import { describe, it, expect } from 'vitest';
describe('DeleteData', () => {
describe('Confirmation Requirement', () => {
it('should reject delete without confirmation', () => {
const confirmDelete = false;
if (!confirmDelete || confirmDelete !== true) {
const result = {
success: false,
message: 'Physical DELETE operations require confirmDelete: true. Consider using update_data tool to set __deleted = 1 instead (soft delete).',
warning: 'This database uses soft delete patterns. Physical deletes should be rare.',
};
expect(result.success).toBe(false);
expect(result.message).toContain('confirmDelete: true');
expect(result.warning).toBeDefined();
}
});
it('should reject delete with undefined confirmation', () => {
const confirmDelete = undefined;
const requiresConfirmation = !confirmDelete || confirmDelete !== true;
expect(requiresConfirmation).toBe(true);
});
it('should accept delete with explicit confirmation', () => {
const confirmDelete = true;
const requiresConfirmation = !confirmDelete || confirmDelete !== true;
expect(requiresConfirmation).toBe(false);
});
it('should reject delete with string "true" (not boolean)', () => {
const confirmDelete = 'true' as any;
const requiresConfirmation = !confirmDelete || confirmDelete !== true;
expect(requiresConfirmation).toBe(true);
});
});
describe('WHERE Clause Validation', () => {
it('should require WHERE clause', () => {
const whereClause = '';
const isValid = Boolean(whereClause && whereClause.trim() !== '');
expect(isValid).toBe(false);
});
it('should reject whitespace-only WHERE clause', () => {
const whereClause = ' \t\n ';
const isValid = Boolean(whereClause && whereClause.trim() !== '');
expect(isValid).toBe(false);
});
it('should accept valid WHERE clause', () => {
const whereClause = 'id = 1';
const isValid = Boolean(whereClause && whereClause.trim() !== '');
expect(isValid).toBe(true);
});
});
describe('Table Name Validation', () => {
const tableNameRegex = /^[\w\d_\.]+$/;
it('should accept simple table name', () => {
expect(tableNameRegex.test('users')).toBe(true);
});
it('should accept schema-qualified table name', () => {
expect(tableNameRegex.test('dbo.users')).toBe(true);
});
it('should accept table name with underscore', () => {
expect(tableNameRegex.test('user_accounts')).toBe(true);
});
it('should accept table name with numbers', () => {
expect(tableNameRegex.test('users2024')).toBe(true);
});
it('should reject table name with spaces', () => {
expect(tableNameRegex.test('user accounts')).toBe(false);
});
it('should reject table name with special characters', () => {
expect(tableNameRegex.test('users;DROP')).toBe(false);
expect(tableNameRegex.test('users--')).toBe(false);
expect(tableNameRegex.test("users'")).toBe(false);
});
it('should reject table name with SQL keywords embedded', () => {
// Note: the regex only validates format, not SQL keywords
// But special characters used in injection are blocked
expect(tableNameRegex.test('users;DELETE')).toBe(false);
});
});
describe('Query Construction', () => {
it('should build correct DELETE query', () => {
const tableName = 'users';
const whereClause = 'id = 1';
const query = `DELETE FROM ${tableName} WHERE ${whereClause}`;
expect(query).toBe('DELETE FROM users WHERE id = 1');
});
it('should handle schema-qualified table name', () => {
const tableName = 'dbo.users';
const whereClause = 'status = 0';
const query = `DELETE FROM ${tableName} WHERE ${whereClause}`;
expect(query).toBe('DELETE FROM dbo.users WHERE status = 0');
});
});
describe('Readonly Mode', () => {
it('should block operations in readonly mode', () => {
const isReadonlyMode = true;
if (isReadonlyMode) {
const result = {
success: false,
message: 'Operation denied: Database is in READONLY mode',
error: 'READONLY_MODE',
};
expect(result.success).toBe(false);
expect(result.error).toBe('READONLY_MODE');
}
});
});
describe('Response Format', () => {
it('should return rows deleted count and warning', () => {
const rowsAffected = 3;
const result = {
success: true,
message: `DELETE completed. ${rowsAffected} row(s) deleted`,
rowsAffected: rowsAffected,
warning: 'Physical delete performed. This database uses soft delete patterns (__deleted = 1).',
};
expect(result.success).toBe(true);
expect(result.rowsAffected).toBe(3);
expect(result.warning).toContain('soft delete');
});
});
});
