def test_dedent_preserve_internal_tabs(self):
text = " hello\tthere\n how are\tyou?"
expect = "hello\tthere\nhow are\tyou?"
self.assertEqual(expect, dedent(text))
# make sure that it preserves tabs when it's not making any
# changes at all
self.assertEqual(expect, dedent(expect))
def test_dedent_even(self):
# All lines indented by two spaces.
text = " Hello there.\n How are ya?\n Oh good."
expect = "Hello there.\nHow are ya?\nOh good."
self.assertEqual(expect, dedent(text))
# Same, with blank lines.
text = " Hello there.\n\n How are ya?\n Oh good.\n"
expect = "Hello there.\n\nHow are ya?\nOh good.\n"
self.assertEqual(expect, dedent(text))
# Now indent one of the blank lines.
text = " Hello there.\n \n How are ya?\n Oh good.\n"
expect = "Hello there.\n\nHow are ya?\nOh good.\n"
self.assertEqual(expect, dedent(text))
def test_dedent_preserve_margin_tabs(self):
text = " hello there\n\thow are you?"
self.assertUnchanged(text)
# same effect even if we have 8 spaces
text = " hello there\n\thow are you?"
self.assertUnchanged(text)
# dedent() only removes whitespace that can be uniformly removed!
text = "\thello there\n\thow are you?"
expect = "hello there\nhow are you?"
self.assertEqual(expect, dedent(text))
text = " \thello there\n \thow are you?"
self.assertEqual(expect, dedent(text))
text = " \t hello there\n \t how are you?"
self.assertEqual(expect, dedent(text))
text = " \thello there\n \t how are you?"
expect = "hello there\n how are you?"
self.assertEqual(expect, dedent(text))
def test_dedent_uneven(self):
# Lines indented unevenly.
text = '''\
def foo():
while 1:
return foo
'''
expect = '''\
def foo():
while 1:
return foo
'''
self.assertEqual(expect, dedent(text))
# Uneven indentation with a blank line.
text = " Foo\n Bar\n\n Baz\n"
expect = "Foo\n Bar\n\n Baz\n"
self.assertEqual(expect, dedent(text))
# Uneven indentation with a whitespace-only line.
text = " Foo\n Bar\n \n Baz\n"
expect = "Foo\n Bar\n\n Baz\n"
self.assertEqual(expect, dedent(text))
def assertUnchanged(self, text):
"""assert that dedent() has no effect on 'text'"""
self.assertEqual(text, dedent(text))
def test_roundtrip_mixed(self):
# A whitespace prefix should roundtrip with dedent
for text in self.ROUNDTRIP_CASES:
self.assertEqual(dedent(indent(text, ' \t \t ')), text)
