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fix: properly report tool errors in telemetry (#5688) 

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
This commit is contained in:
Akhil Appana 2025-08-08 04:33:42 -07:00 committed by GitHub
parent 5ab184fcaf
commit f5e0f16157
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8 changed files with 607 additions and 230 deletions
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369
packages/core/src/tools/read-file.test.ts
View File

@ -6,6 +6,7 @@
import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { ReadFileTool, ReadFileToolParams } from './read-file.js';
import { ToolErrorType } from './tool-error.js';
import path from 'path';
import os from 'os';
import fs from 'fs';
@ -47,81 +48,92 @@ describe('ReadFileTool', () => {
absolute_path: path.join(tempRootDir, 'test.txt'),
};
const result = tool.build(params);
expect(result).not.toBeTypeOf('string');
expect(typeof result).toBe('object');
expect(
(result as ToolInvocation<ReadFileToolParams, ToolResult>).params,
).toEqual(params);
expect(typeof result).not.toBe('string');
});
it('should return an invocation for valid params with offset and limit', () => {
it('should throw error if file path is relative', () => {
const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
offset: 0,
limit: 10,
absolute_path: 'relative/path.txt',
};
const result = tool.build(params);
expect(result).not.toBeTypeOf('string');
});
it('should throw error for relative path', () => {
const params: ReadFileToolParams = { absolute_path: 'test.txt' };
expect(() => tool.build(params)).toThrow(
`File path must be absolute, but was relative: test.txt. You must provide an absolute path.`,
'File path must be absolute, but was relative: relative/path.txt. You must provide an absolute path.',
);
});
it('should throw error for path outside root', () => {
const outsidePath = path.resolve(os.tmpdir(), 'outside-root.txt');
const params: ReadFileToolParams = { absolute_path: outsidePath };
it('should throw error if path is outside root', () => {
const params: ReadFileToolParams = {
absolute_path: '/outside/root.txt',
};
expect(() => tool.build(params)).toThrow(
'File path must be within one of the workspace directories',
/File path must be within one of the workspace directories/,
);
});
it('should throw error for negative offset', () => {
it('should throw error if offset is negative', () => {
const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
offset: -1,
limit: 10,
};
expect(() => tool.build(params)).toThrow(
'Offset must be a non-negative number',
);
});
it('should throw error for non-positive limit', () => {
const paramsZero: ReadFileToolParams = {
it('should throw error if limit is zero or negative', () => {
const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
offset: 0,
limit: 0,
};
expect(() => tool.build(paramsZero)).toThrow(
'Limit must be a positive number',
);
const paramsNegative: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
offset: 0,
limit: -5,
};
expect(() => tool.build(paramsNegative)).toThrow(
'Limit must be a positive number',
);
});
it('should throw error for schema validation failure (e.g. missing path)', () => {
const params = { offset: 0 } as unknown as ReadFileToolParams;
expect(() => tool.build(params)).toThrow(
`params must have required property 'absolute_path'`,
'Limit must be a positive number',
);
});
});
describe('ToolInvocation', () => {
describe('getDescription', () => {
it('should return a shortened, relative path', () => {
const filePath = path.join(tempRootDir, 'sub', 'dir', 'file.txt');
const params: ReadFileToolParams = { absolute_path: filePath };
it('should return relative path without limit/offset', () => {
const subDir = path.join(tempRootDir, 'sub', 'dir');
const params: ReadFileToolParams = {
absolute_path: path.join(subDir, 'file.txt'),
};
const invocation = tool.build(params);
expect(typeof invocation).not.toBe('string');
expect(
(
invocation as ToolInvocation<ReadFileToolParams, ToolResult>
).getDescription(),
).toBe(path.join('sub', 'dir', 'file.txt'));
});
it('should return shortened path when file path is deep', () => {
const deepPath = path.join(
tempRootDir,
'very',
'deep',
'directory',
'structure',
'that',
'exceeds',
'the',
'normal',
'limit',
'file.txt',
);
const params: ReadFileToolParams = { absolute_path: deepPath };
const invocation = tool.build(params);
expect(typeof invocation).not.toBe('string');
const desc = (
invocation as ToolInvocation<ReadFileToolParams, ToolResult>
).getDescription();
expect(desc).toContain('...');
expect(desc).toContain('file.txt');
});
it('should handle non-normalized file paths correctly', () => {
const subDir = path.join(tempRootDir, 'sub', 'dir');
const params: ReadFileToolParams = {
absolute_path: path.join(subDir, '..', 'dir', 'file.txt'),
};
const invocation = tool.build(params);
expect(typeof invocation).not.toBe('string');
expect(
@ -152,9 +164,15 @@ describe('ReadFileTool', () => {
