summaryrefslogtreecommitdiffstats
path: root/Lib/unittest/mock.py
diff options
context:
space:
mode:
Diffstat (limited to 'Lib/unittest/mock.py')
-rw-r--r--Lib/unittest/mock.py7
1 files changed, 4 insertions, 3 deletions
diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index efe5763..4c58639 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -2271,9 +2271,10 @@ def _iterate_read_data(read_data):
# Helper for mock_open:
# Retrieve lines from read_data via a generator so that separate calls to
# readline, read, and readlines are properly interleaved
- data_as_list = ['{}\n'.format(l) for l in read_data.split('\n')]
+ sep = b'\n' if isinstance(read_data, bytes) else '\n'
+ data_as_list = [l + sep for l in read_data.split(sep)]
- if data_as_list[-1] == '\n':
+ if data_as_list[-1] == sep:
# If the last line ended in a newline, the list comprehension will have an
# extra entry that's just a newline. Remove this.
data_as_list = data_as_list[:-1]
@@ -2307,7 +2308,7 @@ def mock_open(mock=None, read_data=''):
def _read_side_effect(*args, **kwargs):
if handle.read.return_value is not None:
return handle.read.return_value
- return ''.join(_state[0])
+ return type(read_data)().join(_state[0])
def _readline_side_effect():
if handle.readline.return_value is not None: