test(timestamp): add expression test for timestamp range with express…

…ion inputs

ibis/tests/expr/test_timestamp.py

@@ -184,3 +184,14 @@ def test_timestamp_field_access_on_time_failure(
 def test_integer_timestamp_fails(value):
     with pytest.raises(TypeError, match=r"Use ibis\.literal\(\.\.\.\)\.to_timestamp"):
         ibis.timestamp(value)
+
+
+def test_timestamp_range_with_expr_inputs():
+    start = ibis.now() - ibis.interval(days=1)
+    stop = ibis.now()
+    expr = ibis.range(start, stop, ibis.interval(seconds=1))
+
+    dtype = expr.type()
+
+    assert dtype.is_array()
+    assert dtype.value_type.is_timestamp()