Agent Police Department v1.0.0 MVP

tests/hash.test.js

@@ -0,0 +1,39 @@
+// tests/hash.test.js
+
+const { hashEvent, hashChain, sha256Async } = require('../lib/hash.js');
+
+describe('Hash', () => {
+  test('hashEvent returns consistent hash', () => {
+    const event = { id: 'e1', type: 'tool_use' };
+    const h1 = hashEvent(event);
+    const h2 = hashEvent(event);
+    expect(h1).toBe(h2);
+    expect(h1.length).toBeGreaterThan(0);
+  });
+
+  test('hashEvent returns different hash for different events', () => {
+    const h1 = hashEvent({ id: 'e1', type: 'tool_use' });
+    const h2 = hashEvent({ id: 'e2', type: 'api_call' });
+    expect(h1).not.toBe(h2);
+  });
+
+  test('hashChain returns empty for empty array', () => {
+    expect(hashChain([])).toBe('');
+  });
+
+  test('hashChain returns hash for events', () => {
+    const chain = hashChain([{ id: 'e1' }, { id: 'e2' }]);
+    expect(chain.length).toBeGreaterThan(0);
+  });
+
+  test('hashChain is order-sensitive', () => {
+    const chain1 = hashChain([{ id: 'e1' }, { id: 'e2' }]);
+    const chain2 = hashChain([{ id: 'e2' }, { id: 'e1' }]);
+    expect(chain1).not.toBe(chain2);
+  });
+
+  test('sha256Async returns hex string', async () => {
+    const hash = await sha256Async('hello');
+    expect(hash).toMatch(/^[a-f0-9]{64}$/);
+  });
+});