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bpo-32940: IDLE: Simplify StringTranslatePseudoMapping in pyparse (GH-5862)

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The new code also runs faster.
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Cheryl Sabella 2018-02-28 17:23:58 -05:00 • committed by Terry Jan Reedy
parent 45ab51c142
commit f0daa880a4
3 changed files with 30 additions and 87 deletions
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52
Lib/idlelib/idle_test/test_pyparse.py
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@ -8,44 +8,20 @@ import unittest
from idlelib import pyparse
class StringTranslatePseudoMappingTest(unittest.TestCase):
class ParseMapTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
whitespace_chars = ' \t\n\r'
cls.preserve_dict = {ord(c): ord(c) for c in whitespace_chars}
cls.default = ord('x')
cls.mapping = pyparse.StringTranslatePseudoMapping(
cls.preserve_dict, default_value=ord('x'))
def test_parsemap(self):
keepwhite = {ord(c): ord(c) for c in ' \t\n\r'}
mapping = pyparse.ParseMap(keepwhite)
self.assertEqual(mapping[ord('\t')], ord('\t'))
self.assertEqual(mapping[ord('a')], ord('x'))
self.assertEqual(mapping[1000], ord('x'))
@classmethod
def tearDownClass(cls):
del cls.preserve_dict, cls.default, cls.mapping
def test__init__(self):
m = self.mapping
self.assertEqual(m._non_defaults, self.preserve_dict)
self.assertEqual(m._default_value, self.default)
def test__get_item__(self):
self.assertEqual(self.mapping[ord('\t')], ord('\t'))
self.assertEqual(self.mapping[ord('a')], self.default)
def test__len__(self):
self.assertEqual(len(self.mapping), len(self.preserve_dict))
def test__iter__(self):
count = 0
for key, value in self.mapping.items():
self.assertIn(key, self.preserve_dict)
count += 1
self.assertEqual(count, len(self.mapping))
def test_get(self):
self.assertEqual(self.mapping.get(ord('\t')), ord('\t'))
self.assertEqual(self.mapping.get('a'), self.default)
# Default is a parameter, but it isn't used.
self.assertEqual(self.mapping.get('a', default=500), self.default)
def test_trans(self):
# trans is the production instance of ParseMap, used in _study1
parser = pyparse.Parser(4, 4)
self.assertEqual('\t a([{b}])b"c\'d\n'.translate(pyparse.trans),
'xxx(((x)))x"x\'x\n')
class PyParseTest(unittest.TestCase):
@ -152,10 +128,6 @@ class PyParseTest(unittest.TestCase):
p.set_lo(44)
self.assertEqual(p.code, code[44:])
def test_tran(self):
self.assertEqual('\t a([{b}])b"c\'d\n'.translate(self.parser._tran),
'xxx(((x)))x"x\'x\n')
def test_study1(self):
eq = self.assertEqual
p = self.parser