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lazy_import as a context manager #11

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ae3a583
lazy_import as a contextmanager
maurosilber Jul 13, 2022
9be4afb
Split basic test in two
maurosilber Jul 13, 2022
beeb504
Update sys.modules test
maurosilber Jul 13, 2022
c793e79
Update non-builtin test
maurosilber Jul 13, 2022
4b985f4
Use lazy_import on fake_pkg
maurosilber Jul 13, 2022
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Update sys.modules test
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@maurosilber
maurosilber committed Jul 13, 2022
commit beeb504ee05102134ca3c860b8a372674f152e77
19 changes: 13 additions & 6 deletions tests/test_lazy_loader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,18 +21,25 @@ def test_import_error():
import anything_not_real # noqa: F401


def test_lazy_import_impact_on_sys_modules():
math = lazy.load("math")
anything_not_real = lazy.load("anything_not_real")
def test_builtin_is_in_sys_modules():
with lazy_import():
import math

assert isinstance(math, types.ModuleType)
assert "math" in sys.modules

math.pi # trigger load of math

assert isinstance(math, types.ModuleType)
assert "math" in sys.modules
assert isinstance(anything_not_real, lazy.DelayedImportErrorModule)
assert "anything_not_real" not in sys.modules


def test_non_builtin_is_in_sys_modules():
# only do this if numpy is installed
pytest.importorskip("numpy")
np = lazy.load("numpy")
with lazy_import():
import numpy as np

assert isinstance(np, types.ModuleType)
assert "numpy" in sys.modules

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