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Diffstat (limited to 'lib/python2.7/test/test_csv.py')
| -rw-r--r-- | lib/python2.7/test/test_csv.py | 1076 |
1 files changed, 1076 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_csv.py b/lib/python2.7/test/test_csv.py new file mode 100644 index 0000000..53ca5ab --- /dev/null +++ b/lib/python2.7/test/test_csv.py @@ -0,0 +1,1076 @@ +# -*- 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 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() |