fix: Add async context manager return types (#496)

* fix: Add async context manager return types

chore: Mock return_value should not populate oneof message fields

chore: Support snippet generation for services that only support REST transport

chore: Update gapic-generator-python to v1.11.0
PiperOrigin-RevId: 545430278

Source-Link: googleapis/googleapis@601b532

Source-Link: https://github.com/googleapis/googleapis-gen/commit/b3f18d0f6560a855022fd058865e7620479d7af9
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYjNmMThkMGY2NTYwYTg1NTAyMmZkMDU4ODY1ZTc2MjA0NzlkN2FmOSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

google/cloud/translate_v3/services/translation_service/async_client.py

@@ -1645,7 +1645,7 @@ async def sample_delete_glossary():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "TranslationServiceAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):

google/cloud/translate_v3beta1/services/translation_service/async_client.py

@@ -1551,7 +1551,7 @@ async def sample_delete_glossary():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "TranslationServiceAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):

tests/unit/gapic/translate_v3/test_translation_service.py

@@ -2841,9 +2841,11 @@ async def test_list_glossaries_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_glossaries(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -2873,9 +2875,6 @@ def test_get_glossary(request_type, transport: str = "grpc"):
             name="name_value",
             entry_count=1210,
             display_name="display_name_value",
-            language_pair=translation_service.Glossary.LanguageCodePair(
-                source_language_code="source_language_code_value"
-            ),
         )
         response = client.get_glossary(request)
 
@@ -5610,9 +5609,6 @@ def test_get_glossary_rest(request_type):
             name="name_value",
             entry_count=1210,
             display_name="display_name_value",
-            language_pair=translation_service.Glossary.LanguageCodePair(
-                source_language_code="source_language_code_value"
-            ),
         )
 
         # Wrap the value into a proper Response obj

tests/unit/gapic/translate_v3beta1/test_translation_service.py

@@ -2713,9 +2713,11 @@ async def test_list_glossaries_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_glossaries(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -2744,9 +2746,6 @@ def test_get_glossary(request_type, transport: str = "grpc"):
         call.return_value = translation_service.Glossary(
             name="name_value",
             entry_count=1210,
-            language_pair=translation_service.Glossary.LanguageCodePair(
-                source_language_code="source_language_code_value"
-            ),
         )
         response = client.get_glossary(request)
 
@@ -5412,9 +5411,6 @@ def test_get_glossary_rest(request_type):
         return_value = translation_service.Glossary(
             name="name_value",
             entry_count=1210,
-            language_pair=translation_service.Glossary.LanguageCodePair(
-                source_language_code="source_language_code_value"
-            ),
         )
 
         # Wrap the value into a proper Response obj