mirror of
https://github.com/google-gemini/gemini-cli.git
synced 2026-04-01 00:40:42 -07:00
feat: implement file system reversion utilities for rewind (#15715)
This commit is contained in:
473
packages/cli/src/ui/utils/rewindFileOps.test.ts
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473
packages/cli/src/ui/utils/rewindFileOps.test.ts
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/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
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import {
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calculateTurnStats,
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calculateRewindImpact,
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revertFileChanges,
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} from './rewindFileOps.js';
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import type {
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ConversationRecord,
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MessageRecord,
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ToolCallRecord,
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} from '@google/gemini-cli-core';
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import { coreEvents } from '@google/gemini-cli-core';
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import fs from 'node:fs/promises';
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import path from 'node:path';
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vi.mock('node:fs/promises');
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vi.mock('@google/gemini-cli-core', async (importOriginal) => {
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const actual =
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await importOriginal<typeof import('@google/gemini-cli-core')>();
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return {
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...actual,
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coreEvents: {
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emitFeedback: vi.fn(),
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},
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};
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});
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describe('rewindFileOps', () => {
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const mockConversation: ConversationRecord = {
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sessionId: 'test-session',
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projectHash: 'hash',
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startTime: 'time',
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lastUpdated: 'time',
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messages: [],
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};
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beforeEach(() => {
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vi.clearAllMocks();
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});
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afterEach(() => {
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vi.restoreAllMocks();
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});
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describe('calculateTurnStats', () => {
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it('returns null if no edits found after user message', () => {
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const userMsg: MessageRecord = {
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type: 'user',
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content: 'hello',
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id: '1',
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timestamp: '1',
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};
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const geminiMsg: MessageRecord = {
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type: 'gemini',
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content: 'hi',
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id: '2',
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timestamp: '2',
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};
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mockConversation.messages = [userMsg, geminiMsg];
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const stats = calculateTurnStats(mockConversation, userMsg);
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expect(stats).toBeNull();
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});
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it('calculates stats for single turn correctly', () => {
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const userMsg: MessageRecord = {
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type: 'user',
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content: 'hello',
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id: '1',
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timestamp: '1',
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};
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file1.ts',
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filePath: '/file1.ts',
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originalContent: 'old',
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newContent: 'new',
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isNewFile: false,
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diffStat: {
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model_added_lines: 5,
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model_removed_lines: 2,
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user_added_lines: 0,
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user_removed_lines: 0,
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model_added_chars: 100,
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model_removed_chars: 20,
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user_added_chars: 0,
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user_removed_chars: 0,
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},
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},
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},
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] as unknown as ToolCallRecord[],
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};
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const userMsg2: MessageRecord = {
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type: 'user',
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content: 'next',
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id: '3',
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timestamp: '3',
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};
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mockConversation.messages = [userMsg, toolMsg, userMsg2];
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const stats = calculateTurnStats(mockConversation, userMsg);
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expect(stats).toEqual({
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addedLines: 5,
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removedLines: 2,
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fileCount: 1,
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});
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});
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});
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describe('calculateRewindImpact', () => {
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it('calculates cumulative stats across multiple turns', () => {
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const userMsg1: MessageRecord = {
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type: 'user',
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content: 'start',
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id: '1',
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timestamp: '1',
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};
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const toolMsg1: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file1.ts',
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filePath: '/file1.ts',
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fileDiff: 'diff1',
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originalContent: 'old',
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newContent: 'new',
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isNewFile: false,
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diffStat: {
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model_added_lines: 5,
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model_removed_lines: 2,
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user_added_lines: 0,
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user_removed_lines: 0,
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model_added_chars: 0,
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model_removed_chars: 0,
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user_added_chars: 0,
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user_removed_chars: 0,
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},
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},
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},
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] as unknown as ToolCallRecord[],
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};
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const userMsg2: MessageRecord = {
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type: 'user',
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content: 'next',
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id: '3',
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timestamp: '3',
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};
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const toolMsg2: MessageRecord = {
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type: 'gemini',
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id: '4',
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timestamp: '4',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-2',
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status: 'success',
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timestamp: '4',
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args: {},
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resultDisplay: {
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fileName: 'file2.ts',
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filePath: '/file2.ts',
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fileDiff: 'diff2',
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originalContent: 'old',
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newContent: 'new',
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isNewFile: false,
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diffStat: {
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model_added_lines: 3,
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model_removed_lines: 1,
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user_added_lines: 0,
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user_removed_lines: 0,
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model_added_chars: 0,
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model_removed_chars: 0,
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user_added_chars: 0,
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user_removed_chars: 0,
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},
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [userMsg1, toolMsg1, userMsg2, toolMsg2];
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const stats = calculateRewindImpact(mockConversation, userMsg1);
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expect(stats).toEqual({
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addedLines: 8, // 5 + 3
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removedLines: 3, // 2 + 1
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fileCount: 2,
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details: [
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{ fileName: 'file1.ts', diff: 'diff1' },
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{ fileName: 'file2.ts', diff: 'diff2' },
