feat(auth): users module with bcrypt hashing + CRUD

backend/tests/test_auth_users.py

@@ -0,0 +1,93 @@
+"""Unit tests for cyclone.auth.users — User CRUD + bcrypt hashing."""
+
+from __future__ import annotations
+
+import pytest
+from sqlalchemy import delete
+
+from cyclone.auth import users
+from cyclone.db import SessionLocal, User
+
+
+@pytest.fixture(autouse=True)
+def _clear_users():
+    with SessionLocal()() as db:
+        db.execute(delete(User))
+        db.commit()
+    yield
+    with SessionLocal()() as db:
+        db.execute(delete(User))
+        db.commit()
+
+
+def test_hash_password_returns_bcrypt():
+    h = users.hash_password("hunter2hunter2")
+    assert h.startswith("$2")
+
+
+def test_hash_password_produces_unique_salts():
+    a = users.hash_password("same-password")
+    b = users.hash_password("same-password")
+    assert a != b
+
+
+def test_verify_password_correct():
+    h = users.hash_password("hunter2hunter2")
+    assert users.verify_password("hunter2hunter2", h) is True
+
+
+def test_verify_password_incorrect():
+    h = users.hash_password("hunter2hunter2")
+    assert users.verify_password("WRONG", h) is False
+
+
+def test_create_user_persists_with_hashed_password():
+    with SessionLocal()() as db:
+        u = users.create(db, username="alice", password="hunter2hunter2", role="admin")
+    assert u.id is not None
+    assert u.username == "alice"
+    assert u.role == "admin"
+    assert u.disabled_at is None
+    assert u.password_hash != "hunter2hunter2"
+    assert u.password_hash.startswith("$2")
+
+
+def test_create_user_rejects_duplicate_username():
+    with SessionLocal()() as db:
+        users.create(db, username="bob", password="hunter2hunter2", role="user")
+    with SessionLocal()() as db:
+        with pytest.raises(Exception):
+            users.create(db, username="bob", password="anotherone", role="user")
+
+
+def test_get_by_username_returns_user():
+    with SessionLocal()() as db:
+        users.create(db, username="carol", password="hunter2hunter2", role="viewer")
+    with SessionLocal()() as db:
+        u = users.get_by_username(db, "carol")
+    assert u is not None
+    assert u.username == "carol"
+
+
+def test_get_by_username_returns_none_for_missing():
+    with SessionLocal()() as db:
+        assert users.get_by_username(db, "ghost") is None
+
+
+def test_disable_user_sets_disabled_at():
+    with SessionLocal()() as db:
+        u = users.create(db, username="dave", password="hunter2hunter2", role="user")
+        users.disable(db, u.id)
+    with SessionLocal()() as db:
+        refreshed = users.get_by_username(db, "dave")
+    assert refreshed.disabled_at is not None
+
+
+def test_to_public_shape_omits_password_hash():
+    with SessionLocal()() as db:
+        u = users.create(db, username="eve", password="hunter2hunter2", role="admin")
+        shape = users.to_public(u)
+    assert "password_hash" not in shape
+    assert shape["username"] == "eve"
+    assert shape["role"] == "admin"
+    assert "id" in shape and "createdAt" in shape