fix for no data

changelog.txt

@@ -6,6 +6,7 @@ jc changelog
 - Update blkid parser to fix error on parsing empty data
 - Update crontab parser to fix error on parsing empty data
 - Update crontab_u parser to fix error on parsing empty data
+- Update df parser to fix error on parsing empty data
 - Add tests to all parsers for no data condition
 
 20200610 v1.11.4

jc/parsers/df.py

@@ -73,7 +73,7 @@ import jc.parsers.universal
 
 
 class info():
-    version = '1.3'
+    version = '1.4'
     description = 'df command parser'
     author = 'Kelly Brazil'
     author_email = 'kellyjonbrazil@gmail.com'
@@ -184,14 +184,16 @@ def parse(data, raw=False, quiet=False):
         jc.utils.compatibility(__name__, info.compatible)
 
     cleandata = data.splitlines()
+    raw_output = []
 
-    # fix headers
-    cleandata[0] = cleandata[0].lower()
-    cleandata[0] = cleandata[0].replace('-', '_')
-    cleandata[0] = cleandata[0].replace('mounted on', 'mounted_on')
+    if len(cleandata) > 1:
+        # fix headers
+        cleandata[0] = cleandata[0].lower()
+        cleandata[0] = cleandata[0].replace('-', '_')
+        cleandata[0] = cleandata[0].replace('mounted on', 'mounted_on')
 
-    # parse the data
-    raw_output = jc.parsers.universal.sparse_table_parse(cleandata)
+        # parse the data
+        raw_output = jc.parsers.universal.sparse_table_parse(cleandata)
 
     if raw:
         return raw_output

tests/test_df.py

@@ -59,6 +59,12 @@ class MyTests(unittest.TestCase):
         with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/osx-10.14.6/df-h.json'), 'r', encoding='utf-8') as f:
             self.osx_10_14_6_df_h_json = json.loads(f.read())
 
+    def test_df_nodata(self):
+        """
+        Test plain 'df' with no data
+        """
+        self.assertEqual(jc.parsers.df.parse('', quiet=True), [])
+
     def test_df_centos_7_7(self):
         """
         Test plain 'df' on Centos 7.7