diff --git a/tests/test_openslide_reader.py b/tests/test_openslide_reader.py
deleted file mode 100644
index 55e49fcb28..0000000000
--- a/tests/test_openslide_reader.py
+++ /dev/null
@@ -1,96 +0,0 @@
-# Copyright 2020 - 2021 MONAI Consortium
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#     http://www.apache.org/licenses/LICENSE-2.0
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-import unittest
-from unittest import skipUnless
-
-import numpy as np
-from numpy.testing import assert_array_equal
-from parameterized import parameterized
-
-from monai.apps.utils import download_url
-from monai.data.image_reader import WSIReader
-from monai.utils import optional_import
-
-_, has_osl = optional_import("openslide")
-
-
-FILE_URL = "https://drive.google.com/uc?id=1sGTKZlJBIz53pfqTxoTqiIQzIoEzHLAe"
-base_name, extension = FILE_URL.split("id=")[1], ".tiff"
-FILE_PATH = os.path.join(os.path.dirname(__file__), "testing_data", "temp_" + base_name + extension)
-
-HEIGHT = 32914
-WIDTH = 46000
-
-TEST_CASE_0 = [FILE_PATH, (3, HEIGHT, WIDTH)]
-
-TEST_CASE_1 = [
-    FILE_PATH,
-    {"location": (HEIGHT // 2, WIDTH // 2), "size": (2, 1), "level": 0},
-    np.array([[[246], [246]], [[246], [246]], [[246], [246]]]),
-]
-
-TEST_CASE_2 = [
-    FILE_PATH,
-    {"location": (0, 0), "size": (2, 1), "level": 2},
-    np.array([[[239], [239]], [[239], [239]], [[239], [239]]]),
-]
-
-TEST_CASE_3 = [
-    FILE_PATH,
-    {"location": (0, 0), "size": (8, 8), "level": 2, "grid_shape": (2, 1), "patch_size": 2},
-    np.array(
-        [
-            [[[239, 239], [239, 239]], [[239, 239], [239, 239]], [[239, 239], [239, 239]]],
-            [[[242, 242], [242, 243]], [[242, 242], [242, 243]], [[242, 242], [242, 243]]],
-        ]
-    ),
-]
-
-TEST_CASE_4 = [
-    FILE_PATH,
-    {"location": (0, 0), "size": (8, 8), "level": 2, "grid_shape": (2, 1), "patch_size": 1},
-    np.array([[[[239]], [[239]], [[239]]], [[[243]], [[243]], [[243]]]]),
-]
-
-
-class TestOpenSlideReader(unittest.TestCase):
-    @skipUnless(has_osl, "Requires OpenSlide")
-    def setUp(self):
-        download_url(FILE_URL, FILE_PATH, "5a3cfd4fd725c50578ddb80b517b759f")
-
-    @parameterized.expand([TEST_CASE_0])
-    def test_read_whole_image(self, file_path, expected_shape):
-        reader = WSIReader("OpenSlide")
-        img_obj = reader.read(file_path)
-        img = reader.get_data(img_obj)[0]
-        self.assertTupleEqual(img.shape, expected_shape)
-
-    @parameterized.expand([TEST_CASE_1, TEST_CASE_2])
-    def test_read_region(self, file_path, patch_info, expected_img):
-        reader = WSIReader("OpenSlide")
-        img_obj = reader.read(file_path)
-        img = reader.get_data(img_obj, **patch_info)[0]
-        self.assertTupleEqual(img.shape, expected_img.shape)
-        self.assertIsNone(assert_array_equal(img, expected_img))
-
-    @parameterized.expand([TEST_CASE_3, TEST_CASE_4])
-    def test_read_patches(self, file_path, patch_info, expected_img):
-        reader = WSIReader("OpenSlide")
-        img_obj = reader.read(file_path)
-        img = reader.get_data(img_obj, **patch_info)[0]
-        self.assertTupleEqual(img.shape, expected_img.shape)
-        self.assertIsNone(assert_array_equal(img, expected_img))
-
-
-if __name__ == "__main__":
-    unittest.main()