Move from format() to f-string where it makes sense

As we do not maintain python 3.5 it permit to simplify some code

1 files changed, 4 insertions, 4 deletions

diff --git a/tests/message/unittest_message_definition.py b/tests/message/unittest_message_definition.py
index b9b936d67..c9870e8a1 100644
--- a/tests/message/unittest_message_definition.py
+++ b/tests/message/unittest_message_definition.py
@@ -47,11 +47,11 @@ class FalseChecker(BaseChecker):
 class TestMessagesDefinition:
     @staticmethod
     def assert_with_fail_msg(msg, expected=True):
-        fail_msg = "With minversion='{}' and maxversion='{}',".format(
-            msg.minversion, msg.maxversion
+        fail_msg = (
+            f"With minversion='{msg.minversion}' and maxversion='{msg.maxversion}',"
+            f" and the python interpreter being {sys.version_info} "
+            "the message should{}be emitable"
         )
-        fail_msg += " and the python interpreter being {} ".format(sys.version_info)
-        fail_msg += "the message should{}be emitable"
         if expected:
             assert msg.may_be_emitted(), fail_msg.format(" ")
         else: