lorax/tests/lib.py

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#
# Copyright (C) 2018 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
from contextlib import contextmanager
import magic
from io import StringIO
import shutil
import subprocess
import tempfile
@contextmanager
def captured_output():
new_out, new_err = StringIO(), StringIO()
old_out, old_err = sys.stdout, sys.stderr
try:
sys.stdout, sys.stderr = new_out, new_err
yield sys.stdout, sys.stderr
finally:
sys.stdout, sys.stderr = old_out, old_err
def get_file_magic(filename):
"""Get the file type details using libmagic
Returns "" on failure or a string containing the description of the file
"""
details = ""
try:
ms = magic.open(magic.NONE)
ms.load()
details = ms.file(filename)
finally:
ms.close()
return details
def create_git_repo():
"""Create a git repo in a tmpdir
Call this from setUpClass()
This returns the following fields:
* repodir - the directory holding the repository
* test_results - A dict with information to use for the tests
* first_commit - hash of the first commit
"""
repodir = tempfile.mkdtemp(prefix="git-rpm-test.")
# Create a local git repo in a temporary directory, populate it with files.
cmd = ["git", "init", repodir]
subprocess.check_call(cmd)
oldcwd = os.getcwd()
os.chdir(repodir)
cmd = ["git", "config", "user.email", "test@testing.localhost"]
subprocess.check_call(cmd)
# Hold the expected file paths for the tests
test_results = {"first": [], "second": [], "branch": []}
# Add some files
results_path = "./tests/pylorax/results/"
for f in ["full-recipe.toml", "minimal.toml", "modules-only.toml"]:
shutil.copy2(os.path.join(oldcwd, results_path, f), repodir)
test_results["first"].append(f)
cmd = ["git", "add", "*.toml"]
subprocess.check_call(cmd)
cmd = ["git", "commit", "-m", "first files"]
subprocess.check_call(cmd)
cmd = ["git", "tag", "v1.0.0"]
subprocess.check_call(cmd)
# Get the commit hash
cmd = ["git", "log", "--pretty=%H"]
first_commit = subprocess.check_output(cmd).decode("UTF-8").strip()
# 2nd commit adds to 1st commit
test_results["second"] = test_results["first"].copy()
# Add some more files
os.makedirs(os.path.join(repodir, "only-bps/"))
for f in ["packages-only.toml", "groups-only.toml"]:
shutil.copy2(os.path.join(oldcwd, results_path, f), os.path.join(repodir, "only-bps/"))
test_results["second"].append(os.path.join("only-bps/", f))
# Add a dotfile as well
open(os.path.join(repodir, "only-bps/.bpsrc"), "w").write("dotfile test\n")
test_results["second"].append("only-bps/.bpsrc")
test_results["second"] = sorted(test_results["second"])
cmd = ["git", "add", "*.toml", "only-bps/.bpsrc"]
subprocess.check_call(cmd)
cmd = ["git", "commit", "-m", "second files"]
subprocess.check_call(cmd)
cmd = ["git", "tag", "v1.1.0"]
subprocess.check_call(cmd)
# Make a branch for some other files
cmd = ["git", "checkout", "-b", "custom-branch"]
subprocess.check_call(cmd)
# 3nd commit adds to 2nd commit
test_results["branch"] = test_results["second"].copy()
# Add some files to the new branch
for f in ["custom-base.toml", "repos-git.toml"]:
shutil.copy2(os.path.join(oldcwd, results_path, f), repodir)
test_results["branch"].append(f)
test_results["branch"] = sorted(test_results["branch"])
cmd = ["git", "add", "*.toml"]
subprocess.check_call(cmd)
cmd = ["git", "commit", "-m", "branch files"]
subprocess.check_call(cmd)
os.chdir(oldcwd)
return (repodir, test_results, first_commit)