mirror of https://github.com/python/cpython
1068 lines
40 KiB
Python
1068 lines
40 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2001,2002 Python Software Foundation
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# csv package unit tests
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import sys
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import os
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import unittest
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from StringIO import StringIO
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import tempfile
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import csv
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import gc
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import io
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from test import test_support
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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(TypeError, ctor)
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self.assertRaises(TypeError, ctor, None)
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self.assertRaises(TypeError, ctor, arg, bad_attr = 0)
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self.assertRaises(TypeError, ctor, arg, delimiter = 0)
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self.assertRaises(TypeError, ctor, arg, delimiter = 'XX')
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self.assertRaises(csv.Error, ctor, arg, 'foo')
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self.assertRaises(TypeError, ctor, arg, delimiter=None)
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self.assertRaises(TypeError, ctor, arg, delimiter=1)
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self.assertRaises(TypeError, ctor, arg, quotechar=1)
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self.assertRaises(TypeError, ctor, arg, lineterminator=None)
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self.assertRaises(TypeError, ctor, arg, lineterminator=1)
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self.assertRaises(TypeError, ctor, arg, quoting=None)
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self.assertRaises(TypeError, ctor, arg,
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quoting=csv.QUOTE_ALL, quotechar='')
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self.assertRaises(TypeError, 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, StringIO())
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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(TypeError, delattr, obj.dialect, 'delimiter')
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self.assertRaises(TypeError, setattr, obj.dialect, 'delimiter', ':')
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self.assertRaises(AttributeError, delattr, obj.dialect, 'quoting')
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self.assertRaises(AttributeError, setattr, obj.dialect,
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'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, StringIO())
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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, StringIO())
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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, StringIO())
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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)
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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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self.assertRaises(csv.Error, self._write_test, None, '')
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self._write_test((), '')
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self._write_test([None], '""')
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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], '%s,%s' % \
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(bigstring, bigstring))
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def test_write_quoting(self):
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self._write_test(['a',1,'p,q'], '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'], 'a,1,p,q',
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quoting = csv.QUOTE_NONE)
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self._write_test(['a',1,'p,q'], 'a,1,"p,q"',
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quoting = csv.QUOTE_MINIMAL)
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self._write_test(['a',1,'p,q'], '"a",1,"p,q"',
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quoting = csv.QUOTE_NONNUMERIC)
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self._write_test(['a',1,'p,q'], '"a","1","p,q"',
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quoting = csv.QUOTE_ALL)
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self._write_test(['a\nb',1], '"a\nb","1"',
