def test_indent_explicit_default(self):
# Test default indenting of lines that are not whitespace only
prefix = ' '
expected = (
# Basic test case
" Hi.\n This is a test.\n Testing.",
# Include a blank line
" Hi.\n This is a test.\n\n Testing.",
# Include leading and trailing blank lines
"\n Hi.\n This is a test.\n Testing.\n",
# Use Windows line endings
" Hi.\r\n This is a test.\r\n Testing.\r\n",
# Pathological case
"\n Hi.\r\n This is a test.\n\r\n Testing.\r\n\n",
)
for text, expect in zip(self.CASES, expected):
self.assertEqual(indent(text, prefix, None), expect)
def test_indent_empty_lines(self):
# Add 'prefix' solely to whitespace-only lines.
prefix = ' '
expected = (
# Basic test case
"Hi.\nThis is a test.\nTesting.",
# Include a blank line
"Hi.\nThis is a test.\n \nTesting.",
# Include leading and trailing blank lines
" \nHi.\nThis is a test.\nTesting.\n",
# Use Windows line endings
"Hi.\r\nThis is a test.\r\nTesting.\r\n",
# Pathological case
" \nHi.\r\nThis is a test.\n \r\nTesting.\r\n \n",
)
predicate = lambda line: not line.strip()
for text, expect in zip(self.CASES, expected):
self.assertEqual(indent(text, prefix, predicate), expect)
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)
def test_indent_no_lines(self):
# Explicitly skip indenting any lines
predicate = lambda line: False
for text in self.CASES:
self.assertEqual(indent(text, ' ', predicate), text)
def test_indent_nomargin_all_lines(self):
# The same as test_indent_nomargin, but using the optional
# predicate argument
predicate = lambda line: True
for text in self.CASES:
self.assertEqual(indent(text, '', predicate), text)
def test_indent_nomargin_explicit_default(self):
# The same as test_indent_nomargin, but explicitly requesting
# the default behaviour by passing None as the predicate
for text in self.CASES:
self.assertEqual(indent(text, '', None), text)
def test_indent_nomargin_default(self):
# indent should do nothing if 'prefix' is empty.
for text in self.CASES:
self.assertEqual(indent(text, ''), text)