Add a test case for converter

Signed-off-by: Gigon Bae <gbae@nvidia.com>

python/cucim/tests/unit/clara/converter/test_converter.py

@@ -0,0 +1,43 @@
+#
+# Copyright (c) 2022, NVIDIA CORPORATION.
+# 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
+from pathlib import Path
+
+
+def test_image_converter_stripe_4096x4096_256_jpeg(
+        tmp_path,
+        testimg_tiff_stripe_4096x4096_256_jpeg):
+    import tifffile
+
+    from cucim.clara.converter import tiff
+
+    tile_size = 128
+    overlap = 0
+    num_workers = os.cpu_count()
+    file_name = "test_image_converter_stripe_4096x4096_256_jpeg-output.tif"
+    output_path = tmp_path / file_name
+    tiff.svs2tif(testimg_tiff_stripe_4096x4096_256_jpeg, Path(tmp_path),
+                 tile_size, overlap, num_workers, file_name)
+    assert os.path.exists(output_path)
+
+    with tifffile.TiffFile(output_path) as tif:
+        assert len(tif.pages) == 6
+        assert tif.pages[0].shape == (4096, 4096, 3)
+        assert tif.pages[0].tile == (128, 128)
+        assert tif.pages[0].compression == tifffile.COMPRESSION.JPEG
+        assert tif.pages[5].shape == (128, 128, 3)
+        assert tif.pages[5].tile == (128, 128)
+        assert tif.pages[5].compression == tifffile.COMPRESSION.JPEG