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quoting = csv.QUOTE_ALL)
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def test_write_escape(self):
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self._write_test(['a',1,'p,q'], '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"'], 'a,1,"p,\\"q\\""',
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escapechar=None, doublequote=False)
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self._write_test(['a',1,'p,"q"'], 'a,1,"p,\\"q\\""',
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escapechar='\\', doublequote = False)
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self._write_test(['"'], '""""',
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escapechar='\\', quoting = csv.QUOTE_MINIMAL)
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self._write_test(['"'], '\\"',
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escapechar='\\', quoting = csv.QUOTE_MINIMAL,
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doublequote = False)
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self._write_test(['"'], '\\"',
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escapechar='\\', quoting = csv.QUOTE_NONE)
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self._write_test(['a',1,'p,q'], '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(), "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 test_write_float(self):
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# Issue 13573: loss of precision because csv.writer
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# uses str() for floats instead of repr()
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orig_row = [1.234567890123, 1.0/7.0, 'abc']
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f = StringIO()
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c = csv.writer(f, quoting=csv.QUOTE_NONNUMERIC)
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c.writerow(orig_row)
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f.seek(0)
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c = csv.reader(f, quoting=csv.QUOTE_NONNUMERIC)
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new_row = next(c)
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self.assertEqual(orig_row, new_row)
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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([''], [[]])
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self.assertRaises(csv.Error, self._read_test,
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['"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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['ab\0c'], None, strict = 1)
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self._read_test(['"ab"c'], [['abc']], doublequote = 0)
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def test_read_eol(self):
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self._read_test(['a,b'], [['a','b']])
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self._read_test(['a,b\n'], [['a','b']])
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self._read_test(['a,b\r\n'], [['a','b']])
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self._read_test(['a,b\r'], [['a','b']])
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self.assertRaises(csv.Error, self._read_test, ['a,b\rc,d'], [])
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self.assertRaises(csv.Error, self._read_test, ['a,b\nc,d'], [])
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self.assertRaises(csv.Error, self._read_test, ['a,b\r\nc,d'], [])
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def test_read_escape(self):
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self._read_test(['a,\\b,c'], [['a', 'b', 'c']], escapechar='\\')
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self._read_test(['a,b\\,c'], [['a', 'b,c']], escapechar='\\')
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self._read_test(['a,"b\\,c"'], [['a', 'b,c']], escapechar='\\')
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self._read_test(['a,"b,\\c"'], [['a', 'b,c']], escapechar='\\')
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self._read_test(['a,"b,c\\""'], [['a', 'b,c"']], escapechar='\\')
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self._read_test(['a,"b,c"\\'], [['a', 'b,c\\']], escapechar='\\')
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def test_read_quoting(self):
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self._read_test(['1,",3,",5'], [['1', ',3,', '5']])
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self._read_test(['1,",3,",5'], [['1', '"', '3', '"', '5']],
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quotechar=None, escapechar='\\')
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self._read_test(['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([',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(['"a\nb", 7'], [['a\nb', ' 7']])
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self.assertRaises(ValueError, self._read_test,
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['abc,3'], [[]],
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quoting=csv.QUOTE_NONNUMERIC)
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def test_read_bigfield(self):
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# This exercises the buffer realloc functionality and field size
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# limits.
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limit = csv.field_size_limit()
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try:
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size = 50000
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bigstring = 'X' * size
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bigline = '%s,%s' % (bigstring, bigstring)
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self._read_test([bigline], [[bigstring, bigstring]])
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csv.field_size_limit(size)
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self._read_test([bigline], [[bigstring, bigstring]])
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self.assertEqual(csv.field_size_limit(), size)
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csv.field_size_limit(size-1)
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self.assertRaises(csv.Error, self._read_test, [bigline], [])
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self.assertRaises(TypeError, csv.field_size_limit, None)
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self.assertRaises(TypeError, csv.field_size_limit, 1, None)
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finally:
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csv.field_size_limit(limit)
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def test_read_linenum(self):
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for r in (csv.reader(['line,1', 'line,2', 'line,3']),
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csv.DictReader(['line,1', 'line,2', 'line,3'],
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fieldnames=['a', 'b', 'c'])):
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self.assertEqual(r.line_num, 0)
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r.next()
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self.assertEqual(r.line_num, 1)
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r.next()
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self.assertEqual(r.line_num, 2)
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r.next()
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self.assertEqual(r.line_num, 3)
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self.assertRaises(StopIteration, r.next)
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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)
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self.assertRaises(TypeError, csv.register_dialect, None, None)
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self.assertRaises(TypeError, csv.register_dialect, "nonesuch", 0, 0)
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self.assertRaises(TypeError, csv.register_dialect, "nonesuch",
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badargument=None)
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self.assertRaises(TypeError, csv.register_dialect, "nonesuch",
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quoting=None)
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self.assertRaises(TypeError, csv.register_dialect, [])
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def test_registry(self):
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class myexceltsv(csv.excel):
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delimiter = "\t"
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name = "myexceltsv"
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expected_dialects = csv.list_dialects() + [name]
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expected_dialects.sort()
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csv.register_dialect(name, myexceltsv)
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self.addCleanup(csv.unregister_dialect, name)
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self.assertEqual(csv.get_dialect(name).delimiter, '\t')
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got_dialects = sorted(csv.list_dialects())
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self.assertEqual(expected_dialects, got_dialects)
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def test_register_kwargs(self):
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name = 'fedcba'
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csv.register_dialect(name, delimiter=';')
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self.addCleanup(csv.unregister_dialect, name)
