diff --git a/.gitignore b/.gitignore
index 937eb28..3421248 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ venv/
 .idea/
 app/*.sqlite*
 app/cert/*.*
+.pytest_cache
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c24c913..49e8c5f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,9 +16,17 @@ build:
     - docker push ${CI_REGISTRY}/${CI_PROJECT_PATH}/${CI_BUILD_REF_NAME}:${CI_BUILD_REF}
 
 test:
+  image: python:3.10-slim-bullseye
   stage: test
+  before_script:
+    - pip install -r requirements.txt
+    - pip install pytest httpx
+    - mkdir -p app/cert
+    - openssl genrsa -out app/cert/instance.private.pem 2048
+    - openssl rsa -in app/cert/instance.private.pem -outform PEM -pubout -out app/cert/instance.public.pem
+    - cd test
   script:
-    - echo "Nothing to do ..."
+    - pytest main.py
 
 deploy:
   stage: deploy
diff --git a/app/main.py b/app/main.py
index 279a12e..ae3b934 100644
--- a/app/main.py
+++ b/app/main.py
@@ -207,17 +207,13 @@ async def auth_v1_code(request: Request):
         'iat': timegm(cur_time.timetuple()),
         'exp': timegm(expires.timetuple()),
         'challenge': j['code_challenge'],
-        'origin_ref': j['code_challenge'],
+        'origin_ref': j['origin_ref'],
         'key_ref': SITE_KEY_XID,
         'kid': SITE_KEY_XID
     }
 
     auth_code = jws.sign(payload, key=jwt_encode_key, headers={'kid': payload.get('kid')}, algorithm=ALGORITHMS.RS256)
 
-    Auth.cleanup(db, origin_ref, cur_time - delta)
-    data = Auth(origin_ref=origin_ref, code_challenge=j['code_challenge'], expires=expires)
-    Auth.create(db, data)
-
     response = {
         "auth_code": auth_code,
         "sync_timestamp": cur_time.isoformat(),
@@ -235,13 +231,8 @@ async def auth_v1_token(request: Request):
     j = json.loads((await request.body()).decode('utf-8'))
     payload = jwt.decode(token=j['auth_code'], key=jwt_decode_key)
 
-    code_challenge = payload['origin_ref']
-
-    entity = Auth.find_by_code_challenge(db, code_challenge)
-    if entity is None:
-        raise HTTPException(status_code=400, detail='code challenge not found')
-    origin_ref = entity.origin_ref
-    logging.info(f'> [   auth   ]: {origin_ref} ({code_challenge}): {j}')
+    origin_ref = payload['origin_ref']
+    logging.info(f'> [   auth   ]: {origin_ref}: {j}')
 
     # validate the code challenge
     if payload['challenge'] != b64enc(sha256(j['code_verifier'].encode('utf-8')).digest()).rstrip(b'=').decode('utf-8'):
@@ -256,7 +247,7 @@ async def auth_v1_token(request: Request):
         'iss': 'https://cls.nvidia.org',
         'aud': 'https://cls.nvidia.org',
         'exp': timegm(access_expires_on.timetuple()),
-        'origin_ref': payload['origin_ref'],
+        'origin_ref': origin_ref,
         'key_ref': SITE_KEY_XID,
         'kid': SITE_KEY_XID,
     }
@@ -277,14 +268,9 @@ async def auth_v1_token(request: Request):
 async def leasing_v1_lessor(request: Request):
     j, token = json.loads((await request.body()).decode('utf-8')), get_token(request)
 
-    code_challenge = token['origin_ref']
+    origin_ref = token['origin_ref']
     scope_ref_list = j['scope_ref_list']
-
-    entity = Auth.find_by_code_challenge(db, code_challenge)
-    if entity is None:
-        raise HTTPException(status_code=400, detail='code challenge not found')
-    origin_ref = entity.origin_ref
-    logging.info(f'> [  create  ]: {origin_ref} ({code_challenge}): create leases for scope_ref_list {scope_ref_list}')
+    logging.info(f'> [  create  ]: {origin_ref}: create leases for scope_ref_list {scope_ref_list}')
 
     cur_time = datetime.utcnow()
     lease_result_list = []
@@ -323,14 +309,10 @@ async def leasing_v1_lessor(request: Request):
 async def leasing_v1_lessor_lease(request: Request):
     token = get_token(request)
 
-    code_challenge = token['origin_ref']
+    origin_ref = token['origin_ref']
 