ToolResult
>;
expect(await invocation.execute(abortSignal)).toEqual({
llmContent: `File not found: ${filePath}`,
const result = await invocation.execute(abortSignal);
expect(result).toEqual({
llmContent:
'Could not read file because no file was found at the specified path.',
returnDisplay: 'File not found.',
error: {
message: `File not found: ${filePath}`,
type: ToolErrorType.FILE_NOT_FOUND,
},
});
});
@ -174,36 +192,50 @@ describe('ReadFileTool', () => {
});
});
it('should return success result for an image file', async () => {
// A minimal 1x1 transparent PNG file.
const pngContent = Buffer.from([
137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0,
1, 0, 0, 0, 1, 8, 6, 0, 0, 0, 31, 21, 196, 137, 0, 0, 0, 10, 73, 68,
65, 84, 120, 156, 99, 0, 1, 0, 0, 5, 0, 1, 13, 10, 45, 180, 0, 0, 0,
0, 73, 69, 78, 68, 174, 66, 96, 130,
]);
const filePath = path.join(tempRootDir, 'image.png');
await fsp.writeFile(filePath, pngContent);
it('should return error if path is a directory', async () => {
const dirPath = path.join(tempRootDir, 'directory');
await fsp.mkdir(dirPath);
const params: ReadFileToolParams = { absolute_path: dirPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result).toEqual({
llmContent:
'Could not read file because the provided path is a directory, not a file.',
returnDisplay: 'Path is a directory.',
error: {
message: `Path is a directory, not a file: ${dirPath}`,
type: ToolErrorType.INVALID_TOOL_PARAMS,
},
});
});
it('should return error for a file that is too large', async () => {
const filePath = path.join(tempRootDir, 'largefile.txt');
// 21MB of content exceeds 20MB limit
const largeContent = 'x'.repeat(21 * 1024 * 1024);
await fsp.writeFile(filePath, largeContent, 'utf-8');
const params: ReadFileToolParams = { absolute_path: filePath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
expect(await invocation.execute(abortSignal)).toEqual({
llmContent: {
inlineData: {
mimeType: 'image/png',
data: pngContent.toString('base64'),
},
},
returnDisplay: `Read image file: image.png`,
});
const result = await invocation.execute(abortSignal);
expect(result).toHaveProperty('error');
expect(result.error?.type).toBe(ToolErrorType.FILE_TOO_LARGE);
expect(result.error?.message).toContain(
'File size exceeds the 20MB limit',
);
});
it('should treat a non-image file with image extension as an image', async () => {
const filePath = path.join(tempRootDir, 'fake-image.png');
const fileContent = 'This is not a real png.';
it('should handle text file with lines exceeding maximum length', async () => {
const filePath = path.join(tempRootDir, 'longlines.txt');
const longLine = 'a'.repeat(2500); // Exceeds MAX_LINE_LENGTH_TEXT_FILE (2000)
const fileContent = `Short line\n${longLine}\nAnother short line`;
await fsp.writeFile(filePath, fileContent, 'utf-8');
const params: ReadFileToolParams = { absolute_path: filePath };
const invocation = tool.build(params) as ToolInvocation<
@ -211,23 +243,129 @@ describe('ReadFileTool', () => {
ToolResult
>;
expect(await invocation.execute(abortSignal)).toEqual({
llmContent: {
inlineData: {
mimeType: 'image/png',
data: Buffer.from(fileContent).toString('base64'),
},
},
returnDisplay: `Read image file: fake-image.png`,
});
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toContain(
'IMPORTANT: The file content has been truncated',
);
expect(result.llmContent).toContain('--- FILE CONTENT (truncated) ---');
expect(result.returnDisplay).toContain('some lines were shortened');
});
it('should return a structured message when a slice of a text file is read', async () => {
it('should handle image file and return appropriate content', async () => {
const imagePath = path.join(tempRootDir, 'image.png');
// Minimal PNG header
const pngHeader = Buffer.from([
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a,
]);
await fsp.writeFile(imagePath, pngHeader);
const params: ReadFileToolParams = { absolute_path: imagePath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toEqual({
inlineData: {
data: pngHeader.toString('base64'),
mimeType: 'image/png',
},
});
expect(result.returnDisplay).toBe('Read image file: image.png');
});
it('should handle PDF file and return appropriate content', async () => {
const pdfPath = path.join(tempRootDir, 'document.pdf');
// Minimal PDF header
const pdfHeader = Buffer.from('%PDF-1.4');
await fsp.writeFile(pdfPath, pdfHeader);
const params: ReadFileToolParams = { absolute_path: pdfPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toEqual({
inlineData: {
data: pdfHeader.toString('base64'),
mimeType: 'application/pdf',
},
});
expect(result.returnDisplay).toBe('Read pdf file: document.pdf');
});
it('should handle binary file and skip content', async () => {
const binPath = path.join(tempRootDir, 'binary.bin');
// Binary data with null bytes
const binaryData = Buffer.from([0x00, 0xff, 0x00, 0xff]);
await fsp.writeFile(binPath, binaryData);
const params: ReadFileToolParams = { absolute_path: binPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toBe(
