code: def test_tuple_match():
      a = relay.Var("a")
      b = relay.Var("b")
      clause = relay.Clause(
          relay.PatternTuple(
              [relay.PatternVar(a), relay.PatternVar(b)]
          ),
          a + b,
      )
      x = relay.Match(
          relay.Tuple([relay.const(1), relay.const(1)]), [clause]
      )
      assert len(unmatched_cases(x)) == 0
  
file_path: tvm/tests/python/relay/test_pass_unmatched_cases.py
imports: import tvm
  from tvm import te
  from tvm import relay
  from tvm.relay.prelude import Prelude
  from tvm.relay.analysis import unmatched_cases
  import pytest
label_desc: Use image node_id 8 for calling a global function with example usage: test_tuple_match() without return types