test: ignore DeprecationWarning for credentials_file argument and Python versions (#1058)

* test: ignore DeprecationWarning for `credentials_file` argument

* add more ignores

* typo

* add ignore

* remove python 3.7 and 3.8 from kokoro unit test

* change DEFAULT_PYTHON_VERSION to 3.10

Author: Linchin

noxfile.py

@@ -32,11 +32,9 @@
 ISORT_VERSION = "isort==5.11.0"
 LINT_PATHS = ["docs", "google", "tests", "noxfile.py", "setup.py"]
 
-DEFAULT_PYTHON_VERSION = "3.8"
+DEFAULT_PYTHON_VERSION = "3.10"
 
 UNIT_TEST_PYTHON_VERSIONS: List[str] = [
-    "3.7",
-    "3.8",
     "3.9",
     "3.10",
     "3.11",

pytest.ini

@@ -9,21 +9,30 @@ filterwarnings =
     ignore:.*pkg_resources is deprecated as an API:DeprecationWarning
     # Remove warning once https://github.com/grpc/grpc/issues/35974 is fixed
     ignore:unclosed:ResourceWarning
-    # Remove after support for Python 3.7 is dropped
-    ignore:After January 1, 2024, new releases of this library will drop support for Python 3.7:DeprecationWarning
     # Remove warning once https://github.com/googleapis/gapic-generator-python/issues/1939 is fixed
     ignore:get_mtls_endpoint_and_cert_source is deprecated.:DeprecationWarning
     # DeprecationWarnings triggered by Flask 1.0 testing by Flask dependencies in test code
-    # 3.7 deprecation warnings 
+    ignore:Importing 'itsdangerous.json' is deprecated and will be removed in ItsDangerous 2.1:DeprecationWarning
+    # 3.7 deprecation warnings, remove after support for Python 3.7 is dropped
+    ignore:After January 1, 2024, new releases of this library will drop support for Python 3.7:DeprecationWarning
     ignore:Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working:DeprecationWarning
-    # 3.8 - 3.9 deprecation warnings
-    ignore:Importing 'itsdangerous.json' is deprecated and will be removed in ItsDangerous 2.1. Use Python's 'json' module instead.:DeprecationWarning
+    ignore:You are using a non-supported Python version \(3\.7:FutureWarning
+    # 3.8 deprecation warnings, remove after support for Python 3.8 is dropped
+    ignore:You are using a non-supported Python version \(3\.8:FutureWarning
+    # 3.9 deprecation warnings, remove after support for Python 3.9 is dropped
+    ignore:You are using a Python version \(3\.9:FutureWarning
+    # 3.10 deprecation warnings, remove after support for Python 3.10 is dropped
+    ignore:You are using a Python version \(3\.10:FutureWarning
     ignore:Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working:DeprecationWarning
-    # 3.12 deprecation warnings
+    # 3.12 deprecation warnings, remove after support for Python 3.12 is dropped
     ignore:Attribute s is deprecated and will be removed in Python 3.14; use value instead:DeprecationWarning
     ignore:ast.Str is deprecated and will be removed in Python 3.14; use ast.Constant instead:DeprecationWarning
     ignore:'pkgutil.get_loader' is deprecated and slated for removal in Python 3.14; use importlib.util.find_spec\(\) instead:DeprecationWarning
     # Remove warning once https://github.com/protocolbuffers/protobuf/issues/17345 is fixed
     ignore:.*Please use message_factory.GetMessageClass\(\) instead. SymbolDatabase.GetPrototype\(\) will be removed soon.:UserWarning
     # Remove warning once https://github.com/googleapis/gapic-generator-python/issues/2046 is fixed
     ignore:coroutine 'AsyncMockMixin._execute_mock_call' was never awaited:RuntimeWarning
+    # Remove when `credentials_file` argument is removed
+    ignore:The `credentials_file` argument is deprecated:DeprecationWarning
+    # Remove when load_credentials_from_file method is removed
+    ignore:The load_credentials_from_file method is deprecated:DeprecationWarning