54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
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"""Unit-Tests stabile IDs (PLAN.md §3.6, §6.3)."""
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from __future__ import annotations
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import uuid
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from hms_domain import new_node_id, new_uuid, persistent_node_id
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def test_new_uuids_are_unique_and_parseable() -> None:
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a, b = new_uuid(), new_uuid()
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assert a != b
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uuid.UUID(a)
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uuid.UUID(b)
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def test_node_id_is_uuid_and_random() -> None:
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a, b = new_node_id(), new_node_id()
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uuid.UUID(a)
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assert a != b
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def test_persistent_node_id_stable_across_calls(tmp_path) -> None:
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identity = tmp_path / "identity" / "node_id"
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first = persistent_node_id(identity)
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second = persistent_node_id(identity)
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assert first == second # IP-/Hostnamenunabhängig: Datei ist Quelle der Wahrheit
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assert identity.read_text(encoding="utf-8").strip() == first
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def test_persistent_node_id_validated_on_load(tmp_path) -> None:
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identity = tmp_path / "identity" / "node_id"
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identity.parent.mkdir(parents=True)
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identity.write_text("not-a-uuid", encoding="utf-8")
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import pytest
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with pytest.raises(ValueError):
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persistent_node_id(identity)
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def test_two_nodes_get_distinct_ids(tmp_path) -> None:
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a = persistent_node_id(tmp_path / "a" / "node_id")
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b = persistent_node_id(tmp_path / "b" / "node_id")
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assert a != b # doppelte node_ids wären ein Fehler (§6.3)
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def test_concurrent_creation_yields_single_id(tmp_path) -> None:
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"""O_EXCL-Rennbedingung: beide Aufrufer erhalten dieselbe ID."""
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identity = tmp_path / "identity" / "node_id"
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id_a = persistent_node_id(identity)
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# zweite Erzeugung mit bereits existierender Datei → lädt vorhandene ID
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id_b = persistent_node_id(identity)
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assert id_a == id_b
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