feat: Add reverse search capability for shell commands (#4793)

1 files changed, 0 insertions, 1312 deletions

diff --git a/packages/cli/src/ui/hooks/useCompletion.test.ts b/packages/cli/src/ui/hooks/useCompletion.test.ts
deleted file mode 100644
index 3a401194..00000000
--- a/packages/cli/src/ui/hooks/useCompletion.test.ts
+++ /dev/null
@@ -1,1312 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/** @vitest-environment jsdom */
-
-import { describe, it, expect, beforeEach, vi, afterEach } from 'vitest';
-import { renderHook, act } from '@testing-library/react';
-import { useCompletion } from './useCompletion.js';
-import * as fs from 'fs/promises';
-import * as path from 'path';
-import * as os from 'os';
-import { CommandContext, SlashCommand } from '../commands/types.js';
-import { Config, FileDiscoveryService } from '@google/gemini-cli-core';
-import { useTextBuffer } from '../components/shared/text-buffer.js';
-
-describe('useCompletion', () => {
-  let testRootDir: string;
-  let mockConfig: Config;
-
-  // A minimal mock is sufficient for these tests.
-  const mockCommandContext = {} as CommandContext;
-  let testDirs: string[];
-
-  async function createEmptyDir(...pathSegments: string[]) {
-    const fullPath = path.join(testRootDir, ...pathSegments);
-    await fs.mkdir(fullPath, { recursive: true });
-    return fullPath;
-  }
-
-  async function createTestFile(content: string, ...pathSegments: string[]) {
-    const fullPath = path.join(testRootDir, ...pathSegments);
-    await fs.mkdir(path.dirname(fullPath), { recursive: true });
-    await fs.writeFile(fullPath, content);
-    return fullPath;
-  }
-
-  // Helper to create real TextBuffer objects within renderHook
-  function useTextBufferForTest(text: string, cursorOffset?: number) {
-    return useTextBuffer({
-      initialText: text,
-      initialCursorOffset: cursorOffset ?? text.length,
-      viewport: { width: 80, height: 20 },
-      isValidPath: () => false,
-      onChange: () => {},
-    });
-  }
-
-  beforeEach(async () => {
-    testRootDir = await fs.mkdtemp(
-      path.join(os.tmpdir(), 'completion-unit-test-'),
-    );
-    testDirs = [testRootDir];
-    mockConfig = {
-      getTargetDir: () => testRootDir,
-      getWorkspaceContext: () => ({
-        getDirectories: () => testDirs,
-      }),
-      getProjectRoot: () => testRootDir,
-      getFileFilteringOptions: vi.fn(() => ({
-        respectGitIgnore: true,
-        respectGeminiIgnore: true,
-      })),
-      getEnableRecursiveFileSearch: vi.fn(() => true),
-      getFileService: vi.fn(() => new FileDiscoveryService(testRootDir)),
-    } as unknown as Config;
-
-    vi.clearAllMocks();
-  });
-
-  afterEach(async () => {
-    vi.restoreAllMocks();
-    await fs.rm(testRootDir, { recursive: true, force: true });
-  });
-
-  describe('Core Hook Behavior', () => {
-    describe('State Management', () => {
-      it('should initialize with default state', () => {
-        const slashCommands = [
-          { name: 'dummy', description: 'dummy' },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest(''),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        expect(result.current.suggestions).toEqual([]);
-        expect(result.current.activeSuggestionIndex).toBe(-1);
-        expect(result.current.visibleStartIndex).toBe(0);
-        expect(result.current.showSuggestions).toBe(false);
-        expect(result.current.isLoadingSuggestions).toBe(false);
-      });
-
-      it('should reset state when isActive becomes false', () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            altNames: ['?'],
-            description: 'Show help',
-            action: vi.fn(),
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result, rerender } = renderHook(
-          ({ text }) => {
-            const textBuffer = useTextBufferForTest(text);
-            return useCompletion(
-              textBuffer,
-              testDirs,
-              testRootDir,
-              slashCommands,
-              mockCommandContext,
-              mockConfig,
-            );
-          },
-          { initialProps: { text: '/help' } },
-        );
-
-        // Inactive because of the leading space
-        rerender({ text: ' /help' });
-
-        expect(result.current.suggestions).toEqual([]);
-        expect(result.current.activeSuggestionIndex).toBe(-1);
-        expect(result.current.visibleStartIndex).toBe(0);
-        expect(result.current.showSuggestions).toBe(false);
-        expect(result.current.isLoadingSuggestions).toBe(false);
-      });
-
-      it('should reset all state to default values', () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            description: 'Show help',
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/help'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        act(() => {
-          result.current.setActiveSuggestionIndex(5);
-          result.current.setShowSuggestions(true);
-        });
-
-        act(() => {
-          result.current.resetCompletionState();
-        });
-
-        expect(result.current.suggestions).toEqual([]);
-        expect(result.current.activeSuggestionIndex).toBe(-1);
-        expect(result.current.visibleStartIndex).toBe(0);
-        expect(result.current.showSuggestions).toBe(false);
-        expect(result.current.isLoadingSuggestions).toBe(false);
-      });
-    });
-
