# -*- coding: iso-8859-1 -*-
# Copyright (C) 2001,2002 Python Software Foundation
# csv package unit tests
import sys
import os
import unittest
from StringIO import StringIO
import tempfile
import csv
import gc
import io
from test import test_support
class Test_Csv(unittest.TestCase):
"""
Test the underlying C csv parser in ways that are not appropriate
from the high level interface. Further tests of this nature are done
in TestDialectRegistry.
"""
def _test_arg_valid(self, ctor, arg):
self.assertRaises(TypeError, ctor)
self.assertRaises(TypeError, ctor, None)
self.assertRaises(TypeError, ctor, arg, bad_attr = 0)
self.assertRaises(TypeError, ctor, arg, delimiter = 0)
self.assertRaises(TypeError, ctor, arg, delimiter = 'XX')
self.assertRaises(csv.Error, ctor, arg, 'foo')
self.assertRaises(TypeError, ctor, arg, delimiter=None)
self.assertRaises(TypeError, ctor, arg, delimiter=1)
self.assertRaises(TypeError, ctor, arg, quotechar=1)
self.assertRaises(TypeError, ctor, arg, lineterminator=None)
self.assertRaises(TypeError, ctor, arg, lineterminator=1)
self.assertRaises(TypeError, ctor, arg, quoting=None)
self.assertRaises(TypeError, ctor, arg,
quoting=csv.QUOTE_ALL, quotechar='')
self.assertRaises(TypeError, ctor, arg,
quoting=csv.QUOTE_ALL, quotechar=None)
def test_reader_arg_valid(self):
self._test_arg_valid(csv.reader, [])
def test_writer_arg_valid(self):
self._test_arg_valid(csv.writer, StringIO())
def _test_default_attrs(self, ctor, *args):
obj = ctor(*args)
# Check defaults
self.assertEqual(obj.dialect.delimiter, ',')
self.assertEqual(obj.dialect.doublequote, True)
self.assertEqual(obj.dialect.escapechar, None)
self.assertEqual(obj.dialect.lineterminator, "\r\n")
self.assertEqual(obj.dialect.quotechar, '"')
self.assertEqual(obj.dialect.quoting, csv.QUOTE_MINIMAL)
self.assertEqual(obj.dialect.skipinitialspace, False)
self.assertEqual(obj.dialect.strict, False)
# Try deleting or changing attributes (they are read-only)
self.assertRaises(TypeError, delattr, obj.dialect, 'delimiter')
self.assertRaises(TypeError, setattr, obj.dialect, 'delimiter', ':')
self.assertRaises(AttributeError, delattr, obj.dialect, 'quoting')
self.assertRaises(AttributeError, setattr, obj.dialect,
'quoting', None)
def test_reader_attrs(self):
self._test_default_attrs(csv.reader, [])
def test_writer_attrs(self):
self._test_default_attrs(csv.writer, StringIO())
def _test_kw_attrs(self, ctor, *args):
# Now try with alternate options
kwargs = dict(delimiter=':', doublequote=False, escapechar='\\',
lineterminator='\r', quotechar='*',
quoting=csv.QUOTE_NONE, skipinitialspace=True,
strict=True)
obj = ctor(*args, **kwargs)
self.assertEqual(obj.dialect.delimiter, ':')
self.assertEqual(obj.dialect.doublequote, False)
self.assertEqual(obj.dialect.escapechar, '\\')
self.assertEqual(obj.dialect.lineterminator, "\r")
self.assertEqual(obj.dialect.quotechar, '*')
self.assertEqual(obj.dialect.quoting, csv.QUOTE_NONE)
self.assertEqual(obj.dialect.skipinitialspace, True)
self.assertEqual(obj.dialect.strict, True)
def test_reader_kw_attrs(self):
self._test_kw_attrs(csv.reader, [])
def test_writer_kw_attrs(self):
self._test_kw_attrs(csv.writer, StringIO())
def _test_dialect_attrs(self, ctor, *args):
# Now try with dialect-derived options
class dialect:
delimiter='-'
doublequote=False
escapechar='^'
lineterminator='$'
quotechar='#'
quoting=csv.QUOTE_ALL
skipinitialspace=True
strict=False
args = args + (dialect,)
obj = ctor(*args)
self.assertEqual(obj.dialect.delimiter, '-')
self.assertEqual(obj.dialect.doublequote, False)
self.assertEqual(obj.dialect.escapechar, '^')
self.assertEqual(obj.dialect.lineterminator, "$")
self.assertEqual(obj.dialect.quotechar, '#')
self.assertEqual(obj.dialect.quoting, csv.QUOTE_ALL)
self.assertEqual(obj.dialect.skipinitialspace, True)
self.assertEqual(obj.dialect.strict, False)
def test_reader_dialect_attrs(self):
self._test_dialect_attrs(csv.reader, [])
def test_writer_dialect_attrs(self):
self._test_dialect_attrs(csv.writer, StringIO())
def _write_test(self, fields, expect, **kwargs):
fd, name = tempfile.mkstemp()
fileobj = os.fdopen(fd, "w+b")
try:
writer = csv.writer(fileobj, **kwargs)
writer.writerow(fields)
fileobj.seek(0)
self.assertEqual(fileobj.read(),
expect + writer.dialect.lineterminator)
finally:
fileobj.close()
os.unlink(name)
def test_write_arg_valid(self):
self.assertRaises(csv.Error, self._write_test, None, '')
self._write_test((), '')
self._write_test([None], '""')
