_path} does not exist.")
+
     if os.path.exists(new_path):
         logger.warning(f"Please note that new_path {new_path} already exists.")
         # if new_path exists, we have to move everything from old_path into it
@@ -123,10 +124,12 @@ def migrate(old_path: str, new_path: str) -> None:
                 shutil.copytree(old_f_path, new_f_path)
             else:
                 shutil.move(old_f_path, new_path)
-
         shutil.rmtree(old_path, ignore_errors=True)
     else:
         # if new_path does not exist, just rename the old_path into it
+        new_parent_dir = os.path.abspath(os.path.join(new_path, ".."))
+        if not os.path.exists(new_parent_dir):
+            os.makedirs(new_parent_dir, exist_ok=True)
         os.rename(old_path, new_path)
 
     config = ConfigParser()