-    describe('Navigation', () => {
-      it('should handle navigateUp with no suggestions', () => {
-        const slashCommands = [
-          { name: 'dummy', description: 'dummy' },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest(''),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        act(() => {
-          result.current.navigateUp();
-        });
-
-        expect(result.current.activeSuggestionIndex).toBe(-1);
-      });
-
-      it('should handle navigateDown with no suggestions', () => {
-        const slashCommands = [
-          { name: 'dummy', description: 'dummy' },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest(''),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        act(() => {
-          result.current.navigateDown();
-        });
-
-        expect(result.current.activeSuggestionIndex).toBe(-1);
-      });
-
-      it('should navigate up through suggestions with wrap-around', () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            description: 'Show help',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/h'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        expect(result.current.suggestions.length).toBe(1);
-        expect(result.current.activeSuggestionIndex).toBe(0);
-
-        act(() => {
-          result.current.navigateUp();
-        });
-
-        expect(result.current.activeSuggestionIndex).toBe(0);
-      });
-
-      it('should navigate down through suggestions with wrap-around', () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            description: 'Show help',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/h'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        expect(result.current.suggestions.length).toBe(1);
-        expect(result.current.activeSuggestionIndex).toBe(0);
-
-        act(() => {
-          result.current.navigateDown();
-        });
-
-        expect(result.current.activeSuggestionIndex).toBe(0);
-      });
-
-      it('should handle navigation with multiple suggestions', () => {
-        const slashCommands = [
-          { name: 'help', description: 'Show help' },
-          { name: 'stats', description: 'Show stats' },
-          { name: 'clear', description: 'Clear screen' },
-          { name: 'memory', description: 'Manage memory' },
-          { name: 'chat', description: 'Manage chat' },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        expect(result.current.suggestions.length).toBe(5);
-        expect(result.current.activeSuggestionIndex).toBe(0);
-
-        act(() => {
-          result.current.navigateDown();
-        });
-        expect(result.current.activeSuggestionIndex).toBe(1);
-
-        act(() => {
-          result.current.navigateDown();
-        });
-        expect(result.current.activeSuggestionIndex).toBe(2);
-
-        act(() => {
-          result.current.navigateUp();
-        });
-        expect(result.current.activeSuggestionIndex).toBe(1);
-
-        act(() => {
-          result.current.navigateUp();
-        });
-        expect(result.current.activeSuggestionIndex).toBe(0);
-
-        act(() => {
-          result.current.navigateUp();
-        });
-        expect(result.current.activeSuggestionIndex).toBe(4);
-      });
-
-      it('should handle navigation with large suggestion lists and scrolling', () => {
-        const largeMockCommands = Array.from({ length: 15 }, (_, i) => ({
-          name: `command${i}`,
-          description: `Command ${i}`,
-        })) as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/command'),
-            testDirs,
-            testRootDir,
-            largeMockCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        expect(result.current.suggestions.length).toBe(15);
-        expect(result.current.activeSuggestionIndex).toBe(0);
-        expect(result.current.visibleStartIndex).toBe(0);
-
-        act(() => {
-          result.current.navigateUp();
-        });
-
-        expect(result.current.activeSuggestionIndex).toBe(14);
-        expect(result.current.visibleStartIndex).toBe(Math.max(0, 15 - 8));
-      });
-    });
-  });
-
-  describe('Slash Command Completion (`/`)', () => {
-    describe('Top-Level Commands', () => {
-      it('should suggest all top-level commands for the root slash', async () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            altNames: ['?'],
-            description: 'Show help',
-          },
-          {
-            name: 'stats',
-            altNames: ['usage'],
-            description: 'check session stats. Usage: /stats [model|tools]',
-          },
-          {
-            name: 'clear',
-            description: 'Clear the screen',
-          },
-          {
-            name: 'memory',
-            description: 'Manage memory',
-            subCommands: [
-              {
-                name: 'show',
-                description: 'Show memory',
-              },
-            ],
-          },
-          {
-            name: 'chat',
-            description: 'Manage chat history',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions.length).toBe(slashCommands.length);
-        expect(result.current.suggestions.map((s) => s.label)).toEqual(
-          expect.arrayContaining(['help', 'clear', 'memory', 'chat', 'stats']),
-        );
-      });
-
-      it('should filter commands based on partial input', async () => {
-        const slashCommands = [
