在 pytest 中,如何跳过或 xfail 某些装置? [英] In pytest, how to skip or xfail certain fixtures?
问题描述
我有一个高度固定的测试功能,它在某些夹具输入下失败(应该如此).我怎样才能表明这一点?这就是我现在正在做的,也许有更好的方法.我对 py.test
很陌生,所以我很感激任何提示.
I have a heavily-fixtured test function which fails (as it should) with certain fixture inputs. How can I indicate this? This is what I'm doing now, and maybe there's a better way. I'm pretty new to py.test
so I'd appreciate any tips.
下一部分是所有输入装置.仅供参考,example_datapackage_path
在 conf.test
The next part is all the input fixtures. FYI, example_datapackage_path
is defined in conf.test
@pytest.fixture(params=[None, 'pooled_col', 'phenotype_col'])
def metadata_key(self, request):
return request.param
@pytest.fixture(params=[None, 'feature_rename_col'])
def expression_key(self, request):
return request.param
@pytest.fixture(params=[None, 'feature_rename_col'])
def splicing_key(self, request):
return request.param
@pytest.fixture
def datapackage(self, example_datapackage_path, metadata_key,
expression_key, splicing_key):
with open(example_datapackage_path) as f:
datapackage = json.load(f)
datatype_to_key = {'metadata': metadata_key,
'expression': expression_key,
'splicing': splicing_key}
for datatype, key in datatype_to_key.iteritems():
if key is not None:
resource = name_to_resource(datapackage, datatype)
if key in resource:
resource.pop(key)
return datapackage
@pytest.fixture
def datapackage_dir(self, example_datapackage_path):
return os.path.dirname(example_datapackage_path)
这是测试本身.
def test_from_datapackage(self, datapackage, datapackage_dir):
import flotilla
from flotilla.external import get_resource_from_name
study = flotilla.Study.from_datapackage(datapackage, datapackage_dir,
load_species_data=False)
metadata_resource = get_resource_from_name(datapackage, 'metadata')
expression_resource = get_resource_from_name(datapackage,
'expression')
splicing_resource = get_resource_from_name(datapackage, 'splicing')
phenotype_col = 'phenotype' if 'phenotype_col' \
not in metadata_resource else metadata_resource['phenotype_col']
pooled_col = None if 'pooled_col' not in metadata_resource else \
metadata_resource['pooled_col']
expression_feature_rename_col = 'gene_name' if \
'feature_rename_col' not in expression_resource \
else expression_resource['feature_rename_col']
splicing_feature_rename_col = 'gene_name' if \
'feature_rename_col' not in splicing_resource \
else splicing_resource['feature_rename_col']
assert study.metadata.phenotype_col == phenotype_col
assert study.metadata.pooled_col == pooled_col
assert study.expression.feature_rename_col \
== expression_feature_rename_col
assert study.splicing.feature_rename_col == splicing_feature_rename_col
我想做的是在metadata_key
中,说当参数是pooled_col
或phenotype_col
时,它会失败.我查看了pytest:Skip and xfail:处理无法成功的测试,但它只谈到了skip
和 xfail
用于参数化测试,但不是夹具.
What I would like to do is in metadata_key
, say that when the parameter is pooled_col
or phenotype_col
, that it will fail. I looked in pytest: Skip and xfail: dealing with tests that can not succeed, but it only talked about skip
and xfail
for parametrized test, but not fixtures.
推荐答案
在您的 datapackage
或 expression_key
固定装置中,您可以使用 pytest.xfail
和 pytest.skip
如这里.例如:
In your datapackage
or expression_key
fixtures you can use pytest.xfail
and pytest.skip
as described here. For example:
@pytest.fixture
def datapackage(self, example_datapackage_path, metadata_key,
expression_key, splicing_key):
if metadata_key == 'pooled_col':
pytest.skip('metadata key is "pooled_col"')
...
您也可以在夹具参数中使用 pytest.mark.xfail
,如下例所示:
You can also use pytest.mark.xfail
in fixture parameters as in this example:
@pytest.fixture(params=['a', pytest.mark.xfail('b'), 'c'])
def fx1(request):
return request.param
def test_spam(fx1):
assert fx1
如果您想跳过这些测试,这似乎可行:
If you prefer to skip these tests this seems to work:
@pytest.fixture(
params=['a', pytest.mark.skipif(True, reason='reason')('b'), 'c'])
def fx1(request):
return request.param
def test_spam(fx1):
assert fx1
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