diff --git a/lib/matplotlib/tests/test_units.py b/lib/matplotlib/tests/test_units.py
index fa8e5709db64..a5fd32dfb3e5 100644
--- a/lib/matplotlib/tests/test_units.py
+++ b/lib/matplotlib/tests/test_units.py
@@ -282,8 +282,16 @@ class Kernel:
def __init__(self, array):
self._array = np.asanyarray(array)
- def __array__(self):
- return self._array
+ def __array__(self, dtype=None, copy=None):
+ if dtype is not None and dtype != self._array.dtype:
+ if copy is not None and not copy:
+ raise ValueError(
+ f"Converting array from {self._array.dtype} to "
+ f"{dtype} requires a copy"
+ )
+
+ arr = np.asarray(self._array, dtype=dtype)
+ return (arr if not copy else np.copy(arr))
@property
def shape(self):
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