issue 194: fix tests

Author: Alessandro Marin

pytests.py

@@ -357,9 +357,9 @@ def test_execute_err_abort(tdir):
                                  encoding='utf8')
             assert out.returncode == 0
             assert os.path.exists(os.path.join(tdir, fname_err + '.' + extension))
-            #with open(os.path.join(tdir, fname_err + '.' + extension), 'r') as f:
-            #    fout = f.read()
-            #assert 'unexpected EOF' in fout  #this can fail in GitHub actions
+            with open(os.path.join(tdir, fname_err + '.' + extension), 'r') as f:
+                fout = f.read()
+            assert 'unexpected EOF' in fout
             os.remove(os.path.join(tdir, fname_err + '.' + extension))
         # ipynb format 
         format = 'ipynb'
@@ -375,9 +375,9 @@ def test_execute_err_abort(tdir):
                              encoding='utf8')
         assert out.returncode == 0
         assert os.path.exists(os.path.join(tdir, fname_err + '.' + extension))
-        #with open(os.path.join(tdir, fname_err + '.' + extension), 'r') as f:
-        #    fout = f.read()
-        # assert 'unexpected EOF' in fout  #this can fail in GitHub actions
+        with open(os.path.join(tdir, fname_err + '.' + extension), 'r') as f:
+            fout = f.read()
+        assert 'unexpected EOF' in fout
         os.remove(os.path.join(tdir, fname_err + '.' + extension))
 
 
@@ -664,8 +664,8 @@ def test_doconce_exercises_in_zip(change_test_dir, tdir):
         assert os.path.exists(os.path.join(fname_unzipped, 'solutions.do.txt'))
         with open(os.path.join(fname_unzipped,'solutions.do.txt'), 'r') as f:
             do = f.read()
-        assert '__a) Solution.__' in do
-        assert '__a) Solution.__\n!bc pycod' in do
+        assert '__Solution.__' in do
+        assert '__Solution.__\n!bc pycod' in do
         assert '#--- ' not in do