Test duplicate seed profile creation

src/tests/test_duplicate_seed_profile_creation.py

@@ -0,0 +1,53 @@
+import pytest
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+from seedpass.core.manager import PasswordManager
+from utils.fingerprint_manager import FingerprintManager
+from utils.fingerprint import generate_fingerprint
+
+VALID_SEED = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+
+
+def _setup_pm(tmp_path, monkeypatch):
+    pm = PasswordManager.__new__(PasswordManager)
+    pm.fingerprint_manager = FingerprintManager(tmp_path)
+    pm.config_manager = type("Cfg", (), {"get_kdf_iterations": lambda self: 1})()
+    monkeypatch.setattr("seedpass.core.manager.prompt_for_password", lambda: "pw")
+    monkeypatch.setattr("seedpass.core.manager.derive_index_key", lambda seed: b"idx")
+    monkeypatch.setattr(
+        "seedpass.core.manager.derive_key_from_password", lambda *a, **k: b"k"
+    )
+
+    class DummyEnc:
+        def __init__(self, *a, **k):
+            pass
+
+        def encrypt_parent_seed(self, seed):
+            pass
+
+    monkeypatch.setattr("seedpass.core.manager.EncryptionManager", DummyEnc)
+    monkeypatch.setattr("seedpass.core.manager.Vault", lambda *a, **k: object())
+    monkeypatch.setattr(
+        "seedpass.core.manager.ConfigManager", lambda **k: pm.config_manager
+    )
+    monkeypatch.setattr(pm, "initialize_bip85", lambda: None)
+    monkeypatch.setattr(pm, "initialize_managers", lambda: None)
+    monkeypatch.setattr(pm, "start_background_sync", lambda: None)
+    monkeypatch.setattr(pm, "store_hashed_password", lambda pw: None)
+    monkeypatch.setattr("seedpass.core.manager.confirm_action", lambda *_: False)
+    return pm
+
+
+def test_duplicate_seed_profile_creation(monkeypatch):
+    with TemporaryDirectory() as tmpdir:
+        tmp_path = Path(tmpdir)
+        pm = _setup_pm(tmp_path, monkeypatch)
+
+        fp1 = pm._finalize_existing_seed(VALID_SEED, password="pw")
+        assert fp1 == generate_fingerprint(VALID_SEED)
+        assert pm.fingerprint_manager.list_fingerprints() == [fp1]
+
+        fp2 = pm._finalize_existing_seed(VALID_SEED, password="pw")
+        assert fp2 is None
+        assert pm.fingerprint_manager.list_fingerprints() == [fp1]