'Cannot display content of binary file: binary.bin',
);
expect(result.returnDisplay).toBe('Skipped binary file: binary.bin');
});
it('should handle SVG file as text', async () => {
const svgPath = path.join(tempRootDir, 'image.svg');
const svgContent = '<svg><circle cx="50" cy="50" r="40"/></svg>';
await fsp.writeFile(svgPath, svgContent, 'utf-8');
const params: ReadFileToolParams = { absolute_path: svgPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toBe(svgContent);
expect(result.returnDisplay).toBe('Read SVG as text: image.svg');
});
it('should handle large SVG file', async () => {
const svgPath = path.join(tempRootDir, 'large.svg');
// Create SVG content larger than 1MB
const largeContent = '<svg>' + 'x'.repeat(1024 * 1024 + 1) + '</svg>';
await fsp.writeFile(svgPath, largeContent, 'utf-8');
const params: ReadFileToolParams = { absolute_path: svgPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toBe(
'Cannot display content of SVG file larger than 1MB: large.svg',
);
expect(result.returnDisplay).toBe(
'Skipped large SVG file (>1MB): large.svg',
);
});
it('should handle empty file', async () => {
const emptyPath = path.join(tempRootDir, 'empty.txt');
await fsp.writeFile(emptyPath, '', 'utf-8');
const params: ReadFileToolParams = { absolute_path: emptyPath };
const invocation = tool.build(params) as ToolInvocation<
ReadFileToolParams,
ToolResult
>;
const result = await invocation.execute(abortSignal);
expect(result.llmContent).toBe('');
expect(result.returnDisplay).toBe('');
});
it('should support offset and limit for text files', async () => {
const filePath = path.join(tempRootDir, 'paginated.txt');
const fileContent = Array.from(
{ length: 20 },
(_, i) => `Line ${i + 1}`,
).join('\n');
const lines = Array.from({ length: 20 }, (_, i) => `Line ${i + 1}`);
const fileContent = lines.join('\n');
await fsp.writeFile(filePath, fileContent, 'utf-8');
const params: ReadFileToolParams = {
@ -241,18 +379,15 @@ describe('ReadFileTool', () => {
>;
const result = await invocation.execute(abortSignal);
const expectedLlmContent = `
IMPORTANT: The file content has been truncated.
Status: Showing lines 6-8 of 20 total lines.
Action: To read more of the file, you can use the 'offset' and 'limit' parameters in a subsequent 'read_file' call. For example, to read the next section of the file, use offset: 8.
--- FILE CONTENT (truncated) ---
Line 6
Line 7
Line 8`;
expect(result.llmContent).toEqual(expectedLlmContent);
expect(result.llmContent).toContain(
'IMPORTANT: The file content has been truncated',
);
expect(result.llmContent).toContain(
'Status: Showing lines 6-8 of 20 total lines',
);
expect(result.llmContent).toContain('Line 6');
expect(result.llmContent).toContain('Line 7');
expect(result.llmContent).toContain('Line 8');
expect(result.returnDisplay).toBe(
'Read lines 6-8 of 20 from paginated.txt',
);
@ -276,47 +411,27 @@ Line 8`;
expect(() => tool.build(params)).toThrow(expectedError);
});
it('should throw error if path is in an ignored directory', async () => {
it('should throw error if file is in an ignored directory', async () => {
const ignoredDirPath = path.join(tempRootDir, 'ignored');
await fsp.mkdir(ignoredDirPath);
const filePath = path.join(ignoredDirPath, 'somefile.txt');
await fsp.writeFile(filePath, 'content', 'utf-8');
await fsp.mkdir(ignoredDirPath, { recursive: true });
const ignoredFilePath = path.join(ignoredDirPath, 'file.txt');
await fsp.writeFile(ignoredFilePath, 'content', 'utf-8');
const params: ReadFileToolParams = {
absolute_path: filePath,
absolute_path: ignoredFilePath,
};
const expectedError = `File path '${filePath}' is ignored by .geminiignore pattern(s).`;
const expectedError = `File path '${ignoredFilePath}' is ignored by .geminiignore pattern(s).`;
expect(() => tool.build(params)).toThrow(expectedError);
});
});
});
});
describe('workspace boundary validation', () => {
it('should validate paths are within workspace root', () => {
it('should allow reading non-ignored files', async () => {
const allowedFilePath = path.join(tempRootDir, 'allowed.txt');
await fsp.writeFile(allowedFilePath, 'content', 'utf-8');
const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'file.txt'),
absolute_path: allowedFilePath,
};
expect(() => tool.build(params)).not.toThrow();
const invocation = tool.build(params);
expect(typeof invocation).not.toBe('string');
});
it('should reject paths outside workspace root', () => {
const params: ReadFileToolParams = {
absolute_path: '/etc/passwd',
};
expect(() => tool.build(params)).toThrow(
'File path must be within one of the workspace directories',
);
});
it('should provide clear error message with workspace directories', () => {
const outsidePath = path.join(os.tmpdir(), 'outside-workspace.txt');
const params: ReadFileToolParams = {
absolute_path: outsidePath,
};
expect(() => tool.build(params)).toThrow(
'File path must be within one of the workspace directories',
);
});
});
});

