test: adjust jwt claims error test to avoid failure

The JWT claims IO test fails too often. This breaks our
workflows. This commit adjusts the edge cases in test to
prevent flakiness.

test/io/test_io.py

@@ -102,20 +102,20 @@ def test_jwt_errors(defaultenv):
         assert response.status_code == 401
         assert response.json()["message"] == 'role "not_existing" does not exist'
 
-        # -31 seconds, because we allow clock skew of 30 seconds
+        # -35 seconds, because we allow clock skew of 30 seconds
-        headers = jwtauthheader({"exp": relativeSeconds(-31)}, SECRET)
+        headers = jwtauthheader({"exp": relativeSeconds(-35)}, SECRET)
         response = postgrest.session.get("/", headers=headers)
         assert response.status_code == 401
         assert response.json()["message"] == "JWT expired"
 
-        # 31 seconds, because we allow clock skew of 30 seconds
+        # 35 seconds, because we allow clock skew of 30 seconds
-        headers = jwtauthheader({"nbf": relativeSeconds(31)}, SECRET)
+        headers = jwtauthheader({"nbf": relativeSeconds(35)}, SECRET)
         response = postgrest.session.get("/", headers=headers)
         assert response.status_code == 401
         assert response.json()["message"] == "JWT not yet valid"
 
-        # 31 seconds, because we allow clock skew of 30 seconds
+        # 35 seconds, because we allow clock skew of 35 seconds
-        headers = jwtauthheader({"iat": relativeSeconds(31)}, SECRET)
+        headers = jwtauthheader({"iat": relativeSeconds(35)}, SECRET)
         response = postgrest.session.get("/", headers=headers)
         assert response.status_code == 401
         assert response.json()["message"] == "JWT issued at future"