[Test] Add exp_cycle calculation test to channelwise test

tests/fpgadataflow/test_fpgadataflow_channelwise_ops.py

@@ -46,6 +46,8 @@ from finn.util.basic import gen_finn_dt_tensor
 from finn.transformation.fpgadataflow.replace_verilog_relpaths import (
     ReplaceVerilogRelPaths,
 )
+from finn.custom_op.registry import getCustomOp
+from finn.analysis.fpgadataflow.exp_cycles_per_layer import exp_cycles_per_layer
 
 
 def make_modelwrapper(C, pe, idt, odt, pdt, func, vecs):
@@ -154,3 +156,9 @@ def test_fpgadataflow_channelwise_ops(idt, act, pdt, nf, ich, func, vecs, exec_m
     if exec_mode == "rtlsim":
         hls_synt_res_est = model.analysis(hls_synth_res_estimation)
         assert "ChannelwiseOp_Batch_0" in hls_synt_res_est
+
+        inst = getCustomOp(model.graph.node[0])
+        sim_cycles = inst.get_nodeattr("sim_cycles")
+        exp_cycles_dict = model.analysis(exp_cycles_per_layer)
+        exp_cycles = exp_cycles_dict[str(model.graph.node[0])]
+        assert np.isclose(exp_cycles, sim_cycles, atol=10)