Output matmul_1 =
      ops::MatMul(scope.WithOpName("matmul_1"), matmul_input, matmul_input);

  AddCtrlEdge(scope, increment_op, group_deps);
  AddCtrlEdge(scope, weights_0_update_op, increment_op);
  AddCtrlEdge(scope, weights_1_update_op, increment_op);

  AddCtrlEdge(scope, some_ctrl_input, weights_0_update_op);
  AddCtrlEdge(scope, some_ctrl_input, weights_1_update_op);

TEST(TestUtil, DoesntMatchesFailure) {
  ASSERT_THAT(failed(), Not(IsOkOrFiltered()));
}

TEST(TestUtil, MatchesFiltered) { ASSERT_THAT(filtered(), IsOkOrFiltered()); }

TEST(TestUtil, IncrementsOk) {
  CellReader<int64_t> reader(kMetric);
  counter->GetCell(kOkStatus)->IncrementBy(1);

  ASSERT_THAT(success(), IncrementedOrFiltered(reader.Delta(kOkStatus), 1));
}

TEST(TestUtil, FilteredDoesntIncrementsOk) {

                            latch.output_true, increment_by);
  Output next_iteration =
      ops::NextIteration(root.WithOpName(prefix + "/next_iteration"), iv_next);

  CHECK(root.graph()
            ->UpdateEdge(next_iteration.node(), 0, iv.output.node(), 1)
            .ok());
  root.graph()->AddControlEdge(iv.output.node(), increment_by.node());
  root.graph()->AddControlEdge(iv.output.node(), final_value.node());