def test_broken_plugin():
broken_backend = pkg_resources.EntryPoint.parse(
"broken_backend = xarray.tests.test_plugins:backend_1")
with pytest.warns(RuntimeWarning) as record:
_ = plugins.build_engines([broken_backend])
assert len(record) == 1
message = str(record[0].message)
assert "Engine 'broken_backend'" in message
def test_build_engines():
dummy_cfgrib_pkg_entrypoint = pkg_resources.EntryPoint.parse(
"cfgrib = xarray.tests.test_plugins:backend_1")
backend_entrypoints = plugins.build_engines([dummy_cfgrib_pkg_entrypoint])
assert backend_entrypoints["cfgrib"] is dummy_cfgrib
assert backend_entrypoints["cfgrib"].open_dataset_parameters == (
"filename_or_obj",
"decoder",
)
def test_broken_plugin() -> None:
broken_backend = EntryPoint(
"broken_backend",
"xarray.tests.test_plugins:backend_1",
"xarray.backends",
)
with pytest.warns(RuntimeWarning) as record:
_ = plugins.build_engines([broken_backend])
assert len(record) == 1
message = str(record[0].message)
assert "Engine 'broken_backend'" in message
def test_build_engines() -> None:
dummy_pkg_entrypoint = EntryPoint(
"cfgrib", "xarray.tests.test_plugins:backend_1", "xarray_backends"
)
backend_entrypoints = plugins.build_engines([dummy_pkg_entrypoint])
assert isinstance(backend_entrypoints["cfgrib"], DummyBackendEntrypoint1)
assert backend_entrypoints["cfgrib"].open_dataset_parameters == (
"filename_or_obj",
"decoder",
)
def test_build_engines_sorted() -> None:
dummy_pkg_entrypoints = [
EntryPoint("dummy2", "xarray.tests.test_plugins:backend_1", "xarray.backends"),
EntryPoint("dummy1", "xarray.tests.test_plugins:backend_1", "xarray.backends"),
]
backend_entrypoints = plugins.build_engines(dummy_pkg_entrypoints)
backend_entrypoints = list(backend_entrypoints)
indices = []
for be in plugins.STANDARD_BACKENDS_ORDER:
try:
index = backend_entrypoints.index(be)
backend_entrypoints.pop(index)
indices.append(index)
except ValueError:
pass
assert set(indices) < {0, -1}
assert list(backend_entrypoints) == sorted(backend_entrypoints)