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fixtures: extract a `_check_fixturedef` method 

This stuff is less interesting when reading `_get_active_fixturedef`.
This commit is contained in:
Ran Benita 2024-03-17 00:36:00 +02:00 committed by Bruno Oliveira
parent acf2971f46
commit 2e8fb9f140
1 changed files with 35 additions and 38 deletions
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73
src/_pytest/fixtures.py
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@ -560,7 +560,6 @@ class FixtureRequest(abc.ABC):
# The are no fixtures with this name applicable for the function.
if not fixturedefs:
raise FixtureLookupError(argname, self)
# A fixture may override another fixture with the same name, e.g. a
# fixture in a module can override a fixture in a conftest, a fixture in
# a class can override a fixture in the module, and so on.
@ -577,13 +576,11 @@ class FixtureRequest(abc.ABC):
# If already consumed all of the available levels, fail.
if -index > len(fixturedefs):
raise FixtureLookupError(argname, self)
fixturedef = fixturedefs[index]
# Prepare a SubRequest object for calling the fixture.
funcitem = self._pyfuncitem
try:
callspec = funcitem.callspec
callspec = self._pyfuncitem.callspec
except AttributeError:
callspec = None
if callspec is not None and argname in callspec.params:
@ -595,41 +592,8 @@ class FixtureRequest(abc.ABC):
param = NOTSET
param_index = 0
scope = fixturedef._scope
has_params = fixturedef.params is not None
fixtures_not_supported = getattr(funcitem, "nofuncargs", False)
if has_params and fixtures_not_supported:
msg = (
f"{funcitem.name} does not support fixtures, maybe unittest.TestCase subclass?\n"
f"Node id: {funcitem.nodeid}\n"
f"Function type: {type(funcitem).__name__}"
)
fail(msg, pytrace=False)
if has_params:
frame = inspect.stack()[2]
frameinfo = inspect.getframeinfo(frame[0])
source_path = absolutepath(frameinfo.filename)
source_lineno = frameinfo.lineno
try:
source_path_str = str(
source_path.relative_to(funcitem.config.rootpath)
)
except ValueError:
source_path_str = str(source_path)
location = getlocation(fixturedef.func, funcitem.config.rootpath)
msg = (
"The requested fixture has no parameter defined for test:\n"
f" {funcitem.nodeid}\n\n"
f"Requested fixture '{fixturedef.argname}' defined in:\n"
f"{location}\n\n"
f"Requested here:\n"
f"{source_path_str}:{source_lineno}"
)
fail(msg, pytrace=False)
# Check if a higher-level scoped fixture accesses a lower level one.
self._check_fixturedef_without_param(fixturedef)
self._check_scope(fixturedef, scope)
subrequest = SubRequest(
self, scope, param, param_index, fixturedef, _ispytest=True
)
@ -640,6 +604,39 @@ class FixtureRequest(abc.ABC):
self._fixture_defs[argname] = fixturedef
return fixturedef
def _check_fixturedef_without_param(self, fixturedef: "FixtureDef[object]") -> None:
"""Check that this request is allowed to execute this fixturedef without
a param."""
funcitem = self._pyfuncitem
has_params = fixturedef.params is not None
fixtures_not_supported = getattr(funcitem, "nofuncargs", False)
if has_params and fixtures_not_supported:
msg = (
f"{funcitem.name} does not support fixtures, maybe unittest.TestCase subclass?\n"
f"Node id: {funcitem.nodeid}\n"
f"Function type: {type(funcitem).__name__}"
)
fail(msg, pytrace=False)
if has_params:
frame = inspect.stack()[3]
frameinfo = inspect.getframeinfo(frame[0])
source_path = absolutepath(frameinfo.filename)
source_lineno = frameinfo.lineno
try:
source_path_str = str(source_path.relative_to(funcitem.config.rootpath))
except ValueError:
source_path_str = str(source_path)
location = getlocation(fixturedef.func, funcitem.config.rootpath)
msg = (
"The requested fixture has no parameter defined for test:\n"
f" {funcitem.nodeid}\n\n"
f"Requested fixture '{fixturedef.argname}' defined in:\n"
f"{location}\n\n"
f"Requested here:\n"
f"{source_path_str}:{source_lineno}"
)
fail(msg, pytrace=False)
def _get_fixturestack(self) -> List["FixtureDef[Any]"]:
values = [request._fixturedef for request in self._iter_chain()]
values.reverse()