Preview: test_grep.py
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/opt/alt/python37/lib64/python3.7/idlelib/idle_test/test_grep.py
""" !Changing this line will break Test_findfile.test_found!
Non-gui unit tests for grep.GrepDialog methods.
dummy_command calls grep_it calls findfiles.
An exception raised in one method will fail callers.
Otherwise, tests are mostly independent.
Currently only test grep_it, coverage 51%.
"""
from idlelib import grep
import unittest
from test.support import captured_stdout
from idlelib.idle_test.mock_tk import Var
import os
import re
class Dummy_searchengine:
'''GrepDialog.__init__ calls parent SearchDiabolBase which attaches the
passed in SearchEngine instance as attribute 'engine'. Only a few of the
many possible self.engine.x attributes are needed here.
'''
def getpat(self):
return self._pat
searchengine = Dummy_searchengine()
class Dummy_grep:
# Methods tested
#default_command = GrepDialog.default_command
grep_it = grep.GrepDialog.grep_it
# Other stuff needed
recvar = Var(False)
engine = searchengine
def close(self): # gui method
pass
_grep = Dummy_grep()
class FindfilesTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.realpath = os.path.realpath(__file__)
cls.path = os.path.dirname(cls.realpath)
@classmethod
def tearDownClass(cls):
del cls.realpath, cls.path
def test_invaliddir(self):
with captured_stdout() as s:
filelist = list(grep.findfiles('invaliddir', '*.*', False))
self.assertEqual(filelist, [])
self.assertIn('invalid', s.getvalue())
def test_curdir(self):
# Test os.curdir.
ff = grep.findfiles
save_cwd = os.getcwd()
os.chdir(self.path)
filename = 'test_grep.py'
filelist = list(ff(os.curdir, filename, False))
self.assertIn(os.path.join(os.curdir, filename), filelist)
os.chdir(save_cwd)
def test_base(self):
ff = grep.findfiles
readme = os.path.join(self.path, 'README.txt')
# Check for Python files in path where this file lives.
filelist = list(ff(self.path, '*.py', False))
# This directory has many Python files.
self.assertGreater(len(filelist), 10)
self.assertIn(self.realpath, filelist)
self.assertNotIn(readme, filelist)
# Look for .txt files in path where this file lives.
filelist = list(ff(self.path, '*.txt', False))
self.assertNotEqual(len(filelist), 0)
self.assertNotIn(self.realpath, filelist)
self.assertIn(readme, filelist)
# Look for non-matching pattern.
filelist = list(ff(self.path, 'grep.*', False))
self.assertEqual(len(filelist), 0)
self.assertNotIn(self.realpath, filelist)
def test_recurse(self):
ff = grep.findfiles
parent = os.path.dirname(self.path)
grepfile = os.path.join(parent, 'grep.py')
pat = '*.py'
# Get Python files only in parent directory.
filelist = list(ff(parent, pat, False))
parent_size = len(filelist)
# Lots of Python files in idlelib.
self.assertGreater(parent_size, 20)
self.assertIn(grepfile, filelist)
# Without subdirectories, this file isn't returned.
self.assertNotIn(self.realpath, filelist)
# Include subdirectories.
filelist = list(ff(parent, pat, True))
# More files found now.
self.assertGreater(len(filelist), parent_size)
self.assertIn(grepfile, filelist)
# This file exists in list now.
self.assertIn(self.realpath, filelist)
# Check another level up the tree.
parent = os.path.dirname(parent)
filelist = list(ff(parent, '*.py', True))
self.assertIn(self.realpath, filelist)
class Grep_itTest(unittest.TestCase):
# Test captured reports with 0 and some hits.
# Should test file names, but Windows reports have mixed / and \ separators
# from incomplete replacement, so 'later'.
def report(self, pat):
_grep.engine._pat = pat
with captured_stdout() as s:
_grep.grep_it(re.compile(pat), __file__)
lines = s.getvalue().split('\n')
lines.pop() # remove bogus '' after last \n
return lines
def test_unfound(self):
pat = 'xyz*'*7
lines = self.report(pat)
self.assertEqual(len(lines), 2)
self.assertIn(pat, lines[0])
self.assertEqual(lines[1], 'No hits.')
def test_found(self):
pat = '""" !Changing this line will break Test_findfile.test_found!'
lines = self.report(pat)
self.assertEqual(len(lines), 5)
self.assertIn(pat, lines[0])
self.assertIn('py: 1:', lines[1]) # line number 1
self.assertIn('2', lines[3]) # hits found 2
self.assertTrue(lines[4].startswith('(Hint:'))
class Default_commandTest(unittest.TestCase):
# To write this, move outwin import to top of GrepDialog
# so it can be replaced by captured_stdout in class setup/teardown.
pass
if __name__ == '__main__':
unittest.main(verbosity=2)
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