use amazon credentials on workflow

.github/workflows/lint-and-test.yml

@@ -6,6 +6,12 @@ on:
 permissions:
   pull-requests: read
 
+env:
+  API_KEY: ${{ secrets.API_KEY }}
+  API_SECRET: ${{ secrets.API_SECRET }}
+  AFFILIATE_TAG: ${{ secrets.AFFILIATE_TAG }}
+  COUNTRY_CODE: ${{ secrets.COUNTRY_CODE }}
+
 jobs:
   ruff:
     runs-on: ubuntu-latest

tests/integration_test.py

@@ -0,0 +1,17 @@
+import os
+from unittest import TestCase, skipUnless
+
+
+def are_credentials_defined() -> bool:
+    api_key = os.environ.get("API_KEY")
+    api_secret = os.environ.get("API_SECRET")
+    affiliate_tag = os.environ.get("AFFILIATE_TAG")
+    country_code = os.environ.get("COUNTRY_CODE")
+
+    return all([api_key, api_secret, affiliate_tag, country_code])
+
+
+@skipUnless(are_credentials_defined(), "Needs Amazon API credentials")
+class IntegrationTest(TestCase):
+    def test_it_works(self):
+        self.assertTrue(True)