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from mocker import MockerTestCase
from cloudinit import util
class TestMergeDict(MockerTestCase):
def test_simple_merge(self):
"""Test simple non-conflict merge."""
source = {"key1": "value1"}
candidate = {"key2": "value2"}
result = util.mergedict(source, candidate)
self.assertEqual({"key1": "value1", "key2": "value2"}, result)
def test_nested_merge(self):
"""Test nested merge."""
source = {"key1": {"key1.1": "value1.1"}}
candidate = {"key1": {"key1.2": "value1.2"}}
result = util.mergedict(source, candidate)
self.assertEqual(
{"key1": {"key1.1": "value1.1", "key1.2": "value1.2"}}, result)
def test_merge_does_not_override(self):
"""Test that candidate doesn't override source."""
source = {"key1": "value1", "key2": "value2"}
candidate = {"key1": "value2", "key2": "NEW VALUE"}
result = util.mergedict(source, candidate)
self.assertEqual(source, result)
def test_empty_candidate(self):
"""Test empty candidate doesn't change source."""
source = {"key": "value"}
candidate = {}
result = util.mergedict(source, candidate)
self.assertEqual(source, result)
def test_empty_source(self):
"""Test empty source is replaced by candidate."""
source = {}
candidate = {"key": "value"}
result = util.mergedict(source, candidate)
self.assertEqual(candidate, result)
def test_non_dict_candidate(self):
"""Test non-dict candidate is discarded."""
source = {"key": "value"}
candidate = "not a dict"
result = util.mergedict(source, candidate)
self.assertEqual(source, result)
def test_non_dict_source(self):
"""Test non-dict source is not modified with a dict candidate."""
source = "not a dict"
candidate = {"key": "value"}
result = util.mergedict(source, candidate)
self.assertEqual(source, result)
def test_neither_dict(self):
"""Test if neither candidate or source is dict source wins."""
source = "source"
candidate = "candidate"
result = util.mergedict(source, candidate)
self.assertEqual(source, result)
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