41
packages/core/src/tools/read-file.ts
View File

@ -15,6 +15,7 @@ import {
ToolLocation,
ToolResult,
} from './tools.js';
import { ToolErrorType } from './tool-error.js';
import { PartUnion, Type } from '@google/genai';
import {
processSingleFileContent,
@ -78,9 +79,45 @@ class ReadFileToolInvocation extends BaseToolInvocation<
);
if (result.error) {
// Map error messages to ToolErrorType
let errorType: ToolErrorType;
let llmContent: string;
// Check error message patterns to determine error type
if (
result.error.includes('File not found') ||
result.error.includes('does not exist') ||
result.error.includes('ENOENT')
) {
errorType = ToolErrorType.FILE_NOT_FOUND;
llmContent =
'Could not read file because no file was found at the specified path.';
} else if (
result.error.includes('is a directory') ||
result.error.includes('EISDIR')
) {
errorType = ToolErrorType.INVALID_TOOL_PARAMS;
llmContent =
'Could not read file because the provided path is a directory, not a file.';
} else if (
result.error.includes('too large') ||
result.error.includes('File size exceeds')
) {
errorType = ToolErrorType.FILE_TOO_LARGE;
llmContent = `Could not read file. ${result.error}`;
} else {
// Other read errors map to READ_CONTENT_FAILURE
errorType = ToolErrorType.READ_CONTENT_FAILURE;
llmContent = `Could not read file. ${result.error}`;
}
return {
llmContent: result.error, // The detailed error for LLM
returnDisplay: result.returnDisplay || 'Error reading file', // User-friendly error
llmContent,
returnDisplay: result.returnDisplay || 'Error reading file',
error: {
message: result.error,
type: errorType,
},
};
}

