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# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
import json
import os
import subprocess
import sys
from hypothesistooling.projects.hypothesispython import BASE_DIR
BRANCH_CHECK = "branch-check"
VALIDATE_BRANCH_CHECK = os.path.join(BASE_DIR, "scripts", "validate_branch_check.py")
def write_entries(tmp_path, entries):
with open(tmp_path / BRANCH_CHECK, "w", encoding="utf-8") as f:
f.writelines([json.dumps(entry) + "\n" for entry in entries])
def run_validate_branch_check(tmp_path, *, check, **kwargs):
return subprocess.run(
[sys.executable, VALIDATE_BRANCH_CHECK],
cwd=tmp_path,
text=True,
capture_output=True,
check=check,
**kwargs,
)
def test_validates_branches(tmp_path):
write_entries(
tmp_path,
[
{"name": name, "value": value}
for name in ("first", "second", "third")
for value in (False, True)
],
)
output = run_validate_branch_check(tmp_path, check=True)
assert output.stdout == "Successfully validated 3 branches.\n"
def test_validates_one_branch(tmp_path):
write_entries(
tmp_path, [{"name": "sole", "value": value} for value in (False, True)]
)
output = run_validate_branch_check(tmp_path, check=True)
assert output.stdout == "Successfully validated 1 branch.\n"
def test_fails_on_zero_branches(tmp_path):
write_entries(tmp_path, [])
output = run_validate_branch_check(tmp_path, check=False)
assert output.returncode == 1
assert output.stdout == "No branches found in the branch-check file?\n"
def test_reports_uncovered_branches(tmp_path):
write_entries(
tmp_path,
[
{"name": "branch that is always taken", "value": True},
{"name": "some other branch that is never taken", "value": False},
{"name": "covered branch", "value": True},
{"name": "covered branch", "value": False},
],
)
output = run_validate_branch_check(tmp_path, check=False)
assert output.returncode == 1
expected = """\
Some branches were not properly covered.
The following were always True:
* branch that is always taken
The following were always False:
* some other branch that is never taken
"""
assert output.stdout == expected
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