68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
import pytest
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from _pytest.stash import Stash
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from _pytest.stash import StashKey
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def test_stash() -> None:
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stash = Stash()
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assert len(stash) == 0
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assert not stash
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key1 = StashKey[str]()
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key2 = StashKey[int]()
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# Basic functionality - single key.
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assert key1 not in stash
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stash[key1] = "hello"
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assert key1 in stash
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assert stash[key1] == "hello"
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assert stash.get(key1, None) == "hello"
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stash[key1] = "world"
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assert stash[key1] == "world"
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# Has correct type (no mypy error).
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stash[key1] + "string"
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assert len(stash) == 1
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assert stash
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# No interaction with another key.
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assert key2 not in stash
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assert stash.get(key2, None) is None
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with pytest.raises(KeyError):
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stash[key2]
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with pytest.raises(KeyError):
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del stash[key2]
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stash[key2] = 1
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assert stash[key2] == 1
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# Has correct type (no mypy error).
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stash[key2] + 20
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del stash[key1]
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with pytest.raises(KeyError):
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del stash[key1]
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with pytest.raises(KeyError):
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stash[key1]
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# setdefault
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stash[key1] = "existing"
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assert stash.setdefault(key1, "default") == "existing"
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assert stash[key1] == "existing"
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key_setdefault = StashKey[bytes]()
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assert stash.setdefault(key_setdefault, b"default") == b"default"
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assert stash[key_setdefault] == b"default"
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assert len(stash) == 3
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assert stash
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# Can't accidentally add attributes to stash object itself.
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with pytest.raises(AttributeError):
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stash.foo = "nope" # type: ignore[attr-defined]
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# No interaction with anoter stash.
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stash2 = Stash()
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key3 = StashKey[int]()
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assert key2 not in stash2
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stash2[key2] = 100
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stash2[key3] = 200
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assert stash2[key2] + stash2[key3] == 300
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assert stash[key2] == 1
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assert key3 not in stash
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