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# pytest fixtures
from __future__ import annotations
import pathlib
import pytest
import pint
_TINY = """
yocto- = 1e-24 = y-
zepto- = 1e-21 = z-
atto- = 1e-18 = a-
femto- = 1e-15 = f-
pico- = 1e-12 = p-
nano- = 1e-9 = n-
micro- = 1e-6 = µ- = μ- = u- = mu- = mc-
milli- = 1e-3 = m-
centi- = 1e-2 = c-
deci- = 1e-1 = d-
deca- = 1e+1 = da- = deka-
hecto- = 1e2 = h-
kilo- = 1e3 = k-
mega- = 1e6 = M-
giga- = 1e9 = G-
tera- = 1e12 = T-
peta- = 1e15 = P-
exa- = 1e18 = E-
zetta- = 1e21 = Z-
yotta- = 1e24 = Y-
meter = [length] = m = metre
second = [time] = s = sec
angstrom = 1e-10 * meter = Å = ångström = Å
minute = 60 * second = min
"""
@pytest.fixture(scope="session")
def tmppath_factory(tmpdir_factory) -> pathlib.Path:
tmp = tmpdir_factory.mktemp("pint")
return pathlib.Path(tmp)
@pytest.fixture(scope="session")
def tiny_definition_file(tmppath_factory: pathlib.Path) -> pathlib.Path:
folder = tmppath_factory / "definitions"
folder.mkdir(exist_ok=True, parents=True)
path = folder / "tiny.txt"
if not path.exists():
path.write_text(_TINY, encoding="utf-8")
return path
@pytest.fixture
def registry_empty():
return pint.UnitRegistry(None)
@pytest.fixture
def registry_tiny(tiny_definition_file: pathlib.Path):
return pint.UnitRegistry(tiny_definition_file)
@pytest.fixture
def func_registry():
return pint.UnitRegistry()
@pytest.fixture(scope="class")
def class_registry():
"""Only use for those test that do not modify the registry."""
return pint.UnitRegistry()
@pytest.fixture(scope="module")
def module_registry():
"""Only use for those test that do not modify the registry."""
return pint.UnitRegistry()
@pytest.fixture(scope="session")
def sess_registry():
"""Only use for those test that do not modify the registry."""
return pint.UnitRegistry()
@pytest.fixture(scope="class")
def class_tiny_app_registry():
ureg_bak = pint.get_application_registry()
ureg = pint.UnitRegistry(None)
ureg.define("foo = []")
ureg.define("bar = foo / 2")
pint.set_application_registry(ureg)
assert pint.get_application_registry() is ureg
yield ureg
pint.set_application_registry(ureg_bak)
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