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gh-128377: Fix test_cmd_line.test_non_interactive_output_buffering fail with PYTHONUNBUFFERED=1 #128378

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Merged
merged 8 commits into from
Jan 12, 2025
Merged

gh-128377: Fix test_cmd_line.test_non_interactive_output_buffering fail with PYTHONUNBUFFERED=1 #128378

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565f15c
Fix `test_cmd_line.test_non_interactive_output_buffering` fail with `…
WolframAlph Dec 31, 2024
7ff7de3
Use get if `PYTHONUNBUFFERED` is not defined`
WolframAlph Dec 31, 2024
a42798d
Use `EnvironmentVarGuard` to set `PYTHONUNBUFFERED`
WolframAlph Jan 1, 2025
6bc56b8
use unittest.skipIf
WolframAlph Jan 2, 2025
c13851c
fix spaces
WolframAlph Jan 2, 2025
db3031a
add line break
WolframAlph Jan 2, 2025
9aa5866
fix lint
WolframAlph Jan 2, 2025
cf6f0fc
fix alignment
WolframAlph Jan 11, 2025
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11 changes: 11 additions & 0 deletions Lib/test/test_cmd_line.py
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Original file line number Diff line number Diff line change
Expand Up @@ -337,6 +337,13 @@ def test_osx_android_utf8(self):
self.assertEqual(p.returncode, 0)

def test_non_interactive_output_buffering(self):
PYTHONUNBUFFERED = "PYTHONUNBUFFERED"
python_unbuffered_value = os.environ.get(PYTHONUNBUFFERED, "0")
python_unbuffered_on = python_unbuffered_value != "0"
if python_unbuffered_on:
# we expect buffered stdio
os.environ[PYTHONUNBUFFERED] = "0"

code = textwrap.dedent("""
import sys
out = sys.stdout
Expand All @@ -351,6 +358,10 @@ def test_non_interactive_output_buffering(self):
'False False False\n'
'False False True\n')

if python_unbuffered_on:
# restore original value
os.environ[PYTHONUNBUFFERED] = python_unbuffered_value

def test_unbuffered_output(self):
# Test expected operation of the '-u' switch
for stream in ('stdout', 'stderr'):
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