1 files changed, 70 insertions, 6 deletions
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
index a60dc11..33e5dfc 100644
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -5,6 +5,7 @@ import io
 import itertools
 import os
 import pathlib
+import platform
 import posixpath
 import string
 import struct
@@ -3282,7 +3283,11 @@ with zipfile.ZipFile(io.BytesIO(), "w") as zf:
 
     def test_malformed_paths(self):
         """
-        Path should handle malformed paths.
+        Path should handle malformed paths gracefully.
+
+        Paths with leading slashes are not visible.
+
+        Paths with dots are treated like regular files.
         """
         data = io.BytesIO()
         zf = zipfile.ZipFile(data, "w")
@@ -3291,11 +3296,70 @@ with zipfile.ZipFile(io.BytesIO(), "w") as zf:
         zf.writestr("../parent.txt", b"content")
         zf.filename = ''
         root = zipfile.Path(zf)
-        assert list(map(str, root.iterdir())) == [
-            'one-slash.txt',
-            'two-slash.txt',
-            'parent.txt',
-        ]
+        assert list(map(str, root.iterdir())) == ['../']
+        assert root.joinpath('..').joinpath('parent.txt').read_bytes() == b'content'
+
+    @unittest.skipIf(platform.system() == "Windows", "GH-123693")
+    def test_unsupported_names(self):
+        """
+        Path segments with special characters are readable.
+
+        On some platforms or file systems, characters like
+        ``:`` and ``?`` are not allowed, but they are valid
+        in the zip file.
+        """
+        data = io.BytesIO()
+        zf = zipfile.ZipFile(data, "w")
+        zf.writestr("path?", b"content")
+        zf.writestr("V: NMS.flac", b"fLaC...")
+        zf.filename = ''
+        root = zipfile.Path(zf)
+        contents = root.iterdir()
+        assert next(contents).name == 'path?'
+        item = next(contents)
+        assert item.name == 'V: NMS.flac', item.name
+        assert root.joinpath('V: NMS.flac').read_bytes() == b"fLaC..."
+
+    @unittest.skipIf(platform.system() == "Windows", "GH-123693")
+    def test_backslash_not_separator(self):
+        """
+        In a zip file, backslashes are not separators.
+        """
+        data = io.BytesIO()
+        zf = zipfile.ZipFile(data, "w")
+        zf.writestr(DirtyZipInfo.for_name("foo\\bar", zf), b"content")
+        zf.filename = ''
+        root = zipfile.Path(zf)
+        (first,) = root.iterdir()
+        assert not first.is_dir()
+        assert first.name == 'foo\\bar', first.name
+
+
+class DirtyZipInfo(zipfile.ZipInfo):
+    """
+    Bypass name sanitization.
+    """
+
+    def __init__(self, filename, *args, **kwargs):
+        super().__init__(filename, *args, **kwargs)
+        self.filename = filename
+
+    @classmethod
+    def for_name(cls, name, archive):
+        """
+        Construct the same way that ZipFile.writestr does.
+
+        TODO: extract this functionality and re-use
+        """
+        self = cls(filename=name, date_time=time.localtime(time.time())[:6])
+        self.compress_type = archive.compression
+        self.compress_level = archive.compresslevel
+        if self.filename.endswith('/'):  # pragma: no cover
+            self.external_attr = 0o40775 << 16  # drwxrwxr-x
+            self.external_attr |= 0x10  # MS-DOS directory flag
+        else:
+            self.external_attr = 0o600 << 16  # ?rw-------
+        return self
 
 
 class StripExtraTests(unittest.TestCase):