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self.assertEqual(csv.get_dialect(name).delimiter, ';')
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self.assertEqual([['X', 'Y', 'Z']], list(csv.reader(['X;Y;Z'], name)))
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def test_incomplete_dialect(self):
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class myexceltsv(csv.Dialect):
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delimiter = "\t"
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self.assertRaises(csv.Error, myexceltsv)
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def test_space_dialect(self):
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class space(csv.excel):
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delimiter = " "
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quoting = csv.QUOTE_NONE
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escapechar = "\\"
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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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fileobj.write("abc def\nc1ccccc1 benzene\n")
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fileobj.seek(0)
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rdr = csv.reader(fileobj, dialect=space())
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self.assertEqual(rdr.next(), ["abc", "def"])
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self.assertEqual(rdr.next(), ["c1ccccc1", "benzene"])
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finally:
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fileobj.close()
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os.unlink(name)
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||
|
||
def test_dialect_apply(self):
|
||
class testA(csv.excel):
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delimiter = "\t"
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||
class testB(csv.excel):
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||
delimiter = ":"
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||
class testC(csv.excel):
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delimiter = "|"
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csv.register_dialect('testC', testC)
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||
try:
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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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writer.writerow([1,2,3])
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fileobj.seek(0)
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||
self.assertEqual(fileobj.read(), "1,2,3\r\n")
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||
finally:
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||
fileobj.close()
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||
os.unlink(name)
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||
|
||
fd, name = tempfile.mkstemp()
|
||
fileobj = os.fdopen(fd, "w+b")
|
||
try:
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||
writer = csv.writer(fileobj, testA)
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||
writer.writerow([1,2,3])
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||
fileobj.seek(0)
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||
self.assertEqual(fileobj.read(), "1\t2\t3\r\n")
|
||
finally:
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||
fileobj.close()
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||
os.unlink(name)
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||
|
||
fd, name = tempfile.mkstemp()
|
||
fileobj = os.fdopen(fd, "w+b")
|
||
try:
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||
writer = csv.writer(fileobj, dialect=testB())
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||
writer.writerow([1,2,3])
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||
fileobj.seek(0)
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||
self.assertEqual(fileobj.read(), "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(), "1|2|3\r\n")
|
||
finally:
|
||
fileobj.close()
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||
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(), "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('abc', [['abc']])
|
||
|
||
def test_simple(self):
|
||
self.readerAssertEqual('1,2,3,4,5', [['1','2','3','4','5']])
|
||
|
||
def test_blankline(self):
|
||
self.readerAssertEqual('', [])
|
||
|
||
def test_empty_fields(self):
|
||
self.readerAssertEqual(',', [['', '']])
|
||
|
||
def test_singlequoted(self):
|
||
self.readerAssertEqual('""', [['']])
|
||
|
||
def test_singlequoted_left_empty(self):
|
||
self.readerAssertEqual('"",', [['','']])
|
||
|
||
def test_singlequoted_right_empty(self):
|
||
self.readerAssertEqual(',""', [['','']])
|
||
|
||
def test_single_quoted_quote(self):
|
||
self.readerAssertEqual('""""', [['"']])
|
||
|
||
def test_quoted_quotes(self):
|
||
self.readerAssertEqual('""""""', [['""']])
|
||
|
||
def test_inline_quote(self):
|
||
self.readerAssertEqual('a""b', [['a""b']])
|
||
|
||
def test_inline_quotes(self):
|
||
self.readerAssertEqual('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('"a"b', [['ab']])
|
||
|
||
def test_lone_quote(self):
|
||
self.readerAssertEqual('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('"a" "b"', [['a "b"']])
|
||
|
||
def test_space_and_quote(self):
|
||
self.readerAssertEqual(' "a"', [[' "a"']])
|
||
|
||
def test_quoted(self):
|
||
self.readerAssertEqual('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):
|
||
self.readerAssertEqual('1,2,3,"""I see,"" said the blind man","as he picked up his hammer and saw"',
|
||
[['1', '2', '3',
|
||
'"I see," said the blind man',
|
||
'as he picked up his hammer and saw']])
|
||
|
||
def test_quoted_nl(self):
|
||
input = '''\
|
||
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('12,12,1",', [['12', '12', '1"', '']])
|
||
|
||
def test_null(self):
|
||
self.writerAssertEqual([], '')
|
||
|
||
def test_single_writer(self):
|
||
self.writerAssertEqual([['abc']], 'abc\r\n')
|
||
|
||
def test_simple_writer(self):
|
||
self.writerAssertEqual([[1, 2, 'abc', 3, 4]], '1,2,abc,3,4\r\n')
|
||
|
||
def test_quotes(self):
|
||
self.writerAssertEqual([[1, 2, 'a"bc"', 3, 4]], '1,2,"a""bc""",3,4\r\n')
|
||
|
||
def test_quote_fieldsep(self):
|
||
self.writerAssertEqual([['abc,def']], '"abc,def"\r\n')
|
||
|
||
def test_newlines(self):
|
||
self.writerAssertEqual([[1, 2, 'a\nbc', 3, 4]], '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']], 'abc\\,def\r\n')
|
||
|
||
def test_read_escape_fieldsep(self):
|
||
self.readerAssertEqual('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']], '"abc,def"\r\n')
|
||
|
||
def test_read_escape_fieldsep(self):
|
||
self.readerAssertEqual('"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 = io.open(fd, 'w+b')
|
||
try:
|
||
writer = csv.DictWriter(fileobj, fieldnames = ["f1", "f2", "f3"])
|
||
writer.writeheader()
|
||
fileobj.seek(0)
|
||
self.assertEqual(fileobj.readline(), "f1,f2,f3\r\n")
|
||
writer.writerow({"f1": 10, "f3": "abc"})
|
||
fileobj.seek(0)
|
||
fileobj.readline() # header
|
||
self.assertEqual(fileobj.read(), "10,,abc\r\n")
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
def test_write_no_fields(self):
|
||
fileobj = StringIO()
|
||
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("1,2,abc\r\n")
|
||
fileobj.seek(0)
|
||
reader = csv.DictReader(fileobj,
|
||
fieldnames=["f1", "f2", "f3"])
|
||
self.assertEqual(reader.next(), {"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("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(reader.next(), {"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("f1,f2,f3\r\n1,2,abc\r\n")
|
||
f.seek(0)
|
||
reader = csv.DictReader(f, fieldnames=csv.reader(f).next())
|
||
self.assertEqual(reader.fieldnames, ["f1", "f2", "f3"])
|
||
self.assertEqual(reader.next(), {"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("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("1,2,abc,4,5,6\r\n")
|
||
fileobj.seek(0)
|
||
reader = csv.DictReader(fileobj,
|
||
fieldnames=["f1", "f2"])
|
||
self.assertEqual(reader.next(), {"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("1,2,abc,4,5,6\r\n")
|
||
fileobj.seek(0)
|
||
reader = csv.DictReader(fileobj,
|
||
fieldnames=["f1", "f2"], restkey="_rest")
|
||
self.assertEqual(reader.next(), {"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("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(reader.next(), {"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("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(reader.next(), {"1": '1', "2": '2', "3": 'abc',
|
||
"4": '4', "5": '5', "6": '6'})
|
||
self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
|
||
"4": 'DEFAULT', "5": 'DEFAULT',
|
||
"6": 'DEFAULT'})
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
def test_read_multi(self):
|
||
sample = [
|
||
'2147483648,43.0e12,17,abc,def\r\n',
|
||
'147483648,43.0e2,17,abc,def\r\n',
|
||
'47483648,43.0,170,abc,def\r\n'
|
||
]
|
||
|
||
reader = csv.DictReader(sample,
|
||
fieldnames="i1 float i2 s1 s2".split())
|
||
self.assertEqual(reader.next(), {"i1": '2147483648',
|
||
"float": '43.0e12',
|
||
"i2": '17',
|
||
"s1": 'abc',
|
||
"s2": 'def'})
|
||
|
||
def test_read_with_blanks(self):
|
||
reader = csv.DictReader(["1,2,abc,4,5,6\r\n","\r\n",
|
||
"1,2,abc,4,5,6\r\n"],
|
||
fieldnames="1 2 3 4 5 6".split())
|
||
self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
|
||
"4": '4', "5": '5', "6": '6'})
|
||
self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
|
||
"4": '4', "5": '5', "6": '6'})
|
||
|
||
def test_read_semi_sep(self):
|
||
reader = csv.DictReader(["1;2;abc;4;5;6\r\n"],
|
||
fieldnames="1 2 3 4 5 6".split(),
|
||
delimiter=';')
|
||
self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
|
||
"4": '4', "5": '5', "6": '6'})
|
||
|
||
class TestArrayWrites(unittest.TestCase):
|
||
