areusch commented on code in PR #11464:
URL: https://github.com/apache/tvm/pull/11464#discussion_r900355444


##########
tests/python/unittest/test_micro_model_library_format.py:
##########
@@ -95,8 +101,35 @@ def test_export_operator_model_library_format():
             assert tir_f.read() == str(ir_mod)
 
 
[email protected]_micro
+def test_export_multiple_operator_model_library_format():
+    target = tvm.target.target.micro("host")
+    with tvm.transform.PassContext(opt_level=3, 
config={"tir.disable_vectorize": True}):
+        A = tvm.te.placeholder((2,), dtype="int8")
+        B = tvm.te.placeholder((1,), dtype="int8")
+        C = tvm.te.compute(A.shape, lambda i: A[i] + B[0], name="C")
+        sched = tvm.te.create_schedule(C.op)
+        mod = tvm.build(
+            sched,
+            [A, B, C],
+            tvm.target.Target(target, target),
+            runtime=Runtime("crt", {"system-lib": True}),
+            name="add",
+        )
+
+    temp_dir = utils.tempdir()
+    mlf_tar_path = temp_dir.relpath("lib.tar")
+
+    with pytest.raises(RuntimeError) as exc:
+        micro.export_model_library_format([mod, mod], mlf_tar_path)
+
+        assert str(exc.exception) == ("Multiple operator is not supported.")

Review Comment:
   yeah can you add another? it seems like passing duplicate modules is a 
separate error



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