2910ecb8e3
This makes it easier to call read_file_or_url and handle file or url errors. Now read_file_or_url will raise a UrlError in either case on errors.
236 lines
8.1 KiB
Python
236 lines
8.1 KiB
Python
import logging
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import os
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import StringIO
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import sys
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from mocker import MockerTestCase, ANY, ARGS, KWARGS
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from cloudinit import handlers
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from cloudinit import helpers
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from cloudinit import importer
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from cloudinit import log
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from cloudinit import settings
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from cloudinit import url_helper
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from cloudinit import util
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class FakeModule(handlers.Handler):
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def __init__(self):
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handlers.Handler.__init__(self, settings.PER_ALWAYS)
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self.types = []
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def list_types(self):
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return self.types
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def handle_part(self, _data, ctype, filename, # pylint: disable=W0221
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payload, frequency):
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pass
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class TestWalkerHandleHandler(MockerTestCase):
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def setUp(self):
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MockerTestCase.setUp(self)
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self.data = {
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"handlercount": 0,
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"frequency": "",
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"handlerdir": self.makeDir(),
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"handlers": helpers.ContentHandlers(),
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"data": None}
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self.expected_module_name = "part-handler-%03d" % (
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self.data["handlercount"],)
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expected_file_name = "%s.py" % self.expected_module_name
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expected_file_fullname = os.path.join(self.data["handlerdir"],
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expected_file_name)
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self.module_fake = FakeModule()
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self.ctype = None
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self.filename = None
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self.payload = "dummy payload"
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# Mock the write_file function
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write_file_mock = self.mocker.replace(util.write_file,
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passthrough=False)
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write_file_mock(expected_file_fullname, self.payload, 0600)
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def test_no_errors(self):
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"""Payload gets written to file and added to C{pdata}."""
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import_mock = self.mocker.replace(importer.import_module,
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passthrough=False)
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import_mock(self.expected_module_name)
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self.mocker.result(self.module_fake)
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self.mocker.replay()
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handlers.walker_handle_handler(self.data, self.ctype, self.filename,
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self.payload)
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self.assertEqual(1, self.data["handlercount"])
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def test_import_error(self):
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"""Module import errors are logged. No handler added to C{pdata}."""
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import_mock = self.mocker.replace(importer.import_module,
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passthrough=False)
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import_mock(self.expected_module_name)
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self.mocker.throw(ImportError())
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self.mocker.replay()
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handlers.walker_handle_handler(self.data, self.ctype, self.filename,
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self.payload)
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self.assertEqual(0, self.data["handlercount"])
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def test_attribute_error(self):
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"""Attribute errors are logged. No handler added to C{pdata}."""
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import_mock = self.mocker.replace(importer.import_module,
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passthrough=False)
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import_mock(self.expected_module_name)
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self.mocker.result(self.module_fake)
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self.mocker.throw(AttributeError())
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self.mocker.replay()
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handlers.walker_handle_handler(self.data, self.ctype, self.filename,
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self.payload)
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self.assertEqual(0, self.data["handlercount"])
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class TestHandlerHandlePart(MockerTestCase):
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def setUp(self):
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self.data = "fake data"
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self.ctype = "fake ctype"
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self.filename = "fake filename"
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self.payload = "fake payload"
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self.frequency = settings.PER_INSTANCE
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self.headers = {
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'Content-Type': self.ctype,
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}
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def test_normal_version_1(self):
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"""
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C{handle_part} is called without C{frequency} for
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C{handler_version} == 1.
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"""
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mod_mock = self.mocker.mock()
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getattr(mod_mock, "frequency")
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self.mocker.result(settings.PER_INSTANCE)
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getattr(mod_mock, "handler_version")
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self.mocker.result(1)
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mod_mock.handle_part(self.data, self.ctype, self.filename,
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self.payload)
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self.mocker.replay()
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handlers.run_part(mod_mock, self.data, self.filename,
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self.payload, self.frequency, self.headers)
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def test_normal_version_2(self):
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"""
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C{handle_part} is called with C{frequency} for
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C{handler_version} == 2.