def test_int_write(self):
|
||
import array
|
||
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 = ",".join([str(i) for i in a])+"\r\n"
|
||
fileobj.seek(0)
|
||
self.assertEqual(fileobj.read(), expected)
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
def test_double_write(self):
|
||
import array
|
||
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)
|
||
expected = ",".join([repr(i) for i in a])+"\r\n"
|
||
fileobj.seek(0)
|
||
self.assertEqual(fileobj.read(), expected)
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
def test_float_write(self):
|
||
import array
|
||
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)
|
||
expected = ",".join([repr(i) for i in a])+"\r\n"
|
||
fileobj.seek(0)
|
||
self.assertEqual(fileobj.read(), expected)
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
def test_char_write(self):
|
||
import array, string
|
||
a = array.array('c', string.letters)
|
||
fd, name = tempfile.mkstemp()
|
||
fileobj = os.fdopen(fd, "w+b")
|
||
try:
|
||
writer = csv.writer(fileobj, dialect="excel")
|
||
writer.writerow(a)
|
||
expected = ",".join(a)+"\r\n"
|
||
fileobj.seek(0)
|
||
self.assertEqual(fileobj.read(), expected)
|
||
finally:
|
||
fileobj.close()
|
||
os.unlink(name)
|
||
|
||
class TestDialectValidity(unittest.TestCase):
|
||
def test_quoting(self):
|
||
class mydialect(csv.Dialect):
|
||
delimiter = ";"
|
||
escapechar = '\\'
|
||
doublequote = False
|
||
skipinitialspace = True
|
||
lineterminator = '\r\n'
|
||
quoting = csv.QUOTE_NONE
|
||
d = mydialect()
|
||
|
||
mydialect.quoting = None
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
mydialect.doublequote = True
|
||
mydialect.quoting = csv.QUOTE_ALL
|
||
mydialect.quotechar = '"'
|
||
d = mydialect()
|
||
|
||
mydialect.quotechar = "''"
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
mydialect.quotechar = 4
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
def test_delimiter(self):
|
||
class mydialect(csv.Dialect):
|
||
delimiter = ";"
|
||
escapechar = '\\'
|
||
doublequote = False
|
||
skipinitialspace = True
|
||
lineterminator = '\r\n'
|
||
quoting = csv.QUOTE_NONE
|
||
d = mydialect()
|
||
|
||
mydialect.delimiter = ":::"
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
mydialect.delimiter = 4
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
def test_lineterminator(self):
|
||
class mydialect(csv.Dialect):
|
||
delimiter = ";"
|
||
escapechar = '\\'
|
||
doublequote = False
|
||
skipinitialspace = True
|
||
lineterminator = '\r\n'
|
||
quoting = csv.QUOTE_NONE
|
||
d = mydialect()
|
||
|
||
mydialect.lineterminator = ":::"
|
||
d = mydialect()
|
||
|
||
mydialect.lineterminator = 4
|
||
self.assertRaises(csv.Error, mydialect)
|
||
|
||
|
||
class TestSniffer(unittest.TestCase):
|
||
sample1 = """\
|
||
Harry's, Arlington Heights, IL, 2/1/03, Kimi Hayes
|
||
Shark City, Glendale Heights, IL, 12/28/02, Prezence
|
||
Tommy's Place, Blue Island, IL, 12/28/02, Blue Sunday/White Crow
|
||
Stonecutters Seafood and Chop House, Lemont, IL, 12/19/02, Week Back
|
||
"""
|
||
sample2 = """\
|
||
'Harry''s':'Arlington Heights':'IL':'2/1/03':'Kimi Hayes'
|
||
'Shark City':'Glendale Heights':'IL':'12/28/02':'Prezence'
|
||
'Tommy''s Place':'Blue Island':'IL':'12/28/02':'Blue Sunday/White Crow'
|
||
'Stonecutters ''Seafood'' and Chop House':'Lemont':'IL':'12/19/02':'Week Back'
|
||
"""
|
||
header = '''\
|
||
"venue","city","state","date","performers"
|
||
'''
|
||
sample3 = '''\
|
||
05/05/03?05/05/03?05/05/03?05/05/03?05/05/03?05/05/03
|
||
05/05/03?05/05/03?05/05/03?05/05/03?05/05/03?05/05/03
|
||
05/05/03?05/05/03?05/05/03?05/05/03?05/05/03?05/05/03
|
||
'''
|
||
|
||
sample4 = '''\
|
||
2147483648;43.0e12;17;abc;def
|
||
147483648;43.0e2;17;abc;def
|
||
47483648;43.0;170;abc;def
|
||
'''
|
||
|
||
sample5 = "aaa\tbbb\r\nAAA\t\r\nBBB\t\r\n"
|
||
sample6 = "a|b|c\r\nd|e|f\r\n"
|
||
sample7 = "'a'|'b'|'c'\r\n'd'|e|f\r\n"
|
||
|
||
def test_has_header(self):
|
||
sniffer = csv.Sniffer()
|
||
self.assertEqual(sniffer.has_header(self.sample1), False)
|
||
self.assertEqual(sniffer.has_header(self.header+self.sample1), True)
|
||
|
||
def test_sniff(self):
|
||
sniffer = csv.Sniffer()
|
||
dialect = sniffer.sniff(self.sample1)
|
||
self.assertEqual(dialect.delimiter, ",")
|
||
self.assertEqual(dialect.quotechar, '"')
|
||
self.assertEqual(dialect.skipinitialspace, True)
|
||
|
||
dialect = sniffer.sniff(self.sample2)
|
||
self.assertEqual(dialect.delimiter, ":")
|
||
self.assertEqual(dialect.quotechar, "'")
|
||
self.assertEqual(dialect.skipinitialspace, False)
|
||
|
||
def test_delimiters(self):
|
||
sniffer = csv.Sniffer()
|
||
dialect = sniffer.sniff(self.sample3)
|
||
# given that all three lines in sample3 are equal,
|
||
# I think that any character could have been 'guessed' as the
|
||
# delimiter, depending on dictionary order
|
||
self.assertIn(dialect.delimiter, self.sample3)
|
||
dialect = sniffer.sniff(self.sample3, delimiters="?,")
|
||
self.assertEqual(dialect.delimiter, "?")
