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bug(core): Prompt engineering for truncated read_file. (#5161)

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joshualitt
2025-08-06 13:52:04 -07:00
committed by GitHub
parent ad5d2af4e3
commit 43510ed212
6 changed files with 77 additions and 36 deletions
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28
packages/core/src/tools/read-many-files.test.ts
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@@ -476,6 +476,34 @@ describe('ReadManyFilesTool', () => {
fs.rmSync(tempDir1, { recursive: true, force: true });
fs.rmSync(tempDir2, { recursive: true, force: true });
});
it('should add a warning for truncated files', async () => {
createFile('file1.txt', 'Content1');
// Create a file that will be "truncated" by making it long
const longContent = Array.from({ length: 2500 }, (_, i) => `L${i}`).join(
'\n',
);
createFile('large-file.txt', longContent);
const params = { paths: ['*.txt'] };
const result = await tool.execute(params, new AbortController().signal);
const content = result.llmContent as string[];
const normalFileContent = content.find((c) => c.includes('file1.txt'));
const truncatedFileContent = content.find((c) =>
c.includes('large-file.txt'),
);
expect(normalFileContent).not.toContain(
'[WARNING: This file was truncated.',
);
expect(truncatedFileContent).toContain(
"[WARNING: This file was truncated. To view the full content, use the 'read_file' tool on this specific file.]",
);
// Check that the actual content is still there but truncated
expect(truncatedFileContent).toContain('L200');
expect(truncatedFileContent).not.toContain('L2400');
});
});
describe('Batch Processing', () => {