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tests.py
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# -*- coding: utf-8 -*-
# TODO: Tests pass on Python 3.6, Disabled to not break tests on 2.7 :-(
# from __future__ import absolute_import, division, print_function, unicode_literals
from collections import OrderedDict
from uuid import uuid4
import random
import datetime
import fractions
import unittest
import pytz
from edn_format import edn_lex, edn_parse, \
loads, dumps, Keyword, Symbol, TaggedElement, ImmutableDict, ImmutableList, add_tag, \
EDNDecodeError
class ConsoleTest(unittest.TestCase):
def test_dumping(self):
is_exception = False
try:
loads("[1 true nil]")
except AttributeError:
is_exception = True
self.assertFalse(is_exception)
class EdnTest(unittest.TestCase):
def check_lex(self, expected_output, actual_input):
self.assertEqual(expected_output, str(list(edn_lex.lex(actual_input))))
def test_lexer(self):
self.check_lex("[LexToken(SYMBOL,None,1,0)]",
"nil")
self.check_lex("[LexToken(SYMBOL,True,1,0)]",
"true")
self.check_lex("[LexToken(INTEGER,123,1,0)]",
"123")
self.check_lex(
"[LexToken(INTEGER,456,1,0), " +
"LexToken(SYMBOL,None,1,4), " +
"LexToken(SYMBOL,False,1,8)]",
"456 nil false")
self.check_lex("[LexToken(CHAR,'c',1,0)]",
r"\c")
self.check_lex("[LexToken(KEYWORD,Keyword(abc),1,0)]",
r":abc")
self.check_lex("[LexToken(KEYWORD,Keyword(+),1,0)]",
r":+")
self.check_lex("[]",
"; a comment")
self.check_lex("[LexToken(KEYWORD,Keyword(abc),1,0)]",
":abc ; a comment")
self.check_lex("[LexToken(TAG,'inst',1,0), " +
"LexToken(STRING,'1985-04-12T23:20:50.52Z',1,6)]",
'#inst "1985-04-12T23:20:50.52Z"')
self.check_lex("[LexToken(SYMBOL,Symbol(abc),1,0)]",
"abc")
self.check_lex("[LexToken(SYMBOL,Symbol(?abc),1,0)]",
"?abc")
self.check_lex("[LexToken(SYMBOL,Symbol(/),1,0)]",
"/")
self.check_lex("[LexToken(SYMBOL,Symbol(prefix/name),1,0)]",
"prefix/name")
self.check_lex("[LexToken(SYMBOL,Symbol(true.),1,0)]",
"true.")
self.check_lex("[LexToken(SYMBOL,Symbol(nil.),1,0)]",
"nil.")
self.check_lex("[LexToken(SYMBOL,Symbol($:ABC?),1,0)]",
"$:ABC?")
self.check_lex("[LexToken(MAP_START,'{',1,0), "
"LexToken(KEYWORD,Keyword(a),1,2), "
"LexToken(SYMBOL,False,1,5), "
"LexToken(KEYWORD,Keyword(b),1,12), "
"LexToken(SYMBOL,False,1,15), "
"LexToken(MAP_OR_SET_END,'}',1,21)]",
"{ :a false, :b false }")
self.check_lex("[LexToken(RATIO,Fraction(2, 3),1,0)]",
"2/3")
def check_parse(self, expected_output, actual_input):
self.assertEqual(expected_output, edn_parse.parse(actual_input))
def check_dumps(self, expected_output, actual_input, **kw):
self.assertEqual(expected_output, dumps(actual_input, **kw))
def test_parser(self):
self.check_parse(1,
"1")
self.check_parse(Symbol("a*b"),
'a*b')
self.check_parse("ab",
'"ab"')
self.check_parse('a"b',
r'"a\"b"')
self.check_parse("blah\n",
'"blah\n"')
self.check_parse([1, 2, 3],
"[1 2 3]")
self.check_parse({1, 2, 3},
"#{1 2 3}")
self.check_parse([1, True, None],
"[1 true nil]")
self.check_parse("c",
r"\c")
self.check_parse("\n",
r"\newline")
self.check_parse(u"Σ",
u"\\Σ")
self.check_parse(u"λ",
r"\u03bB")
self.check_parse(Keyword("abc"),
":abc")
self.check_parse([Keyword("abc"), 1, True, None],
"[:abc 1 true nil]")
self.check_parse((Keyword("abc"), 1, True, None),
"(:abc 1 true nil)")
self.check_parse(tuple(), "()")
self.check_parse(set(), "#{}")
self.check_parse({}, "{}")
self.check_parse([], "[]")
self.check_parse({"a": [1, 2, 3]},
'{"a" [1 2 3]}')
self.check_parse(datetime.datetime(2012, 12, 22, 19, 40, 18, 0,
tzinfo=pytz.utc),
'#inst "2012-12-22T19:40:18Z"')
self.check_parse(datetime.date(2011, 10, 9),
'#inst "2011-10-09"')
self.check_parse("|", "\"|\"")
self.check_parse("%", "\"%\"")
self.check_parse(['bl"ah'], r"""["bl\"ah"]""")
self.check_parse("blah\n", '"blah\n"')
self.check_parse('"', r'"\""')
self.check_parse('\\', r'"\\"')
self.check_parse(["abc", "123"], '["abc", "123"]')
self.check_parse({"key": "value"}, '{"key" "value"}')
self.check_parse(frozenset({ImmutableList([u"ab", u"cd"]),
ImmutableList([u"ef"])}),
'#{["ab", "cd"], ["ef"]}')
self.check_parse(fractions.Fraction(2, 3), "2/3")
self.check_parse((2, Symbol('/'), 3), "(2 / 3)")
def check_roundtrip(self, data_input, **kw):
self.assertEqual(data_input, loads(dumps(data_input, **kw)))
def check_eof(self, data_input, **kw):
with self.assertRaises(EDNDecodeError) as ctx:
loads(data_input, **kw)
self.assertEqual('EOF Reached', str(ctx.exception))
def test_dump(self):
self.check_roundtrip({1, 2, 3})
self.check_roundtrip({1, 2, 3}, sort_sets=True)
self.check_roundtrip(
{Keyword("a"): 1,
"foo": Keyword("gone"),
Keyword("bar"): [1, 2, 3]})
self.check_roundtrip(uuid4())
self.check_roundtrip(datetime.date(1354, 6, 7))
self.check_roundtrip(datetime.datetime(1900, 6, 7, 23, 59, 59,
tzinfo=pytz.utc))
def test_proper_unicode_escape(self):
self.check_roundtrip(u"\"")
self.check_roundtrip(u'"')
self.check_roundtrip(u"\\\"")
self.check_roundtrip(u'\\"')
self.check_roundtrip(u'\b\f\n\r\t"\\')
def test_round_trip_conversion(self):
EDN_LITERALS = [
[r"\c", '"c"'],
["[ :ghi ]", "[:ghi]"],
["[:a #_foo 42]", "[:a 42]"],
["123N", "123"],
["-123N", "-123"],
["+123", "123"],
["+123N", "123"],
["123.2", "123.2"],
["+32.23M", "32.23M"],
["3.23e10", "32300000000.0"],
["3e10", "30000000000.0"],
]
for literal in EDN_LITERALS:
step1 = literal[0]
step2 = loads(step1)
step3 = dumps(step2)
if isinstance(literal[1], list):
self.assertIn(step3, literal[1])
else:
self.assertEqual(literal[1], step3)
def test_round_trip_sets(self):
step1 = '#{:a (1 2 3) :b}'
step2 = loads(step1)
step3 = dumps(step2)
step4 = loads(step3)
self.assertIn(Keyword("a"), step4)
self.assertIn(Keyword("b"), step4)
self.assertIn((1, 2, 3), step4)
def test_round_trip_inst_short(self):
step1 = '#inst "2011"'
step2 = loads(step1)
step3 = dumps(step2)
step4 = loads(step3)
self.assertEqual('#inst "2011-01-01"', step3)
self.assertEqual(datetime.date(2011, 1, 1), step4)
def test_round_trip_same(self):
EDN_LITERALS = (
"nil",
"true",
"false",
'"hello world"',
":keyword",
":+",
":!",
":-",
":_",
":$",
":&",
":=",
":.",
":abc/def",
"symbol",
"123",
"-123",
"32.23",
"32.23M",
"-32.23M",
"-3.903495E-73M",
"3.23e-10",
"3e+20",
"3E+20M",
'["abc"]',
'[1]',
'[1 "abc"]',
'[1 "abc" true]',
'[:ghi]',
'(:ghi)',
'[1 "abc" true :ghi]',
'(1 "abc" true :ghi)',
'{"a" 2}',
'#inst "1985-04-12T23:20:50.000000Z"',
'#inst "2011-10-09"',
'#uuid "f81d4fae-7dec-11d0-a765-00a0c91e6bf6"',
'#date "19/07/1984"',
'#{{"a" 1}}',
'#{{"a" #{{:b 2}}}}',
'"|"',
"/",
"1/3",
'"1/3"',
)
class TagDate(TaggedElement):
def __init__(self, value):
super(TagDate, self).__init__()
self.name = 'date'
self.value = datetime.datetime.strptime(
value,
"%d/%m/%Y").date()
def __str__(self):
return '#{} "{}"'.format(
self.name,
self.value.strftime("%d/%m/%Y"))
add_tag('date', TagDate)
for literal in EDN_LITERALS:
step1 = literal
step2 = loads(step1)
step3 = dumps(step2)
self.assertEqual(step1, step3)
def test_chars(self):
# 33-126 = printable ASCII range, except space (code 32)
for i in range(33, 127):
ch = chr(i)
edn_data = "\\{}".format(ch)
self.assertEqual(ch, loads(edn_data), edn_data)
def test_exceptions(self):
with self.assertRaises(EDNDecodeError):
loads("{")
def test_fractions(self):
for edn_data in (
'0/1',
'1/1',
'1/2',
'1/3',
'-5/3',
'99999999999999999999999999999999999/999999999999999999999999991',
):
self.assertEqual(edn_data, dumps(loads(edn_data)), edn_data)
def test_keyword_keys(self):
unchanged = (
None,
True,
1,
"foo",
{},
{True: 42},
{25: 42},
{3.14: "test"},
{Keyword("foo"): "something"},
{Symbol("foo"): "something"},
["foo", "bar"],
("foo", "bar"),
{1: {2: 3}},
ImmutableDict({1: 2}),
)
for case in unchanged:
self.check_roundtrip(case, keyword_keys=True)
keyworded_keys = (
("{:foo 42}", {"foo": 42}),
("{:a {:b {:c 42} :d 1}}", {"a": {"b": {"c": 42}, "d": 1}}),
("[{:a 42} {:b 25}]", [{"a": 42}, {"b": 25}]),
("({:a 42} {:b 25})", ({"a": 42}, {"b": 25})),
("{1 [{:a 42}]}", {1: [{"a": 42}]}),
("{:foo 1}", ImmutableDict({"foo": 1})),
)
for expected, data in keyworded_keys:
self.assertEqual(expected, dumps(data, keyword_keys=True))
self.assertEqual(
{Keyword("a"): {Keyword("b"): 2}, 3: 4},
loads(dumps({Keyword("a"): {"b": 2}, 3: 4}, keyword_keys=True)))
def test_sort_keys(self):
cases = (
('{"a" 4 "b" 5 "c" 3}', OrderedDict([("c", 3), ("b", 5), ("a", 4)])),
('{1 0 2 0 "a" 0}', {"a": 0, 1: 0, 2: 0}),
('[{"a" 1 "b" 1}]', [OrderedDict([("b", 1), ("a", 1)])]),
)
for expected, data in cases:
self.check_dumps(expected, data, sort_keys=True)
self.check_dumps('{:a 1 :b 1 :c 1 :d 1}',
{"a": 1, "d": 1, "b": 1, "c": 1},
sort_keys=True, keyword_keys=True)
def test_sort_sets(self):
