def test_merge_works_without_bind(self):
"""
merge_threadlocal returns values as normal even when there has
been no previous calls to bind_threadlocal.
"""
clear_threadlocal()
assert {"b": 2} == merge_threadlocal(None, None, {"b": 2})
def test_bind_and_merge(self):
"""
Binding a variable causes it to be included in the result of
merge_threadlocal.
"""
bind_threadlocal(a=1)
assert {"a": 1, "b": 2} == merge_threadlocal(None, None, {"b": 2})
def test_clear(self):
"""
The thread-local context can be cleared, causing any previously bound
variables to not be included in merge_threadlocal's result.
"""
bind_threadlocal(a=1)
clear_threadlocal()
assert {"b": 2} == merge_threadlocal(None, None, {"b": 2})
def test_multiple_binds(self):
"""
Multiple calls to bind_threadlocal accumulate values instead of
replacing them.
"""
bind_threadlocal(a=1, b=2)
bind_threadlocal(c=3)
assert {"a": 1, "b": 2, "c": 3} == merge_threadlocal(
None, None, {"b": 2}
)
