920 lines
34 KiB
Python
920 lines
34 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2001,2002 Python Software Foundation
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# csv package unit tests
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import array
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import decimal
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import os
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import string
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import sys
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import tempfile
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import unittest2 as unittest
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from codecs import EncodedFile
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from io import BytesIO
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import unicodecsv as csv
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try:
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# Python 2
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chr = unichr
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except:
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pass
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# pypy and cpython differ under which exception is raised under some
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# circumstances e.g. whether a module is written in C or not.
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py_compat_exc = (TypeError, AttributeError)
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class Test_Csv(unittest.TestCase):
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"""
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Test the underlying C csv parser in ways that are not appropriate
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from the high level interface. Further tests of this nature are done
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in TestDialectRegistry.
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"""
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def _test_arg_valid(self, ctor, arg):
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self.assertRaises(py_compat_exc, ctor)
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self.assertRaises(py_compat_exc, ctor, None)
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self.assertRaises(py_compat_exc, ctor, arg, bad_attr=0)
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self.assertRaises(py_compat_exc, ctor, arg, delimiter=0)
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self.assertRaises(py_compat_exc, ctor, arg, delimiter='XX')
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self.assertRaises(csv.Error, ctor, arg, 'foo')
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self.assertRaises(py_compat_exc, ctor, arg, delimiter=None)
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self.assertRaises(py_compat_exc, ctor, arg, delimiter=1)
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self.assertRaises(py_compat_exc, ctor, arg, quotechar=1)
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self.assertRaises(py_compat_exc, ctor, arg, lineterminator=None)
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self.assertRaises(py_compat_exc, ctor, arg, lineterminator=1)
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self.assertRaises(py_compat_exc, ctor, arg, quoting=None)
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self.assertRaises(py_compat_exc, ctor, arg,
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quoting=csv.QUOTE_ALL, quotechar='')
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self.assertRaises(py_compat_exc, ctor, arg,
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quoting=csv.QUOTE_ALL, quotechar=None)
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def test_reader_arg_valid(self):
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self._test_arg_valid(csv.reader, [])
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def test_writer_arg_valid(self):
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self._test_arg_valid(csv.writer, BytesIO())
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def _test_default_attrs(self, ctor, *args):
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obj = ctor(*args)
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# Check defaults
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self.assertEqual(obj.dialect.delimiter, ',')
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self.assertEqual(obj.dialect.doublequote, True)
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self.assertEqual(obj.dialect.escapechar, None)
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self.assertEqual(obj.dialect.lineterminator, "\r\n")
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self.assertEqual(obj.dialect.quotechar, '"')
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self.assertEqual(obj.dialect.quoting, csv.QUOTE_MINIMAL)
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self.assertEqual(obj.dialect.skipinitialspace, False)
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self.assertEqual(obj.dialect.strict, False)
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# Try deleting or changing attributes (they are read-only)
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self.assertRaises(py_compat_exc, delattr,
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obj.dialect, 'delimiter')
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self.assertRaises(py_compat_exc, setattr,
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obj.dialect, 'delimiter', ':')
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self.assertRaises(py_compat_exc, delattr,
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obj.dialect, 'quoting')
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self.assertRaises(py_compat_exc, setattr,
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obj.dialect, 'quoting', None)
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def test_reader_attrs(self):
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self._test_default_attrs(csv.reader, [])
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def test_writer_attrs(self):
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self._test_default_attrs(csv.writer, BytesIO())
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def _test_kw_attrs(self, ctor, *args):
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# Now try with alternate options
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kwargs = dict(delimiter=':', doublequote=False, escapechar='\\',
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lineterminator='\r', quotechar='*',
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quoting=csv.QUOTE_NONE, skipinitialspace=True,
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strict=True)
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obj = ctor(*args, **kwargs)
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self.assertEqual(obj.dialect.delimiter, ':')
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self.assertEqual(obj.dialect.doublequote, False)
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self.assertEqual(obj.dialect.escapechar, '\\')
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self.assertEqual(obj.dialect.lineterminator, "\r")
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self.assertEqual(obj.dialect.quotechar, '*')
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self.assertEqual(obj.dialect.quoting, csv.QUOTE_NONE)
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self.assertEqual(obj.dialect.skipinitialspace, True)
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self.assertEqual(obj.dialect.strict, True)
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def test_reader_kw_attrs(self):
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self._test_kw_attrs(csv.reader, [])
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def test_writer_kw_attrs(self):
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self._test_kw_attrs(csv.writer, BytesIO())
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def _test_dialect_attrs(self, ctor, *args):
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# Now try with dialect-derived options
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class dialect:
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delimiter = '-'
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doublequote = False
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escapechar = '^'
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lineterminator = '$'
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quotechar = '#'
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quoting = csv.QUOTE_ALL
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skipinitialspace = True
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strict = False
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args = args + (dialect,)
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obj = ctor(*args)
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self.assertEqual(obj.dialect.delimiter, '-')
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self.assertEqual(obj.dialect.doublequote, False)
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self.assertEqual(obj.dialect.escapechar, '^')
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self.assertEqual(obj.dialect.lineterminator, "$")
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self.assertEqual(obj.dialect.quotechar, '#')
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self.assertEqual(obj.dialect.quoting, csv.QUOTE_ALL)
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self.assertEqual(obj.dialect.skipinitialspace, True)
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self.assertEqual(obj.dialect.strict, False)
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def test_reader_dialect_attrs(self):
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self._test_dialect_attrs(csv.reader, [])
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def test_writer_dialect_attrs(self):
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self._test_dialect_attrs(csv.writer, BytesIO())
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def _write_test(self, fields, expect, **kwargs):
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fd, name = tempfile.mkstemp()
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fileobj = os.fdopen(fd, "w+b")
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try:
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writer = csv.writer(fileobj, **kwargs)
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writer.writerow(fields)
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fileobj.seek(0)
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self.assertEqual(fileobj.read(),
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expect + writer.dialect.lineterminator.encode('utf-8'))
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finally:
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fileobj.close()
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os.unlink(name)
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def test_write_arg_valid(self):
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import sys
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pypy3 = hasattr(sys, 'pypy_version_info') and sys.version_info.major == 3
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self.assertRaises(TypeError if pypy3 else csv.Error, self._write_test, None, '')
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self._write_test((), b'')
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self._write_test([None], b'""')
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self.assertRaises(csv.Error, self._write_test,
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[None], None, quoting=csv.QUOTE_NONE)
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# Check that exceptions are passed up the chain
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class BadList:
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def __len__(self):
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return 10
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def __getitem__(self, i):
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if i > 2:
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raise IOError
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self.assertRaises(IOError, self._write_test, BadList(), '')
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class BadItem:
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def __str__(self):
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raise IOError
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self.assertRaises(IOError, self._write_test, [BadItem()], '')
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def test_write_bigfield(self):
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# This exercises the buffer realloc functionality
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bigstring = 'X' * 50000
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self._write_test([bigstring, bigstring],
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b','.join([bigstring.encode('utf-8')] * 2))
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def test_write_quoting(self):
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self._write_test(['a', 1, 'p,q'], b'a,1,"p,q"')
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self.assertRaises(csv.Error,
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self._write_test,
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['a', 1, 'p,q'], b'a,1,p,q',
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quoting=csv.QUOTE_NONE)
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self._write_test(['a', 1, 'p,q'], b'a,1,"p,q"',
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quoting=csv.QUOTE_MINIMAL)
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self._write_test(['a', 1, 'p,q'], b'"a",1,"p,q"',
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quoting=csv.QUOTE_NONNUMERIC)
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self._write_test(['a', 1, 'p,q'], b'"a","1","p,q"',
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quoting=csv.QUOTE_ALL)
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self._write_test(['a\nb', 1], b'"a\nb","1"',
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quoting=csv.QUOTE_ALL)
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def test_write_decimal(self):
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self._write_test(['a', decimal.Decimal("1.1"), 'p,q'], b'"a",1.1,"p,q"',
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quoting=csv.QUOTE_NONNUMERIC)
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def test_write_escape(self):
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self._write_test(['a', 1, 'p,q'], b'a,1,"p,q"',
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escapechar='\\')
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self.assertRaises(csv.Error,
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self._write_test,
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['a', 1, 'p,"q"'], b'a,1,"p,\\"q\\""',
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escapechar=None, doublequote=False)
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self._write_test(['a', 1, 'p,"q"'], b'a,1,"p,\\"q\\""',
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escapechar='\\', doublequote=False)
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self._write_test(['"'], b'""""',
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escapechar='\\', quoting=csv.QUOTE_MINIMAL)
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self._write_test(['"'], b'\\"',
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escapechar='\\', quoting=csv.QUOTE_MINIMAL,
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doublequote=False)
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self._write_test(['"'], b'\\"',
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escapechar='\\', quoting=csv.QUOTE_NONE)
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self._write_test(['a', 1, 'p,q'], b'a,1,p\\,q',
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escapechar='\\', quoting=csv.QUOTE_NONE)
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def test_writerows(self):
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class BrokenFile:
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def write(self, buf):
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raise IOError
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writer = csv.writer(BrokenFile())
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self.assertRaises(IOError, writer.writerows, [['a']])
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fd, name = tempfile.mkstemp()
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fileobj = os.fdopen(fd, "w+b")
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try:
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writer = csv.writer(fileobj)
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self.assertRaises(TypeError, writer.writerows, None)
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writer.writerows([['a', 'b'], ['c', 'd']])
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fileobj.seek(0)
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self.assertEqual(fileobj.read(), b"a,b\r\nc,d\r\n")
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finally:
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fileobj.close()
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os.unlink(name)
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def _read_test(self, input, expect, **kwargs):
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reader = csv.reader(input, **kwargs)
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result = list(reader)
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self.assertEqual(result, expect)
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def test_read_oddinputs(self):
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self._read_test([], [])
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self._read_test([b''], [[]])
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self.assertRaises(csv.Error, self._read_test,
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[b'"ab"c'], None, strict=1)
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# cannot handle null bytes for the moment
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self.assertRaises(csv.Error, self._read_test,
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[b'ab\0c'], None, strict=1)
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self._read_test([b'"ab"c'], [['abc']], doublequote=0)
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def test_read_eol(self):
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self._read_test([b'a,b'], [['a', 'b']])
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self._read_test([b'a,b\n'], [['a', 'b']])
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self._read_test([b'a,b\r\n'], [['a', 'b']])
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self._read_test([b'a,b\r'], [['a', 'b']])
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self.assertRaises(csv.Error, self._read_test, [b'a,b\rc,d'], [])
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self.assertRaises(csv.Error, self._read_test, [b'a,b\nc,d'], [])
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self.assertRaises(csv.Error, self._read_test, [b'a,b\r\nc,d'], [])
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def test_read_escape(self):
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self._read_test([b'a,\\b,c'], [['a', 'b', 'c']], escapechar='\\')
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self._read_test([b'a,b\\,c'], [['a', 'b,c']], escapechar='\\')
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self._read_test([b'a,"b\\,c"'], [['a', 'b,c']], escapechar='\\')
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self._read_test([b'a,"b,\\c"'], [['a', 'b,c']], escapechar='\\')
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self._read_test([b'a,"b,c\\""'], [['a', 'b,c"']], escapechar='\\')
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self._read_test([b'a,"b,c"\\'], [['a', 'b,c\\']], escapechar='\\')
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def test_read_quoting(self):
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self._read_test([b'1,",3,",5'], [['1', ',3,', '5']])
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self._read_test([b'1,",3,",5'], [['1', '"', '3', '"', '5']],
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quotechar=None, escapechar='\\')
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self._read_test([b'1,",3,",5'], [['1', '"', '3', '"', '5']],
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quoting=csv.QUOTE_NONE, escapechar='\\')
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# will this fail where locale uses comma for decimals?
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self._read_test([b',3,"5",7.3, 9'], [['', 3, '5', 7.3, 9]],
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quoting=csv.QUOTE_NONNUMERIC)
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self._read_test([b'"a\nb", 7'], [['a\nb', ' 7']])
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self.assertRaises(ValueError, self._read_test,
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[b'abc,3'], [[]],
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quoting=csv.QUOTE_NONNUMERIC)
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def test_read_linenum(self):
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for r in (csv.reader([b'line,1', b'line,2', b'line,3']),
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csv.DictReader([b'line,1', b'line,2', b'line,3'],
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fieldnames=['a', 'b', 'c'])):
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self.assertEqual(r.line_num, 0)
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next(r)
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self.assertEqual(r.line_num, 1)
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next(r)
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self.assertEqual(r.line_num, 2)
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next(r)
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self.assertEqual(r.line_num, 3)
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self.assertRaises(StopIteration, next, r)
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self.assertEqual(r.line_num, 3)
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def test_roundtrip_quoteed_newlines(self):
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fd, name = tempfile.mkstemp()
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fileobj = os.fdopen(fd, "w+b")
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try:
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writer = csv.writer(fileobj)
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self.assertRaises(TypeError, writer.writerows, None)
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rows = [['a\nb', 'b'], ['c', 'x\r\nd']]
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writer.writerows(rows)
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fileobj.seek(0)
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for i, row in enumerate(csv.reader(fileobj)):
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self.assertEqual(row, rows[i])
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finally:
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fileobj.close()
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os.unlink(name)
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class TestDialectRegistry(unittest.TestCase):
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def test_registry_badargs(self):
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self.assertRaises(TypeError, csv.list_dialects, None)
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self.assertRaises(TypeError, csv.get_dialect)
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self.assertRaises(csv.Error, csv.get_dialect, None)
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self.assertRaises(csv.Error, csv.get_dialect, "nonesuch")
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self.assertRaises(TypeError, csv.unregister_dialect)
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self.assertRaises(csv.Error, csv.unregister_dialect, None)
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self.assertRaises(csv.Error, csv.unregister_dialect, "nonesuch")
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self.assertRaises(TypeError, csv.register_dialect, None)
|
||
|
|
self.assertRaises(TypeError, csv.register_dialect, None, None)
|
||
|
|
self.assertRaises(TypeError, csv.register_dialect, "nonesuch", 0, 0)
|
||
|
|
self.assertRaises(TypeError, csv.register_dialect, "nonesuch",
|
||
|
|
badargument=None)
|
||
|
|
self.assertRaises(TypeError, csv.register_dialect, "nonesuch",
|
||
|
|
quoting=None)
|
||
|
|
self.assertRaises(TypeError, csv.register_dialect, [])
|
||
|
|
|
||
|
|
def test_registry(self):
|
||
|
|
class myexceltsv(csv.excel):
|
||
|
|
delimiter = "\t"
|
||
|
|
name = "myexceltsv"
|
||
|
|
expected_dialects = csv.list_dialects() + [name]
|
||
|
|
expected_dialects.sort()
|
||
|
|
csv.register_dialect(name, myexceltsv)
|
||
|
|
try:
|
||
|
|
self.assertEqual(csv.get_dialect(name).delimiter, '\t')
|
||
|
|
got_dialects = csv.list_dialects()
|
||
|
|
got_dialects.sort()
|
||
|
|
self.assertEqual(expected_dialects, got_dialects)
|
||
|
|
finally:
|
||
|
|
csv.unregister_dialect(name)
|
||
|
|
|
||
|
|
def test_register_kwargs(self):
|
||
|
|
name = 'fedcba'
|
||
|
|
csv.register_dialect(name, delimiter=';')
|
||
|
|
try:
|
||
|
|
self.assertNotEqual(csv.get_dialect(name).delimiter, '\t')
|
||
|
|
self.assertEqual(list(csv.reader([b'X;Y;Z'], name)), [[u'X', u'Y', u'Z']])
|
||
|
|
finally:
|
||
|
|
csv.unregister_dialect(name)
|
||
|
|
|
||
|
|
def test_incomplete_dialect(self):
|
||
|
|
class myexceltsv(csv.Dialect):
|
||
|
|
delimiter = "\t"
|
||
|
|
self.assertRaises(csv.Error, myexceltsv)
|
||
|
|
|
||
|
|
def test_space_dialect(self):
|
||
|
|
class space(csv.excel):
|
||
|
|
delimiter = " "
|
||
|
|
quoting = csv.QUOTE_NONE
|
||
|
|
escapechar = "\\"
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"abc def\nc1ccccc1 benzene\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
rdr = csv.reader(fileobj, dialect=space())
|
||
|
|
self.assertEqual(next(rdr), ["abc", "def"])
|
||
|
|
self.assertEqual(next(rdr), ["c1ccccc1", "benzene"])
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_dialect_apply(self):
|
||
|
|
class testA(csv.excel):
|
||
|
|
delimiter = "\t"
|
||
|
|
|
||
|
|
class testB(csv.excel):
|
||
|
|
delimiter = ":"
|
||
|
|
|
||
|
|
class testC(csv.excel):
|
||
|
|
delimiter = "|"
|
||
|
|
|
||
|
|
csv.register_dialect('testC', testC)
|
||
|
|
try:
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj)
|
||
|
|
writer.writerow([1, 2, 3])
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), b"1,2,3\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, testA)
|
||
|
|
writer.writerow([1, 2, 3])
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), b"1\t2\t3\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect=testB())
|
||
|
|
writer.writerow([1, 2, 3])
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), b"1:2:3\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect='testC')
|
||
|
|
writer.writerow([1, 2, 3])
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), b"1|2|3\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect=testA, delimiter=';')
|
||
|
|
writer.writerow([1, 2, 3])
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), b"1;2;3\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
finally:
|
||
|
|
csv.unregister_dialect('testC')
|
||
|
|
|
||
|
|
def test_bad_dialect(self):
|
||
|
|
# Unknown parameter
|
||
|
|
self.assertRaises(TypeError, csv.reader, [], bad_attr=0)
|
||
|
|
# Bad values
|
||
|
|
self.assertRaises(TypeError, csv.reader, [], delimiter=None)
|
||
|
|
self.assertRaises(TypeError, csv.reader, [], quoting=-1)
|
||
|
|
self.assertRaises(TypeError, csv.reader, [], quoting=100)
|
||
|
|
|
||
|
|
|
||
|
|
class TestCsvBase(unittest.TestCase):
|
||
|
|
def readerAssertEqual(self, input, expected_result):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(input)
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.reader(fileobj, dialect=self.dialect)
|
||
|
|
fields = list(reader)
|
||
|
|
self.assertEqual(fields, expected_result)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def writerAssertEqual(self, input, expected_result):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect=self.dialect)
|
||
|
|
writer.writerows(input)
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), expected_result)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
|
||
|
|
class TestDialectExcel(TestCsvBase):
|
||
|
|
dialect = 'excel'
|
||
|
|
|
||
|
|
def test_single(self):
|
||
|
|
self.readerAssertEqual(b'abc', [['abc']])
|
||
|
|
|
||
|
|
def test_simple(self):
|
||
|
|
self.readerAssertEqual(b'1,2,3,4,5', [['1', '2', '3', '4', '5']])
|
||
|
|
|
||
|
|
def test_blankline(self):
|
||
|
|
self.readerAssertEqual(b'', [])
|
||
|
|
|
||
|
|
def test_empty_fields(self):
|
||
|
|
self.readerAssertEqual(b',', [['', '']])
|
||
|
|
|
||
|
|
def test_singlequoted(self):
|
||
|
|
self.readerAssertEqual(b'""', [['']])
|
||
|
|
|
||
|
|
def test_singlequoted_left_empty(self):
|
||
|
|
self.readerAssertEqual(b'"",', [['', '']])
|
||
|
|
|
||
|
|
def test_singlequoted_right_empty(self):
|
||
|
|
self.readerAssertEqual(b',""', [['', '']])
|
||
|
|
|
||
|
|
def test_single_quoted_quote(self):
|
||
|
|
self.readerAssertEqual(b'""""', [['"']])
|
||
|
|
|
||
|
|
def test_quoted_quotes(self):
|
||
|
|
self.readerAssertEqual(b'""""""', [['""']])
|
||
|
|
|
||
|
|
def test_inline_quote(self):
|
||
|
|
self.readerAssertEqual(b'a""b', [['a""b']])
|
||
|
|
|
||
|
|
def test_inline_quotes(self):
|
||
|
|
self.readerAssertEqual(b'a"b"c', [['a"b"c']])
|
||
|
|
|
||
|
|
def test_quotes_and_more(self):
|
||
|
|
# Excel would never write a field containing '"a"b', but when
|
||
|
|
# reading one, it will return 'ab'.
|
||
|
|
self.readerAssertEqual(b'"a"b', [['ab']])
|
||
|
|
|
||
|
|
def test_lone_quote(self):
|
||
|
|
self.readerAssertEqual(b'a"b', [['a"b']])
|
||
|
|
|
||
|
|
def test_quote_and_quote(self):
|
||
|
|
# Excel would never write a field containing '"a" "b"', but when
|
||
|
|
# reading one, it will return 'a "b"'.
|
||
|
|
self.readerAssertEqual(b'"a" "b"', [['a "b"']])
|
||
|
|
|
||
|
|
def test_space_and_quote(self):
|
||
|
|
self.readerAssertEqual(b' "a"', [[' "a"']])
|
||
|
|
|
||
|
|
def test_quoted(self):
|
||
|
|
self.readerAssertEqual(b'1,2,3,"I think, therefore I am",5,6',
|
||
|
|
[['1', '2', '3',
|
||
|
|
'I think, therefore I am',
|
||
|
|
'5', '6']])
|
||
|
|
|
||
|
|
def test_quoted_quote(self):
|
||
|
|
value = b'1,2,3,"""I see,"" said the blind man","as he picked up his hammer and saw"'
|
||
|
|
self.readerAssertEqual(value,
|
||
|
|
[['1', '2', '3',
|
||
|
|
'"I see," said the blind man',
|
||
|
|
'as he picked up his hammer and saw']])
|
||
|
|
|
||
|
|
def test_quoted_nl(self):
|
||
|
|
input = b'''\
|
||
|
|
1,2,3,"""I see,""
|
||
|
|
said the blind man","as he picked up his
|
||
|
|
hammer and saw"
|
||
|
|
9,8,7,6'''
|
||
|
|
self.readerAssertEqual(input,
|
||
|
|
[['1', '2', '3',
|
||
|
|
'"I see,"\nsaid the blind man',
|
||
|
|
'as he picked up his\nhammer and saw'],
|
||
|
|
['9', '8', '7', '6']])
|
||
|
|
|
||
|
|
def test_dubious_quote(self):
|
||
|
|
self.readerAssertEqual(b'12,12,1",', [['12', '12', '1"', '']])
|
||
|
|
|
||
|
|
def test_null(self):
|
||
|
|
self.writerAssertEqual([], b'')
|
||
|
|
|
||
|
|
def test_single_writer(self):
|
||
|
|
self.writerAssertEqual([['abc']], b'abc\r\n')
|
||
|
|
|
||
|
|
def test_simple_writer(self):
|
||
|
|
self.writerAssertEqual([[1, 2, 'abc', 3, 4]],
|
||
|
|
b'1,2,abc,3,4\r\n')
|
||
|
|
|
||
|
|
def test_quotes(self):
|
||
|
|
self.writerAssertEqual([[1, 2, 'a"bc"', 3, 4]],
|
||
|
|
b'1,2,"a""bc""",3,4\r\n')
|
||
|
|
|
||
|
|
def test_quote_fieldsep(self):
|
||
|
|
self.writerAssertEqual([['abc,def']],
|
||
|
|
b'"abc,def"\r\n')
|
||
|
|
|
||
|
|
def test_newlines(self):
|
||
|
|
self.writerAssertEqual([[1, 2, 'a\nbc', 3, 4]],
|
||
|
|
b'1,2,"a\nbc",3,4\r\n')
|
||
|
|
|
||
|
|
|
||
|
|
class EscapedExcel(csv.excel):
|
||
|
|
quoting = csv.QUOTE_NONE
|
||
|
|
escapechar = '\\'
|
||
|
|
|
||
|
|
|
||
|
|
class TestEscapedExcel(TestCsvBase):
|
||
|
|
dialect = EscapedExcel()
|
||
|
|
|
||
|
|
def test_escape_fieldsep(self):
|
||
|
|
self.writerAssertEqual([['abc,def']], b'abc\\,def\r\n')
|
||
|
|
|
||
|
|
def test_read_escape_fieldsep(self):
|
||
|
|
self.readerAssertEqual(b'abc\\,def\r\n', [['abc,def']])
|
||
|
|
|
||
|
|
|
||
|
|
class QuotedEscapedExcel(csv.excel):
|
||
|
|
quoting = csv.QUOTE_NONNUMERIC
|
||
|
|
escapechar = '\\'
|
||
|
|
|
||
|
|
|
||
|
|
class TestQuotedEscapedExcel(TestCsvBase):
|
||
|
|
dialect = QuotedEscapedExcel()
|
||
|
|
|
||
|
|
def test_write_escape_fieldsep(self):
|
||
|
|
self.writerAssertEqual([['abc,def']], b'"abc,def"\r\n')
|
||
|
|
|
||
|
|
def test_read_escape_fieldsep(self):
|
||
|
|
self.readerAssertEqual(b'"abc\\,def"\r\n', [['abc,def']])
|
||
|
|
|
||
|
|
|
||
|
|
class TestDictFields(unittest.TestCase):
|
||
|
|
# "long" means the row is longer than the number of fieldnames
|
||
|
|
# "short" means there are fewer elements in the row than fieldnames
|
||
|
|
def test_write_simple_dict(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = open(name, 'w+b')
|
||
|
|
try:
|
||
|
|
writer = csv.DictWriter(fileobj, fieldnames=["f1", "f2", "f3"])
|
||
|
|
writer.writeheader()
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.readline(), b"f1,f2,f3\r\n")
|
||
|
|
writer.writerow({"f1": 10, "f3": "abc"})
|
||
|
|
fileobj.seek(0)
|
||
|
|
fileobj.readline() # header
|
||
|
|
self.assertEqual(fileobj.read(), b"10,,abc\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_write_unicode_header_dict(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = open(name, 'w+b')
|
||
|
|
try:
|
||
|
|
writer = csv.DictWriter(fileobj, fieldnames=[u"ñ", u"ö"])
|
||
|
|
writer.writeheader()
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.readline().decode('utf-8'), u"ñ,ö\r\n")
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_write_no_fields(self):
|
||
|
|
fileobj = BytesIO()
|
||
|
|
self.assertRaises(TypeError, csv.DictWriter, fileobj)
|
||
|
|
|
||
|
|
def test_read_dict_fields(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"1,2,abc\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj,
|
||
|
|
fieldnames=["f1", "f2", "f3"])
|
||
|
|
self.assertEqual(next(reader),
|
||
|
|
{"f1": '1', "f2": '2', "f3": 'abc'})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_dict_no_fieldnames(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"f1,f2,f3\r\n1,2,abc\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj)
|
||
|
|
self.assertEqual(reader.fieldnames,
|
||
|
|
["f1", "f2", "f3"])
|
||
|
|
self.assertEqual(next(reader),
|
||
|
|
{"f1": '1', "f2": '2', "f3": 'abc'})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
# Two test cases to make sure existing ways of implicitly setting
|
||
|
|
# fieldnames continue to work. Both arise from discussion in issue3436.
|
||
|
|
def test_read_dict_fieldnames_from_file(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
f = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
f.write(b"f1,f2,f3\r\n1,2,abc\r\n")
|
||
|
|
f.seek(0)
|
||
|
|
reader = csv.DictReader(f, fieldnames=next(csv.reader(f)))
|
||
|
|
self.assertEqual(reader.fieldnames,
|
||
|
|
["f1", "f2", "f3"])
|
||
|
|
self.assertEqual(next(reader),
|
||
|
|
{"f1": '1', "f2": '2', "f3": 'abc'})
|
||
|
|
finally:
|
||
|
|
f.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_dict_fieldnames_chain(self):
|
||
|
|
import itertools
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
f = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
f.write(b"f1,f2,f3\r\n1,2,abc\r\n")
|
||
|
|
f.seek(0)
|
||
|
|
reader = csv.DictReader(f)
|
||
|
|
first = next(reader)
|
||
|
|
for row in itertools.chain([first], reader):
|
||
|
|
self.assertEqual(reader.fieldnames, ["f1", "f2", "f3"])
|
||
|
|
self.assertEqual(row, {"f1": '1', "f2": '2', "f3": 'abc'})
|
||
|
|
finally:
|
||
|
|
f.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_long(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"1,2,abc,4,5,6\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj,
|
||
|
|
fieldnames=["f1", "f2"])
|
||
|
|
self.assertEqual(next(reader), {"f1": '1', "f2": '2',
|
||
|
|
None: ["abc", "4", "5", "6"]})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_long_with_rest(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"1,2,abc,4,5,6\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj,
|
||
|
|
fieldnames=["f1", "f2"], restkey="_rest")
|
||
|
|
self.assertEqual(next(reader), {"f1": '1', "f2": '2',
|
||
|
|
"_rest": ["abc", "4", "5", "6"]})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_long_with_rest_no_fieldnames(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"f1,f2\r\n1,2,abc,4,5,6\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj, restkey="_rest")
|
||
|
|
self.assertEqual(reader.fieldnames, ["f1", "f2"])
|
||
|
|
self.assertEqual(next(reader), {"f1": '1', "f2": '2',
|
||
|
|
"_rest": ["abc", "4", "5", "6"]})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_short(self):
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
fileobj.write(b"1,2,abc,4,5,6\r\n1,2,abc\r\n")
|
||
|
|
fileobj.seek(0)
|
||
|
|
reader = csv.DictReader(fileobj,
|
||
|
|
fieldnames="1 2 3 4 5 6".split(),
|
||
|
|
restval="DEFAULT")
|
||
|
|
self.assertEqual(next(reader), {"1": '1', "2": '2', "3": 'abc',
|
||
|
|
"4": '4', "5": '5', "6": '6'})
|
||
|
|
self.assertEqual(next(reader), {"1": '1', "2": '2', "3": 'abc',
|
||
|
|
"4": 'DEFAULT', "5": 'DEFAULT',
|
||
|
|
"6": 'DEFAULT'})
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_read_multi(self):
|
||
|
|
sample = [
|
||
|
|
b'2147483648,43.0e12,17,abc,def\r\n',
|
||
|
|
b'147483648,43.0e2,17,abc,def\r\n',
|
||
|
|
b'47483648,43.0,170,abc,def\r\n'
|
||
|
|
]
|
||
|
|
|
||
|
|
reader = csv.DictReader(sample,
|
||
|
|
fieldnames="i1 float i2 s1 s2".split())
|
||
|
|
self.assertEqual(next(reader), {"i1": '2147483648',
|
||
|
|
"float": '43.0e12',
|
||
|
|
"i2": '17',
|
||
|
|
"s1": 'abc',
|
||
|
|
"s2": 'def'})
|
||
|
|
|
||
|
|
def test_read_with_blanks(self):
|
||
|
|
reader = csv.DictReader([b"1,2,abc,4,5,6\r\n", b"\r\n",
|
||
|
|
b"1,2,abc,4,5,6\r\n"],
|
||
|
|
fieldnames="1 2 3 4 5 6".split())
|
||
|
|
self.assertEqual(next(reader), {"1": '1', "2": '2', "3": 'abc',
|
||
|
|
"4": '4', "5": '5', "6": '6'})
|
||
|
|
self.assertEqual(next(reader), {"1": '1', "2": '2', "3": 'abc',
|
||
|
|
"4": '4', "5": '5', "6": '6'})
|
||
|
|
|
||
|
|
def test_read_semi_sep(self):
|
||
|
|
reader = csv.DictReader([b"1;2;abc;4;5;6\r\n"],
|
||
|
|
fieldnames="1 2 3 4 5 6".split(),
|
||
|
|
delimiter=';')
|
||
|
|
self.assertEqual(next(reader), {"1": '1', "2": '2', "3": 'abc',
|
||
|
|
"4": '4', "5": '5', "6": '6'})
|
||
|
|
|
||
|
|
def test_empty_file(self):
|
||
|
|
csv.DictReader(BytesIO())
|
||
|
|
|
||
|
|
class TestArrayWrites(unittest.TestCase):
|
||
|
|
def test_int_write(self):
|
||
|
|
contents = [(20-i) for i in range(20)]
|
||
|
|
a = array.array('i', contents)
|
||
|
|
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect="excel")
|
||
|
|
writer.writerow(a)
|
||
|
|
expected = b",".join([str(i).encode('utf-8') for i in a])+b"\r\n"
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), expected)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_double_write(self):
|
||
|
|
contents = [(20-i)*0.1 for i in range(20)]
|
||
|
|
a = array.array('d', contents)
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect="excel")
|
||
|
|
writer.writerow(a)
|
||
|
|
float_repr = str
|
||
|
|
if sys.version_info >= (2, 7, 3):
|
||
|
|
float_repr = repr
|
||
|
|
expected = b",".join([float_repr(i).encode('utf-8') for i in a])+b"\r\n"
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), expected)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_float_write(self):
|
||
|
|
contents = [(20-i)*0.1 for i in range(20)]
|
||
|
|
a = array.array('f', contents)
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect="excel")
|
||
|
|
writer.writerow(a)
|
||
|
|
float_repr = str
|
||
|
|
if sys.version_info >= (2, 7, 3):
|
||
|
|
float_repr = repr
|
||
|
|
expected = b",".join([float_repr(i).encode('utf-8') for i in a])+b"\r\n"
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), expected)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
def test_char_write(self):
|
||
|
|
a = string.ascii_letters
|
||
|
|
fd, name = tempfile.mkstemp()
|
||
|
|
fileobj = os.fdopen(fd, "w+b")
|
||
|
|
try:
|
||
|
|
writer = csv.writer(fileobj, dialect="excel")
|
||
|
|
writer.writerow(a)
|
||
|
|
expected = ",".join(a).encode('utf-8')+b"\r\n"
|
||
|
|
fileobj.seek(0)
|
||
|
|
self.assertEqual(fileobj.read(), expected)
|
||
|
|
finally:
|
||
|
|
fileobj.close()
|
||
|
|
os.unlink(name)
|
||
|
|
|
||
|
|
|
||
|
|
class TestUnicode(unittest.TestCase):
|
||
|
|
def test_unicode_read(self):
|
||
|
|
f = EncodedFile(BytesIO((u"Martin von Löwis,"
|
||
|
|
u"Marc André Lemburg,"
|
||
|
|
u"Guido van Rossum,"
|
||
|
|
u"François Pinard\r\n").encode('iso-8859-1')),
|
||
|
|
data_encoding='iso-8859-1')
|
||
|
|
reader = csv.reader(f, encoding='iso-8859-1')
|
||
|
|
self.assertEqual(list(reader), [[u"Martin von Löwis",
|
||
|
|
u"Marc André Lemburg",
|
||
|
|
u"Guido van Rossum",
|
||
|
|
u"François Pinard"]])
|
||
|
|
|
||
|
|
|
||
|
|
class TestUnicodeErrors(unittest.TestCase):
|
||
|
|
def test_encode_error(self):
|
||
|
|
fd = BytesIO()
|
||
|
|
writer = csv.writer(fd, encoding='cp1252', errors='xmlcharrefreplace')
|
||
|
|
writer.writerow(['hello', chr(2603)])
|
||
|
|
self.assertEqual(fd.getvalue(), b'hello,ਫ\r\n')
|
||
|
|
|
||
|
|
def test_encode_error_dictwriter(self):
|
||
|
|
fd = BytesIO()
|
||
|
|
dw = csv.DictWriter(fd, ['col1'],
|
||
|
|
encoding='cp1252', errors='xmlcharrefreplace')
|
||
|
|
dw.writerow({'col1': chr(2604)})
|
||
|
|
self.assertEqual(fd.getvalue(), b'ਬ\r\n')
|
||
|
|
|
||
|
|
def test_decode_error(self):
|
||
|
|
"""Make sure the specified error-handling mode is obeyed on readers."""
|
||
|
|
file = EncodedFile(BytesIO(u'Löwis,2,3'.encode('iso-8859-1')),
|
||
|
|
data_encoding='iso-8859-1')
|
||
|
|
reader = csv.reader(file, encoding='ascii', errors='ignore')
|
||
|
|
self.assertEqual(list(reader)[0][0], 'Lwis')
|
||
|
|
|
||
|
|
def test_decode_error_dictreader(self):
|
||
|
|
"""Make sure the error-handling mode is obeyed on DictReaders."""
|
||
|
|
file = EncodedFile(BytesIO(u'name,height,weight\nLöwis,2,3'.encode('iso-8859-1')),
|
||
|
|
data_encoding='iso-8859-1')
|
||
|
|
reader = csv.DictReader(file, encoding='ascii', errors='ignore')
|
||
|
|
self.assertEqual(list(reader)[0]['name'], 'Lwis')
|