1 files changed, 14 insertions, 6 deletions
diff --git a/tests/micropython/viper_error.py b/tests/micropython/viper_error.py
index ff32f5473..790f3d75c 100644
--- a/tests/micropython/viper_error.py
+++ b/tests/micropython/viper_error.py
@@ -1,11 +1,13 @@
 # test syntax and type errors specific to viper code generation
 
+
 def test(code):
     try:
         exec(code)
     except (SyntaxError, ViperTypeError, NotImplementedError) as e:
         print(repr(e))
 
+
 # viper: annotations must be identifiers
 test("@micropython.viper\ndef f(a:1): pass")
 test("@micropython.viper\ndef f() -> 1: pass")
@@ -14,30 +16,36 @@ test("@micropython.viper\ndef f() -> 1: pass")
 test("@micropython.viper\ndef f(x:unknown_type): pass")
 
 # local used before type known
-test("""
+test(
+    """
 @micropython.viper
 def f():
     print(x)
     x = 1
-""")
+"""
+)
 
 # type mismatch storing to local
-test("""
+test(
+    """
 @micropython.viper
 def f():
     x = 1
     y = []
     x = y
-""")
+"""
+)
 
 # can't implicitly convert type to bool
-test("""
+test(
+    """
 @micropython.viper
 def f():
     x = ptr(0)
     if x:
         pass
-""")
+"""
+)
 
 # incorrect return type
 test("@micropython.viper\ndef f() -> int: return []")