diff --git a/.changeset/nasty-fishes-itch.md b/.changeset/nasty-fishes-itch.md
new file mode 100644
index 000000000..cb2b21387
--- /dev/null
+++ b/.changeset/nasty-fishes-itch.md
@@ -0,0 +1,5 @@
+---
+"@azure-tools/cadl-ranch-specs": patch
+---
+
+Add test case for client initialization
diff --git a/packages/cadl-ranch-specs/cadl-ranch-summary.md b/packages/cadl-ranch-specs/cadl-ranch-summary.md
index fbaf634ef..39a7022e8 100644
--- a/packages/cadl-ranch-specs/cadl-ranch-summary.md
+++ b/packages/cadl-ranch-specs/cadl-ranch-summary.md
@@ -1452,6 +1452,15 @@ Expected response body:
 }
 ```
 
+### Client_Initialization_Basic
+
+- Endpoint: `post /client/initialization/basic/sub-client/{name}:action`
+
+Testing that "SubClient" be initialized with "name" client property,
+and that the "action" API under "SubClient" does not take "name" parameter in method signature.
+
+Use "subclient1" as "name" parameter in test.
+
 ### Client_Naming_Header_request
 
 - Endpoint: `post /client/naming/header`
diff --git a/packages/cadl-ranch-specs/http/client/initialization/basic/main.tsp b/packages/cadl-ranch-specs/http/client/initialization/basic/main.tsp
new file mode 100644
index 000000000..0bd7f5c69
--- /dev/null
+++ b/packages/cadl-ranch-specs/http/client/initialization/basic/main.tsp
@@ -0,0 +1,31 @@
+import "@typespec/http";
+import "@azure-tools/cadl-ranch-expect";
+import "@azure-tools/typespec-client-generator-core";
+
+using TypeSpec.Http;
+using Azure.ClientGenerator.Core;
+
+/**
+ * Describe client with `@clientInitialization`
+ */
+@supportedBy("dpg")
+@scenarioService("/client/initialization/basic")
+@scenario
+@scenarioDoc("""
+  Testing that "SubClient" be initialized with "name" client property,
+  and that the "action" API under "SubClient" does not take "name" parameter in method signature.
+  
+  Use "subclient1" as "name" parameter in test.
+  """)
+namespace Client.Initialization.Basic;
+
+model SubClientOptions {
+  name: string;
+}
+
+@clientInitialization(SubClientOptions)
+interface SubClient {
+  @post
+  @route("/sub-client/{name}:action")
+  action(@path name: string): void;
+}
diff --git a/packages/cadl-ranch-specs/http/client/initialization/basic/mockapi.ts b/packages/cadl-ranch-specs/http/client/initialization/basic/mockapi.ts
new file mode 100644
index 000000000..dc28479d3
--- /dev/null
+++ b/packages/cadl-ranch-specs/http/client/initialization/basic/mockapi.ts
@@ -0,0 +1,14 @@
+import { passOnSuccess, mockapi } from "@azure-tools/cadl-ranch-api";
+import { ScenarioMockApi } from "@azure-tools/cadl-ranch-api";
+
+export const Scenarios: Record<string, ScenarioMockApi> = {};
+
+Scenarios.Client_Initialization_Basic = passOnSuccess({
+  uri: "/client/initialization/basic/sub-client/subclient1:action",
+  method: "post",
+  request: {},
+  response: {
+    status: 204,
+  },
+  kind: "MockApiDefinition",
+});