Add a test for JWT helpers

setup.cfg

@@ -26,9 +26,10 @@ ignore_missing_imports = True
 
 [tool:pytest]
 addopts = --ignore=test_build.py
-markers = 
+markers =
 	authentication
 	db
 	fastapi_users
+    jwt
 	oauth
 	router

tests/test_jwt.py

@@ -0,0 +1,15 @@
+import pytest
+
+from fastapi_users.jwt import SecretType, generate_jwt, decode_jwt
+
+
+@pytest.mark.jwt
+def test_generate_decode_jwt(secret: SecretType):
+    audience = "TEST_AUDIENCE"
+    data = {"foo": "bar", "aud": audience}
+
+    jwt = generate_jwt(data, secret, 3600)
+    decoded = decode_jwt(jwt, secret, [audience])
+
+    assert decoded["foo"] == "bar"
+    assert decoded["aud"] == audience