def misordered_set_sequence():
""""
Return a tuple that, if put in a set then iterated over, doesn't
yield elements in the original order
"""
while True:
seq = tuple(random.sample(range(10000), random.randint(2, 8)))
s = set(seq)
if tuple(s) != seq:
return seq
for _ in range(10):
seq = misordered_set_sequence()
self.check_roundtrip(set(seq))
self.check_dumps("#{{{}}}".format(" ".join(str(i) for i in sorted(seq))),
set(seq),
sort_sets=True)
def test_discard(self):
for expected, edn_data in (
('[x]', '[x #_ z]'),
('[z]', '[#_ x z]'),
('[x z]', '[x #_ y z]'),
('{1 4}', '{1 #_ 2 #_ 3 4}'),
('[1 2]', '[1 #_ [ #_ [ #_ [ #_ [ #_ 42 ] ] ] ] 2 ]'),
('[1 2 11]', '[1 2 #_ #_ #_ #_ 4 5 6 #_ 7 #_ #_ 8 9 10 11]'),
('()', '(#_(((((((1))))))))'),
('[6]', '[#_ #_ #_ #_ #_ 1 2 3 4 5 6]'),
('[4]', '[#_ #_ 1 #_ 2 3 4]'),
('{:a 1}', '{:a #_:b 1}'),
('[42]', '[42 #_ {:a [1 2 3 4] true false 1 #inst "2017"}]'),
('#{1}', '#{1 #_foo}'),
('"#_ foo"', '"#_ foo"'),
('["#" _]', r'[\#_]'),
('[_]', r'[#_\#_]'),
('[1]', '[1 #_\n\n42]'),
('{}', '{#_ 1}'),
):
self.assertEqual(expected, dumps(loads(edn_data)), edn_data)
def test_discard_syntax_errors(self):
for edn_data in ('#_', '#_ #_ 1', '#inst #_ 2017', '[#_]'):
with self.assertRaises(EDNDecodeError):
loads(edn_data)
def test_discard_all(self):
for edn_data in (
'42', '-1', 'nil', 'true', 'false', '"foo"', '\\space', '\\a',
':foo', ':foo/bar', '[]', '{}', '#{}', '()', '(a)', '(a b)',
'[a [[[b] c]] 2]', '#inst "2017"',
):
self.assertEqual([1], loads('[1 #_ {}]'.format(edn_data)), edn_data)
self.assertEqual([1], loads('[#_ {} 1]'.format(edn_data)), edn_data)
self.check_eof('#_ {}'.format(edn_data))
for coll in ('[%s]', '(%s)', '{%s}', '#{%s}'):
expected = coll % ""
edn_data = coll % '#_ {}'.format(edn_data)
self.assertEqual(expected, dumps(loads(edn_data)), edn_data)
def test_chained_discards(self):
for expected, edn_data in (
('[]', '[#_ 1 #_ 2 #_ 3]'),
('[]', '[#_ #_ 1 2 #_ 3]'),
('[]', '[#_ #_ #_ 1 2 3]'),
):
self.assertEqual(expected, dumps(loads(edn_data)), edn_data)
class EdnInstanceTest(unittest.TestCase):
def test_hashing(self):
pop_count = len(set(map(hash,
["db/id",
Keyword("db/id"),
Symbol("db/id")])))
self.assertEqual(pop_count, 3)
def test_equality(self):
self.assertTrue("db/id" != Keyword("db/id"))
self.assertTrue("db/id" != Symbol("db/id"))
self.assertTrue(Symbol("db/id") != Keyword("db/id"))
self.assertTrue("db/id" == "db/id")
self.assertTrue(Keyword("db/id") == Keyword("db/id"))
self.assertTrue(Symbol("db/id") == Symbol("db/id"))
class ImmutableListTest(unittest.TestCase):
def test_list(self):
x = ImmutableList([1, 2, 3])
self.assertTrue(x == [1, 2, 3])
self.assertTrue(x.index(1) == 0)
self.assertTrue(x.count(3) == 1)
self.assertTrue(x.insert(0, 0) == [0, 1, 2, 3])
y = ImmutableList([3, 1, 4])
self.assertTrue(y.sort() == [1, 3, 4])
if __name__ == "__main__":
unittest.main()