add IPC test for MCP config lifecycle

Author: ammar-agent

tests/ipc/mcpConfig.test.ts

@@ -0,0 +1,56 @@
+import * as fs from "fs/promises";
+import * as path from "path";
+import { shouldRunIntegrationTests, cleanupTestEnvironment, createTestEnvironment } from "./setup";
+import { createTempGitRepo, cleanupTempGitRepo, resolveOrpcClient } from "./helpers";
+
+const describeIntegration = shouldRunIntegrationTests() ? describe : describe.skip;
+
+describeIntegration("MCP project configuration", () => {
+  test.concurrent("add, list, and remove MCP servers", async () => {
+    const env = await createTestEnvironment();
+    const repoPath = await createTempGitRepo();
+    const client = resolveOrpcClient(env);
+
+    try {
+      // Register project
+      const createResult = await client.projects.create({ projectPath: repoPath });
+      expect(createResult.success).toBe(true);
+
+      // Initially empty
+      const initial = await client.projects.mcp.list({ projectPath: repoPath });
+      expect(initial).toEqual({});
+
+      // Add server
+      const addResult = await client.projects.mcp.add({
+        projectPath: repoPath,
+        name: "chrome-devtools",
+        command: "npx chrome-devtools-mcp@latest",
+      });
+      expect(addResult.success).toBe(true);
+
+      // Should list the added server
+      const listed = await client.projects.mcp.list({ projectPath: repoPath });
+      expect(listed).toEqual({ "chrome-devtools": "npx chrome-devtools-mcp@latest" });
+
+      // Config file should be written
+      const configPath = path.join(repoPath, ".mux", "mcp.jsonc");
+      const file = await fs.readFile(configPath, "utf-8");
+      expect(JSON.parse(file)).toEqual({
+        servers: { "chrome-devtools": "npx chrome-devtools-mcp@latest" },
+      });
+
+      // Remove server
+      const removeResult = await client.projects.mcp.remove({
+        projectPath: repoPath,
+        name: "chrome-devtools",
+      });
+      expect(removeResult.success).toBe(true);
+
+      const finalList = await client.projects.mcp.list({ projectPath: repoPath });
+      expect(finalList).toEqual({});
+    } finally {
+      await cleanupTestEnvironment(env);
+      await cleanupTempGitRepo(repoPath);
+    }
+  });
+});