37
packages/core/src/tools/shell.test.ts
View File

@ -25,6 +25,7 @@ vi.mock('../utils/summarizer.js');
import { isCommandAllowed } from '../utils/shell-utils.js';
import { ShellTool } from './shell.js';
import { ToolErrorType } from './tool-error.js';
import { type Config } from '../config/config.js';
import {
type ShellExecutionResult,
@ -203,6 +204,42 @@ describe('ShellTool', () => {
expect(result.llmContent).not.toContain('pgrep');
});
it('should return error with error property for invalid parameters', async () => {
const result = await shellTool.execute(
{ command: '' }, // Empty command is invalid
mockAbortSignal,
);
expect(result.llmContent).toContain(
'Could not execute command due to invalid parameters:',
);
expect(result.returnDisplay).toBe('Command cannot be empty.');
expect(result.error).toEqual({
message: 'Command cannot be empty.',
type: ToolErrorType.INVALID_TOOL_PARAMS,
});
});
it('should return error with error property for invalid directory', async () => {
vi.mocked(fs.existsSync).mockReturnValue(false);
const result = await shellTool.execute(
{ command: 'ls', directory: 'nonexistent' },
mockAbortSignal,
);
expect(result.llmContent).toContain(
'Could not execute command due to invalid parameters:',
);
expect(result.returnDisplay).toBe(
"Directory 'nonexistent' is not a registered workspace directory.",
);
expect(result.error).toEqual({
message:
"Directory 'nonexistent' is not a registered workspace directory.",
type: ToolErrorType.INVALID_TOOL_PARAMS,
});
});
it('should summarize output when configured', async () => {
(mockConfig.getSummarizeToolOutputConfig as Mock).mockReturnValue({
[shellTool.name]: { tokenBudget: 1000 },

7
packages/core/src/tools/shell.ts
View File

@ -17,6 +17,7 @@ import {
ToolConfirmationOutcome,
Icon,
} from './tools.js';
import { ToolErrorType } from './tool-error.js';
import { Type } from '@google/genai';
import { SchemaValidator } from '../utils/schemaValidator.js';
import { getErrorMessage } from '../utils/errors.js';
@ -186,8 +187,12 @@ export class ShellTool extends BaseTool<ShellToolParams, ToolResult> {
});
if (validationError) {
return {
llmContent: validationError,
llmContent: `Could not execute command due to invalid parameters: ${validationError}`,
returnDisplay: validationError,
error: {
message: validationError,
type: ToolErrorType.INVALID_TOOL_PARAMS,
},
};
}

4
packages/core/src/tools/tool-error.ts
View File

@ -19,6 +19,10 @@ export enum ToolErrorType {
FILE_WRITE_FAILURE = 'file_write_failure',
READ_CONTENT_FAILURE = 'read_content_failure',
ATTEMPT_TO_CREATE_EXISTING_FILE = 'attempt_to_create_existing_file',
FILE_TOO_LARGE = 'file_too_large',
PERMISSION_DENIED = 'permission_denied',
NO_SPACE_LEFT = 'no_space_left',
TARGET_IS_DIRECTORY = 'target_is_directory',
// Edit-specific Errors
EDIT_PREPARATION_FAILURE = 'edit_preparation_failure',

