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bpo-18748: test_io: silence destructor errors by vstinner · Pull Request #12805 · python/cpython · GitHub

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bpo-18748: test_io: silence destructor errors #12805

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Merged
vstinner merged 1 commit into from
Apr 12, 2019
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bpo-18748: test_io: silence destructor errors #12805

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29 changes: 29 additions & 0 deletions Lib/test/test_io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -991,6 +991,9 @@ def flush(self):
# This would cause an assertion failure.
self.assertRaises(OSError, f.close)

# Silence destructor error
R.flush = lambda self: None


class CIOTest(IOTest):

Expand Down Expand Up @@ -1167,6 +1170,10 @@ def bad_close():
self.assertEqual(err.exception.__context__.args, ('flush',))
self.assertFalse(b.closed)

# Silence destructor error
raw.close = lambda: None
b.flush = lambda: None

def test_nonnormalized_close_error_on_close(self):
# Issue #21677
raw = self.MockRawIO()
Expand All @@ -1184,6 +1191,10 @@ def bad_close():
self.assertIn('non_existing_flush', str(err.exception.__context__))
self.assertFalse(b.closed)

# Silence destructor error
b.flush = lambda: None
raw.close = lambda: None

def test_multi_close(self):
raw = self.MockRawIO()
b = self.tp(raw)
Expand Down Expand Up @@ -2039,6 +2050,9 @@ def reader_close():
self.assertFalse(reader.closed)
self.assertTrue(writer.closed)

# Silence destructor error
reader.close = lambda: None

def test_writer_close_error_on_close(self):
def writer_close():
writer_non_existing
Expand All @@ -2053,6 +2067,9 @@ def writer_close():
self.assertTrue(reader.closed)
self.assertFalse(writer.closed)

# Silence destructor error
writer.close = lambda: None

def test_reader_writer_close_error_on_close(self):
def reader_close():
reader_non_existing
Expand All @@ -2072,6 +2089,10 @@ def writer_close():
self.assertFalse(reader.closed)
self.assertFalse(writer.closed)

# Silence destructor error
reader.close = lambda: None
writer.close = lambda: None

def test_isatty(self):
class SelectableIsAtty(MockRawIO):
def __init__(self, isatty):
Expand Down Expand Up @@ -3270,6 +3291,10 @@ def bad_close():
self.assertEqual(err.exception.__context__.args, ('flush',))
self.assertFalse(txt.closed)

# Silence destructor error
buffer.close = lambda: None
txt.flush = lambda: None

def test_nonnormalized_close_error_on_close(self):
# Issue #21677
buffer = self.BytesIO(self.testdata)
Expand All @@ -3287,6 +3312,10 @@ def bad_close():
self.assertIn('non_existing_flush', str(err.exception.__context__))
self.assertFalse(txt.closed)

# Silence destructor error
buffer.close = lambda: None
txt.flush = lambda: None

def test_multi_close(self):
txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii")
txt.close()
Expand Down
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