Using ARM ResourceInstanceParameters with proper return type handling

packages/typespec-ts/test/modularUnit/scenarios/apiOperations/cloudHsmClusterBackupStatusArm.md

@@ -0,0 +1,145 @@
+# CloudHSM Cluster Backup Status Get Operation with ARM ResourceInstanceParameters
+
+Should generate correct operation for getting backup status using ARM ResourceInstanceParameters with proper return type handling.
+
+## TypeSpec
+
+This is the TypeSpec definition for CloudHSM cluster backup status operation using ARM patterns.
+
+```tsp
+import "@typespec/http";
+import "@typespec/rest";
+import "@typespec/versioning";
+import "@azure-tools/typespec-azure-core";
+import "@azure-tools/typespec-azure-resource-manager";
+
+using TypeSpec.Http;
+using TypeSpec.Rest;
+using TypeSpec.Versioning;
+using Azure.Core;
+using Azure.ResourceManager;
+
+@armProviderNamespace
+@service(#{ title: "HardwareSecurityModules" })
+@versioned(Versions)
+@armCommonTypesVersion(Azure.ResourceManager.CommonTypes.Versions.v5)
+namespace Microsoft.HardwareSecurityModules;
+
+enum Versions {
+  @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
+  @useDependency(Azure.Core.Versions.v1_0_Preview_1)
+  v2021_10_01_preview: "2021-10-01-preview",
+}
+
+model BackupResult {
+  properties?: BackupResultProperties;
+}
+
+model BackupResultProperties {
+  azureStorageBlobContainerUri?: string;
+  backupId?: string;
+  status?: string;
+  statusDetails?: string;
+  startTime?: utcDateTime;
+  endTime?: utcDateTime;
+}
+
+op get(
+  @path subscriptionId: string,
+  @path resourceGroupName: string,
+  @path cloudHsmClusterName: string,
+  @path jobId: string,
+): (BackupResult &
+    Azure.Core.RequestIdResponseHeader) | ArmAcceptedResponse<ExtraHeaders = {
+    @header("Location")
+    @doc("The Location header contains the URL where the status of the long running operation can be checked.")
+    location?: string;
+  } & Azure.Core.RequestIdResponseHeader> | ErrorResponse;;
+```
+
+The config would be like:
+
+```yaml
+withRawContent: true
+```
+
+## Operations
+
+Should generate operations correctly with proper ARM pattern handling:
+
+```ts operations
+import { HardwareSecurityModulesContext as Client } from "./index.js";
+import {
+  BackupResult,
+  backupResultDeserializer,
+  errorResponseDeserializer,
+} from "../models/models.js";
+import { expandUrlTemplate } from "../static-helpers/urlTemplate.js";
+import { GetOptionalParams } from "./options.js";
+import {
+  StreamableMethod,
+  PathUncheckedResponse,
+  createRestError,
+  operationOptionsToRequestParameters,
+} from "@azure-rest/core-client";
+
+export function _getSend(
+  context: Client,
+  resourceGroupName: string,
+  cloudHsmClusterName: string,
+  jobId: string,
+  options: GetOptionalParams = { requestOptions: {} },
+): StreamableMethod {
+  const path = expandUrlTemplate(
+    "/{subscriptionId}/{resourceGroupName}/{cloudHsmClusterName}/{jobId}",
+    {
+      subscriptionId: context.subscriptionId,
+      resourceGroupName: resourceGroupName,
+      cloudHsmClusterName: cloudHsmClusterName,
+      jobId: jobId,
+    },
+    {
+      allowReserved: options?.requestOptions?.skipUrlEncoding,
+    },
+  );
+  return context
+    .path(path)
+    .get({
+      ...operationOptionsToRequestParameters(options),
+      headers: {
+        accept: "application/json",
+        ...options.requestOptions?.headers,
+      },
+    });
+}
+
+export async function _getDeserialize(
+  result: PathUncheckedResponse,
+): Promise<BackupResult> {
+  const expectedStatuses = ["200", "202"];
+  if (!expectedStatuses.includes(result.status)) {
+    const error = createRestError(result);
+    error.details = errorResponseDeserializer(result.body);
+    throw error;
+  }
+
+  return backupResultDeserializer(result.body);
+}
+
+export async function get(
+  context: Client,
+  resourceGroupName: string,
+  cloudHsmClusterName: string,
+  jobId: string,
+  options: GetOptionalParams = { requestOptions: {} },
+): Promise<BackupResult | null> {
+  const result = await _getSend(
+    context,
+    resourceGroupName,
+    cloudHsmClusterName,
+    jobId,
+    options,
+  );
+  return _getDeserialize(result);
+}
+```