Mark test_binstats_quantile as xfail on GMT<6.5

Xref GenericMappingTools/gmt#8243

Author: weiji14

pygmt/tests/test_binstats.py

@@ -53,6 +53,11 @@ def test_binstats_no_outgrid():
     npt.assert_allclose(temp_grid.mean(), 4227489)
 
 
+# TODO(GMT>=6.5.0): Remove the xfail marker for the upstream bug fixed in GMT 6.5.0.
+@pytest.mark.xfail(
+    condition=Version(__gmt_version__) < Version("6.5.0"),
+    reason="Upstream bug fixed in https://github.com/GenericMappingTools/gmt/pull/8243",
+)
 def test_binstats_quantile():
     """
     Test binstats quantile statistic functionality.
@@ -71,11 +76,6 @@ def test_binstats_quantile():
     assert temp_grid.gmt.registration is GridRegistration.GRIDLINE
     assert temp_grid.dtype == "float32"
     npt.assert_allclose(temp_grid.max(), 15047685)
-    if Version(__gmt_version__) > Version("6.4.0"):
-        npt.assert_allclose(temp_grid.min(), 53)
-        npt.assert_allclose(temp_grid.median(), 543664.5)
-        npt.assert_allclose(temp_grid.mean(), 1661363.6)
-    else:  # TODO(GMT>=6.5.0): Remove if-condition with different min/median/mean values
-        npt.assert_allclose(temp_grid.min(), 0)
-        npt.assert_allclose(temp_grid.median(), 330700.0)
-        npt.assert_allclose(temp_grid.mean(), 1459889.1)
+    npt.assert_allclose(temp_grid.min(), 53)
+    npt.assert_allclose(temp_grid.median(), 543664.5)
+    npt.assert_allclose(temp_grid.mean(), 1661363.6)