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from tests.unittests import helpers
from cloudinit.handlers import cloud_config
from cloudinit.handlers import (CONTENT_START, CONTENT_END)
from cloudinit import helpers as c_helpers
from cloudinit import util
import collections
import glob
import os
import re
SOURCE_PAT = "source*.*yaml"
EXPECTED_PAT = "expected%s.yaml"
def _old_mergedict(src, cand):
"""
Merge values from C{cand} into C{src}.
If C{src} has a key C{cand} will not override.
Nested dictionaries are merged recursively.
"""
if isinstance(src, dict) and isinstance(cand, dict):
for (k, v) in cand.iteritems():
if k not in src:
src[k] = v
else:
src[k] = _old_mergedict(src[k], v)
return src
def _old_mergemanydict(*args):
out = {}
for a in args:
out = _old_mergedict(out, a)
return out
class TestSimpleRun(helpers.ResourceUsingTestCase):
def _load_merge_files(self):
merge_root = self.resourceLocation('merge_sources')
tests = []
source_ids = collections.defaultdict(list)
expected_files = {}
for fn in glob.glob(os.path.join(merge_root, SOURCE_PAT)):
base_fn = os.path.basename(fn)
file_id = re.match(r"source(\d+)\-(\d+)[.]yaml", base_fn)
if not file_id:
raise IOError("File %s does not have a numeric identifier"
% (fn))
file_id = int(file_id.group(1))
source_ids[file_id].append(fn)
expected_fn = os.path.join(merge_root, EXPECTED_PAT % (file_id))
if not os.path.isfile(expected_fn):
raise IOError("No expected file found at %s" % (expected_fn))
expected_files[file_id] = expected_fn
for i in sorted(source_ids.keys()):
source_file_contents = []
for fn in sorted(source_ids[i]):
source_file_contents.append([fn, util.load_file(fn)])
expected = util.load_yaml(util.load_file(expected_files[i]))
entry = [source_file_contents, [expected, expected_files[i]]]
tests.append(entry)
return tests
def test_merge_samples(self):
tests = self._load_merge_files()
paths = c_helpers.Paths({})
cc_handler = cloud_config.CloudConfigPartHandler(paths)
cc_handler.cloud_fn = None
for (payloads, (expected_merge, expected_fn)) in tests:
cc_handler.handle_part(None, CONTENT_START, None,
None, None, None)
merging_fns = []
for (fn, contents) in payloads:
cc_handler.handle_part(None, None, "%s.yaml" % (fn),
contents, None, {})
merging_fns.append(fn)
merged_buf = cc_handler.cloud_buf
cc_handler.handle_part(None, CONTENT_END, None,
None, None, None)
fail_msg = "Equality failure on checking %s with %s: %s != %s"
fail_msg = fail_msg % (expected_fn,
",".join(merging_fns), merged_buf,
expected_merge)
self.assertEquals(expected_merge, merged_buf, msg=fail_msg)
def test_compat_merges_dict(self):
a = {
'1': '2',
'b': 'c',
}
b = {
'b': 'e',
}
c = _old_mergedict(a, b)
d = util.mergemanydict([a, b])
self.assertEquals(c, d)
def test_compat_merges_list(self):
a = {'b': [1, 2, 3]}
b = {'b': [4, 5]}
c = {'b': [6, 7]}
e = _old_mergemanydict(a, b, c)
f = util.mergemanydict([a, b, c])
self.assertEquals(e, f)
def test_compat_merges_str(self):
a = {'b': "hi"}
b = {'b': "howdy"}
c = {'b': "hallo"}
e = _old_mergemanydict(a, b, c)
f = util.mergemanydict([a, b, c])
self.assertEquals(e, f)
def test_compat_merge_sub_dict(self):
a = {
'1': '2',
'b': {
'f': 'g',
}
}
b = {
'b': {
'e': 'c',
}
}
c = _old_mergedict(a, b)
d = util.mergemanydict([a, b])
self.assertEquals(c, d)
def test_compat_merge_sub_list(self):
a = {
'1': '2',
'b': {
'f': ['1'],
}
}
b = {
'b': {
'f': [],
}
}
c = _old_mergedict(a, b)
d = util.mergemanydict([a, b])
self.assertEquals(c, d)
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