-          {
-            name: 'memory',
-            description: 'Manage memory',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/mem'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toEqual([
-          { label: 'memory', value: 'memory', description: 'Manage memory' },
-        ]);
-        expect(result.current.showSuggestions).toBe(true);
-      });
-
-      it('should suggest commands based on partial altNames', async () => {
-        const slashCommands = [
-          {
-            name: 'stats',
-            altNames: ['usage'],
-            description: 'check session stats. Usage: /stats [model|tools]',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/usag'), // part of the word "usage"
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toEqual([
-          {
-            label: 'stats',
-            value: 'stats',
-            description: 'check session stats. Usage: /stats [model|tools]',
-          },
-        ]);
-      });
-
-      it('should NOT provide suggestions for a perfectly typed command that is a leaf node', async () => {
-        const slashCommands = [
-          {
-            name: 'clear',
-            description: 'Clear the screen',
-            action: vi.fn(),
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/clear'), // No trailing space
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toHaveLength(0);
-        expect(result.current.showSuggestions).toBe(false);
-      });
-
-      it.each([['/?'], ['/usage']])(
-        'should not suggest commands when altNames is fully typed',
-        async (query) => {
-          const mockSlashCommands = [
-            {
-              name: 'help',
-              altNames: ['?'],
-              description: 'Show help',
-              action: vi.fn(),
-            },
-            {
-              name: 'stats',
-              altNames: ['usage'],
-              description: 'check session stats. Usage: /stats [model|tools]',
-              action: vi.fn(),
-            },
-          ] as unknown as SlashCommand[];
-
-          const { result } = renderHook(() =>
-            useCompletion(
-              useTextBufferForTest(query),
-              testDirs,
-              testRootDir,
-              mockSlashCommands,
-              mockCommandContext,
-            ),
-          );
-
-          expect(result.current.suggestions).toHaveLength(0);
-        },
-      );
-
-      it('should not provide suggestions for a fully typed command that has no sub-commands or argument completion', async () => {
-        const slashCommands = [
-          {
-            name: 'clear',
-            description: 'Clear the screen',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/clear '),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toHaveLength(0);
-        expect(result.current.showSuggestions).toBe(false);
-      });
-
-      it('should not provide suggestions for an unknown command', async () => {
-        const slashCommands = [
-          {
-            name: 'help',
-            description: 'Show help',
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/unknown-command'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toHaveLength(0);
-        expect(result.current.showSuggestions).toBe(false);
-      });
-    });
-
-    describe('Sub-Commands', () => {
-      it('should suggest sub-commands for a parent command', async () => {
-        const slashCommands = [
-          {
-            name: 'memory',
-            description: 'Manage memory',
-            subCommands: [
-              {
-                name: 'show',
-                description: 'Show memory',
-              },
-              {
-                name: 'add',
-                description: 'Add to memory',
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/memory'), // Note: no trailing space
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        // Assert that suggestions for sub-commands are shown immediately
-        expect(result.current.suggestions).toHaveLength(2);
-        expect(result.current.suggestions).toEqual(
-          expect.arrayContaining([
-            { label: 'show', value: 'show', description: 'Show memory' },
-            { label: 'add', value: 'add', description: 'Add to memory' },
-          ]),
-        );
-        expect(result.current.showSuggestions).toBe(true);
-      });
-
-      it('should suggest all sub-commands when the query ends with the parent command and a space', async () => {
-        const slashCommands = [
-          {
-            name: 'memory',
-            description: 'Manage memory',
-            subCommands: [
-              {
-                name: 'show',
-                description: 'Show memory',
-              },
-              {
-                name: 'add',
-                description: 'Add to memory',
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/memory'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toHaveLength(2);
-        expect(result.current.suggestions).toEqual(
-          expect.arrayContaining([
-            { label: 'show', value: 'show', description: 'Show memory' },
-            { label: 'add', value: 'add', description: 'Add to memory' },
-          ]),
-        );
-      });
-
-      it('should filter sub-commands by prefix', async () => {
-        const slashCommands = [
-          {
-            name: 'memory',
