style: limit line length to 79 characters

Limited the lengths of all lines to 79 characters (if possible).
Additionally, some other lines were breaked for consistence.

tests/unit/utils/test_assert_that_is_instance.py

@@ -31,13 +31,37 @@ def test_assert_that_is_instance(obj, class_or_tuple):
     assert_that_is_instance(obj, class_or_tuple)
 
 @pytest.mark.parametrize('obj,class_or_tuple,expected_exception_msg', [
-    (1, str, 'expected \'str\', got \'int\''),
-    (1, (str,), 'expected \'str\', got \'int\''),
-    (1, str | float, 'expected either \'str\' or \'float\', got \'int\''),
-    (1, str | float | list, 'expected either \'str\', \'float\' or \'list\', got \'int\''),
-    (1, TestType, 'expected \'NOT TestType\', got \'int\''),
+    (
+        1,
+        str,
+        'expected \'str\', got \'int\''
+    ),
+    (
+        1,
+        (str,),
+        'expected \'str\', got \'int\''
+    ),
+    (
+        1,
+        str | float,
+        'expected either \'str\' or \'float\', got \'int\''
+    ),
+    (
+        1,
+        str | float | list,
+        'expected either \'str\', \'float\' or \'list\', got \'int\''
+    ),
+    (
+        1,
+        TestType,
+        'expected \'NOT TestType\', got \'int\''
+    ),
 ])
-def test_assert_that_is_instance_exceptions(obj, class_or_tuple, expected_exception_msg):
+def test_assert_that_is_instance_exceptions(
+    obj,
+    class_or_tuple,
+    expected_exception_msg
+):
     with pytest.raises(TypeError) as exc_info:
         assert_that_is_instance(obj, class_or_tuple)
     assert str(exc_info.value) == expected_exception_msg

tests/unit/utils/test_human_readable_list.py

@@ -48,7 +48,12 @@ import pytest
     ([1, 2, 3], 'and', '\'', '\'1\', \'2\' and \'3\''),
     ([1, 2, 3], '', '\'', '\'1\', \'2\'  \'3\''),
     ([1, 2, 3, 42, 'a', 23], 'and', '', '1, 2, 3, 42, a and 23'),
-    ([1, 2, 3, 42, 'a', 23], 'and', '\'', '\'1\', \'2\', \'3\', \'42\', \'a\' and \'23\''),
+    (
+        [1, 2, 3, 42, 'a', 23],
+        'and',
+        '\'',
+        '\'1\', \'2\', \'3\', \'42\', \'a\' and \'23\''
+    ),
 ])
 def test_human_readable_list(ls, final_separator, quotation_mark, expected):
     assert human_readable_list(ls, final_separator, quotation_mark) == expected