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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import {
vi,
describe,
it,
expect,
beforeEach,
afterEach,
Mock,
beforeAll,
} from 'vitest';
import * as path from 'node:path';
import { loadGeminiIgnorePatterns } from './loadIgnorePatterns.js';
import os from 'node:os';
// Define the type for our mock function explicitly.
type ReadFileSyncMockType = Mock<
(path: string, encoding: string) => string | Buffer
>;
// Declare a variable to hold our mock function instance.
let mockedFsReadFileSync: ReadFileSyncMockType;
vi.mock('node:fs', async () => {
const actualFsModule =
await vi.importActual<typeof import('node:fs')>('node:fs');
return {
...actualFsModule,
readFileSync: vi.fn(), // The factory creates and returns the vi.fn() instance.
};
});
let actualFs: typeof import('node:fs');
describe('loadGeminiIgnorePatterns', () => {
let tempDir: string;
let consoleLogSpy: Mock<
(message?: unknown, ...optionalParams: unknown[]) => void
>;
let consoleWarnSpy: Mock<
(message?: unknown, ...optionalParams: unknown[]) => void
>;
beforeAll(async () => {
actualFs = await vi.importActual<typeof import('node:fs')>('node:fs');
const mockedFsModule = await import('node:fs');
mockedFsReadFileSync =
mockedFsModule.readFileSync as unknown as ReadFileSyncMockType;
});
beforeEach(() => {
tempDir = actualFs.mkdtempSync(
path.join(os.tmpdir(), 'gemini-ignore-test-'),
);
consoleLogSpy = vi
.spyOn(console, 'log')
.mockImplementation(() => {}) as Mock<
(message?: unknown, ...optionalParams: unknown[]) => void
>;
consoleWarnSpy = vi
.spyOn(console, 'warn')
.mockImplementation(() => {}) as Mock<
(message?: unknown, ...optionalParams: unknown[]) => void
>;
mockedFsReadFileSync.mockReset();
});
afterEach(() => {
if (actualFs.existsSync(tempDir)) {
actualFs.rmSync(tempDir, { recursive: true, force: true });
}
consoleLogSpy.mockRestore();
consoleWarnSpy.mockRestore();
});
it('should load and parse patterns from .geminiignore, ignoring comments and empty lines', () => {
const ignoreContent = [
'# This is a comment',
'pattern1',
' pattern2 ', // Should be trimmed
'', // Empty line
'pattern3 # Inline comment', // Handled by trim
'*.log',
'!important.file',
].join('\n');
const ignoreFilePath = path.join(tempDir, '.geminiignore');
actualFs.writeFileSync(ignoreFilePath, ignoreContent);
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') return ignoreContent;
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual([
'pattern1',
'pattern2',
'pattern3 # Inline comment',
'*.log',
'!important.file',
]);
expect(consoleLogSpy).toHaveBeenCalledWith(
expect.stringContaining('Loaded 5 patterns from .geminiignore'),
);
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
it('should return an empty array and log info if .geminiignore is not found', () => {
const ignoreFilePath = path.join(tempDir, '.geminiignore');
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') {
const error = new Error('File not found') as NodeJS.ErrnoException;
error.code = 'ENOENT';
throw error;
}
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual([]);
expect(consoleLogSpy).not.toHaveBeenCalled();
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
it('should return an empty array if .geminiignore is empty', () => {
const ignoreFilePath = path.join(tempDir, '.geminiignore');
actualFs.writeFileSync(ignoreFilePath, '');
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') return ''; // Return string for empty file
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual([]);
expect(consoleLogSpy).not.toHaveBeenCalledWith(
expect.stringContaining('Loaded 0 patterns from .geminiignore'),
);
expect(consoleLogSpy).not.toHaveBeenCalledWith(
expect.stringContaining('No .geminiignore file found'),
);
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
it('should return an empty array if .geminiignore contains only comments and empty lines', () => {
const ignoreContent = [
'# Comment 1',
' # Comment 2 with leading spaces',
'',
' ', // Whitespace only line
].join('\n');
const ignoreFilePath = path.join(tempDir, '.geminiignore');
actualFs.writeFileSync(ignoreFilePath, ignoreContent);
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') return ignoreContent;
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual([]);
expect(consoleLogSpy).not.toHaveBeenCalledWith(
expect.stringContaining('Loaded 0 patterns from .geminiignore'),
);
expect(consoleLogSpy).not.toHaveBeenCalledWith(
expect.stringContaining('No .geminiignore file found'),
);
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
it('should handle read errors (other than ENOENT) and log a warning', () => {
const ignoreFilePath = path.join(tempDir, '.geminiignore');
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') {
const error = new Error('Test read error') as NodeJS.ErrnoException;
error.code = 'EACCES';
throw error;
}
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual([]);
expect(consoleWarnSpy).toHaveBeenCalledWith(
expect.stringContaining(
`[WARN] Could not read .geminiignore file at ${ignoreFilePath}: Test read error`,
),
);
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
it('should correctly handle patterns with inline comments if not starting with #', () => {
const ignoreContent = 'src/important # but not this part';
const ignoreFilePath = path.join(tempDir, '.geminiignore');
actualFs.writeFileSync(ignoreFilePath, ignoreContent);
mockedFsReadFileSync.mockImplementation((p: string, encoding: string) => {
if (p === ignoreFilePath && encoding === 'utf-8') return ignoreContent;
throw new Error(
`Mock fs.readFileSync: Unexpected call with path: ${p}, encoding: ${encoding}`,
);
});
const patterns = loadGeminiIgnorePatterns(tempDir);
expect(patterns).toEqual(['src/important # but not this part']);
expect(consoleLogSpy).toHaveBeenCalledWith(
expect.stringContaining('Loaded 1 patterns from .geminiignore'),
);
expect(mockedFsReadFileSync).toHaveBeenCalledWith(ignoreFilePath, 'utf-8');
});
});
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