fix: test; should plot in order and not sorted

Author: sharonwoo

pandas/plotting/_matplotlib/core.py

@@ -1807,13 +1807,12 @@ def orientation(self) -> PlottingOrientation:
 
     # GH56611 checks similar to LinePlot's _is_ts_plot and _use_dynamic_x
     @final
-    def _is_usable_series(self) -> bool:
-        return self._is_series and not (
-            self.use_index and use_dynamic_x(self._get_ax(0), self.data)
-        )
+    def _is_ts_plot(self, data) -> bool:
+        return self.use_index and use_dynamic_x(self._get_ax(0), data)
 
+    @final
     def _set_tick_pos(self, data) -> np.ndarray:
-        if self._is_usable_series():
+        if self._is_series and not self._is_ts_plot(data):
             return np.array(self._get_xticks(), dtype=int)
         else:
             return np.arange(len(data))

pandas/tests/plotting/test_series.py

@@ -919,10 +919,7 @@ def test_plot_order(self, data, index):
         ax = ser.plot(kind="bar")
 
         expected = ser.tolist()
-        result = [
-            patch.get_bbox().ymax
-            for patch in sorted(ax.patches, key=lambda patch: patch.get_bbox().xmax)
-        ]
+        result = [patch.get_bbox().ymax for patch in ax.patches]
         assert expected == result
 
     def test_style_single_ok(self):