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schulos/src/lib/csrf.test.ts
T

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import { describe, expect, test } from 'bun:test';
import { isCsrfProtectedRequest, isTrustedRequestOrigin } from './csrf';
describe('CSRF origin protection', () => {
test('allows safe methods without origin headers', () => {
const request = new Request('https://school.example/api/students');
expect(isCsrfProtectedRequest(request)).toBeFalse();
expect(isTrustedRequestOrigin(request)).toBeTrue();
});
test('allows mutations from the request origin', () => {
const request = new Request('https://school.example/api/students', {
method: 'POST',
headers: { origin: 'https://school.example' },
});
expect(isCsrfProtectedRequest(request)).toBeTrue();
expect(isTrustedRequestOrigin(request)).toBeTrue();
});
test('rejects cross-origin mutation requests', () => {
const request = new Request('https://school.example/api/students', {
method: 'DELETE',
headers: { origin: 'https://attacker.example' },
});
expect(isTrustedRequestOrigin(request)).toBeFalse();
});
});