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],
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});
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});
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});
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describe('revertFileChanges', () => {
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const mockDiffStat = {
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model_added_lines: 1,
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model_removed_lines: 1,
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user_added_lines: 0,
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user_removed_lines: 0,
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model_added_chars: 1,
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model_removed_chars: 1,
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user_added_chars: 0,
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user_removed_chars: 0,
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};
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it('does nothing if message not found', async () => {
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mockConversation.messages = [];
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await revertFileChanges(mockConversation, 'missing-id');
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expect(fs.writeFile).not.toHaveBeenCalled();
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});
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it('reverts exact match', async () => {
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const userMsg: MessageRecord = {
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type: 'user',
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content: 'start',
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id: '1',
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timestamp: '1',
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};
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file.txt',
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filePath: path.resolve('/root/file.txt'),
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originalContent: 'old',
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newContent: 'new',
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isNewFile: false,
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diffStat: mockDiffStat,
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [userMsg, toolMsg];
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vi.mocked(fs.readFile).mockResolvedValue('new');
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await revertFileChanges(mockConversation, '1');
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expect(fs.writeFile).toHaveBeenCalledWith(
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path.resolve('/root/file.txt'),
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'old',
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);
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});
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it('deletes new file on revert', async () => {
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const userMsg: MessageRecord = {
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type: 'user',
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content: 'start',
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id: '1',
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timestamp: '1',
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};
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'write_file',
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id: 'tool-call-2',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file.txt',
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filePath: path.resolve('/root/file.txt'),
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originalContent: null,
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newContent: 'content',
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isNewFile: true,
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diffStat: mockDiffStat,
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [userMsg, toolMsg];
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vi.mocked(fs.readFile).mockResolvedValue('content');
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await revertFileChanges(mockConversation, '1');
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expect(fs.unlink).toHaveBeenCalledWith(path.resolve('/root/file.txt'));
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});
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it('handles smart revert (patching) successfully', async () => {
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const original = Array.from(
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{ length: 20 },
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(_, i) => `line${i + 1}`,
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).join('\n');
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// Agent changes line 2
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const agentModifiedLines = original.split('\n');
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agentModifiedLines[1] = 'line2-modified';
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const agentModified = agentModifiedLines.join('\n');
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// User changes line 18 (far away from line 2)
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const userModifiedLines = [...agentModifiedLines];
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userModifiedLines[17] = 'line18-modified';
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const userModified = userModifiedLines.join('\n');
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file.txt',
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filePath: path.resolve('/root/file.txt'),
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originalContent: original,
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newContent: agentModified,
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isNewFile: false,
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diffStat: mockDiffStat,
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [
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{ type: 'user', content: 'start', id: '1', timestamp: '1' },
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toolMsg,
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];
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vi.mocked(fs.readFile).mockResolvedValue(userModified);
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await revertFileChanges(mockConversation, '1');
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// Expect line 2 to be reverted to original, but line 18 to keep user modification
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const expectedLines = original.split('\n');
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expectedLines[17] = 'line18-modified';
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const expectedContent = expectedLines.join('\n');
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expect(fs.writeFile).toHaveBeenCalledWith(
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path.resolve('/root/file.txt'),
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expectedContent,
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);
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});
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it('emits warning on smart revert failure', async () => {
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const original = 'line1\nline2\nline3';
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const agentModified = 'line1\nline2-modified\nline3';
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// User modification conflicts with the agent's change.
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const userModified = 'line1\nline2-usermodified\nline3';
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file.txt',
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filePath: path.resolve('/root/file.txt'),
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originalContent: original,
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newContent: agentModified,
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isNewFile: false,
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diffStat: mockDiffStat,
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [
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{ type: 'user', content: 'start', id: '1', timestamp: '1' },
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toolMsg,
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];
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vi.mocked(fs.readFile).mockResolvedValue(userModified);
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await revertFileChanges(mockConversation, '1');
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expect(fs.writeFile).not.toHaveBeenCalled();
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expect(coreEvents.emitFeedback).toHaveBeenCalledWith(
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'warning',
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expect.stringContaining('Smart revert for file.txt failed'),
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);
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});
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it('emits error if fs.readFile fails with a generic error', async () => {
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const toolMsg: MessageRecord = {
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type: 'gemini',
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id: '2',
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timestamp: '2',
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content: '',
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toolCalls: [
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{
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name: 'replace',
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id: 'tool-call-1',
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status: 'success',
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timestamp: '2',
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args: {},
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resultDisplay: {
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fileName: 'file.txt',
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filePath: path.resolve('/root/file.txt'),
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originalContent: 'old',
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newContent: 'new',
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isNewFile: false,
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diffStat: mockDiffStat,
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},
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},
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] as unknown as ToolCallRecord[],
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};
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mockConversation.messages = [
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{ type: 'user', content: 'start', id: '1', timestamp: '1' },
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toolMsg,
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];
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// Simulate a generic file read error
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vi.mocked(fs.readFile).mockRejectedValue(new Error('Permission denied'));
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await revertFileChanges(mockConversation, '1');
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expect(fs.writeFile).not.toHaveBeenCalled();
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expect(coreEvents.emitFeedback).toHaveBeenCalledWith(
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'error',
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'Error reading file.txt during revert: Permission denied',
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expect.any(Error),
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);
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});
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});
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});
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Reference in New Issue
Block a user