Method _check_complex_symlinks

Lib/test/test_pathlib/test_pathlib.py:1798–1838

(self, link0_target)

        self._check_complex_symlinks(self.parser.join('dirA', '..'))

    def _check_complex_symlinks(self, link0_target):
        # Test solving a non-looping chain of symlinks (issue #19887).
        parser = self.parser
        P = self.cls(self.base)
        P.joinpath('link1').symlink_to(parser.join('link0', 'link0'), target_is_directory=True)
        P.joinpath('link2').symlink_to(parser.join('link1', 'link1'), target_is_directory=True)
        P.joinpath('link3').symlink_to(parser.join('link2', 'link2'), target_is_directory=True)
        P.joinpath('link0').symlink_to(link0_target, target_is_directory=True)

        # Resolve absolute paths.
        p = (P / 'link0').resolve()
        self.assertEqual(p, P)
        self.assertEqualNormCase(str(p), self.base)
        p = (P / 'link1').resolve()
        self.assertEqual(p, P)
        self.assertEqualNormCase(str(p), self.base)
        p = (P / 'link2').resolve()
        self.assertEqual(p, P)
        self.assertEqualNormCase(str(p), self.base)
        p = (P / 'link3').resolve()
        self.assertEqual(p, P)
        self.assertEqualNormCase(str(p), self.base)

        # Resolve relative paths.
        old_path = os.getcwd()
        os.chdir(self.base)
        try:
            p = self.cls('link0').resolve()
            self.assertEqual(p, P)
            self.assertEqualNormCase(str(p), self.base)
            p = self.cls('link1').resolve()
            self.assertEqual(p, P)
            self.assertEqualNormCase(str(p), self.base)
            p = self.cls('link2').resolve()
            self.assertEqual(p, P)
            self.assertEqualNormCase(str(p), self.base)
            p = self.cls('link3').resolve()
            self.assertEqual(p, P)
            self.assertEqualNormCase(str(p), self.base)
        finally:
            os.chdir(old_path)

    def _check_resolve(self, p, expected, strict=True):
        q = p.resolve(strict)