AndrewZhaoLuo commented on code in PR #12463:
URL: https://github.com/apache/tvm/pull/12463#discussion_r948486545
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tests/python/unittest/test_tir_schedule_trace.py:
##########
@@ -275,5 +284,39 @@ def test_apply_json_to_schedule_1():
tvm.ir.assert_structural_equal(elementwise_inlined, sch.mod["main"])
+def _test_apply_annotation_trace_from_json(annotation: str):
+ """Test applying an annotation works without crashing.
+
+ Designed to handle some previously failing edge cases like the
+ empty string.
+ """
+ b0 = BlockRV()
+ trace = Trace(
+ insts=[
+ _make_get_block(name="B", output=b0),
+ _make_annotate(block=b0, annotation=annotation),
+ ],
+ decisions={},
+ )
+ json_obj = trace.as_json()
+ sch = tir.Schedule(elementwise, debug_mask="all")
+ Trace.apply_json_to_schedule(json_obj, sch)
+ tvm.ir.assert_structural_equal(elementwise_inlined, sch.mod["main"])
+
+
+def test_apply_annotation_from_json():
+ # Something reasonable
+ _test_apply_annotation_trace_from_json("SSRSSR")
+
+ # The empty string
+ _test_apply_annotation_trace_from_json("")
+
+ # A string of two quotation marks
+ _test_apply_annotation_trace_from_json('""')
Review Comment:
This is for completeness of the unittest
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