Backport PR #32442: CI: fix test_matplotlib_scatter_datetime64 (#32445)

Co-authored-by: William Ayd <[email protected]>

Author: simonjayhawkins

pandas/plotting/_matplotlib/compat.py

@@ -20,3 +20,4 @@ def inner():
 _mpl_ge_2_2_3 = _mpl_version("2.2.3", operator.ge)
 _mpl_ge_3_0_0 = _mpl_version("3.0.0", operator.ge)
 _mpl_ge_3_1_0 = _mpl_version("3.1.0", operator.ge)
+_mpl_ge_3_2_0 = _mpl_version("3.2.0", operator.ge)

pandas/tests/plotting/common.py

@@ -34,6 +34,7 @@ def setup_method(self, method):
         self.mpl_ge_2_2_3 = compat._mpl_ge_2_2_3()
         self.mpl_ge_3_0_0 = compat._mpl_ge_3_0_0()
         self.mpl_ge_3_1_0 = compat._mpl_ge_3_1_0()
+        self.mpl_ge_3_2_0 = compat._mpl_ge_3_2_0()
 
         self.bp_n_objects = 7
         self.polycollection_factor = 2

pandas/tests/plotting/test_datetimelike.py

@@ -1463,7 +1463,9 @@ def test_matplotlib_scatter_datetime64(self):
         ax.scatter(x="time", y="y", data=df)
         self.plt.draw()
         label = ax.get_xticklabels()[0]
-        if self.mpl_ge_3_0_0:
+        if self.mpl_ge_3_2_0:
+            expected = "2018-01-01"
+        elif self.mpl_ge_3_0_0:
             expected = "2017-12-08"
         else:
             expected = "2017-12-12"