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Also add tests for TextIOWrapper.writelines() (issue #15744).
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@ -2287,6 +2287,28 @@ class TextIOWrapperTest(unittest.TestCase):
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reads += c
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self.assertEqual(reads, "A"*127+"\nB")
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def test_writelines(self):
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l = ['ab', 'cd', 'ef']
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buf = self.BytesIO()
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txt = self.TextIOWrapper(buf)
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txt.writelines(l)
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txt.flush()
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self.assertEqual(buf.getvalue(), b'abcdef')
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def test_writelines_userlist(self):
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l = UserList(['ab', 'cd', 'ef'])
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buf = self.BytesIO()
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txt = self.TextIOWrapper(buf)
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txt.writelines(l)
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txt.flush()
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self.assertEqual(buf.getvalue(), b'abcdef')
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def test_writelines_error(self):
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txt = self.TextIOWrapper(self.BytesIO())
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self.assertRaises(TypeError, txt.writelines, [1, 2, 3])
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self.assertRaises(TypeError, txt.writelines, None)
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self.assertRaises(TypeError, txt.writelines, b'abc')
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def test_issue1395_1(self):
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txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii")
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