diff --git a/tests/test_UFOZ.py b/tests/test_UFOZ.py
new file mode 100644
index 000000000..d009e5331
--- /dev/null
+++ b/tests/test_UFOZ.py
@@ -0,0 +1,99 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, unicode_literals
+from fontTools.misc.py23 import tostr
+from ufoLib import UFOReader, UFOWriter, UFOFileStructure
+from ufoLib.errors import UFOLibError, GlifLibError
+from ufoLib import plistlib
+import sys
+import os
+import fs.osfs
+import fs.tempfs
+import fs.memoryfs
+import fs.copy
+import pytest
+import warnings
+
+
+TESTDATA = fs.osfs.OSFS(
+    os.path.join(os.path.dirname(__file__), "testdata")
+)
+TEST_UFO3 = "TestFont1 (UFO3).ufo"
+TEST_UFOZ = "TestFont1 (UFO3).ufoz"
+
+
+@pytest.fixture(params=[TEST_UFO3, TEST_UFOZ])
+def testufo(request):
+    name = request.param
+    with fs.tempfs.TempFS() as tmp:
+        if TESTDATA.isdir(name):
+            fs.copy.copy_dir(TESTDATA, name, tmp, name)
+        else:
+            fs.copy.copy_file(TESTDATA, name, tmp, name)
+        yield tmp.getsyspath(name)
+
+
+@pytest.fixture
+def testufoz():
+    with fs.tempfs.TempFS() as tmp:
+        fs.copy.copy_file(TESTDATA, TEST_UFOZ, tmp, TEST_UFOZ)
+        yield tmp.getsyspath(TEST_UFOZ)
+
+
+class TestUFOZ(object):
+
+    def test_read(self, testufoz):
+        with UFOReader(testufoz) as reader:
+            assert reader.fileStructure == UFOFileStructure.ZIP
+            assert reader.formatVersion == 3
+
+    def test_write(self, testufoz):
+        with UFOWriter(testufoz, structure="zip") as writer:
+            writer.writeLib({"hello world": 123})
+        with UFOReader(testufoz) as reader:
+            assert reader.readLib() == {"hello world": 123}
+
+
+def test_pathlike(testufo):
+
+    class PathLike(object):
+
+        def __init__(self, s):
+            self._path = s
+
+        def __fspath__(self):
+            return tostr(self._path, sys.getfilesystemencoding())
+
+    path = PathLike(testufo)
+
+    with UFOReader(path) as reader:
+        assert reader._path == path.__fspath__()
+
+    with UFOWriter(path) as writer:
+        assert writer._path == path.__fspath__()
+
+
+def test_path_attribute_deprecated(testufo):
+    with UFOWriter(testufo) as writer:
+        with pytest.warns(DeprecationWarning, match="The 'path' attribute"):
+            writer.path
+
+
+@pytest.fixture
+def memufo():
+    m = fs.memoryfs.MemoryFS()
+    fs.copy.copy_dir(TESTDATA, TEST_UFO3, m, "/")
+    return m
+
+
+class TestMemoryFS(object):
+
+    def test_init_reader(self, memufo):
+        with UFOReader(memufo) as reader:
+            assert reader.formatVersion == 3
+            assert reader.fileStructure == UFOFileStructure.PACKAGE
+
+    def test_init_writer(self):
+        m = fs.memoryfs.MemoryFS()
+        with UFOWriter(m) as writer:
+            assert m.exists("metainfo.plist")
+            assert writer._path == "<memfs>"