Add regression test for word-by-word seed setup

src/tests/test_add_new_fingerprint_words.py

@@ -0,0 +1,35 @@
+import builtins
+from types import SimpleNamespace
+
+import seedpass.core.manager as manager_module
+from helpers import TEST_SEED
+
+
+def test_add_new_fingerprint_word_entry_exits(monkeypatch):
+    pm = manager_module.PasswordManager.__new__(manager_module.PasswordManager)
+    pm.fingerprint_manager = SimpleNamespace(current_fingerprint=None)
+    pm.initialize_managers = lambda: None
+
+    calls = {"count": 0}
+    original_setup = manager_module.PasswordManager.setup_existing_seed
+
+    def setup_wrapper(self, *a, **k):
+        calls["count"] += 1
+        return original_setup(self, *a, **k)
+
+    monkeypatch.setattr(
+        manager_module.PasswordManager, "setup_existing_seed", setup_wrapper
+    )
+    monkeypatch.setattr(manager_module, "prompt_seed_words", lambda *a, **k: TEST_SEED)
+    monkeypatch.setattr(
+        manager_module.PasswordManager,
+        "_finalize_existing_seed",
+        lambda self, seed, password=None: "fp",
+    )
+    monkeypatch.setattr(builtins, "input", lambda *_a, **_k: "2")
+
+    result = pm.add_new_fingerprint()
+
+    assert result == "fp"
+    assert calls["count"] == 1
+    assert pm.fingerprint_manager.current_fingerprint == "fp"