137
packages/core/src/tools/write-file.test.ts
View File

@ -14,6 +14,7 @@ import {
type Mocked,
} from 'vitest';
import { WriteFileTool, WriteFileToolParams } from './write-file.js';
import { ToolErrorType } from './tool-error.js';
import {
FileDiff,
ToolConfirmationOutcome,
@ -464,18 +465,27 @@ describe('WriteFileTool', () => {
it('should return error if params are invalid (relative path)', async () => {
const params = { file_path: 'relative.txt', content: 'test' };
const result = await tool.execute(params, abortSignal);
expect(result.llmContent).toMatch(/Error: Invalid parameters provided/);
expect(result.returnDisplay).toMatch(/Error: File path must be absolute/);
expect(result.llmContent).toContain(
'Could not write file due to invalid parameters:',
);
expect(result.returnDisplay).toMatch(/File path must be absolute/);
expect(result.error).toEqual({
message: 'File path must be absolute: relative.txt',
type: ToolErrorType.INVALID_TOOL_PARAMS,
});
});
it('should return error if params are invalid (path outside root)', async () => {
const outsidePath = path.resolve(tempDir, 'outside-root.txt');
const params = { file_path: outsidePath, content: 'test' };
const result = await tool.execute(params, abortSignal);
expect(result.llmContent).toMatch(/Error: Invalid parameters provided/);
expect(result.returnDisplay).toContain(
'Error: File path must be within one of the workspace directories',
expect(result.llmContent).toContain(
'Could not write file due to invalid parameters:',
);
expect(result.returnDisplay).toContain(
'File path must be within one of the workspace directories',
);
expect(result.error?.type).toBe(ToolErrorType.INVALID_TOOL_PARAMS);
});
it('should return error if _getCorrectedFileContent returns an error during execute', async () => {
@ -490,10 +500,15 @@ describe('WriteFileTool', () => {
});
const result = await tool.execute(params, abortSignal);
expect(result.llmContent).toMatch(/Error checking existing file/);
expect(result.llmContent).toContain('Error checking existing file:');
expect(result.returnDisplay).toMatch(
/Error checking existing file: Simulated read error for execute/,
);
expect(result.error).toEqual({
message:
'Error checking existing file: Simulated read error for execute',
type: ToolErrorType.FILE_WRITE_FAILURE,
});
vi.spyOn(fs, 'readFileSync').mockImplementation(originalReadFileSync);
fs.chmodSync(filePath, 0o600);
@ -709,4 +724,114 @@ describe('WriteFileTool', () => {
expect(error).toContain(rootDir);
});
});
describe('specific error types for write failures', () => {
const abortSignal = new AbortController().signal;
it('should return PERMISSION_DENIED error when write fails with EACCES', async () => {
const filePath = path.join(rootDir, 'permission_denied_file.txt');
const content = 'test content';
// Mock writeFileSync to throw EACCES error
const originalWriteFileSync = fs.writeFileSync;
vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
const error = new Error('Permission denied') as NodeJS.ErrnoException;
error.code = 'EACCES';
throw error;
});
const params = { file_path: filePath, content };
const result = await tool.execute(params, abortSignal);
expect(result.error?.type).toBe(ToolErrorType.PERMISSION_DENIED);
expect(result.llmContent).toContain(
`Permission denied writing to file: ${filePath} (EACCES)`,
);
expect(result.returnDisplay).toContain('Permission denied');
vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
});
it('should return NO_SPACE_LEFT error when write fails with ENOSPC', async () => {
const filePath = path.join(rootDir, 'no_space_file.txt');
const content = 'test content';
// Mock writeFileSync to throw ENOSPC error
const originalWriteFileSync = fs.writeFileSync;
vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
const error = new Error(
'No space left on device',
) as NodeJS.ErrnoException;
error.code = 'ENOSPC';
throw error;
});
const params = { file_path: filePath, content };
const result = await tool.execute(params, abortSignal);
expect(result.error?.type).toBe(ToolErrorType.NO_SPACE_LEFT);
expect(result.llmContent).toContain(
`No space left on device: ${filePath} (ENOSPC)`,
);
expect(result.returnDisplay).toContain('No space left');
vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
});
it('should return TARGET_IS_DIRECTORY error when write fails with EISDIR', async () => {
const dirPath = path.join(rootDir, 'test_directory');
const content = 'test content';
// Mock fs.existsSync to return false to bypass validation
const originalExistsSync = fs.existsSync;
vi.spyOn(fs, 'existsSync').mockImplementation((path) => {
if (path === dirPath) {
return false; // Pretend directory doesn't exist to bypass validation
}
return originalExistsSync(path as string);
});
// Mock writeFileSync to throw EISDIR error
const originalWriteFileSync = fs.writeFileSync;
vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
const error = new Error('Is a directory') as NodeJS.ErrnoException;
error.code = 'EISDIR';
throw error;
});
const params = { file_path: dirPath, content };
const result = await tool.execute(params, abortSignal);
expect(result.error?.type).toBe(ToolErrorType.TARGET_IS_DIRECTORY);
expect(result.llmContent).toContain(
`Target is a directory, not a file: ${dirPath} (EISDIR)`,
);
expect(result.returnDisplay).toContain('Target is a directory');
vi.spyOn(fs, 'existsSync').mockImplementation(originalExistsSync);
vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
});
it('should return FILE_WRITE_FAILURE for generic write errors', async () => {
const filePath = path.join(rootDir, 'generic_error_file.txt');
const content = 'test content';
// Ensure fs.existsSync is not mocked for this test
vi.restoreAllMocks();
// Mock writeFileSync to throw generic error
vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
throw new Error('Generic write error');
});
const params = { file_path: filePath, content };
const result = await tool.execute(params, abortSignal);
expect(result.error?.type).toBe(ToolErrorType.FILE_WRITE_FAILURE);
expect(result.llmContent).toContain(
'Error writing to file: Generic write error',
);
expect(result.returnDisplay).toContain('Generic write error');
});
});
});

