Added /mcp command support and cleaned up broken tests (#817)

packages/cli/src/ui/hooks/slashCommandProcessor.ts

@@ -9,7 +9,7 @@ import { type PartListUnion } from '@google/genai';
 import open from 'open';
 import process from 'node:process';
 import { UseHistoryManagerReturn } from './useHistoryManager.js';
-import { Config } from '@gemini-code/core';
+import { Config, MCPServerStatus, getMCPServerStatus } from '@gemini-code/core';
 import { Message, MessageType, HistoryItemWithoutId } from '../types.js';
 import { createShowMemoryAction } from './useShowMemoryCommand.js';
 import { GIT_COMMIT_INFO } from '../../generated/git-commit.js';
@@ -137,10 +137,75 @@ export const useSlashCommandProcessor = (
           openThemeDialog();
         },
       },
+      {
+        name: 'mcp',
+        description: 'list configured MCP servers and tools',
+        action: async (_mainCommand, _subCommand, _args) => {
+          const toolRegistry = await config?.getToolRegistry();
+          if (!toolRegistry) {
+            addMessage({
+              type: MessageType.ERROR,
+              content: 'Could not retrieve tool registry.',
+              timestamp: new Date(),
+            });
+            return;
+          }
+
+          const mcpServers = config?.getMcpServers() || {};
+          const serverNames = Object.keys(mcpServers);
+
+          if (serverNames.length === 0) {
+            addMessage({
+              type: MessageType.INFO,
+              content: 'No MCP servers configured.',
+              timestamp: new Date(),
+            });
+            return;
+          }
+
+          let message = 'Configured MCP servers and tools:\n\n';
+
+          for (const serverName of serverNames) {
+            const serverTools = toolRegistry.getToolsByServer(serverName);
+            const status = getMCPServerStatus(serverName);
+
+            // Add status indicator
+            let statusDot = '';
+            switch (status) {
+              case MCPServerStatus.CONNECTED:
+                statusDot = '🟢'; // Green dot for connected
+                break;
+              case MCPServerStatus.CONNECTING:
+                statusDot = '🟡'; // Yellow dot for connecting
+                break;
+              case MCPServerStatus.DISCONNECTED:
+              default:
+                statusDot = '🔴'; // Red dot for disconnected
+                break;
+            }
+
+            message += `${statusDot} ${serverName} (${serverTools.length} tools):\n`;
+            if (serverTools.length > 0) {
+              serverTools.forEach((tool) => {
+                message += `  - ${tool.name}\n`;
+              });
+            } else {
+              message += '  No tools available\n';
+            }
+            message += '\n';
+          }
+
+          addMessage({
+            type: MessageType.INFO,
+            content: message,
+            timestamp: new Date(),
+          });
+        },
+      },
       {
         name: 'memory',
         description:
-          'Manage memory. Usage: /memory <show|refresh|add> [text for add]',
+          'manage memory. Usage: /memory <show|refresh|add> [text for add]',
         action: (mainCommand, subCommand, args) => {
           switch (subCommand) {
             case 'show':
@@ -163,7 +228,7 @@ export const useSlashCommandProcessor = (
       },
       {
         name: 'tools',
-        description: 'list available tools',
+        description: 'list available Gemini CLI tools',
         action: async (_mainCommand, _subCommand, _args) => {
           const toolRegistry = await config?.getToolRegistry();
           const tools = toolRegistry?.getAllTools();
@@ -175,10 +240,14 @@ export const useSlashCommandProcessor = (
             });
             return;
           }
-          const toolList = tools.map((tool) => tool.name);
+
+          // Filter out MCP tools by checking if they have a serverName property
+          const geminiTools = tools.filter((tool) => !('serverName' in tool));
+          const geminiToolList = geminiTools.map((tool) => tool.name);
+
           addMessage({
             type: MessageType.INFO,
-            content: `Available tools:\n\n${toolList.join('\n')}`,
+            content: `Available Gemini CLI tools:\n\n${geminiToolList.join('\n')}`,
             timestamp: new Date(),
           });
         },
@@ -191,7 +260,7 @@ export const useSlashCommandProcessor = (
       },
       {
         name: 'about',
-        description: 'Show version info',
+        description: 'show version info',
         action: (_mainCommand, _subCommand, _args) => {
           const osVersion = process.platform;
           let sandboxEnv = 'no sandbox';
@@ -214,7 +283,7 @@ export const useSlashCommandProcessor = (
       },
       {
         name: 'bug',
-        description: 'Submit a bug report.',
+        description: 'submit a bug report',
         action: (_mainCommand, _subCommand, args) => {
           let bugDescription = _subCommand || '';
           if (args) {