Restore tests

Author: cvanelteren

ultraplot/tests/test_legend.py

@@ -608,6 +608,14 @@ def test_ref_with_single_axis():
     assert leg is not None
 
 
+def test_ref_with_manual_axes_no_subplotspec():
+    """Test using ref with axes that don't have subplotspec."""
+    fig = uplt.figure()
+    ax1 = fig.add_axes([0.1, 0.1, 0.4, 0.4])
+    ax2 = fig.add_axes([0.5, 0.1, 0.4, 0.4])
+    ax1.plot([0, 1], [0, 1], label="line")
+
+
 def _decode_panel_span(panel_ax, axis):
     ss = panel_ax.get_subplotspec().get_topmost_subplotspec()
     r1, r2, c1, c2 = ss._get_rows_columns()