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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { expect, describe, it } from 'vitest';
import { ShellTool } from './shell.js';
import { Config } from '../config/config.js';
describe('ShellTool', () => {
it('should allow a command if no restrictions are provided', async () => {
const config = {
getCoreTools: () => undefined,
getExcludeTools: () => undefined,
} as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ls -l');
expect(isAllowed).toBe(true);
});
it('should allow a command if it is in the allowed list', async () => {
const config = {
getCoreTools: () => ['ShellTool(ls -l)'],
getExcludeTools: () => undefined,
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ls -l');
expect(isAllowed).toBe(true);
});
it('should block a command if it is not in the allowed list', async () => {
const config = {
getCoreTools: () => ['ShellTool(ls -l)'],
getExcludeTools: () => undefined,
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('rm -rf /');
expect(isAllowed).toBe(false);
});
it('should block a command if it is in the blocked list', async () => {
const config = {
getCoreTools: () => undefined,
getExcludeTools: () => ['ShellTool(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('rm -rf /');
expect(isAllowed).toBe(false);
});
it('should allow a command if it is not in the blocked list', async () => {
const config = {
getCoreTools: () => undefined,
getExcludeTools: () => ['ShellTool(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ls -l');
expect(isAllowed).toBe(true);
});
it('should block a command if it is in both the allowed and blocked lists', async () => {
const config = {
getCoreTools: () => ['ShellTool(rm -rf /)'],
getExcludeTools: () => ['ShellTool(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('rm -rf /');
expect(isAllowed).toBe(false);
});
it('should allow any command when ShellTool is in coreTools without specific commands', async () => {
const config = {
getCoreTools: () => ['ShellTool'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(true);
});
it('should block any command when ShellTool is in excludeTools without specific commands', async () => {
const config = {
getCoreTools: () => [],
getExcludeTools: () => ['ShellTool'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(false);
});
it('should allow a command if it is in the allowed list using the public-facing name', async () => {
const config = {
getCoreTools: () => ['run_shell_command(ls -l)'],
getExcludeTools: () => undefined,
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ls -l');
expect(isAllowed).toBe(true);
});
it('should block a command if it is in the blocked list using the public-facing name', async () => {
const config = {
getCoreTools: () => undefined,
getExcludeTools: () => ['run_shell_command(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('rm -rf /');
expect(isAllowed).toBe(false);
});
it('should block any command when ShellTool is in excludeTools using the public-facing name', async () => {
const config = {
getCoreTools: () => [],
getExcludeTools: () => ['run_shell_command'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(false);
});
it('should block any command if coreTools contains an empty ShellTool command list using the public-facing name', async () => {
const config = {
getCoreTools: () => ['run_shell_command()'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(false);
});
it('should block any command if coreTools contains an empty ShellTool command list', async () => {
const config = {
getCoreTools: () => ['ShellTool()'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(false);
});
it('should block a command with extra whitespace if it is in the blocked list', async () => {
const config = {
getCoreTools: () => undefined,
getExcludeTools: () => ['ShellTool(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed(' rm -rf / ');
expect(isAllowed).toBe(false);
});
it('should allow any command when ShellTool is present with specific commands', async () => {
const config = {
getCoreTools: () => ['ShellTool', 'ShellTool(ls)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('any command');
expect(isAllowed).toBe(true);
});
it('should block a command on the blocklist even with a wildcard allow', async () => {
const config = {
getCoreTools: () => ['ShellTool'],
getExcludeTools: () => ['ShellTool(rm -rf /)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('rm -rf /');
expect(isAllowed).toBe(false);
});
it('should allow a command that starts with an allowed command prefix', async () => {
const config = {
getCoreTools: () => ['ShellTool(gh issue edit)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed(
'gh issue edit 1 --add-label "kind/feature"',
);
expect(isAllowed).toBe(true);
});
it('should allow a command that starts with an allowed command prefix using the public-facing name', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue edit)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed(
'gh issue edit 1 --add-label "kind/feature"',
);
expect(isAllowed).toBe(true);
});
it('should not allow a command that starts with an allowed command prefix but is chained with another command', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue edit)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue edit&&rm -rf /');
expect(isAllowed).toBe(false);
});
it('should not allow a command that is a prefix of an allowed command', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue edit)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue');
expect(isAllowed).toBe(false);
});
it('should not allow a command that is a prefix of a blocked command', async () => {
const config = {
getCoreTools: () => [],
getExcludeTools: () => ['run_shell_command(gh issue edit)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue');
expect(isAllowed).toBe(true);
});
it('should not allow a command that is chained with a pipe', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue list)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue list | rm -rf /');
expect(isAllowed).toBe(false);
});
it('should not allow a command that is chained with a semicolon', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue list)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue list; rm -rf /');
expect(isAllowed).toBe(false);
});
it('should block a chained command if any part is blocked', async () => {
const config = {
getCoreTools: () => ['run_shell_command(echo "hello")'],
getExcludeTools: () => ['run_shell_command(rm)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('echo "hello" && rm -rf /');
expect(isAllowed).toBe(false);
});
it('should block a command if its prefix is on the blocklist, even if the command itself is on the allowlist', async () => {
const config = {
getCoreTools: () => ['run_shell_command(git push)'],
getExcludeTools: () => ['run_shell_command(git)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('git push');
expect(isAllowed).toBe(false);
});
it('should be case-sensitive in its matching', async () => {
const config = {
getCoreTools: () => ['run_shell_command(echo)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ECHO "hello"');
expect(isAllowed).toBe(false);
});
it('should correctly handle commands with extra whitespace around chaining operators', async () => {
const config = {
getCoreTools: () => ['run_shell_command(ls -l)'],
getExcludeTools: () => ['run_shell_command(rm)'],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('ls -l ; rm -rf /');
expect(isAllowed).toBe(false);
});
it('should allow a chained command if all parts are allowed', async () => {
const config = {
getCoreTools: () => [
'run_shell_command(echo)',
'run_shell_command(ls -l)',
],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('echo "hello" && ls -l');
expect(isAllowed).toBe(true);
});
it('should block a command with command substitution using backticks', async () => {
const config = {
getCoreTools: () => ['run_shell_command(echo)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('echo `rm -rf /`');
expect(isAllowed).toBe(false);
});
it('should block a command with command substitution using $()', async () => {
const config = {
getCoreTools: () => ['run_shell_command(echo)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('echo $(rm -rf /)');
expect(isAllowed).toBe(false);
});
it('should allow a command with I/O redirection', async () => {
const config = {
getCoreTools: () => ['run_shell_command(echo)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('echo "hello" > file.txt');
expect(isAllowed).toBe(true);
});
it('should not allow a command that is chained with a double pipe', async () => {
const config = {
getCoreTools: () => ['run_shell_command(gh issue list)'],
getExcludeTools: () => [],
} as unknown as Config;
const shellTool = new ShellTool(config);
const isAllowed = shellTool.isCommandAllowed('gh issue list || rm -rf /');
expect(isAllowed).toBe(false);
});
});
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