diff --git a/test/test_YoutubeDL.py b/test/test_YoutubeDL.py
index 966d27a498..4773413139 100644
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@@ -549,6 +549,82 @@ class TestFormatSelection(unittest.TestCase):
             ydl.process_ie_result(info_dict)
         self.assertEqual(ydl.downloaded_info_dicts, [])
 
+        formats2 = [
+            {'format_id': 'H', 'aspect_ratio': 1.0},  # 1:1
+            {'format_id': 'I', 'aspect_ratio': 1.33},  # 4:3
+            {'format_id': 'J', 'aspect_ratio': 1.5},  # 3:2
+            {'format_id': 'K', 'aspect_ratio': 1.78},  # 16:9
+            {'format_id': 'L', 'aspect_ratio': 2.33},  # 21:9
+            {'format_id': 'M', 'aspect_ratio': 0.75},  # 3:4
+            {'format_id': 'N', 'aspect_ratio': 0.67},  # 2:3
+            {'format_id': 'O', 'aspect_ratio': 0.56},  # 9:16
+            {'format_id': 'P', 'aspect_ratio': 0.43},  # 9:21
+            {'format_id': 'Q', 'aspect_ratio': 1.01},
+            {'format_id': 'R', 'aspect_ratio': 1.99},
+            {'format_id': 'T'},
+            {'format_id': 'S', 'aspect_ratio': 0.99},
+        ]
+        for f in formats2:
+            f['url'] = 'http://_/'
+            f['ext'] = 'unknown'
+
+        info_dict2 = _make_result(formats2, _format_sort_fields=('id', ))
+
+        ydl = YDL({'format': 'best[aspect_ratio=1]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'H')
+
+        ydl = YDL({'format': 'all[aspect_ratio > 1.00]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['R', 'Q', 'L', 'K', 'J', 'I'])
+
+        ydl = YDL({'format': 'all[aspect_ratio < 1.00]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['S', 'P', 'O', 'N', 'M'])
+
+        ydl = YDL({'format': 'all[aspect_ratio>1.05]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['R', 'L', 'K', 'J', 'I'])
+
+        ydl = YDL({'format': 'all [aspect_ratio < 0.950]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['P', 'O', 'N', 'M'])
+
+        ydl = YDL({'format': 'best[aspect_ratio=1.5]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'J')
+
+        ydl = YDL({'format': 'all[aspect_ratio < 0.95], all[aspect_ratio>1.05]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['P', 'O', 'N', 'M', 'R', 'L', 'K', 'J', 'I'])
+
+        ydl = YDL({'format': 'all[aspect_ratio>=0.95][aspect_ratio <= 1.05]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['S', 'Q', 'H'])
+
+        ydl = YDL({'format': 'all[aspect_ratio!=1]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['S', 'R', 'Q', 'P', 'O', 'N', 'M', 'L', 'K', 'J', 'I'])
+
+        ydl = YDL({'format': 'all[aspect_ratio!=1]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['S', 'R', 'Q', 'P', 'O', 'N', 'M', 'L', 'K', 'J', 'I'])
+
+        ydl = YDL({'format': 'best[aspect_ratio >=? 3.33]'})
+        ydl.process_ie_result(info_dict2)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'T')
+
     @patch('yt_dlp.postprocessor.ffmpeg.FFmpegMergerPP.available', False)
     def test_default_format_spec_without_ffmpeg(self):
         ydl = YDL({})