Add unit tests for utilities

src/tests/test_checksum_utils.py

@@ -0,0 +1,38 @@
+import hashlib
+from pathlib import Path
+
+from utils import checksum
+
+
+def test_calculate_checksum(tmp_path):
+    file = tmp_path / "data.txt"
+    content = "hello world"
+    file.write_text(content)
+    expected = hashlib.sha256(content.encode()).hexdigest()
+    result = checksum.calculate_checksum(str(file))
+    assert result == expected
+
+
+def test_calculate_checksum_missing(tmp_path):
+    missing = tmp_path / "missing.txt"
+    assert checksum.calculate_checksum(str(missing)) is None
+
+
+def test_verify_and_update(tmp_path):
+    chk_file = tmp_path / "chk.txt"
+    chk_file.write_text("abc")
+    assert checksum.verify_checksum("abc", str(chk_file))
+    assert not checksum.verify_checksum("def", str(chk_file))
+
+    assert checksum.update_checksum("payload", str(chk_file))
+    expected = hashlib.sha256("payload".encode()).hexdigest()
+    assert chk_file.read_text() == expected
+
+
+def test_initialize_checksum(tmp_path):
+    data = tmp_path / "file.bin"
+    data.write_text("payload")
+    chk_file = tmp_path / "chk2.txt"
+    assert checksum.initialize_checksum(str(data), str(chk_file))
+    expected = hashlib.sha256("payload".encode()).hexdigest()
+    assert chk_file.read_text() == expected

src/tests/test_fingerprint_manager_utils.py

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+from utils.fingerprint_manager import FingerprintManager
+
+
+def test_add_and_remove_fingerprint(tmp_path):
+    mgr = FingerprintManager(tmp_path)
+    phrase = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+    fp = mgr.add_fingerprint(phrase)
+    assert fp in mgr.list_fingerprints()
+    dir_path = mgr.get_fingerprint_directory(fp)
+    assert dir_path and dir_path.exists()
+    assert mgr.select_fingerprint(fp)
+    assert mgr.get_current_fingerprint_dir() == dir_path
+    assert mgr.remove_fingerprint(fp)
+    assert fp not in mgr.list_fingerprints()
+    assert not dir_path.exists()
+
+
+def test_remove_nonexistent_fingerprint(tmp_path):
+    mgr = FingerprintManager(tmp_path)
+    assert not mgr.remove_fingerprint("UNKNOWN")

src/tests/test_password_prompt.py

@@ -0,0 +1,34 @@
+import builtins
+from itertools import cycle
+
+import pytest
+
+from utils import password_prompt
+
+
+def test_prompt_new_password(monkeypatch):
+    responses = cycle(["goodpass", "goodpass"])
+    monkeypatch.setattr(
+        password_prompt.getpass, "getpass", lambda prompt: next(responses)
+    )
+    result = password_prompt.prompt_new_password()
+    assert result == "goodpass"
+
+
+def test_prompt_new_password_retry(monkeypatch):
+    seq = iter(["pass1", "pass2", "passgood", "passgood"])
+    monkeypatch.setattr(password_prompt.getpass, "getpass", lambda prompt: next(seq))
+    result = password_prompt.prompt_new_password()
+    assert result == "passgood"
+
+
+def test_prompt_existing_password(monkeypatch):
+    monkeypatch.setattr(password_prompt.getpass, "getpass", lambda prompt: "mypassword")
+    assert password_prompt.prompt_existing_password() == "mypassword"
+
+
+def test_confirm_action_yes_no(monkeypatch):
+    monkeypatch.setattr(builtins, "input", lambda _: "Y")
+    assert password_prompt.confirm_action()
+    monkeypatch.setattr(builtins, "input", lambda _: "n")
+    assert not password_prompt.confirm_action()