Fix docs for offset in get_histories and add test

bioblend/_tests/TestGalaxyHistories.py

@@ -70,6 +70,15 @@ def test_get_histories(self):
         all_histories = self.gi.histories.get_histories()
         assert len(all_histories) > 0
 
+        # Test limit and offset
+        first = self.gi.histories.get_histories(limit=1)
+        others = self.gi.histories.get_histories(offset=1)
+        assert len(others) > 0  # guess the test makes more sense with at least 2 histories
+        assert [h["id"] for h in all_histories] == [h["id"] for h in first] + [h["id"] for h in others]
+
+        out_of_limit = self.gi.histories.get_histories(offset=1000000)
+        assert out_of_limit == []
+
         # Check whether id is present, when searched by name
         histories = self.gi.histories.get_histories(name=self.default_history_name)
         assert len([h for h in histories if h["id"] == self.history["id"]]) == 1

bioblend/galaxy/dataset_collections/__init__.py

@@ -33,7 +33,7 @@ def __init__(
         self.name = name
         self.type = type
         if isinstance(elements, dict):
-            self.elements: List[Union["CollectionElement", "SimpleElement"]] = [
+            self.elements: List[Union[CollectionElement, SimpleElement]] = [
                 HistoryDatasetElement(name=key, id=value) for key, value in elements.values()
             ]
         elif elements:

bioblend/galaxy/histories/__init__.py

@@ -218,8 +218,8 @@ def get_histories(
         :param limit: How many items to return (upper bound).
 
         :type offset: int
-        :param offset: skip the first ( offset - 1 ) items and begin returning
-          at the Nth item.
+        :param offset: skip the first (offset) items and begin returning
+          items at index offset (i.e. start with the element offset+1).
 
         :rtype: list
         :return: List of history dicts.