[Key Vault] Target multiple API versions with tests (secrets) (Azure#18183)

Author: mccoyp

sdk/keyvault/azure-keyvault-secrets/dev_requirements.txt

@@ -4,4 +4,5 @@
 -e ../azure-mgmt-keyvault
 -e ../../../tools/azure-sdk-tools
 ../azure-keyvault-nspkg
-aiohttp>=3.0; python_version >= '3.5'
+aiohttp>=3.0; python_version >= '3.5'
+parameterized>=0.7.3

sdk/keyvault/azure-keyvault-secrets/tests/_test_case.py

@@ -0,0 +1,63 @@
+# ------------------------------------
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+# ------------------------------------
+import functools
+
+from azure.keyvault.secrets import ApiVersion
+from azure.keyvault.secrets._shared import HttpChallengeCache
+from azure.keyvault.secrets._shared.client_base import DEFAULT_VERSION
+from devtools_testutils import AzureTestCase, PowerShellPreparer
+from parameterized import parameterized, param
+import pytest
+
+
+def client_setup(testcase_func):
+    """decorator that creates a client to be passed in to a test method"""
+    @PowerShellPreparer("keyvault", azure_keyvault_url="https://vaultname.vault.azure.net")
+    @functools.wraps(testcase_func)
+    def wrapper(test_class_instance, azure_keyvault_url, api_version, **kwargs):
+        test_class_instance._skip_if_not_configured(api_version)
+        client = test_class_instance.create_client(azure_keyvault_url, api_version=api_version, **kwargs)
+
+        if kwargs.get("is_async"):
+            import asyncio
+
+            coroutine = testcase_func(test_class_instance, client)
+            loop = asyncio.get_event_loop()
+            loop.run_until_complete(coroutine)
+        else:
+            testcase_func(test_class_instance, client)
+    return wrapper
+
+
+def get_decorator(**kwargs):
+    """returns a test decorator for test parameterization"""
+    params = [param(api_version=api_version, **kwargs) for api_version in ApiVersion]
+    return functools.partial(parameterized.expand, params, name_func=suffixed_test_name)
+
+
+def suffixed_test_name(testcase_func, param_num, param):
+    return "{}_{}".format(testcase_func.__name__, parameterized.to_safe_name(param.kwargs.get("api_version")))
+
+
+class SecretsTestCase(AzureTestCase):
+    def tearDown(self):
+        HttpChallengeCache.clear()
+        assert len(HttpChallengeCache._cache) == 0
+        super(SecretsTestCase, self).tearDown()
+
+    def create_client(self, vault_uri, **kwargs):
+        if kwargs.pop("is_async", False):
+            from azure.keyvault.secrets.aio import SecretClient
+            credential = self.get_credential(SecretClient, is_async=True)
+        else:
+            from azure.keyvault.secrets import SecretClient
+            credential = self.get_credential(SecretClient)
+        return self.create_client_from_credential(
+            SecretClient, credential=credential, vault_url=vault_uri, **kwargs
+        )
+
+    def _skip_if_not_configured(self, api_version, **kwargs):
+        if self.is_live and api_version != DEFAULT_VERSION:
+            pytest.skip("This test only uses the default API version for live tests")