[python] Add mock API tests for service/multiple-services Spector scenario

.chronus/changes/python-add-test-service-multiple-services-2026-4-2-22-40-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/http-client-python"
+---
+
+Add mock API tests for `service/multiple-services` scenario (multiple services without explicit `@client`).

packages/http-client-python/eng/scripts/ci/regenerate-common.ts

@@ -135,6 +135,9 @@ export const BASE_AZURE_EMITTER_OPTIONS: Record<
   "service/multi-service": {
     namespace: "service.multiservice",
   },
+  "service/multiple-services": {
+    namespace: "service.multipleservices",
+  },
 };
 
 export const BASE_EMITTER_OPTIONS: Record<

packages/http-client-python/generator/test/azure/mock_api_tests/asynctests/test_service_multiple_services_async.py

@@ -0,0 +1,35 @@
+# -------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for
+# license information.
+# --------------------------------------------------------------------------
+import pytest
+from azure.core.exceptions import HttpResponseError
+from service.multipleservices.aio import ServiceAClient
+from service.multipleservices.models import VersionsA
+
+
+@pytest.fixture
+def client():
+    """Fixture that creates a ServiceAClient for testing."""
+    return ServiceAClient(endpoint="http://localhost:3000")
+
+
+@pytest.mark.asyncio
+async def test_service_multiple_services_operation_a(client):
+    async with client:
+        async with ServiceAClient(endpoint="http://localhost:3000", api_version=VersionsA.AV1) as wrong_client:
+            with pytest.raises(HttpResponseError):
+                await wrong_client.operations.op_a()
+
+        await client.operations.op_a()
+
+
+@pytest.mark.asyncio
+async def test_service_multiple_services_sub_namespace_operation_a(client):
+    async with client:
+        async with ServiceAClient(endpoint="http://localhost:3000", api_version=VersionsA.AV1) as wrong_client:
+            with pytest.raises(HttpResponseError):
+                await wrong_client.sub_namespace.sub_op_a()
+
+        await client.sub_namespace.sub_op_a()

packages/http-client-python/generator/test/azure/mock_api_tests/test_service_multiple_services.py

@@ -0,0 +1,32 @@
+# -------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for
+# license information.
+# --------------------------------------------------------------------------
+import pytest
+from azure.core.exceptions import HttpResponseError
+from service.multipleservices import ServiceAClient
+from service.multipleservices.models import VersionsA
+
+
+@pytest.fixture
+def client():
+    """Fixture that creates a ServiceAClient for testing."""
+    with ServiceAClient(endpoint="http://localhost:3000") as client:
+        yield client
+
+
+def test_service_multiple_services_operation_a(client):
+    with ServiceAClient(endpoint="http://localhost:3000", api_version=VersionsA.AV1) as wrong_client:
+        with pytest.raises(HttpResponseError):
+            wrong_client.operations.op_a()
+
+    client.operations.op_a()
+
+
+def test_service_multiple_services_sub_namespace_operation_a(client):
+    with ServiceAClient(endpoint="http://localhost:3000", api_version=VersionsA.AV1) as wrong_client:
+        with pytest.raises(HttpResponseError):
+            wrong_client.sub_namespace.sub_op_a()
+
+    client.sub_namespace.sub_op_a()

packages/http-client-python/generator/test/azure/requirements.txt

@@ -55,6 +55,7 @@ azure-mgmt-core==1.6.0
 -e ./generated/resiliency-srv-driven1
 -e ./generated/resiliency-srv-driven2
 -e ./generated/service-multi-service
+-e ./generated/service-multiple-services
 # === end common azure dependencies across repos ===
 
 # === common test dependencies across repos ===

packages/http-client-python/package.json

@@ -82,7 +82,7 @@
     "@azure-tools/typespec-azure-resource-manager": "~0.66.0",
     "@azure-tools/typespec-azure-rulesets": "~0.66.0",
     "@azure-tools/typespec-client-generator-core": "~0.66.4",
-    "@azure-tools/azure-http-specs": "0.1.0-alpha.39-dev.4",
+    "@azure-tools/azure-http-specs": "0.1.0-alpha.39-dev.8",
     "@typespec/compiler": "^1.10.0",
     "@typespec/http": "^1.10.0",
     "@typespec/openapi": "^1.10.0",