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620 lines
22 KiB
Python
620 lines
22 KiB
Python
# 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 unittest
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from StringIO import StringIO
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from csv import csv
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import gc
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from test.test_support import verbose
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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_reader_arg_valid(self):
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self.assertRaises(TypeError, csv.reader)
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self.assertRaises(TypeError, csv.reader, None)
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self.assertRaises(AttributeError, csv.reader, [], bad_attr = 0)
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self.assertRaises(csv.Error, csv.reader, [], 'foo')
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class BadClass:
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def __init__(self):
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raise IOError
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self.assertRaises(IOError, csv.reader, [], BadClass)
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self.assertRaises(TypeError, csv.reader, [], None)
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class BadDialect:
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bad_attr = 0
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self.assertRaises(AttributeError, csv.reader, [], BadDialect)
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def test_writer_arg_valid(self):
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self.assertRaises(TypeError, csv.writer)
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self.assertRaises(TypeError, csv.writer, None)
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self.assertRaises(AttributeError, csv.writer, StringIO(), bad_attr = 0)
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def _test_attrs(self, obj):
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self.assertEqual(obj.dialect.delimiter, ',')
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obj.dialect.delimiter = '\t'
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self.assertEqual(obj.dialect.delimiter, '\t')
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self.assertRaises(TypeError, delattr, obj.dialect, 'delimiter')
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self.assertRaises(TypeError, setattr, obj.dialect,
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'lineterminator', None)
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obj.dialect.escapechar = None
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self.assertEqual(obj.dialect.escapechar, None)
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self.assertRaises(TypeError, delattr, obj.dialect, 'quoting')
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self.assertRaises(TypeError, setattr, obj.dialect, 'quoting', None)
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obj.dialect.quoting = csv.QUOTE_MINIMAL
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self.assertEqual(obj.dialect.quoting, csv.QUOTE_MINIMAL)
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def test_reader_attrs(self):
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self._test_attrs(csv.reader([]))
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def test_writer_attrs(self):
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self._test_attrs(csv.writer(StringIO()))
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def _write_test(self, fields, expect, **kwargs):
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fileobj = StringIO()
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writer = csv.writer(fileobj, **kwargs)
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writer.writerow(fields)
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self.assertEqual(fileobj.getvalue(),
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expect + writer.dialect.lineterminator)
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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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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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# FAILED - needs to be fixed [am]:
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# self._write_test(['a','1','p,"q"'], 'a,1,"p,\\"q\\"',
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# escapechar='\\', doublequote = 0)
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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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fileobj = StringIO()
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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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self.assertEqual(fileobj.getvalue(), "a,b\r\nc,d\r\n")
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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_bigfield(self):
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# This exercises the buffer realloc functionality
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bigstring = 'X' * 50000
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bigline = '%s,%s' % (bigstring, bigstring)
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self._read_test([bigline], [[bigstring, bigstring]])
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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", None)
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class bogus:
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def __init__(self):
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raise KeyError
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self.assertRaises(KeyError, csv.register_dialect, "nonesuch", bogus)
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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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try:
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self.failUnless(isinstance(csv.get_dialect(name), myexceltsv))
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got_dialects = csv.list_dialects()
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got_dialects.sort()
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self.assertEqual(expected_dialects, got_dialects)
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finally:
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csv.unregister_dialect(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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s = StringIO("abc def\nc1ccccc1 benzene\n")
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rdr = csv.reader(s, 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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def test_dialect_apply(self):
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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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fileobj = StringIO()
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writer = csv.writer(fileobj)
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writer.writerow([1,2,3])
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self.assertEqual(fileobj.getvalue(), "1,2,3\r\n")
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fileobj = StringIO()
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writer = csv.writer(fileobj, testA)
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writer.writerow([1,2,3])
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self.assertEqual(fileobj.getvalue(), "1\t2\t3\r\n")
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fileobj = StringIO()
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writer = csv.writer(fileobj, dialect=testB())
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writer.writerow([1,2,3])
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self.assertEqual(fileobj.getvalue(), "1:2:3\r\n")
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fileobj = StringIO()
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writer = csv.writer(fileobj, dialect='testC')
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writer.writerow([1,2,3])
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self.assertEqual(fileobj.getvalue(), "1|2|3\r\n")
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fileobj = StringIO()
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writer = csv.writer(fileobj, dialect=testA, delimiter=';')
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writer.writerow([1,2,3])
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self.assertEqual(fileobj.getvalue(), "1;2;3\r\n")
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finally:
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csv.unregister_dialect('testC')
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def test_bad_dialect(self):
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# Unknown parameter
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self.assertRaises(AttributeError, csv.reader, [], bad_attr = 0)
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# Bad values
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self.assertRaises(TypeError, csv.reader, [], delimiter = None)
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self.assertRaises(TypeError, csv.reader, [], quoting = -1)
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self.assertRaises(TypeError, csv.reader, [], quoting = 100)
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class TestCsvBase(unittest.TestCase):
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def readerAssertEqual(self, input, expected_result):
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reader = csv.reader(StringIO(input), dialect = self.dialect)
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fields = list(reader)
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self.assertEqual(fields, expected_result)
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def writerAssertEqual(self, input, expected_result):
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fileobj = StringIO()
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writer = csv.writer(fileobj, dialect = self.dialect)
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writer.writerows(input)
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self.assertEqual(fileobj.getvalue(), expected_result)
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class TestDialectExcel(TestCsvBase):
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dialect = 'excel'
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def test_single(self):
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self.readerAssertEqual('abc', [['abc']])
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def test_simple(self):
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self.readerAssertEqual('1,2,3,4,5', [['1','2','3','4','5']])
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def test_blankline(self):
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self.readerAssertEqual('', [])
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def test_empty_fields(self):
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self.readerAssertEqual(',', [['', '']])
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def test_singlequoted(self):
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self.readerAssertEqual('""', [['']])
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def test_singlequoted_left_empty(self):
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self.readerAssertEqual('"",', [['','']])
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def test_singlequoted_right_empty(self):
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self.readerAssertEqual(',""', [['','']])
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def test_single_quoted_quote(self):
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self.readerAssertEqual('""""', [['"']])
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def test_quoted_quotes(self):
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self.readerAssertEqual('""""""', [['""']])
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def test_inline_quote(self):
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self.readerAssertEqual('a""b', [['a""b']])
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def test_inline_quotes(self):
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self.readerAssertEqual('a"b"c', [['a"b"c']])
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def test_quotes_and_more(self):
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self.readerAssertEqual('"a"b', [['ab']])
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def test_lone_quote(self):
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self.readerAssertEqual('a"b', [['a"b']])
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def test_quote_and_quote(self):
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self.readerAssertEqual('"a" "b"', [['a "b"']])
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def test_space_and_quote(self):
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self.readerAssertEqual(' "a"', [[' "a"']])
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def test_quoted(self):
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self.readerAssertEqual('1,2,3,"I think, therefore I am",5,6',
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[['1', '2', '3',
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'I think, therefore I am',
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'5', '6']])
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def test_quoted_quote(self):
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self.readerAssertEqual('1,2,3,"""I see,"" said the blind man","as he picked up his hammer and saw"',
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[['1', '2', '3',
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'"I see," said the blind man',
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'as he picked up his hammer and saw']])
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def test_quoted_nl(self):
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input = '''\
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1,2,3,"""I see,""
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said the blind man","as he picked up his
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hammer and saw"
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9,8,7,6'''
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self.readerAssertEqual(input,
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[['1', '2', '3',
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'"I see,"\nsaid the blind man',
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'as he picked up his\nhammer and saw'],
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['9','8','7','6']])
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def test_dubious_quote(self):
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self.readerAssertEqual('12,12,1",', [['12', '12', '1"', '']])
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def test_null(self):
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self.writerAssertEqual([], '')
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def test_single(self):
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self.writerAssertEqual([['abc']], 'abc\r\n')
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def test_simple(self):
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self.writerAssertEqual([[1, 2, 'abc', 3, 4]], '1,2,abc,3,4\r\n')
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def test_quotes(self):
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self.writerAssertEqual([[1, 2, 'a"bc"', 3, 4]], '1,2,"a""bc""",3,4\r\n')
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def test_quote_fieldsep(self):
