python-tests: Exit test from one point

It is always better to have a single return/exit
from a function/test in which it would be easier for
users to understand.

Signed-off-by: Ahmed Ismail <[email protected]>

Author: AhmedIsmail02

tools/tests/test_applications.py

@@ -69,7 +69,8 @@ def test_applications(
             if index == len(pass_output):
                 break
         for x in fail_output:
-            assert x not in line
+            if x in line:
+                break
         current_time = timer()
 
     assert index == len(pass_output)

tools/tests/test_blinky_output.py

@@ -45,7 +45,8 @@ def test_blinky_output(
             if index == len(pass_output):
                 break
         for x in fail_output:
-            assert x not in line
+            if x in line:
+                break
         current_time = timer()
 
     assert index == len(pass_output)