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Some tests which are unit test alike do not need to run on different pg versions. Logging test is one of them which I found for unrelated reasons. Co-authored-by: Alexander Bayandin <alexander@neon.tech>
91 lines
2.8 KiB
Python
91 lines
2.8 KiB
Python
import enum
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import os
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from typing import Optional
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import pytest
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from _pytest.config import Config
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from _pytest.config.argparsing import Parser
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"""
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This fixture is used to determine which version of Postgres to use for tests.
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"""
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# Inherit PgVersion from str rather than int to make it easier to pass as a command-line argument
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# TODO: use enum.StrEnum for Python >= 3.11
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@enum.unique
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class PgVersion(str, enum.Enum):
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V14 = "14"
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V15 = "15"
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V16 = "16"
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# Instead of making version an optional parameter in methods, we can use this fake entry
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# to explicitly rely on the default server version (could be different from pg_version fixture value)
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NOT_SET = "<-POSTRGRES VERSION IS NOT SET->"
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# Make it less confusing in logs
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def __repr__(self) -> str:
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return f"'{self.value}'"
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# Make this explicit for Python 3.11 compatibility, which changes the behavior of enums
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def __str__(self) -> str:
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return self.value
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# In GitHub workflows we use Postgres version with v-prefix (e.g. v14 instead of just 14),
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# sometime we need to do so in tests.
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@property
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def v_prefixed(self) -> str:
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return f"v{self.value}"
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@classmethod
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def _missing_(cls, value) -> Optional["PgVersion"]:
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known_values = {v.value for _, v in cls.__members__.items()}
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# Allow passing version as a string with "v" prefix (e.g. "v14")
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if isinstance(value, str) and value.lower().startswith("v") and value[1:] in known_values:
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return cls(value[1:])
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# Allow passing version as an int (e.g. 15 or 150002, both will be converted to PgVersion.V15)
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elif isinstance(value, int) and str(value)[:2] in known_values:
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return cls(str(value)[:2])
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# Make mypy happy
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# See https://github.com/python/mypy/issues/3974
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return None
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DEFAULT_VERSION: PgVersion = PgVersion.V15
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def skip_on_postgres(version: PgVersion, reason: str):
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return pytest.mark.skipif(
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PgVersion(os.environ.get("DEFAULT_PG_VERSION", DEFAULT_VERSION)) is version,
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reason=reason,
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)
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def xfail_on_postgres(version: PgVersion, reason: str):
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return pytest.mark.xfail(
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PgVersion(os.environ.get("DEFAULT_PG_VERSION", DEFAULT_VERSION)) is version,
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reason=reason,
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)
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def pytest_addoption(parser: Parser):
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parser.addoption(
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"--pg-version",
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action="store",
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type=PgVersion,
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help="DEPRECATED: Postgres version to use for tests",
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)
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def run_only_on_default_postgres(reason: str):
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return pytest.mark.skipif(
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PgVersion(os.environ.get("DEFAULT_PG_VERSION", DEFAULT_VERSION)) is not DEFAULT_VERSION,
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reason=reason,
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)
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def pytest_configure(config: Config):
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if config.getoption("--pg-version"):
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raise Exception("--pg-version is deprecated, use DEFAULT_PG_VERSION env var instead")
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