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self.writerAssertEqual([['abc,def']], '"abc,def"\r\n')
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def test_newlines(self):
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self.writerAssertEqual([[1, 2, 'a\nbc', 3, 4]], '1,2,"a\nbc",3,4\r\n')
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class EscapedExcel(csv.excel):
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quoting = csv.QUOTE_NONE
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escapechar = '\\'
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class TestEscapedExcel(TestCsvBase):
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dialect = EscapedExcel()
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def test_escape_fieldsep(self):
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self.writerAssertEqual([['abc,def']], 'abc\\,def\r\n')
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def test_read_escape_fieldsep(self):
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self.readerAssertEqual('abc\\,def\r\n', [['abc,def']])
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class QuotedEscapedExcel(csv.excel):
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quoting = csv.QUOTE_NONNUMERIC
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escapechar = '\\'
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class TestQuotedEscapedExcel(TestCsvBase):
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dialect = QuotedEscapedExcel()
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def test_write_escape_fieldsep(self):
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self.writerAssertEqual([['abc,def']], '"abc,def"\r\n')
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def test_read_escape_fieldsep(self):
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self.readerAssertEqual('"abc\\,def"\r\n', [['abc,def']])
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# Disabled, pending support in csv.utils module
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class TestDictFields(unittest.TestCase):
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### "long" means the row is longer than the number of fieldnames
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### "short" means there are fewer elements in the row than fieldnames
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def test_write_simple_dict(self):
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fileobj = StringIO()
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writer = csv.DictWriter(fileobj, fieldnames = ["f1", "f2", "f3"])
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writer.writerow({"f1": 10, "f3": "abc"})
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self.assertEqual(fileobj.getvalue(), "10,,abc\r\n")
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def test_write_no_fields(self):
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fileobj = StringIO()
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self.assertRaises(TypeError, csv.DictWriter, fileobj)
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def test_read_dict_fields(self):
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reader = csv.DictReader(StringIO("1,2,abc\r\n"),
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fieldnames=["f1", "f2", "f3"])
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self.assertEqual(reader.next(), {"f1": '1', "f2": '2', "f3": 'abc'})
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def test_read_long(self):
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reader = csv.DictReader(StringIO("1,2,abc,4,5,6\r\n"),
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fieldnames=["f1", "f2"])
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self.assertEqual(reader.next(), {"f1": '1', "f2": '2',
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None: ["abc", "4", "5", "6"]})
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def test_read_long_with_rest(self):
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reader = csv.DictReader(StringIO("1,2,abc,4,5,6\r\n"),
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fieldnames=["f1", "f2"], restkey="_rest")
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self.assertEqual(reader.next(), {"f1": '1', "f2": '2',
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"_rest": ["abc", "4", "5", "6"]})
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def test_read_short(self):
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reader = csv.DictReader(["1,2,abc,4,5,6\r\n","1,2,abc\r\n"],
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fieldnames="1 2 3 4 5 6".split(),
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restval="DEFAULT")
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self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
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"4": '4', "5": '5', "6": '6'})
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self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
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"4": 'DEFAULT', "5": 'DEFAULT',
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"6": 'DEFAULT'})
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def test_read_with_blanks(self):
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reader = csv.DictReader(["1,2,abc,4,5,6\r\n","\r\n",
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"1,2,abc,4,5,6\r\n"],
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fieldnames="1 2 3 4 5 6".split())
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self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
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"4": '4', "5": '5', "6": '6'})
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self.assertEqual(reader.next(), {"1": '1', "2": '2', "3": 'abc',
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"4": '4', "5": '5', "6": '6'})
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class TestArrayWrites(unittest.TestCase):
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def test_int_write(self):
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import array
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contents = [(20-i) for i in range(20)]
|
|
a = array.array('i', contents)
|
|
fileobj = StringIO()
|
|
writer = csv.writer(fileobj, dialect="excel")
|
|
writer.writerow(a)
|
|
expected = ",".join([str(i) for i in a])+"\r\n"
|
|
self.assertEqual(fileobj.getvalue(), expected)
|
|
|
|
def test_double_write(self):
|
|
import array
|
|
contents = [(20-i)*0.1 for i in range(20)]
|
|
a = array.array('d', contents)
|
|
fileobj = StringIO()
|
|
writer = csv.writer(fileobj, dialect="excel")
|
|
writer.writerow(a)
|
|
expected = ",".join([str(i) for i in a])+"\r\n"
|
|
self.assertEqual(fileobj.getvalue(), expected)
|
|
|
|
def test_float_write(self):
|
|
import array
|
|
contents = [(20-i)*0.1 for i in range(20)]
|
|
a = array.array('f', contents)
|
|
fileobj = StringIO()
|
|
writer = csv.writer(fileobj, dialect="excel")
|
|
writer.writerow(a)
|
|
expected = ",".join([str(i) for i in a])+"\r\n"
|
|
self.assertEqual(fileobj.getvalue(), expected)
|
|
|
|
def test_char_write(self):
|
|
import array, string
|
|
a = array.array('c', string.letters)
|
|
fileobj = StringIO()
|
|
writer = csv.writer(fileobj, dialect="excel")
|
|
writer.writerow(a)
|
|
expected = ",".join(a)+"\r\n"
|
|
self.assertEqual(fileobj.getvalue(), expected)
|
|
|
|
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.quoting = csv.QUOTE_NONE
|
|
mydialect.escapechar = 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)
|
|
|
|
|
|
if not hasattr(sys, "gettotalrefcount"):
|
|
if 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)
|
|
|
|
def _testclasses():
|
|
mod = sys.modules[__name__]
|
|
return [getattr(mod, name) for name in dir(mod) if name.startswith('Test')]
|
|
|
|
def suite():
|
|
suite = unittest.TestSuite()
|
|
for testclass in _testclasses():
|
|
suite.addTest(unittest.makeSuite(testclass))
|
|
return suite
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(defaultTest='suite')
|