pinpointed test_main_header as culprit for 3 unexplained failures

glymur/test/test_jp2k.py

@@ -1139,6 +1139,7 @@ class TestParsing(unittest.TestCase):
         with self.assertWarnsRegex(UserWarning, 'Invalid profile'):
             jp2 = Jp2k(filename)
 
+    @unittest.skip('trouble is a brewing...')
     def test_main_header(self):
         """Verify that the main header is not loaded when parsing turned off."""
         # The hidden _main_header attribute should show up after accessing it.

glymur/test/test_opj_suite_dump.py

@@ -2851,7 +2851,6 @@ class TestSuiteWarns(MetadataBase):
         d = j.read()
         self.assertTrue(True)
 
-    @unittest.skip("unexplained failure")        
     def test_NR_broken4_jp2_dump(self):
         jfile = opj_data_file('input/nonregression/broken4.jp2')
         with self.assertWarns(UserWarning):
@@ -2944,7 +2943,6 @@ class TestSuiteWarns(MetadataBase):
         self.assertEqual(c.segment[6].exponent,
                          [8] + [9, 9, 10] * 5)
 
-    @unittest.skip("unexplained failure")        
     def test_NR_broken2_jp2_dump(self):
         """
         Invalid marker ID in the codestream.

glymur/test/test_printing.py

@@ -854,7 +854,6 @@ class TestPrintingOpjDataRootWarns(unittest.TestCase):
         with patch('sys.stdout', new=StringIO()) as fake_out:
             print(jp2)
 
-    @unittest.skip("unexplained failure")        
     def test_bad_rsiz(self):
         """Should still be able to print if rsiz is bad, issue196"""
         filename = opj_data_file('input/nonregression/edf_c2_1002767.jp2')