fd21da3aa6
Parameterize `test_sources` via `pytest.mark.parameterize`, so that now the product of source and test cases for that source is visible to pytest and thus also the caller.
120 lines
3.4 KiB
Python
120 lines
3.4 KiB
Python
#
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# Runtime Tests for Source Modules
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#
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import contextlib
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import ctypes
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import http.server
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import json
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import os
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import socketserver
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import subprocess
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import tempfile
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import threading
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import pytest
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import osbuild.objectstore
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import osbuild.meta
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import osbuild.sources
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from .. import test
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def errcheck(ret, _func, _args):
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if ret == -1:
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e = ctypes.get_errno()
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raise OSError(e, os.strerror(e))
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CLONE_NEWNET = 0x40000000
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libc = ctypes.CDLL('libc.so.6', use_errno=True)
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libc.setns.errcheck = errcheck
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@contextlib.contextmanager
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def netns():
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# Grab a reference to the current namespace.
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with open("/proc/self/ns/net") as oldnet:
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# Create a new namespace and enter it.
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libc.unshare(CLONE_NEWNET)
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try:
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# Up the loopback device in the new namespace.
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subprocess.run(["ip", "link", "set", "up", "dev", "lo"], check=True)
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yield
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finally:
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# Revert to the old namespace, dropping our
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# reference to the new one.
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libc.setns(oldnet.fileno(), CLONE_NEWNET)
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@contextlib.contextmanager
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def fileServer(directory):
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with netns():
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# This is leaked until the program exits, but inaccessible after the with
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# due to the network namespace.
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barrier = threading.Barrier(2)
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thread = threading.Thread(target=runFileServer, args=(barrier, directory))
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thread.daemon = True
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thread.start()
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barrier.wait()
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yield
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def can_setup_netns() -> bool:
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try:
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with netns():
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return True
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except: # pylint: disable=bare-except
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return False
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def runFileServer(barrier, directory):
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class Handler(http.server.SimpleHTTPRequestHandler):
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def __init__(self, request, client_address, server):
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super().__init__(request, client_address, server, directory=directory)
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httpd = socketserver.TCPServer(('', 80), Handler)
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barrier.wait()
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httpd.serve_forever()
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def make_test_cases():
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sources = os.path.join(test.TestBase.locate_test_data(), "sources")
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if os.path.exists(sources):
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for source in os.listdir(sources):
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for case in os.listdir(f"{sources}/{source}/cases"):
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yield source, case
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def check_case(source, case, store, libdir):
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expects = case["expects"]
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if expects == "error":
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with pytest.raises(RuntimeError):
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source.download(store, libdir)
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elif expects == "success":
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source.download(store, libdir)
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else:
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raise ValueError(f"invalid expectation: {expects}")
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@pytest.mark.skipif(not can_setup_netns(), reason="network namespace setup failed")
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@pytest.mark.parametrize("source,case", make_test_cases())
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def test_sources(source, case):
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index = osbuild.meta.Index(os.curdir)
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sources = os.path.join(test.TestBase.locate_test_data(), "sources")
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with open(f"{sources}/{source}/cases/{case}") as f:
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case_options = json.load(f)
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info = index.get_module_info("Source", source)
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desc = case_options[source]
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items = desc.get("items", {})
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options = desc.get("options", {})
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src = osbuild.sources.Source(info, items, options)
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with tempfile.TemporaryDirectory() as tmpdir, \
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osbuild.objectstore.ObjectStore(tmpdir) as store, \
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fileServer(test.TestBase.locate_test_data()):
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check_case(src, case_options, store, index.path)
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check_case(src, case_options, store, index.path)
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