Add --keep option to setup-test task (#12308)

Allow keeping existing data

tasks.py

@@ -1840,6 +1840,7 @@ def test(
 @task(
     help={
         'dev': 'Set up development environment at the end',
+        'keep': 'Keep existing demo dataset (do not re-clone)',
         'validate_files': 'Validate media files are correctly copied',
         'use_ssh': 'Use SSH protocol for cloning the demo dataset (requires SSH key)',
         'branch': 'Specify branch of demo-dataset to clone (default = main)',
@@ -1848,12 +1849,13 @@ def test(
 )
 def setup_test(
     c,
-    ignore_update=False,
-    dev=False,
-    validate_files=False,
-    use_ssh=False,
-    verbose=False,
-    path='inventree-demo-dataset',
+    ignore_update: bool = False,
+    dev: bool = False,
+    keep: bool = False,
+    validate_files: bool = False,
+    use_ssh: bool = False,
+    verbose: bool = False,
+    path: str = 'inventree-demo-dataset',
     branch='main',
 ):
     """Setup a testing environment."""
@@ -1866,6 +1868,7 @@ def setup_test(
 
     template_dir = local_dir().joinpath(path)
 
+    if not keep:
         # Remove old data directory
         if template_dir.exists():
             run(c, f'rm {template_dir} -r')