test_textwrap.py 文件源码

def test_indent_all_lines(self):
        # Add 'prefix' to all lines, including whitespace-only ones.
        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",
        )
        predicate = lambda line: True
        for text, expect in zip(self.CASES, expected):
            self.assertEqual(indent(text, prefix, predicate), expect)