-            description: 'Manage memory',
-            subCommands: [
-              {
-                name: 'show',
-                description: 'Show memory',
-              },
-              {
-                name: 'add',
-                description: 'Add to memory',
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/memory a'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toEqual([
-          { label: 'add', value: 'add', description: 'Add to memory' },
-        ]);
-      });
-
-      it('should provide no suggestions for an invalid sub-command', async () => {
-        const slashCommands = [
-          {
-            name: 'memory',
-            description: 'Manage memory',
-            subCommands: [
-              {
-                name: 'show',
-                description: 'Show memory',
-              },
-              {
-                name: 'add',
-                description: 'Add to memory',
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/memory dothisnow'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        expect(result.current.suggestions).toHaveLength(0);
-        expect(result.current.showSuggestions).toBe(false);
-      });
-    });
-
-    describe('Argument Completion', () => {
-      it('should call the command.completion function for argument suggestions', async () => {
-        const availableTags = [
-          'my-chat-tag-1',
-          'my-chat-tag-2',
-          'another-channel',
-        ];
-        const mockCompletionFn = vi
-          .fn()
-          .mockImplementation(
-            async (_context: CommandContext, partialArg: string) =>
-              availableTags.filter((tag) => tag.startsWith(partialArg)),
-          );
-
-        const slashCommands = [
-          {
-            name: 'chat',
-            description: 'Manage chat history',
-            subCommands: [
-              {
-                name: 'resume',
-                description: 'Resume a saved chat',
-                completion: mockCompletionFn,
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/chat resume my-ch'),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(mockCompletionFn).toHaveBeenCalledWith(
-          mockCommandContext,
-          'my-ch',
-        );
-
-        expect(result.current.suggestions).toEqual([
-          { label: 'my-chat-tag-1', value: 'my-chat-tag-1' },
-          { label: 'my-chat-tag-2', value: 'my-chat-tag-2' },
-        ]);
-      });
-
-      it('should call command.completion with an empty string when args start with a space', async () => {
-        const mockCompletionFn = vi
-          .fn()
-          .mockResolvedValue(['my-chat-tag-1', 'my-chat-tag-2', 'my-channel']);
-
-        const slashCommands = [
-          {
-            name: 'chat',
-            description: 'Manage chat history',
-            subCommands: [
-              {
-                name: 'resume',
-                description: 'Resume a saved chat',
-                completion: mockCompletionFn,
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/chat resume '),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(mockCompletionFn).toHaveBeenCalledWith(mockCommandContext, '');
-        expect(result.current.suggestions).toHaveLength(3);
-        expect(result.current.showSuggestions).toBe(true);
-      });
-
-      it('should handle completion function that returns null', async () => {
-        const completionFn = vi.fn().mockResolvedValue(null);
-        const slashCommands = [
-          {
-            name: 'chat',
-            description: 'Manage chat history',
-            subCommands: [
-              {
-                name: 'resume',
-                description: 'Resume a saved chat',
-                completion: completionFn,
-              },
-            ],
-          },
-        ] as unknown as SlashCommand[];
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('/chat resume '),
-            testDirs,
-            testRootDir,
-            slashCommands,
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(result.current.suggestions).toHaveLength(0);
-        expect(result.current.showSuggestions).toBe(false);
-      });
-    });
-  });
-
-  describe('File Path Completion (`@`)', () => {
-    describe('Basic Completion', () => {
-      it('should use glob for top-level @ completions when available', async () => {
-        await createTestFile('', 'src', 'index.ts');
-        await createTestFile('', 'derp', 'script.ts');
-        await createTestFile('', 'README.md');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@s'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(result.current.suggestions).toHaveLength(2);
-        expect(result.current.suggestions).toEqual(
-          expect.arrayContaining([
-            {
-              label: 'derp/script.ts',
-              value: 'derp/script.ts',
-            },
-            { label: 'src', value: 'src' },
-          ]),
-        );
-      });
-
-      it('should handle directory-specific completions with git filtering', async () => {
-        await createEmptyDir('.git');
-        await createTestFile('*.log', '.gitignore');
-        await createTestFile('', 'src', 'component.tsx');
-        await createTestFile('', 'src', 'temp.log');
-        await createTestFile('', 'src', 'index.ts');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@src/comp'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        // Should filter out .log files but include matching .tsx files
