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Fail hard with tracebacks if pytest-expect isn't working #360

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Merged
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Nov 21, 2017
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Fail hard with tracebacks if pytest-expect isn't working #360

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22 changes: 22 additions & 0 deletions html5lib/tests/conftest.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
from __future__ import print_function
import os.path
import sys

import pkg_resources
import pytest
Expand All @@ -15,6 +17,26 @@
_sanitizer_testdata = os.path.join(_dir, "sanitizer-testdata")


def fail_if_missing_pytest_expect():
"""Throws an exception halting pytest if pytest-expect isn't working"""
try:
from pytest_expect import expect # noqa
except ImportError:
header = '*' * 78
print(
'\n' +
header + '\n' +
'ERROR: Either pytest-expect or its dependency u-msgpack-python is not\n' +
'installed. Please install them both before running pytest.\n' +
header + '\n',
file=sys.stderr
)
raise


fail_if_missing_pytest_expect()


def pytest_configure(config):
msgs = []

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