Merge branch 'tabs-slice' into 'master'

Allow Tabs object to be sliced

See merge request poezio/poezio!11

poezio/core/tabs.py

@@ -67,10 +67,10 @@ class Tabs:
     def __iter__(self):
         return iter(self._tabs)
 
-    def __getitem__(self, index: Union[int, str]):
-        if isinstance(index, int):
-            return self._tabs[index]
-        return self.by_name(index)
+    def __getitem__(self, index: Union[int, str, slice]):
+        if isinstance(index, str):
+            return self.by_name(index)
+        return self._tabs[index]
 
     def first(self) -> tabs.Tab:
         """Return the Roster tab"""

test/test_tabs.py

@@ -172,3 +172,14 @@ def test_set_current():
     tabs.set_current_tab(dummy2)
     assert tabs.current_tab is dummy2
 
+def test_slice():
+    DummyTab.reset()
+    tabs = Tabs(h)
+    dummy = DummyTab()
+    dummy2 = DummyTab()
+    dummy3 = DummyTab()
+    tabs.append(dummy)
+    tabs.append(dummy2)
+    tabs.append(dummy3)
+
+    assert tabs[1:2][0] is dummy2