test: add uv build integration test

Author: reedham-aws

tests/integration/buildcmd/test_build_cmd_python.py

@@ -1,4 +1,5 @@
 import logging
+import os
 import pathlib
 from typing import Set
 from unittest import skipIf
@@ -621,3 +622,22 @@ def test_unsupported_runtime(self):
         self.assertEqual(1, process_execute.process.returncode)
 
         self.assertIn("Build Failed", str(process_execute.stdout))
+
+
+class TestBuildCommand_PythonUv(BuildIntegBase):
+    def test_build_python_with_uv_experimental_flag(self):
+        # Set experimental flag
+        os.environ["SAM_CLI_BETA_UV_PACKAGE_MANAGER"] = "true"
+
+        try:
+            overrides = {"Runtime": "python3.11", "CodeUri": "Python"}
+            cmdlist = self.get_command_list(parameter_overrides=overrides)
+
+            command_result = run_command(cmdlist, cwd=self.working_dir)
+
+            # Verify build succeeded
+            self.assertEqual(command_result.process.returncode, 0)
+
+        finally:
+            # Clean up environment
+            os.environ.pop("SAM_CLI_BETA_UV_PACKAGE_MANAGER", None)