# -*- 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 _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_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([str(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([str(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 Löwis," | |
## "Marc André Lemburg," | |
## "Guido van Rossum," | |
## "François Pinard\r\n"), | |
## data_encoding='iso-8859-1') | |
## reader = csv.reader(f) | |
## self.assertEqual(list(reader), [[u"Martin von Löwis", | |
## u"Marc André Lemburg", | |
## u"Guido van Rossum", | |
## u"François 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() |