/usr/lib/python2.7/test/test_linecache.py is in libpython2.7-testsuite 2.7.15~rc1-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | """ Tests for the linecache module """
import linecache
import unittest
import os.path
from test import support
FILENAME = linecache.__file__
INVALID_NAME = '!@$)(!@#_1'
EMPTY = ''
TESTS = 'inspect_fodder inspect_fodder2 mapping_tests'
TESTS = TESTS.split()
TEST_PATH = support.TEST_HOME_DIR
MODULES = "linecache abc".split()
MODULE_PATH = os.path.dirname(FILENAME)
SOURCE_1 = '''
" Docstring "
def function():
return result
'''
SOURCE_2 = '''
def f():
return 1 + 1
a = f()
'''
SOURCE_3 = '''
def f():
return 3''' # No ending newline
class LineCacheTests(unittest.TestCase):
def test_getline(self):
getline = linecache.getline
# Bad values for line number should return an empty string
self.assertEqual(getline(FILENAME, 2**15), EMPTY)
self.assertEqual(getline(FILENAME, -1), EMPTY)
# Float values currently raise TypeError, should it?
self.assertRaises(TypeError, getline, FILENAME, 1.1)
# Bad filenames should return an empty string
self.assertEqual(getline(EMPTY, 1), EMPTY)
self.assertEqual(getline(INVALID_NAME, 1), EMPTY)
# Check whether lines correspond to those from file iteration
for entry in TESTS:
filename = os.path.join(TEST_PATH, entry) + '.py'
for index, line in enumerate(open(filename)):
self.assertEqual(line, getline(filename, index + 1))
# Check module loading
for entry in MODULES:
filename = os.path.join(MODULE_PATH, entry) + '.py'
for index, line in enumerate(open(filename)):
self.assertEqual(line, getline(filename, index + 1))
# Check that bogus data isn't returned (issue #1309567)
empty = linecache.getlines('a/b/c/__init__.py')
self.assertEqual(empty, [])
def test_no_ending_newline(self):
self.addCleanup(support.unlink, support.TESTFN)
with open(support.TESTFN, "w") as fp:
fp.write(SOURCE_3)
lines = linecache.getlines(support.TESTFN)
self.assertEqual(lines, ["\n", "def f():\n", " return 3\n"])
def test_clearcache(self):
cached = []
for entry in TESTS:
filename = os.path.join(TEST_PATH, entry) + '.py'
cached.append(filename)
linecache.getline(filename, 1)
# Are all files cached?
cached_empty = [fn for fn in cached if fn not in linecache.cache]
self.assertEqual(cached_empty, [])
# Can we clear the cache?
linecache.clearcache()
cached_empty = [fn for fn in cached if fn in linecache.cache]
self.assertEqual(cached_empty, [])
def test_checkcache(self):
getline = linecache.getline
# Create a source file and cache its contents
source_name = support.TESTFN + '.py'
self.addCleanup(support.unlink, source_name)
with open(source_name, 'w') as source:
source.write(SOURCE_1)
getline(source_name, 1)
# Keep a copy of the old contents
source_list = []
with open(source_name) as source:
for index, line in enumerate(source):
self.assertEqual(line, getline(source_name, index + 1))
source_list.append(line)
with open(source_name, 'w') as source:
source.write(SOURCE_2)
# Try to update a bogus cache entry
linecache.checkcache('dummy')
# Check that the cache matches the old contents
for index, line in enumerate(source_list):
self.assertEqual(line, getline(source_name, index + 1))
# Update the cache and check whether it matches the new source file
linecache.checkcache(source_name)
with open(source_name) as source:
for index, line in enumerate(source):
self.assertEqual(line, getline(source_name, index + 1))
source_list.append(line)
def test_memoryerror(self):
lines = linecache.getlines(FILENAME)
self.assertTrue(lines)
def raise_memoryerror(*args, **kwargs):
raise MemoryError
with support.swap_attr(linecache, 'updatecache', raise_memoryerror):
lines2 = linecache.getlines(FILENAME)
self.assertEqual(lines2, lines)
linecache.clearcache()
with support.swap_attr(linecache, 'updatecache', raise_memoryerror):
lines3 = linecache.getlines(FILENAME)
self.assertEqual(lines3, [])
self.assertEqual(linecache.getlines(FILENAME), lines)
def test_main():
support.run_unittest(LineCacheTests)
if __name__ == "__main__":
test_main()
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