Updated tests to match the formatting work done in the admin repo

Signed-off-by: Carlo Costino <carlo.costino@gsa.gov>

tests/notifications_utils/test_url_safe_tokens.py

@@ -1,7 +1,7 @@
 import urllib
 
+import pytest
 from itsdangerous import BadSignature, SignatureExpired
-from pytest import fail
 
 from notifications_utils.url_safe_token import check_token, generate_token
 
@@ -19,7 +19,7 @@ def test_should_throw_exception_when_token_is_tampered_with():
     token = generate_token(str(uuid.uuid4()), "secret-key", "dangerous-salt")
     try:
         check_token(token + "qerqwer", "secret-key", "dangerous-salt", 30)
-        fail()
+        pytest.fail("Expected a BadSignature")
     except BadSignature:
         pass
 
@@ -31,6 +31,6 @@ def test_return_none_when_token_is_expired():
     token = urllib.parse.unquote(token)
     try:
         assert check_token(token, "secret-key", "dangerous-salt", max_age) is None
-        fail("Expected a SignatureExpired exception")
+        pytest.fail("Expected a SignatureExpired exception")
     except SignatureExpired:
         pass