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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { vi } from 'vitest';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import {
EXTENSIONS_CONFIG_FILENAME,
annotateActiveExtensions,
loadExtensions,
} from './extension.js';
vi.mock('os', async (importOriginal) => {
const os = await importOriginal<typeof import('os')>();
return {
...os,
homedir: vi.fn(),
};
});
const EXTENSIONS_DIRECTORY_NAME = path.join('.gemini', 'extensions');
describe('loadExtensions', () => {
let tempWorkspaceDir: string;
let tempHomeDir: string;
beforeEach(() => {
tempWorkspaceDir = fs.mkdtempSync(
path.join(os.tmpdir(), 'gemini-cli-test-workspace-'),
);
tempHomeDir = fs.mkdtempSync(
path.join(os.tmpdir(), 'gemini-cli-test-home-'),
);
vi.mocked(os.homedir).mockReturnValue(tempHomeDir);
});
afterEach(() => {
fs.rmSync(tempWorkspaceDir, { recursive: true, force: true });
fs.rmSync(tempHomeDir, { recursive: true, force: true });
});
it('should include extension path in loaded extension', () => {
const workspaceExtensionsDir = path.join(
tempWorkspaceDir,
EXTENSIONS_DIRECTORY_NAME,
);
fs.mkdirSync(workspaceExtensionsDir, { recursive: true });
const extensionDir = path.join(workspaceExtensionsDir, 'test-extension');
fs.mkdirSync(extensionDir, { recursive: true });
const config = {
name: 'test-extension',
version: '1.0.0',
};
fs.writeFileSync(
path.join(extensionDir, EXTENSIONS_CONFIG_FILENAME),
JSON.stringify(config),
);
const extensions = loadExtensions(tempWorkspaceDir);
expect(extensions).toHaveLength(1);
expect(extensions[0].path).toBe(extensionDir);
expect(extensions[0].config.name).toBe('test-extension');
});
it('should load context file path when GEMINI.md is present', () => {
const workspaceExtensionsDir = path.join(
tempWorkspaceDir,
EXTENSIONS_DIRECTORY_NAME,
);
fs.mkdirSync(workspaceExtensionsDir, { recursive: true });
createExtension(workspaceExtensionsDir, 'ext1', '1.0.0', true);
createExtension(workspaceExtensionsDir, 'ext2', '2.0.0');
const extensions = loadExtensions(tempWorkspaceDir);
expect(extensions).toHaveLength(2);
const ext1 = extensions.find((e) => e.config.name === 'ext1');
const ext2 = extensions.find((e) => e.config.name === 'ext2');
expect(ext1?.contextFiles).toEqual([
path.join(workspaceExtensionsDir, 'ext1', 'GEMINI.md'),
]);
expect(ext2?.contextFiles).toEqual([]);
});
it('should load context file path from the extension config', () => {
const workspaceExtensionsDir = path.join(
tempWorkspaceDir,
EXTENSIONS_DIRECTORY_NAME,
);
fs.mkdirSync(workspaceExtensionsDir, { recursive: true });
createExtension(
workspaceExtensionsDir,
'ext1',
'1.0.0',
false,
'my-context-file.md',
);
const extensions = loadExtensions(tempWorkspaceDir);
expect(extensions).toHaveLength(1);
const ext1 = extensions.find((e) => e.config.name === 'ext1');
expect(ext1?.contextFiles).toEqual([
path.join(workspaceExtensionsDir, 'ext1', 'my-context-file.md'),
]);
});
});
describe('annotateActiveExtensions', () => {
const extensions = [
{ config: { name: 'ext1', version: '1.0.0' }, contextFiles: [] },
{ config: { name: 'ext2', version: '1.0.0' }, contextFiles: [] },
{ config: { name: 'ext3', version: '1.0.0' }, contextFiles: [] },
];
it('should mark all extensions as active if no enabled extensions are provided', () => {
const activeExtensions = annotateActiveExtensions(extensions, []);
expect(activeExtensions).toHaveLength(3);
expect(activeExtensions.every((e) => e.isActive)).toBe(true);
});
it('should mark only the enabled extensions as active', () => {
const activeExtensions = annotateActiveExtensions(extensions, [
'ext1',
'ext3',
]);
expect(activeExtensions).toHaveLength(3);
expect(activeExtensions.find((e) => e.name === 'ext1')?.isActive).toBe(
true,
);
expect(activeExtensions.find((e) => e.name === 'ext2')?.isActive).toBe(
false,
);
expect(activeExtensions.find((e) => e.name === 'ext3')?.isActive).toBe(
true,
);
});
it('should mark all extensions as inactive when "none" is provided', () => {
const activeExtensions = annotateActiveExtensions(extensions, ['none']);
expect(activeExtensions).toHaveLength(3);
expect(activeExtensions.every((e) => !e.isActive)).toBe(true);
});
it('should handle case-insensitivity', () => {
const activeExtensions = annotateActiveExtensions(extensions, ['EXT1']);
expect(activeExtensions.find((e) => e.name === 'ext1')?.isActive).toBe(
true,
);
});
it('should log an error for unknown extensions', () => {
const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
annotateActiveExtensions(extensions, ['ext4']);
expect(consoleSpy).toHaveBeenCalledWith('Extension not found: ext4');
consoleSpy.mockRestore();
});
});
function createExtension(
extensionsDir: string,
name: string,
version: string,
addContextFile = false,
contextFileName?: string,
): void {
const extDir = path.join(extensionsDir, name);
fs.mkdirSync(extDir);
fs.writeFileSync(
path.join(extDir, EXTENSIONS_CONFIG_FILENAME),
JSON.stringify({ name, version, contextFileName }),
);
if (addContextFile) {
fs.writeFileSync(path.join(extDir, 'GEMINI.md'), 'context');
}
if (contextFileName) {
fs.writeFileSync(path.join(extDir, contextFileName), 'context');
}
}
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