Wrote test for column_index and num_columns functions in tables.py (#596

)

* Wrote test for column_index and num_columns functions in tables.py

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Co-authored-by: Burak Cakan <bcakan@xccelerated.io>

tests/test_tables.py

@@ -1938,3 +1938,13 @@ def test_no_records():
     empty_table = Table()
     records_empty_table = Table().from_records([])
     assert empty_table == records_empty_table
+
+def test_column_index(table):
+    """Test that Tables returns right index number"""
+    index = table.column_index('letter')
+    assert index == 0
+
+def test_num_columns(table):
+    """Test that Tables returns right number of columns"""
+    number = table.num_columns
+    assert number == 3