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"""
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mod_mock = self.mocker.mock()
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getattr(mod_mock, "frequency")
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self.mocker.result(settings.PER_INSTANCE)
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getattr(mod_mock, "handler_version")
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self.mocker.result(2)
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mod_mock.handle_part(self.data, self.ctype, self.filename,
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self.payload, self.frequency)
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self.mocker.replay()
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handlers.run_part(mod_mock, self.data, self.filename,
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self.payload, self.frequency, self.headers)
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def test_modfreq_per_always(self):
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"""
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C{handle_part} is called regardless of frequency if nofreq is always.
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"""
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self.frequency = "once"
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mod_mock = self.mocker.mock()
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getattr(mod_mock, "frequency")
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self.mocker.result(settings.PER_ALWAYS)
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getattr(mod_mock, "handler_version")
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self.mocker.result(1)
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mod_mock.handle_part(self.data, self.ctype, self.filename,
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self.payload)
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self.mocker.replay()
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handlers.run_part(mod_mock, self.data, self.filename,
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self.payload, self.frequency, self.headers)
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def test_no_handle_when_modfreq_once(self):
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"""C{handle_part} is not called if frequency is once."""
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self.frequency = "once"
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mod_mock = self.mocker.mock()
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getattr(mod_mock, "frequency")
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self.mocker.result(settings.PER_ONCE)
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self.mocker.replay()
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handlers.run_part(mod_mock, self.data, self.filename,
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self.payload, self.frequency, self.headers)
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def test_exception_is_caught(self):
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"""Exceptions within C{handle_part} are caught and logged."""
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mod_mock = self.mocker.mock()
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getattr(mod_mock, "frequency")
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self.mocker.result(settings.PER_INSTANCE)
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getattr(mod_mock, "handler_version")
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self.mocker.result(1)
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mod_mock.handle_part(self.data, self.ctype, self.filename,
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self.payload)
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self.mocker.throw(Exception())
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self.mocker.replay()
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handlers.run_part(mod_mock, self.data, self.filename,
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self.payload, self.frequency, self.headers)
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class TestCmdlineUrl(MockerTestCase):
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def test_invalid_content(self):
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url = "http://example.com/foo"
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key = "mykey"
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payload = "0"
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cmdline = "ro %s=%s bar=1" % (key, url)
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mock_readurl = self.mocker.replace(url_helper.readurl,
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passthrough=False)
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mock_readurl(url, ARGS, KWARGS)
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self.mocker.result(url_helper.StringResponse(payload))
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self.mocker.replay()
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self.assertEqual((key, url, None),
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util.get_cmdline_url(names=[key], starts="xxxxxx",
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cmdline=cmdline))
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def test_valid_content(self):
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url = "http://example.com/foo"
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key = "mykey"
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payload = "xcloud-config\nmydata: foo\nbar: wark\n"
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cmdline = "ro %s=%s bar=1" % (key, url)
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mock_readurl = self.mocker.replace(url_helper.readurl,
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passthrough=False)
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mock_readurl(url, ARGS, KWARGS)
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self.mocker.result(url_helper.StringResponse(payload))
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self.mocker.replay()
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self.assertEqual((key, url, payload),
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util.get_cmdline_url(names=[key], starts="xcloud-config",
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cmdline=cmdline))
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def test_no_key_found(self):
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url = "http://example.com/foo"
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key = "mykey"
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cmdline = "ro %s=%s bar=1" % (key, url)
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self.mocker.replace(url_helper.readurl, passthrough=False)
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self.mocker.result(url_helper.StringResponse(""))
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self.mocker.replay()
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self.assertEqual((None, None, None),
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util.get_cmdline_url(names=["does-not-appear"],
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starts="#cloud-config", cmdline=cmdline))
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# vi: ts=4 expandtab
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