|
||
dialect = sniffer.sniff(self.sample3, delimiters="/,")
|
||
self.assertEqual(dialect.delimiter, "/")
|
||
dialect = sniffer.sniff(self.sample4)
|
||
self.assertEqual(dialect.delimiter, ";")
|
||
dialect = sniffer.sniff(self.sample5)
|
||
self.assertEqual(dialect.delimiter, "\t")
|
||
dialect = sniffer.sniff(self.sample6)
|
||
self.assertEqual(dialect.delimiter, "|")
|
||
dialect = sniffer.sniff(self.sample7)
|
||
self.assertEqual(dialect.delimiter, "|")
|
||
self.assertEqual(dialect.quotechar, "'")
|
||
|
||
def test_doublequote(self):
|
||
sniffer = csv.Sniffer()
|
||
dialect = sniffer.sniff(self.header)
|
||
self.assertFalse(dialect.doublequote)
|
||
dialect = sniffer.sniff(self.sample2)
|
||
self.assertTrue(dialect.doublequote)
|
||
|
||
if not hasattr(sys, "gettotalrefcount"):
|
||
if test_support.verbose: print "*** skipping leakage tests ***"
|
||
else:
|
||
class NUL:
|
||
def write(s, *args):
|
||
pass
|
||
writelines = write
|
||
|
||
class TestLeaks(unittest.TestCase):
|
||
def test_create_read(self):
|
||
delta = 0
|
||
lastrc = sys.gettotalrefcount()
|
||
for i in xrange(20):
|
||
gc.collect()
|
||
self.assertEqual(gc.garbage, [])
|
||
rc = sys.gettotalrefcount()
|
||
csv.reader(["a,b,c\r\n"])
|
||
csv.reader(["a,b,c\r\n"])
|
||
csv.reader(["a,b,c\r\n"])
|
||
delta = rc-lastrc
|
||
lastrc = rc
|
||
# if csv.reader() leaks, last delta should be 3 or more
|
||
self.assertEqual(delta < 3, True)
|
||
|
||
def test_create_write(self):
|
||
delta = 0
|
||
lastrc = sys.gettotalrefcount()
|
||
s = NUL()
|
||
for i in xrange(20):
|
||
gc.collect()
|
||
self.assertEqual(gc.garbage, [])
|
||
rc = sys.gettotalrefcount()
|
||
csv.writer(s)
|
||
csv.writer(s)
|
||
csv.writer(s)
|
||
delta = rc-lastrc
|
||
lastrc = rc
|
||
# if csv.writer() leaks, last delta should be 3 or more
|
||
self.assertEqual(delta < 3, True)
|
||
|
||
def test_read(self):
|
||
delta = 0
|
||
rows = ["a,b,c\r\n"]*5
|
||
lastrc = sys.gettotalrefcount()
|
||
for i in xrange(20):
|
||
gc.collect()
|
||
self.assertEqual(gc.garbage, [])
|
||
rc = sys.gettotalrefcount()
|
||
rdr = csv.reader(rows)
|
||
for row in rdr:
|
||
pass
|
||
delta = rc-lastrc
|
||
lastrc = rc
|
||
# if reader leaks during read, delta should be 5 or more
|
||
self.assertEqual(delta < 5, True)
|
||
|
||
def test_write(self):
|
||
delta = 0
|
||
rows = [[1,2,3]]*5
|
||
s = NUL()
|
||
lastrc = sys.gettotalrefcount()
|
||
for i in xrange(20):
|
||
gc.collect()
|
||
self.assertEqual(gc.garbage, [])
|
||
rc = sys.gettotalrefcount()
|
||
writer = csv.writer(s)
|
||
for row in rows:
|
||
writer.writerow(row)
|
||
delta = rc-lastrc
|
||
lastrc = rc
|
||
# if writer leaks during write, last delta should be 5 or more
|
||
self.assertEqual(delta < 5, True)
|
||
|
||
# commented out for now - csv module doesn't yet support Unicode
|
||
## class TestUnicode(unittest.TestCase):
|
||
## def test_unicode_read(self):
|
||
## import codecs
|
||
## f = codecs.EncodedFile(StringIO("Martin von L<>wis,"
|
||
## "Marc Andr<64> Lemburg,"
|
||
## "Guido van Rossum,"
|
||
## "Fran<61>ois Pinard\r\n"),
|
||
## data_encoding='iso-8859-1')
|
||
## reader = csv.reader(f)
|
||
## self.assertEqual(list(reader), [[u"Martin von L<>wis",
|
||
## u"Marc Andr<64> Lemburg",
|
||
## u"Guido van Rossum",
|
||
## u"Fran<61>ois Pinardn"]])
|
||
|
||
def test_main():
|
||
mod = sys.modules[__name__]
|
||
test_support.run_unittest(
|
||
*[getattr(mod, name) for name in dir(mod) if name.startswith('Test')]
|
||
)
|
||
|
||
if __name__ == '__main__':
|
||
test_main()
|