-        expect(result.current.suggestions).toEqual([
-          { label: 'component.tsx', value: 'component.tsx' },
-        ]);
-      });
-
-      it('should include dotfiles in glob search when input starts with a dot', async () => {
-        await createTestFile('', '.env');
-        await createTestFile('', '.gitignore');
-        await createTestFile('', 'src', 'index.ts');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@.'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(result.current.suggestions).toEqual([
-          { label: '.env', value: '.env' },
-          { label: '.gitignore', value: '.gitignore' },
-        ]);
-      });
-    });
-
-    describe('Configuration-based Behavior', () => {
-      it('should not perform recursive search when disabled in config', async () => {
-        const mockConfigNoRecursive = {
-          ...mockConfig,
-          getEnableRecursiveFileSearch: vi.fn(() => false),
-        } as unknown as Config;
-
-        await createEmptyDir('data');
-        await createEmptyDir('dist');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@d'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfigNoRecursive,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        expect(result.current.suggestions).toEqual([
-          { label: 'data/', value: 'data/' },
-          { label: 'dist/', value: 'dist/' },
-        ]);
-      });
-
-      it('should work without config (fallback behavior)', async () => {
-        await createEmptyDir('src');
-        await createEmptyDir('node_modules');
-        await createTestFile('', 'README.md');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            undefined,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        // Without config, should include all files
-        expect(result.current.suggestions).toHaveLength(3);
-        expect(result.current.suggestions).toEqual(
-          expect.arrayContaining([
-            { label: 'src/', value: 'src/' },
-            { label: 'node_modules/', value: 'node_modules/' },
-            { label: 'README.md', value: 'README.md' },
-          ]),
-        );
-      });
-
-      it('should handle git discovery service initialization failure gracefully', async () => {
-        // Intentionally don't create a .git directory to cause an initialization failure.
-        await createEmptyDir('src');
-        await createTestFile('', 'README.md');
-
-        const consoleSpy = vi
-          .spyOn(console, 'warn')
-          .mockImplementation(() => {});
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        // Since we use centralized service, initialization errors are handled at config level
-        // This test should verify graceful fallback behavior
-        expect(result.current.suggestions.length).toBeGreaterThanOrEqual(0);
-        // Should still show completions even if git discovery fails
-        expect(result.current.suggestions.length).toBeGreaterThan(0);
-
-        consoleSpy.mockRestore();
-      });
-    });
-
-    describe('Git-Aware Filtering', () => {
-      it('should filter git-ignored entries from @ completions', async () => {
-        await createEmptyDir('.git');
-        await createTestFile('dist', '.gitignore');
-        await createEmptyDir('data');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@d'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        // Wait for async operations to complete
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150)); // Account for debounce
-        });
-
-        expect(result.current.suggestions).toEqual(
-          expect.arrayContaining([{ label: 'data', value: 'data' }]),
-        );
-        expect(result.current.showSuggestions).toBe(true);
-      });
-
-      it('should filter git-ignored directories from @ completions', async () => {
-        await createEmptyDir('.git');
-        await createTestFile('node_modules\ndist\n.env', '.gitignore');
-        // gitignored entries
-        await createEmptyDir('node_modules');
-        await createEmptyDir('dist');
-        await createTestFile('', '.env');
-
-        // visible
-        await createEmptyDir('src');
-        await createTestFile('', 'README.md');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        // Wait for async operations to complete
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150)); // Account for debounce
-        });
-
-        expect(result.current.suggestions).toEqual([
-          { label: 'README.md', value: 'README.md' },
-          { label: 'src/', value: 'src/' },
-        ]);
-        expect(result.current.showSuggestions).toBe(true);
-      });
-
-      it('should handle recursive search with git-aware filtering', async () => {
-        await createEmptyDir('.git');
-        await createTestFile('node_modules/\ntemp/', '.gitignore');
-        await createTestFile('', 'data', 'test.txt');
-        await createEmptyDir('dist');
-        await createEmptyDir('node_modules');
-        await createTestFile('', 'src', 'index.ts');
-        await createEmptyDir('src', 'components');
-        await createTestFile('', 'temp', 'temp.log');
-
-        const { result } = renderHook(() =>
-          useCompletion(
-            useTextBufferForTest('@t'),
-            testDirs,
-            testRootDir,
