Fix tests with recent Python

tests/tiff_test/test_tag_compare.py

@@ -28,8 +28,8 @@ class OutputTagExtract(metaclass=system_tests.CaseMeta):
             tmp = line.split()
 
             exif, image, tag = tmp[0].split('.')
-            self.assertEquals(exif, "Exif")
-            self.assertEquals(image, "Image")
+            self.assertEqual(exif, "Exif")
+            self.assertEqual(image, "Image")
 
             data.append({
                 "tag": tag,
@@ -87,13 +87,13 @@ class OutputTagExtract(metaclass=system_tests.CaseMeta):
         """
         for pa_elem, pS_elem in zip(self.pa_data, self.pS_data):
             for key in ["tag", "type", "len"]:
-                self.assertEquals(pa_elem[key], pS_elem[key])
+                self.assertEqual(pa_elem[key], pS_elem[key])
 
             if pa_elem["tag"] in [
                     "ImageWidth", "ImageLength", "BitsPerSample",
                     "DocumentName", "ImageDescription", "StripOffsets",
                     "SamplesPerPixel", "StripByteCounts"]:
-                self.assertEquals(pa_elem["val"], pS_elem["val"])
+                self.assertEqual(pa_elem["val"], pS_elem["val"])
 
     def compare_stdout(self, i, command, got_stdout, expected_stdout):
         super().compare_stdout(i, command, got_stdout, expected_stdout)