def test_empty(self): self.assertEqual(sq(""), "''")
def test_double_quote(self): self.assertEqual(sq('"'), """'"'""")
def test_start_double_quote_x2(self): self.assertEqual(sq('""asdf'), """'""asdf'""")
def test_backslash(self): self.assertEqual(sq(r"fred\bloggs"), r" E'fred\\bloggs'")
def test_newline(self): self.assertEqual(sq("fred\nbloggs"), "'fred\nbloggs'")
def test_end_single_quote_x2(self): self.assertEqual(sq("asdf''"), "'asdf'''''")
def test_start_single_quote_x2(self): self.assertEqual(sq("''asdf"), "'''''asdf'")
def test_single_quote_x2(self): self.assertEqual(sq("''"), "''''''")