import { describe, it, expect } from 'vitest';
/**
* Tests for input validation across the application
*/
describe('Input Validation Security', () => {
describe('Table Name Validation', () => {
const tableNameRegex = /^[\w\d_\.]+$/;
describe('Valid Table Names', () => {
it('should accept simple table name', () => {
expect(tableNameRegex.test('users')).toBe(true);
});
it('should accept schema-qualified name', () => {
expect(tableNameRegex.test('dbo.users')).toBe(true);
});
it('should accept name with underscores', () => {
expect(tableNameRegex.test('user_accounts')).toBe(true);
});
it('should accept name with numbers', () => {
expect(tableNameRegex.test('users2024')).toBe(true);
});
it('should accept three-part name', () => {
expect(tableNameRegex.test('database.dbo.users')).toBe(true);
});
});
describe('Invalid Table Names - SQL Injection Attempts', () => {
it('should reject semicolon (statement separator)', () => {
expect(tableNameRegex.test('users;DROP')).toBe(false);
});
it('should reject single quotes', () => {
expect(tableNameRegex.test("users'--")).toBe(false);
});
it('should reject double quotes', () => {
expect(tableNameRegex.test('users"')).toBe(false);
});
it('should reject comment markers', () => {
expect(tableNameRegex.test('users--')).toBe(false);
expect(tableNameRegex.test('users/*')).toBe(false);
});
it('should reject parentheses', () => {
expect(tableNameRegex.test('users()')).toBe(false);
});
it('should reject equals sign', () => {
expect(tableNameRegex.test('users=1')).toBe(false);
});
it('should reject spaces', () => {
expect(tableNameRegex.test('user accounts')).toBe(false);
});
it('should reject newlines', () => {
expect(tableNameRegex.test('users\nDROP')).toBe(false);
});
it('should reject tabs', () => {
expect(tableNameRegex.test('users\tDROP')).toBe(false);
});
it('should reject angle brackets', () => {
expect(tableNameRegex.test('users<script>')).toBe(false);
});
});
});
describe('Column Name Escaping', () => {
function escapeColumnName(name: string): string {
return `[${name}]`;
}
it('should wrap column in brackets', () => {
expect(escapeColumnName('name')).toBe('[name]');
});
it('should handle column with spaces', () => {
expect(escapeColumnName('first name')).toBe('[first name]');
});
it('should handle reserved words', () => {
expect(escapeColumnName('select')).toBe('[select]');
expect(escapeColumnName('user')).toBe('[user]');
});
});
describe('Parameterized Query Building', () => {
it('should use @param placeholders for values', () => {
const columns = ['name', 'email'];
const values = columns.map((_, i) => `@value${i}`).join(', ');
expect(values).toBe('@value0, @value1');
expect(values).not.toContain("'");
});
it('should use unique param names for multiple records', () => {
const columns = ['name'];
const records = [{}, {}];
const valueClauses = records.map((_, ri) =>
`(${columns.map((_, ci) => `@value${ri}_${ci}`).join(', ')})`
);
expect(valueClauses[0]).toBe('(@value0_0)');
expect(valueClauses[1]).toBe('(@value1_0)');
});
});
describe('WHERE Clause Requirements', () => {
function validateWhereClause(whereClause: string | undefined): boolean {
return !!whereClause && whereClause.trim() !== '';
}
it('should reject undefined WHERE clause', () => {
expect(validateWhereClause(undefined)).toBe(false);
});
it('should reject empty WHERE clause', () => {
expect(validateWhereClause('')).toBe(false);
});
it('should reject whitespace-only WHERE clause', () => {
expect(validateWhereClause(' ')).toBe(false);
expect(validateWhereClause('\t\n')).toBe(false);
});
it('should accept valid WHERE clause', () => {
expect(validateWhereClause('id = 1')).toBe(true);
});
it('should accept complex WHERE clause', () => {
expect(validateWhereClause("id = 1 AND status = 'active'")).toBe(true);