self.assertRaises(csv.Error, self._write_test,
[None], None, quoting = csv.QUOTE_NONE)
# Check that exceptions are passed up the chain
class BadList:
def __len__(self):
return 10;
def __getitem__(self, i):
if i > 2:
raise IOError
self.assertRaises(IOError, self._write_test, BadList(), '')
class BadItem:
def __str__(self):
raise IOError
self.assertRaises(IOError, self._write_test, [BadItem()], '')
def test_write_bigfield(self):
# This exercises the buffer realloc functionality
bigstring = 'X' * 50000
self._write_test([bigstring,bigstring], '%s,%s' % \
(bigstring, bigstring))
def test_write_quoting(self):
self._write_test(['a',1,'p,q'], 'a,1,"p,q"')
self.assertRaises(csv.Error,
self._write_test,
['a',1,'p,q'], 'a,1,p,q',
quoting = csv.QUOTE_NONE)
self._write_test(['a',1,'p,q'], 'a,1,"p,q"',
quoting = csv.QUOTE_MINIMAL)
self._write_test(['a',1,'p,q'], '"a",1,"p,q"',
quoting = csv.QUOTE_NONNUMERIC)
self._write_test(['a',1,'p,q'], '"a","1","p,q"',
quoting = csv.QUOTE_ALL)
self._write_test(['a\nb',1], '"a\nb","1"',
quoting = csv.QUOTE_ALL)
def test_write_escape(self):
self._write_test(['a',1,'p,q'], 'a,1,"p,q"',
escapechar='\\')
self.assertRaises(csv.Error,
self._write_test,
['a',1,'p,"q"'], 'a,1,"p,\\"q\\""',
escapechar=None, doublequote=False)
self._write_test(['a',1,'p,"q"'], 'a,1,"p,\\"q\\""',
escapechar='\\', doublequote = False)
self._write_test(['"'], '""""',
escapechar='\\', quoting = csv.QUOTE_MINIMAL)
self._write_test(['"'], '\\"',
escapechar='\\', quoting = csv.QUOTE_MINIMAL,
doublequote = False)
self._write_test(['"'], '\\"',
escapechar='\\', quoting = csv.QUOTE_NONE)
self._write_test(['a',1,'p,q'], 'a,1,p\\,q',
escapechar='\\', quoting = csv.QUOTE_NONE)
def test_writerows(self):
class BrokenFile:
def write(self, buf):
raise IOError
writer = csv.writer(BrokenFile())
self.assertRaises(IOError, writer.writerows, [['a']])
fd, name = tempfile.mkstemp()
fileobj = os.fdopen(fd, "w+b")
try:
writer = csv.writer(fileobj)
self.assertRaises(TypeError, writer.writerows, None)
writer.writerows([['a','b'],['c','d']])
fileobj.seek(0)
self.assertEqual(fileobj.read(), "a,b\r\nc,d\r\n")
finally:
fileobj.close()
os.unlink(name)
def test_write_float(self):
# Issue 13573: loss of precision because csv.writer
# uses str() for floats instead of repr()
orig_row = [1.234567890123, 1.0/7.0, 'abc']
f = StringIO()
c = csv.writer(f, quoting=csv.QUOTE_NONNUMERIC)
c.writerow(orig_row)
f.seek(0)
c = csv.reader(f, quoting=csv.QUOTE_NONNUMERIC)
new_row = next(c)
self.assertEqual(orig_row, new_row)
def _read_test(self, input, expect, **kwargs):
reader = csv.reader(input, **kwargs)
result = list(reader)
self.assertEqual(result, expect)
def test_read_oddinputs(self):
self._read_test([], [])
self._read_test([''], [[]])
self.assertRaises(csv.Error, self._read_test,
['"ab"c'], None, strict = 1)
# cannot handle null bytes for the moment
self.assertRaises(csv.Error, self._read_test,
['ab\0c'], None, strict = 1)
self._read_test(['"ab"c'], [['abc']], doublequote = 0)
def test_read_eol(self):
self._read_test(['a,b'], [['a','b']])
self._read_test(['a,b\n'], [['a','b']])
self._read_test(['a,b\r\n'], [['a','b']])
self._read_test(['a,b\r'], [['a','b']])
self.assertRaises(csv.Error, self._read_test, ['a,b\rc,d'], [])
self.assertRaises(csv.Error, self._read_test, ['a,b\nc,d'], [])
self.assertRaises(csv.Error, self._read_test, ['a,b\r\nc,d'], [])
def test_read_eof(self):
self._read_test(['a,"'], [['a', '']])
self._read_test(['"a'], [['a']])
self._read_test(['^'], [['\n']], escapechar='^')
self.assertRaises(csv.Error, self._read_test, ['a,"'], [], strict=True)
self.assertRaises(csv.Error, self._read_test, ['"a'], [], strict=True)
self.assertRaises(csv.Error, self._read_test,
['^'], [], escapechar='^', strict=True)
def test_read_escape(self):
self._read_test(['a,\\b,c'], [['a', 'b', 'c']], escapechar='\\')
self._read_test(['a,b\\,c'], [['a', 'b,c']], escapechar='\\')
self._read_test(['a,"b\\,c"'], [['a', 'b,c']], escapechar='\\')
self._read_test(['a,"b,\\c"'], [['a', 'b,c']], escapechar='\\')
self._read_test(['a,"b,c\\""'], [['a', 'b,c"']], escapechar='\\')
self._read_test(['a,"b,c"\\'], [['a', 'b,c\\']], escapechar='\\')
def test_read_quoting(self):
self._read_test(['1,",3,",5'], [['1', ',3,', '5']])
self._read_test(['1,",3,",5'], [['1', '"', '3', '"', '5']],
quotechar=None, escapechar='\\')
self._read_test(['1,",3,",5'], [['1', '"', '3', '"', '5']],
quoting=csv.QUOTE_NONE, escapechar='\\')
