test: unit, integration and e2e tests

Task: MIL-002#6

tests/integration/test_json_password_repository.py

@@ -0,0 +1,111 @@
+import json
+from pathlib import Path
+
+import pytest
+
+from password_manager.domain.errors import (
+    DataFileNotFoundError,
+    EntryNotFoundError,
+    InvalidDataFileError,
+)
+from password_manager.domain.password_entry import PasswordEntry
+from password_manager.infrastructure.persistence.json_password_repository import (
+    JsonPasswordRepository,
+)
+
+ENTRY = PasswordEntry("example.com", "me@x.org", "pw1")
+
+
+def test_add_writes_nested_json_and_reads_back(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    repository = JsonPasswordRepository(path)
+
+    repository.add(ENTRY)
+
+    assert json.loads(path.read_text("utf-8")) == {
+        "example.com": {"email": "me@x.org", "password": "pw1"}
+    }
+    assert repository.find("example.com") == ENTRY
+
+
+def test_add_uses_indent_of_four(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    JsonPasswordRepository(path).add(ENTRY)
+
+    assert '\n    "example.com"' in path.read_text("utf-8")
+
+
+def test_add_keeps_existing_entries(tmp_path: Path) -> None:
+    repository = JsonPasswordRepository(tmp_path / "data.json")
+    other = PasswordEntry("other.org", "o@x.org", "pw2")
+    repository.add(ENTRY)
+
+    repository.add(other)
+
+    assert repository.find("example.com") == ENTRY
+    assert repository.find("other.org") == other
+
+
+def test_add_creates_missing_file(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    assert not path.exists()
+
+    JsonPasswordRepository(path).add(ENTRY)
+
+    assert path.exists()
+
+
+def test_add_rewrites_empty_file(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    path.write_text("", encoding="utf-8")
+
+    JsonPasswordRepository(path).add(ENTRY)
+
+    assert JsonPasswordRepository(path).find("example.com") == ENTRY
+
+
+def test_add_rewrites_invalid_json(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    path.write_text("{not json", encoding="utf-8")
+
+    JsonPasswordRepository(path).add(ENTRY)
+
+    assert JsonPasswordRepository(path).find("example.com") == ENTRY
+
+
+def test_add_refuses_json_that_is_not_an_object(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    path.write_text("[1, 2]", encoding="utf-8")
+
+    with pytest.raises(InvalidDataFileError):
+        JsonPasswordRepository(path).add(ENTRY)
+    assert path.read_text("utf-8") == "[1, 2]"
+
+
+def test_find_raises_when_file_missing(tmp_path: Path) -> None:
+    with pytest.raises(DataFileNotFoundError):
+        JsonPasswordRepository(tmp_path / "data.json").find("example.com")
+
+
+def test_find_raises_when_website_absent(tmp_path: Path) -> None:
+    repository = JsonPasswordRepository(tmp_path / "data.json")
+    repository.add(ENTRY)
+
+    with pytest.raises(EntryNotFoundError):
+        repository.find("nope.com")
+
+
+def test_find_raises_not_found_on_empty_file(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    path.write_text("", encoding="utf-8")
+
+    with pytest.raises(EntryNotFoundError):
+        JsonPasswordRepository(path).find("example.com")
+
+
+def test_find_raises_when_entry_lacks_keys(tmp_path: Path) -> None:
+    path = tmp_path / "data.json"
+    path.write_text('{"example.com": {"email": "e"}}', encoding="utf-8")
+
+    with pytest.raises(InvalidDataFileError):
+        JsonPasswordRepository(path).find("example.com")