-            [],
-            mockCommandContext,
-            mockConfig,
-          ),
-        );
-
-        await act(async () => {
-          await new Promise((resolve) => setTimeout(resolve, 150));
-        });
-
-        // Should not include anything from node_modules or dist
-        const suggestionLabels = result.current.suggestions.map((s) => s.label);
-        expect(suggestionLabels).not.toContain('temp/');
-        expect(suggestionLabels).not.toContain('node_modules/');
-      });
-    });
-  });
-
-  describe('handleAutocomplete', () => {
-    it('should complete a partial command', () => {
-      const slashCommands = [
-        {
-          name: 'memory',
-          description: 'Manage memory',
-          subCommands: [
-            {
-              name: 'show',
-              description: 'Show memory',
-            },
-            {
-              name: 'add',
-              description: 'Add to memory',
-            },
-          ],
-        },
-      ] as unknown as SlashCommand[];
-
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest('/mem');
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          slashCommands,
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      expect(result.current.suggestions.map((s) => s.value)).toEqual([
-        'memory',
-      ]);
-
-      act(() => {
-        result.current.handleAutocomplete(0);
-      });
-
-      expect(result.current.textBuffer.text).toBe('/memory ');
-    });
-
-    it('should append a sub-command when the parent is complete', () => {
-      const slashCommands = [
-        {
-          name: 'memory',
-          description: 'Manage memory',
-          subCommands: [
-            {
-              name: 'show',
-              description: 'Show memory',
-            },
-            {
-              name: 'add',
-              description: 'Add to memory',
-            },
-          ],
-        },
-      ] as unknown as SlashCommand[];
-
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest('/memory');
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          slashCommands,
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      // Suggestions are populated by useEffect
-      expect(result.current.suggestions.map((s) => s.value)).toEqual([
-        'show',
-        'add',
-      ]);
-
-      act(() => {
-        result.current.handleAutocomplete(1); // index 1 is 'add'
-      });
-
-      expect(result.current.textBuffer.text).toBe('/memory add ');
-    });
-
-    it('should complete a command with an alternative name', () => {
-      const slashCommands = [
-        {
-          name: 'memory',
-          description: 'Manage memory',
-          subCommands: [
-            {
-              name: 'show',
-              description: 'Show memory',
-            },
-            {
-              name: 'add',
-              description: 'Add to memory',
-            },
-          ],
-        },
-      ] as unknown as SlashCommand[];
-
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest('/?');
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          slashCommands,
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      result.current.suggestions.push({
-        label: 'help',
-        value: 'help',
-        description: 'Show help',
-      });
-
-      act(() => {
-        result.current.handleAutocomplete(0);
-      });
-
-      expect(result.current.textBuffer.text).toBe('/help ');
-    });
-
-    it('should complete a file path', () => {
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest('@src/fi');
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          [],
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      result.current.suggestions.push({
-        label: 'file1.txt',
-        value: 'file1.txt',
-      });
-
-      act(() => {
-        result.current.handleAutocomplete(0);
-      });
-
-      expect(result.current.textBuffer.text).toBe('@src/file1.txt');
-    });
-
-    it('should complete a file path when cursor is not at the end of the line', () => {
-      const text = '@src/fi le.txt';
-      const cursorOffset = 7; // after "i"
-
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest(text, cursorOffset);
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          [],
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      result.current.suggestions.push({
-        label: 'file1.txt',
-        value: 'file1.txt',
-      });
-
-      act(() => {
-        result.current.handleAutocomplete(0);
-      });
-
-      expect(result.current.textBuffer.text).toBe('@src/file1.txt le.txt');
-    });
-
-    it('should complete the correct file path with multiple @-commands', () => {
-      const text = '@file1.txt @src/fi';
-
-      const { result } = renderHook(() => {
-        const textBuffer = useTextBufferForTest(text);
-        const completion = useCompletion(
-          textBuffer,
-          testDirs,
-          testRootDir,
-          [],
-          mockCommandContext,
-          mockConfig,
-        );
-        return { ...completion, textBuffer };
-      });
-
-      result.current.suggestions.push({
-        label: 'file2.txt',
-        value: 'file2.txt',
-      });
-
-      act(() => {
-        result.current.handleAutocomplete(0);
-      });
-
-      expect(result.current.textBuffer.text).toBe('@file1.txt @src/file2.txt');
-    });
-  });
-});