added metadata collection routine and tests

tests/test_utils.py

@@ -1,6 +1,8 @@
 import pytest
 import os
 import numpy as np
+import cristallina.utils as utils
+
 from cristallina.utils import ROI, print_run_info, heuristic_extract_pgroup, gauss, find_nearest, xray_transmission
 
 
@@ -10,13 +12,21 @@ def test_print(capsys):
     assert "17259343145" in captured.out
     assert "scan_parameters" in captured.out
 
-	
+
+def test_collect_metadata():
+    test_pgroup_dir = "tests/data/p20841"
+    df = utils.collect_runs_metadata(test_pgroup_dir)
+
+    assert df.iloc[1]["user_tag"] == "PMS, Magnet at 78K, 400V excitation"
+    assert df.iloc[1]["start_pulseid"] == 17358560870
+
 def test_ROI():
     """API Tests"""
     r = ROI(left=1, right=2, top=4, bottom=2)
 
     assert r.width == 1
     assert r.height == 2
+    assert r.name is not None
     
     
 def test_extract_pgroup():