58
packages/core/src/tools/write-file.ts
View File

@ -17,6 +17,7 @@ import {
ToolCallConfirmationDetails,
Icon,
} from './tools.js';
import { ToolErrorType } from './tool-error.js';
import { Type } from '@google/genai';
import { SchemaValidator } from '../utils/schemaValidator.js';
import { makeRelative, shortenPath } from '../utils/paths.js';
@ -230,8 +231,12 @@ export class WriteFileTool
const validationError = this.validateToolParams(params);
if (validationError) {
return {
llmContent: `Error: Invalid parameters provided. Reason: ${validationError}`,
returnDisplay: `Error: ${validationError}`,
llmContent: `Could not write file due to invalid parameters: ${validationError}`,
returnDisplay: validationError,
error: {
message: validationError,
type: ToolErrorType.INVALID_TOOL_PARAMS,
},
};
}
@ -243,10 +248,16 @@ export class WriteFileTool
if (correctedContentResult.error) {
const errDetails = correctedContentResult.error;
const errorMsg = `Error checking existing file: ${errDetails.message}`;
const errorMsg = errDetails.code
? `Error checking existing file '${params.file_path}': ${errDetails.message} (${errDetails.code})`
: `Error checking existing file: ${errDetails.message}`;
return {
llmContent: `Error checking existing file ${params.file_path}: ${errDetails.message}`,
llmContent: errorMsg,
returnDisplay: errorMsg,
error: {
message: errorMsg,
type: ToolErrorType.FILE_WRITE_FAILURE,
},
};
}
@ -344,10 +355,43 @@ export class WriteFileTool
returnDisplay: displayResult,
};
} catch (error) {
const errorMsg = `Error writing to file: ${error instanceof Error ? error.message : String(error)}`;
// Capture detailed error information for debugging
let errorMsg: string;
let errorType = ToolErrorType.FILE_WRITE_FAILURE;
if (isNodeError(error)) {
// Handle specific Node.js errors with their error codes
errorMsg = `Error writing to file '${params.file_path}': ${error.message} (${error.code})`;
// Log specific error types for better debugging
if (error.code === 'EACCES') {
errorMsg = `Permission denied writing to file: ${params.file_path} (${error.code})`;
errorType = ToolErrorType.PERMISSION_DENIED;
} else if (error.code === 'ENOSPC') {
errorMsg = `No space left on device: ${params.file_path} (${error.code})`;
errorType = ToolErrorType.NO_SPACE_LEFT;
} else if (error.code === 'EISDIR') {
errorMsg = `Target is a directory, not a file: ${params.file_path} (${error.code})`;
errorType = ToolErrorType.TARGET_IS_DIRECTORY;
}
// Include stack trace in debug mode for better troubleshooting
if (this.config.getDebugMode() && error.stack) {
console.error('Write file error stack:', error.stack);
}
} else if (error instanceof Error) {
errorMsg = `Error writing to file: ${error.message}`;
} else {
errorMsg = `Error writing to file: ${String(error)}`;
}
return {
llmContent: `Error writing to file ${params.file_path}: ${errorMsg}`,
returnDisplay: `Error: ${errorMsg}`,
llmContent: errorMsg,
returnDisplay: errorMsg,
error: {
message: errorMsg,
type: errorType,
},
};
}
}

10
packages/core/src/utils/fileUtils.ts
View File

@ -195,10 +195,18 @@ export async function detectFileType(
return 'text';
}
export enum FileErrorType {
FILE_NOT_FOUND = 'FILE_NOT_FOUND',
IS_DIRECTORY = 'IS_DIRECTORY',
FILE_TOO_LARGE = 'FILE_TOO_LARGE',
READ_ERROR = 'READ_ERROR',
}
export interface ProcessedFileReadResult {
llmContent: PartUnion; // string for text, Part for image/pdf/unreadable binary
returnDisplay: string;
error?: string; // Optional error message for the LLM if file processing failed
errorType?: FileErrorType; // Structured error type using enum
isTruncated?: boolean; // For text files, indicates if content was truncated
originalLineCount?: number; // For text files
linesShown?: [number, number]; // For text files [startLine, endLine] (1-based for display)
@ -225,6 +233,7 @@ export async function processSingleFileContent(
llmContent: '',
returnDisplay: 'File not found.',
error: `File not found: ${filePath}`,
errorType: FileErrorType.FILE_NOT_FOUND,
};
}
const stats = await fs.promises.stat(filePath);
@ -233,6 +242,7 @@ export async function processSingleFileContent(
llmContent: '',
returnDisplay: 'Path is a directory.',
error: `Path is a directory, not a file: ${filePath}`,
errorType: FileErrorType.IS_DIRECTORY,
};
}