Merge pull request #19 from Cyerunix/patch-1

Update parser.py

pash_annotations/parser/parser.py

@@ -26,6 +26,8 @@ def parse(command) -> CommandInvocationInitial:
     i = 1
     while i < len(parsed_elements_list):
         potential_flag_or_option = parsed_elements_list[i]
+        if potential_flag_or_option == '': # empty string counts as an operand
+            break
         if potential_flag_or_option in set_of_all_flags:
             flag_name_as_string: str = dict_flag_to_primary_repr.get(potential_flag_or_option, potential_flag_or_option)
             flag: Flag = Flag(flag_name_as_string)

pash_annotations/parser/tests/test_parser_empty_str.py

@@ -0,0 +1,24 @@
+'''This is solely to test whether commands with the empty string as an operand
+such as echo "" function properly'''
+
+from pash_annotations.datatypes.CommandInvocationInitial import CommandInvocationInitial
+from pash_annotations.parser.parser import parse
+from pash_annotations.datatypes.BasicDatatypes import Operand
+
+def test_empty_str_1():
+    parser_result = parse('echo ""')
+
+    args = []
+    operands = [Operand("")]
+    expected_result = CommandInvocationInitial("echo", args, operands)
+
+    assert expected_result == parser_result
+
+def test_empty_str_2():
+    parser_result = parse('cat ""')
+
+    args = []
+    operands = [Operand("")]
+    expected_result = CommandInvocationInitial("cat", args, operands)
+
+    assert expected_result == parser_result