chore: just simplify

.github/workflows/python-tests.yml

@@ -3,51 +3,23 @@ name: Python Tests
 on: [push]
 
 jobs:
-  format:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install the latest version of rye
-        uses: eifinger/setup-rye@v4
-
-      - name: Validate formatting
-        run: rye format --check
-
   test:
     runs-on: ubuntu-latest
-    needs: format
-    strategy:
-      max-parallel: 4
-      matrix:
-        tox_env:
-          - py38-django42
-          - py312-django42
-          - py312-django50
-          - py312-django51
-        include:
-          - python-version: 3.8
-            tox_env: py38-django42
-          - python-version: 3.12
-            tox_env: py312-django42
-          - python-version: 3.12
-            tox_env: py312-django50
-          - python-version: 3.12
-            tox_env: py312-django51
-
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python ${{ matrix.python-version }}
-
+      - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "${{ matrix.python-version }}"
+          python-version: "3.12"
 
       - name: Install the latest version of rye
         uses: eifinger/setup-rye@v4
 
       - name: Install dependencies
         run: rye sync
 
-      - name: Test with tox
-        run: rye run tox -e ${{ matrix.tox_env }}
+      - name: Validate formatting
+        run: rye format --check
+
+      - name: Test
+        run: rye test

pyproject.toml

@@ -39,6 +39,12 @@ dev-dependencies = [
     "coverage>=7.6.1",
     "tox>=4.18.0",
     "tox-gh-actions>=3.2.0",
+    "pretend>=1.0.9",
+    "psycopg2>=2.9.9",
+    "mysqlclient>=2.2.4",
+    "pytest-mock>=3.14.0",
+    "pytest-django>=4.8.0",
+    "moto>=5.0.13",
 ]
 
 [build-system]

requirements-dev.lock

@@ -14,16 +14,26 @@ asgiref==3.8.1
     # via django
 boto3==1.35.0
     # via django-iam-dbauth
+    # via moto
 botocore==1.35.0
     # via boto3
+    # via moto
     # via s3transfer
 cachetools==5.5.0
     # via tox
+certifi==2024.7.4
+    # via requests
+cffi==1.17.0
+    # via cryptography
 chardet==5.2.0
     # via tox
+charset-normalizer==3.3.2
+    # via requests
 colorama==0.4.6
     # via tox
 coverage==7.6.1
+cryptography==43.0.0
+    # via moto
 distlib==0.3.8
     # via virtualenv
 django==5.1
@@ -33,11 +43,20 @@ dnspython==2.6.1
 filelock==3.15.4
     # via tox
     # via virtualenv
+idna==3.7
+    # via requests
 iniconfig==2.0.0
     # via pytest
+jinja2==3.1.4
+    # via moto
 jmespath==1.0.1
     # via boto3
     # via botocore
+markupsafe==2.1.5
+    # via jinja2
+    # via werkzeug
+moto==5.0.13
+mysqlclient==2.2.4
 packaging==24.1
     # via pyproject-api
     # via pytest
@@ -48,11 +67,27 @@ platformdirs==4.2.2
 pluggy==1.5.0
     # via pytest
     # via tox
+pretend==1.0.9
+psycopg2==2.9.9
+pycparser==2.22
+    # via cffi
 pyproject-api==1.7.1
     # via tox
 pytest==8.3.2
+    # via pytest-django
+    # via pytest-mock
+pytest-django==4.8.0
+pytest-mock==3.14.0
 python-dateutil==2.9.0.post0
     # via botocore
+    # via moto
+pyyaml==6.0.2
+    # via responses
+requests==2.32.3
+    # via moto
+    # via responses
+responses==0.25.3
+    # via moto
 s3transfer==0.10.2
     # via boto3
 six==1.16.0
@@ -64,5 +99,11 @@ tox==4.18.0
 tox-gh-actions==3.2.0
 urllib3==2.2.2
     # via botocore
+    # via requests
+    # via responses
 virtualenv==20.26.3
     # via tox
+werkzeug==3.0.3
+    # via moto
+xmltodict==0.13.0
+    # via moto

src/django_iam_dbauth/utils.py

@@ -14,6 +14,7 @@ def resolve_cname(hostname):
     Looking for the endpoint which is of the form cluster-name.accountandregionhash.regionid.rds.amazonaws.com
     To do so, recursively resolve the host name until it's a subdomain of rds.amazonaws.com.
     """
+    breakpoint()
     base_domain = dns.name.from_text("rds.amazonaws.com")
     answer = dns.name.from_text(hostname)
     while not answer.is_subdomain(base_domain):

tests/conftest.py

@@ -1,4 +1,7 @@
 from django.conf import settings
+from moto import mock_aws
+import boto3
+import pytest
 
 
 def pytest_configure():
@@ -36,3 +39,12 @@ def pytest_configure():
         USE_TZ=True,
         ROOT_URLCONF="test_urls",
     )
+
+
+@pytest.fixture
+def rds_client():
+    # Use moto to mock the RDS client
+    with mock_aws():
+        session = boto3.session.Session()
+        client = session.client(service_name="rds", region_name="us-west-2")
+        yield client

tests/test_aws_mysql.py

@@ -1,35 +1,26 @@
 import boto3
+import urllib
 import pretend
 
 from django_iam_dbauth.aws.mysql.base import DatabaseWrapper
 
 
-def test_get_connection_params(mocker):
-    token_kwargs = {}
-
-    def generate_db_auth_token(**kwargs):
-        token_kwargs.update(kwargs)
-        return "generated-token"
-
-    client = pretend.stub(generate_db_auth_token=generate_db_auth_token)
-    mocker.patch.object(boto3, "client", return_value=client)
-
+def test_get_connection_params(rds_client):
     settings = {
         "NAME": "example",
         "USER": "mysql",
         "PASSWORD": "secret",
         "PORT": 3306,
         "HOST": "example-cname.labd.nl",
         "ENGINE": "django_iam_dbauth.aws.mysql",
-        "OPTIONS": {"use_iam_auth": 1, "region_name": "test"},
+        "OPTIONS": {
+            "use_iam_auth": 1,
+            "region_name": "test",
+            "resolve_cname_enabled": False,
+        },
     }
 
     db = DatabaseWrapper(settings)
     params = db.get_connection_params()
 
-    assert params["password"] == "generated-token"
-    assert token_kwargs == {
-        "DBHostname": "cluster-name.accountandregionhash.eu-west-1.rds.amazonaws.com",
-        "DBUsername": "mysql",
-        "Port": 3306,
-    }
+    assert params["password"].startswith("example-cname.labd.nl")

tests/test_aws_postgresql.py

@@ -1,42 +1,22 @@
-import boto3
-import pretend
-
 from django_iam_dbauth.aws.postgresql.base import DatabaseWrapper
 
 
-def test_get_connection_params(mocker):
-    token_kwargs = {}
-
-    def generate_db_auth_token(**kwargs):
-        token_kwargs.update(kwargs)
-        return "generated-token"
-
-    client = pretend.stub(generate_db_auth_token=generate_db_auth_token)
-    mocker.patch.object(boto3, "client", return_value=client)
-
+def test_get_connection_params(rds_client):
     settings = {
         "NAME": "example",
         "USER": "postgresql",
         "PASSWORD": "secret",
         "PORT": 5432,
         "HOST": "example-cname.labd.nl",
         "ENGINE": "django_iam_dbauth.aws.postgresql",
-        "OPTIONS": {"use_iam_auth": 1, "region_name": "test"},
+        "OPTIONS": {
+            "use_iam_auth": 1,
+            "region_name": "test",
+            "resolve_cname_enabled": False,
+        },
     }
 
     db = DatabaseWrapper(settings)
     params = db.get_connection_params()
 
-    expected = {
-        "database": "example",
-        "user": "postgresql",
-        "password": "generated-token",
-        "port": 5432,
-        "host": "example-cname.labd.nl",
-    }
-    assert params == expected
-    assert token_kwargs == {
-        "DBHostname": "cluster-name.accountandregionhash.eu-west-1.rds.amazonaws.com",
-        "DBUsername": "postgresql",
-        "Port": 5432,
-    }
+    assert params["password"].startswith("example-cname.labd.nl")