-    entity = Auth.find_by_code_challenge(db, code_challenge)
-    if entity is None:
-        raise HTTPException(status_code=400, detail='code challenge not found')
-    origin_ref = entity.origin_ref
-    active_lease_list = list(map(lambda x: x.lease_ref, Lease.find_by_origin_ref(db, origin_ref)))
-    logging.info(f'> [  leases  ]: {origin_ref} ({code_challenge}): found {len(active_lease_list)} active leases')
+    active_lease_list = list(map(lambda x: x['lease_ref'], db['lease'].find(origin_ref=origin_ref)))
+    logging.info(f'> [  leases  ]: {origin_ref}: found {len(active_lease_list)} active leases')
 
     cur_time = datetime.utcnow()
     response = {
@@ -347,13 +329,8 @@ async def leasing_v1_lessor_lease(request: Request):
 async def leasing_v1_lease_renew(request: Request, lease_ref: str):
     token = get_token(request)
 
-    code_challenge = token['origin_ref']
-
-    entity = Auth.find_by_code_challenge(db, code_challenge)
-    if entity is None:
-        raise HTTPException(status_code=400, detail='code challenge not found')
-    origin_ref = entity.origin_ref
-    logging.info(f'> [  renew   ]: {origin_ref} ({code_challenge}): renew {lease_ref}')
+    origin_ref = token['origin_ref']
+    logging.info(f'> [  renew   ]: {origin_ref}: renew {lease_ref}')
 
     entity = Lease.find_by_origin_ref_and_lease_ref(db, origin_ref, lease_ref)
     if entity is None:
@@ -379,16 +356,11 @@ async def leasing_v1_lease_renew(request: Request, lease_ref: str):
 async def leasing_v1_lessor_lease_remove(request: Request):
     token = get_token(request)
 
-    code_challenge = token['origin_ref']
-
-    entity = Auth.find_by_code_challenge(db, code_challenge)
-    if entity is None:
-        raise HTTPException(status_code=400, detail='code challenge not found')
-    origin_ref = entity.origin_ref
+    origin_ref = token['origin_ref']
 
     released_lease_list = list(map(lambda x: x.lease_ref, Lease.find_by_origin_ref(db, origin_ref)))
     deletions = Lease.ceanup(db, origin_ref)
-    logging.info(f'> [  remove  ]: {origin_ref} ({code_challenge}): removed {deletions} leases')
+    logging.info(f'> [  remove  ]: {origin_ref}: removed {deletions} leases')
 
     cur_time = datetime.utcnow()
     response = {
diff --git a/test/main.py b/test/main.py
new file mode 100644
index 0000000..aeb52e3
--- /dev/null
+++ b/test/main.py
@@ -0,0 +1,71 @@
+from starlette.testclient import TestClient
+import importlib.util
+import sys
+
+MODULE, PATH = 'main.app', '../app/main.py'
+
+spec = importlib.util.spec_from_file_location(MODULE, PATH)
+main = importlib.util.module_from_spec(spec)
+sys.modules[MODULE] = main
+spec.loader.exec_module(main)
+
+client = TestClient(main.app)
+
+
+def test_index():
+    response = client.get('/')
+    assert response.status_code == 200
+
+
+def test_status():
+    response = client.get('/status')
+    assert response.status_code == 200
+    assert response.json()['status'] == 'up'
+
+
+def test_client_token():
+    response = client.get('/client-token')
+    assert response.status_code == 200
+
+
+def test_auth_v1_origin():
+    payload = {
+        "registration_pending": False,
+        "environment": {
+            "guest_driver_version": "guest_driver_version",
+            "hostname": "myhost",
+            "ip_address_list": ["192.168.1.123"],
+            "os_version": "os_version",
+            "os_platform": "os_platform",
+            "fingerprint": {"mac_address_list": ["ff:ff:ff:ff:ff:ff"]},
+            "host_driver_version": "host_driver_version"
+        },
+        "update_pending": False,
+        "candidate_origin_ref": "00112233-4455-6677-8899-aabbccddeeff"
+    }
+    response = client.post('/auth/v1/origin', json=payload)
+    assert response.status_code == 200
+
+
+def test_auth_v1_code():
+    pass
+
+
+def test_auth_v1_token():
+    pass
+
+
+def test_leasing_v1_lessor():
+    pass
+
+
+def test_leasing_v1_lessor_lease():
+    pass
+
+
+def test_leasing_v1_lease_renew():
+    pass
+
+
+def test_leasing_v1_lessor_lease_remove():
+    pass
diff --git a/version.env b/version.env
index 3407a86..f7fc9a2 100644
--- a/version.env
+++ b/version.env
@@ -1 +1 @@
-VERSION=0.5
+VERSION=0.6