[feat] OutputSource: Add inline_condition() method

- Lock feature with a test

duniterpy/documents/transaction.py

@@ -200,13 +200,21 @@ class OutputSource:
 
     def inline(self) -> str:
         """
-        Return an inline string format of the document
+        Return an inline string format of the output source
 
         :return:
         """
         return "{0}:{1}:{2}".format(self.amount, self.base,
                                     pypeg2.compose(self.condition, output.Condition))
 
+    def inline_condition(self) -> str:
+        """
+        Return an inline string format of the output source’s condition
+
+        :return:
+        """
+        return pypeg2.compose(self.condition, output.Condition)
+
     @staticmethod
     def condition_from_text(text) -> Condition:
         """

tests/documents/test_transaction.py

@@ -492,3 +492,9 @@ class TestTransaction(unittest.TestCase):
         output_source_str = "460:0:SIG(8kXygUHh1vLjmcRzXVM86t38EL8dfFJgfBeHmkaWLamu)"
         o = OutputSource.from_inline(output_source_str)
         self.assertEqual(o.inline(), output_source_str)
+
+
+    def test_outputsource_inline_condition(self):
+        output_source_str = "460:0:SIG(8kXygUHh1vLjmcRzXVM86t38EL8dfFJgfBeHmkaWLamu)"
+        o = OutputSource.from_inline(output_source_str)
+        self.assertEqual(o.inline_condition(), output_source_str.split(":")[2])