feat(generator): Universalize constraints path and grpcio requirement in gapic-generator templates

packages/gapic-generator/gapic/templates/noxfile.py.j2

@@ -41,7 +41,12 @@ PREVIEW_PYTHON_VERSION = "3.14"
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "{{ api.naming.warehouse_package_name }}"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/gapic-generator/gapic/templates/setup.py.j2

@@ -37,7 +37,7 @@ dependencies = [
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
-    "grpcio >= 1.44.0, < 2.0.0",
+    "grpcio >= 1.59.0, < 2.0.0",
     "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",

packages/gapic-generator/gapic/templates/testing/constraints-3.10-async-rest.txt.j2

@@ -10,7 +10,7 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.21.0
 google-auth==2.35.0
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8
 {% for package_tuple, package_info in pypi_packages.items() %}

packages/gapic-generator/gapic/templates/testing/constraints-3.10.txt.j2

@@ -7,7 +7,7 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.17.1
 google-auth==2.14.1
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8
 {% for package_tuple, package_info in pypi_packages.items() %}

packages/gapic-generator/gapic/templates/tests/unit/gapic/%name_%version/%sub/test_%service.py.j2

@@ -7,6 +7,7 @@
 {% import "%namespace/%name_%version/%sub/services/%service/_shared_macros.j2" as shared_macros %}
 
 import os
+import asyncio
 {% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
 import re
 {% endif %}
@@ -140,6 +141,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/asset/noxfile.py

@@ -48,7 +48,12 @@
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "google-cloud-asset"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/gapic-generator/tests/integration/goldens/asset/setup.py

@@ -43,7 +43,7 @@
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
-    "grpcio >= 1.44.0, < 2.0.0",
+    "grpcio >= 1.59.0, < 2.0.0",
     "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",

packages/gapic-generator/tests/integration/goldens/asset/testing/constraints-3.10.txt

@@ -6,7 +6,7 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.17.1
 google-auth==2.14.1
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8
 google-cloud-access-context-manager==0.2.0

packages/gapic-generator/tests/integration/goldens/asset/tests/unit/gapic/asset_v1/test_asset_service.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -105,6 +106,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/credentials/noxfile.py

@@ -48,7 +48,12 @@
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "google-iam-credentials"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/gapic-generator/tests/integration/goldens/credentials/setup.py

@@ -43,7 +43,7 @@
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
-    "grpcio >= 1.44.0, < 2.0.0",
+    "grpcio >= 1.59.0, < 2.0.0",
     "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",

packages/gapic-generator/tests/integration/goldens/credentials/testing/constraints-3.10.txt

@@ -6,6 +6,6 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.17.1
 google-auth==2.14.1
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8

packages/gapic-generator/tests/integration/goldens/credentials/tests/unit/gapic/credentials_v1/test_iam_credentials.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -95,6 +96,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/eventarc/noxfile.py

@@ -48,7 +48,12 @@
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "google-cloud-eventarc"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/gapic-generator/tests/integration/goldens/eventarc/setup.py

@@ -43,7 +43,7 @@
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
-    "grpcio >= 1.44.0, < 2.0.0",
+    "grpcio >= 1.59.0, < 2.0.0",
     "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",

packages/gapic-generator/tests/integration/goldens/eventarc/testing/constraints-3.10.txt

@@ -6,7 +6,7 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.17.1
 google-auth==2.14.1
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8
 grpc-google-iam-v1==0.14.0

packages/gapic-generator/tests/integration/goldens/eventarc/tests/unit/gapic/eventarc_v1/test_eventarc.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -126,6 +127,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/logging/noxfile.py

@@ -48,7 +48,12 @@
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "google-cloud-logging"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [

packages/gapic-generator/tests/integration/goldens/logging/setup.py

@@ -43,7 +43,7 @@
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
-    "grpcio >= 1.44.0, < 2.0.0",
+    "grpcio >= 1.59.0, < 2.0.0",
     "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",

packages/gapic-generator/tests/integration/goldens/logging/testing/constraints-3.10.txt

@@ -6,6 +6,6 @@
 # then this file should have google-cloud-foo==1.14.0
 google-api-core==2.17.1
 google-auth==2.14.1
-grpcio==1.44.0
+grpcio==1.59.0
 proto-plus==1.22.3
 protobuf==4.25.8

packages/gapic-generator/tests/integration/goldens/logging/tests/unit/gapic/logging_v2/test_config_service_v2.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -96,6 +97,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/logging/tests/unit/gapic/logging_v2/test_logging_service_v2.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -97,6 +98,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/logging/tests/unit/gapic/logging_v2/test_metrics_service_v2.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import os
+import asyncio
 from unittest import mock
 from unittest.mock import AsyncMock
 
@@ -95,6 +96,15 @@ def modify_default_endpoint_template(client):
     return "test.{UNIVERSE_DOMAIN}" if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE) else client._DEFAULT_ENDPOINT_TEMPLATE
 
 
+@pytest.fixture(autouse=True)
+def set_event_loop():
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+
+
 def test__get_default_mtls_endpoint():
     api_endpoint = "example.googleapis.com"
     api_mtls_endpoint = "example.mtls.googleapis.com"

packages/gapic-generator/tests/integration/goldens/logging_internal/noxfile.py

@@ -48,7 +48,12 @@
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
-LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+if (CURRENT_DIRECTORY / "testing").exists():
+    LOWER_BOUND_CONSTRAINTS_FILE = (
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt"
+    )
+else:
+    LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = "google-cloud-logging"
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [