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# -*- coding: utf-8 -*-
"""
Unit tests for the CSV parser.
Author: Gertjan van den Burg
"""
import io
import unittest
from clevercsv.cparser_util import parse_data
class ParserTestCase(unittest.TestCase):
"""
Testing splitting on delimiter with or without quotes
"""
def _parse_test(self, string, expect, **kwargs):
buf = io.StringIO(string, newline="")
result = list(parse_data(buf, **kwargs))
self.assertEqual(result, expect)
def test_parse_simple_1(self):
self._parse_test(
"A,B,C,D,E",
[["A", "B", "C", "D", "E"]],
delimiter=",",
quotechar='"',
)
def test_parse_simple_2(self):
self._parse_test(
"A,B,C,D,E",
[["A", "B", "C", "D", "E"]],
delimiter=",",
quotechar="",
)
def test_parse_simple_3(self):
self._parse_test("A,B,C,D,E", [["A,B,C,D,E"]])
def test_parse_simple_4(self):
self._parse_test(
'A,"B",C,D,E',
[["A", "B", "C", "D", "E"]],
delimiter=",",
quotechar='"',
)
def test_parse_simple_5(self):
self._parse_test(
'A,"B,C",D,E',
[["A", "B,C", "D", "E"]],
delimiter=",",
quotechar='"',
)
def test_parse_simple_6(self):
self._parse_test(
'A,"B,C",D,E',
[["A", '"B', 'C"', "D", "E"]],
delimiter=",",
quotechar="",
)
def test_parse_simple_7(self):
self._parse_test(
'"A","B","C",,,,',
[['"A"', '"B"', '"C"', "", "", "", ""]],
delimiter=",",
quotechar="",
)
"""
Testing splitting on rows only:
"""
def test_parse_no_delim_1(self):
self._parse_test(
'A"B"C\rA"B""C""D"', [['A"B"C'], ['A"B""C""D"']], quotechar=""
)
def test_parse_no_delim_2(self):
self._parse_test(
'A"B"C\nA"B""C""D"', [['A"B"C'], ['A"B""C""D"']], quotechar=""
)
def test_parse_no_delim_3(self):
self._parse_test(
'A"B"C\r\nA"B""C""D"', [['A"B"C'], ['A"B""C""D"']], quotechar=""
)
def test_parse_no_delim_4(self):
self._parse_test(
'A"B\r\nB"C\r\nD"E"F\r\nG',
[['A"B\r\nB"C'], ['D"E"F'], ["G"]],
quotechar='"',
)
def test_parse_no_delim_5(self):
self._parse_test(
'A"B\nB"C\nD"E"F\nG',
[['A"B\nB"C'], ['D"E"F'], ["G"]],
quotechar='"',
)
def test_parse_no_delim_6(self):
self._parse_test(
'A"B\nB\rB"C\nD"E"F\nG',
[['A"B\nB\rB"C'], ['D"E"F'], ["G"]],
quotechar='"',
)
"""
Tests from Pythons builtin CSV module:
"""
def test_parse_builtin_1(self):
self._parse_test("", [])
def test_parse_builtin_2(self):
self._parse_test("a,b\r", [["a", "b"]], delimiter=",")
def test_parse_builtin_3(self):
self._parse_test("a,b\n", [["a", "b"]], delimiter=",")
def test_parse_builtin_4(self):
self._parse_test("a,b\r\n", [["a", "b"]], delimiter=",")
def test_parse_builtin_5(self):
self._parse_test('a,"', [["a", ""]], delimiter=",", quotechar='"')
def test_parse_builtin_6(self):
self._parse_test('"a', [["a"]], delimiter=",", quotechar='"')
def test_parse_builtin_7(self):
# differs from Python (1)
self._parse_test(
"a,|b,c",
[["a", "|b", "c"]],
delimiter=",",
quotechar='"',
escapechar="|",
)
def test_parse_builtin_8(self):
self._parse_test(
"a,b|,c",
[["a", "b,c"]],
delimiter=",",
quotechar='"',
escapechar="|",
)
def test_parse_builtin_9(self):
# differs from Python (1)
self._parse_test(
'a,"b,|c"',
[["a", "b,|c"]],
delimiter=",",
quotechar='"',
escapechar="|",
)
def test_parse_builtin_10(self):
self._parse_test(
'a,"b,c|""',
[["a", 'b,c"']],
delimiter=",",
quotechar='"',
escapechar="|",
)
def test_parse_builtin_11(self):
# differs from Python (2)
self._parse_test(
'a,"b,c"|',
[["a", "b,c"]],
delimiter=",",
quotechar='"',
escapechar="|",
)
def test_parse_builtin_12(self):
self._parse_test(
'1,",3,",5', [["1", ",3,", "5"]], delimiter=",", quotechar='"'
)
def test_parse_builtin_13(self):
self._parse_test(
'1,",3,",5',
[["1", '"', "3", '"', "5"]],
delimiter=",",
quotechar="",
)
def test_parse_builtin_14(self):
self._parse_test(
',3,"5",7.3, 9',
[["", "3", "5", "7.3", " 9"]],
delimiter=",",
quotechar='"',
)
def test_parse_builtin_15(self):
self._parse_test(
'"a\nb", 7', [["a\nb", " 7"]], delimiter=",", quotechar='"'
)
"""
Double quotes:
"""
def test_parse_dq_1(self):
self._parse_test(
'a,"a""b""c"', [["a", 'a"b"c']], delimiter=",", quotechar='"'
)
def test_parse_dq_2(self):
self._parse_test(
'a,"a""b,c""d",e',
[["a", 'a"b,c"d', "e"]],
delimiter=",",
quotechar='"',
)
"""
Mix double and escapechar:
"""
def test_parse_mix_double_escape_1(self):
self._parse_test(
'a,"bc""d"",|"f|""',
[["a", 'bc"d","f"']],
delimiter=",",
quotechar='"',
escapechar="|",
)
"""
Other tests:
"""
def test_parse_other_1(self):
self._parse_test(
'a,b "c" d,e', [["a", 'b "c" d', "e"]], delimiter=",", quotechar=""
)
def test_parse_other_2(self):
self._parse_test(
'a,b "c" d,e',
[["a", 'b "c" d', "e"]],
delimiter=",",
quotechar='"',
)
def test_parse_other_3(self):
self._parse_test("a,\rb,c", [["a", ""], ["b", "c"]], delimiter=",")
def test_parse_other_4(self):
self._parse_test(
"a,b\r\n\r\nc,d\r\n", [["a", "b"], [], ["c", "d"]], delimiter=","
)
def test_parse_other_5(self):
self._parse_test(
"\r\na,b\rc,d\n\re,f\r\n",
[[], ["a", "b"], ["c", "d"], [], ["e", "f"]],
delimiter=",",
)
def test_parse_other_6(self):
self._parse_test(
"a,b\n\nc,d", [["a", "b"], [], ["c", "d"]], delimiter=","
)
"""
Further escape char tests:
"""
def test_parse_escape_1(self):
self._parse_test(
"a,b,c||d",
[["a", "b", "c|d"]],
delimiter=",",
quotechar="",
escapechar="|",
)
def test_parse_escape_2(self):
self._parse_test(
"a,b,c||d,e|,d",
[["a", "b", "c|d", "e,d"]],
delimiter=",",
quotechar="",
escapechar="|",
)
"""
Quote mismatch until EOF:
"""
def test_parse_quote_mismatch_1(self):
self._parse_test(
'a,b,c"d,e\n',
[["a", "b", 'c"d,e\n']],
delimiter=",",
quotechar='"',
)
def test_parse_quote_mismatch_2(self):
self._parse_test(
'a,b,c"d,e\n',
[["a", "b", 'c"d', "e"]],
delimiter=",",
quotechar="",
)
def test_parse_quote_mismatch_3(self):
self._parse_test(
'a,b,"c,d', [["a", "b", "c,d"]], delimiter=",", quotechar='"'
)
def test_parse_quote_mismatch_4(self):
self._parse_test(
'a,b,"c,d\n', [["a", "b", "c,d\n"]], delimiter=",", quotechar='"'
)
"""
Single column:
"""
def test_parse_single_1(self):
self._parse_test("a\rb\rc\n", [["a"], ["b"], ["c"]])
"""
These tests illustrate a difference with the Python parser, which in this
case would return ``[['a', 'abc', 'd']]``.
"""
def test_parse_differ_1(self):
self._parse_test(
'a,"ab"c,d', [["a", '"ab"c', "d"]], delimiter=",", quotechar=""
)
def test_parse_differ_2(self):
self._parse_test(
'a,"ab"c,d', [["a", '"ab"c', "d"]], delimiter=",", quotechar='"'
)
"""
Return quoted
"""
def test_parse_return_quoted_1(self):
self._parse_test(
"a,b,c",
[[("a", False), ("b", False), ("c", False)]],
delimiter=",",
quotechar="",
return_quoted=True,
)
def test_parse_return_quoted_2(self):
self._parse_test(
'a,"b,c",d',
[[("a", False), ("b,c", True), ("d", False)]],
delimiter=",",
quotechar='"',
return_quoted=True,
)
def test_parse_return_quoted_3(self):
self._parse_test(
'a,b,"c,d',
[[("a", False), ("b", False), ("c,d", True)]],
delimiter=",",
quotechar='"',
return_quoted=True,
)
if __name__ == "__main__":
unittest.main()
|
