diff --git a/test/test_schedule.py b/test/test_schedule.py
index 4323d54839..a900995a5d 100644
--- a/test/test_schedule.py
+++ b/test/test_schedule.py
@@ -2048,6 +2048,26 @@ class TestBigGraph(unittest.TestCase):
     sink = tensor_rewrite(a)
     assert UPat.cvar(dtype=dtypes.int).match(sink, {})
 
+  def test_const_folding_mul(self):
+    a = Tensor([1])
+    sink = tensor_rewrite(a*0)
+    assert UPat(Ops.CONST, arg=0).match(sink, {}), f"expected {sink} to collapse to a const 0"
+    assert sink.shape == a.shape
+
+  @unittest.expectedFailure
+  def test_const_folding_ne(self):
+    a = Tensor([1])
+    sink = tensor_rewrite(a != a)
+    assert UPat(Ops.CONST, arg=False).match(sink, {}), f"expected {sink} to collapse to a const False"
+    assert sink.shape == a.shape
+
+  @unittest.expectedFailure
+  def test_const_folding_lt(self):
+    a = Tensor([1])
+    sink = tensor_rewrite(a < a)
+    assert UPat(Ops.CONST, arg=False).match(sink, {}), f"expected {sink} to collapse to a const False"
+    assert sink.shape == a.shape
+
 tensor_const_pm = PatternMatcher([
   (UPat(Ops.CONST, src=(UPat(Ops.VIEW, src=(UPat(Ops.DEVICE),)),)), lambda: True),
   (UPat(Ops.VIEW, src=(UPat(Ops.DEVICE), UPat(Ops.BIND, src=(UPat(Ops.DEFINE_VAR), UPat(Ops.CONST))))), lambda: True),