# will this fail where locale uses comma for decimals?
self._read_test([',3,"5",7.3, 9'], [['', 3, '5', 7.3, 9]],
quoting=csv.QUOTE_NONNUMERIC)
self._read_test(['"a\nb", 7'], [['a\nb', ' 7']])
self.assertRaises(ValueError, self._read_test,
['abc,3'], [[]],
quoting=csv.QUOTE_NONNUMERIC)
def test_read_bigfield(self):
# This exercises the buffer realloc functionality and field size
# limits.
limit = csv.field_size_limit()
try:
size = 50000
bigstring = 'X' * size
bigline = '%s,%s' % (bigstring, bigstring)
self._read_test([bigline], [[bigstring, bigstring]])
csv.field_size_limit(size)
self._read_test([bigline], [[bigstring, bigstring]])
self.assertEqual(csv.field_size_limit(), size)
csv.field_size_limit(size-1)
self.assertRaises(csv.Error, self._read_test, [bigline], [])
self.assertRaises(TypeError, csv.field_size_limit, None)
self.assertRaises(TypeError, csv.field_size_limit, 1, None)
finally:
csv.field_size_limit(limit)
def test_read_linenum(self):
for r in (csv.reader(['line,1', 'line,2', 'line,3']),
csv.DictReader(['line,1', 'line,2', 'line,3'],
fieldnames=['a', 'b', 'c'])):
self.assertEqual(r.line_num, 0)
r.next()
self.assertEqual(r.line_num, 1)
r.next()
self.assertEqual(r.line_num, 2)
r.next()
self.assertEqual(r.line_num, 3)
self.assertRaises(StopIteration, r.next)
self.assertEqual(r.line_num, 3)
def test_roundtrip_quoteed_newlines(self):
fd, name = tempfile.mkstemp()
fileobj = os.fdopen(fd, "w+b")
try:
writer = csv.writer(fileobj)
self.assertRaises(TypeError, writer.writerows, None)
rows = [['a\nb','b'],['c','x\r\nd']]
writer.writerows(rows)
fileobj.seek(0)
for i, row in enumerate(csv.reader(fileobj)):
self.assertEqual(row, rows[i])
finally:
fileobj.close()
os.unlink(name)
class TestDialectRegistry(unittest.TestCase):
def test_registry_badargs(self):
self.assertRaises(TypeError, csv.list_dialects, None)
self.assertRaises(TypeError, csv.get_dialect)
self.assertRaises(csv.Error, csv.get_dialect, None)
self.assertRaises(csv.Error, csv.get_dialect, "nonesuch")
self.assertRaises(TypeError, csv.unregister_dialect)
self.assertRaises(csv.Error, csv.unregister_dialect, None)
self.assertRaises(csv.Error, csv.unregister_dialect, "nonesuch")
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)
self.addCleanup(csv.unregister_dialect, name)
self.assertEqual(csv.get_dialect(name).delimiter, '\t')
got_dialects = sorted(csv.list_dialects())
self.assertEqual(expected_dialects, got_dialects)
def test_register_kwargs(self):
name = 'fedcba'
csv.register_dialect(name, delimiter=';')
self.addCleanup(csv.unregister_dialect, name)
self.assertEqual(csv.get_dialect(name).delimiter, ';')
self.assertEqual([['X', 'Y', 'Z']], list(csv.reader(['X;Y;Z'], 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("abc def\nc1ccccc1 benzene\n")
fileobj.seek(0)
rdr = csv.reader(fileobj, dialect=space())
self.assertEqual(rdr.next(), ["abc", "def"])
self.assertEqual(rdr.next(), ["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(), "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(), "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(), "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()
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�,"
## "Marc Andr�emburg,"
## "Guido van Rossum,"
## "Fran�s Pinard\r\n"),
## data_encoding='iso-8859-1')
## reader = csv.reader(f)
## self.assertEqual(list(reader), [[u"Martin von L�",
## u"Marc Andr�emburg",
## u"Guido van Rossum",
## u"Fran�s 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()
|