});
});
describe('Delete Confirmation Requirement', () => {
function validateDeleteConfirmation(confirm: any): boolean {
return confirm === true;
}
it('should reject undefined confirmation', () => {
expect(validateDeleteConfirmation(undefined)).toBe(false);
});
it('should reject false confirmation', () => {
expect(validateDeleteConfirmation(false)).toBe(false);
});
it('should reject string "true"', () => {
expect(validateDeleteConfirmation('true')).toBe(false);
});
it('should reject number 1', () => {
expect(validateDeleteConfirmation(1)).toBe(false);
});
it('should accept boolean true only', () => {
expect(validateDeleteConfirmation(true)).toBe(true);
});
});
describe('JSON Input Parsing', () => {
it('should safely parse valid JSON object', () => {
const input = '{"name": "test", "value": 123}';
const parsed = JSON.parse(input);
expect(parsed).toEqual({ name: 'test', value: 123 });
});
it('should safely parse valid JSON array', () => {
const input = '[{"name": "a"}, {"name": "b"}]';
const parsed = JSON.parse(input);
expect(parsed).toHaveLength(2);
});
it('should throw on prototype pollution attempt', () => {
// JSON.parse doesn't execute __proto__, but we should test awareness
const input = '{"__proto__": {"polluted": true}}';
const parsed = JSON.parse(input);
// The object has __proto__ as a regular property, not prototype pollution
expect(parsed.__proto__).toEqual({ polluted: true });
// But the actual prototype is not polluted
expect(({} as any).polluted).toBeUndefined();
});
it('should throw on invalid JSON', () => {
expect(() => JSON.parse('{invalid}')).toThrow();
expect(() => JSON.parse("{'key': 'value'}")).toThrow(); // Single quotes
expect(() => JSON.parse('{key: "value"}')).toThrow(); // Unquoted key
});
});
describe('Query Length Limits', () => {
const MAX_QUERY_LENGTH = 10000;
function validateQueryLength(query: string): boolean {
return query.length <= MAX_QUERY_LENGTH;
}
it('should accept query at max length', () => {
const query = 'SELECT ' + 'a'.repeat(MAX_QUERY_LENGTH - 7);
expect(validateQueryLength(query)).toBe(true);
});
it('should reject query exceeding max length', () => {
const query = 'SELECT ' + 'a'.repeat(MAX_QUERY_LENGTH);
expect(validateQueryLength(query)).toBe(false);
});
});
describe('Result Set Limits', () => {
const MAX_RECORDS = 10000;
function limitResults<T>(data: T[]): T[] {
return data.length > MAX_RECORDS ? data.slice(0, MAX_RECORDS) : data;
}
it('should not modify results under limit', () => {
const data = Array(100).fill({ id: 1 });
expect(limitResults(data)).toHaveLength(100);
});
it('should truncate results exceeding limit', () => {
const data = Array(15000).fill({ id: 1 });
expect(limitResults(data)).toHaveLength(MAX_RECORDS);
});
});
describe('Column Name Sanitization', () => {
function sanitizeColumnName(name: string): string {
return name.replace(/[^\w\s-_.]/g, '');
}
it('should preserve valid column names', () => {
expect(sanitizeColumnName('user_name')).toBe('user_name');
expect(sanitizeColumnName('firstName')).toBe('firstName');
});
it('should remove script tags', () => {
expect(sanitizeColumnName('name<script>')).toBe('namescript');
});
it('should remove special characters', () => {
// The regex preserves hyphens as they're valid in column names
// Only quotes and semicolons are removed
expect(sanitizeColumnName("name';")).toBe('name');
expect(sanitizeColumnName("name<>")).toBe('name');
});
it('should preserve spaces in column names', () => {
expect(sanitizeColumnName('first name')).toBe('first name');
});
it('should preserve hyphens', () => {
expect(sanitizeColumnName('user-id')).toBe('user-id');
});
it('should preserve dots', () => {
expect(sanitizeColumnName('user.name')).toBe('user.name');
});
});
});
