Testbench cleanup for cocotb 2.0

Signed-off-by: Alex Forencich <alex@alexforencich.com>

src/lfsr/tb/taxi_lfsr/test_taxi_lfsr.py

@@ -149,7 +149,7 @@ async def run_test_prbs(dut, ref_prbs):
         await Timer(10, 'ns')
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     if cocotb.top.LFSR_POLY.value == 0x4c11db7:
         factory = TestFactory(run_test_crc)

src/lfsr/tb/taxi_lfsr_crc/test_taxi_lfsr_crc.py

@@ -112,7 +112,7 @@ async def run_test_crc(dut, ref_crc):
     await RisingEdge(dut.clk)
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     if int(cocotb.top.LFSR_POLY.value) == 0x4c11db7:
         factory = TestFactory(run_test_crc)

src/lfsr/tb/taxi_lfsr_descramble/test_taxi_lfsr_descramble.py

@@ -145,7 +145,7 @@ async def run_test_descramble(dut, ref_scramble, ref_descramble):
     await RisingEdge(dut.clk)
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     # if cocotb.top.LFSR_POLY.value == 0x8000000001:
     if int(cocotb.top.LFSR_W.value) == 58:

src/lfsr/tb/taxi_lfsr_prbs_check/test_taxi_lfsr_prbs_check.py

@@ -146,7 +146,7 @@ async def run_test_prbs(dut, ref_prbs):
     assert err_cnt == 3
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     if int(cocotb.top.LFSR_POLY.value) == 0x021:
         factory = TestFactory(run_test_prbs)

src/lfsr/tb/taxi_lfsr_prbs_gen/test_taxi_lfsr_prbs_gen.py

@@ -150,7 +150,7 @@ async def run_test_scramble(dut, ref_scramble):
         await RisingEdge(dut.clk)
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     if int(cocotb.top.LFSR_POLY.value) == 0x021:
         factory = TestFactory(run_test_prbs)

src/lfsr/tb/taxi_lfsr_scramble/test_taxi_lfsr_scramble.py

@@ -128,7 +128,7 @@ async def run_test_scramble(dut, ref_scramble):
     await RisingEdge(dut.clk)
 
 
-if cocotb.SIM_NAME:
+if getattr(cocotb, 'top', None) is not None:
 
     # if cocotb.top.LFSR_POLY.value == 0x8000000001:
     if int(cocotb.top.LFSR_W.value) == 58: