add get_proc_info

csst_common/io.py

@@ -195,7 +195,7 @@ def delete_section(
 
 
 def get_proc_info(**kwargs):
-    cards = [("BUILD", os.getenv("BUILD"), "")]
+    cards = [("BUILD", os.getenv("BUILD", default="-"), "")]
     for k, v in kwargs.items():
         cards.append((k, v, ""))
     header = fits.Header(cards=cards)

tests/test_fits_header_ops.py

@@ -13,7 +13,7 @@ import unittest
 
 from astropy.io import fits
 
-from csst_common.io import append_header, reformat_header, delete_section
+from csst_common.io import append_header, reformat_header, delete_section, get_proc_info
 
 
 class TestFitsHeaderOps(unittest.TestCase):
@@ -118,3 +118,7 @@ class TestFitsHeaderOps(unittest.TestCase):
 
         h_del = delete_section(h, title="WCS")
         self.assertEqual(len(h_del.cards), 7)
+
+    def test_get_proc_info(self):
+        proc_info = get_proc_info()
+        self.assertEquals(proc_info["BUILD"], "-")