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#!/usr/bin/env python
from gnuradio import gr, gr_unittest
from gnuradio import blocks
import gnuradio.dab as grdab
class qa_measure_ber_b(gr_unittest.TestCase):
"""
@brief QA for bit error rate measure sink.
This class implements a test bench to verify the corresponding C++ class.
"""
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001_measure_ber_b(self):
src0 = blocks.vector_source_b(range(0,256))
src1 = blocks.vector_source_b(range(0,256))
sink = grdab.measure_ber_b()
self.tb.connect(src0, (sink,0))
self.tb.connect(src1, (sink,1))
self.tb.run()
assert(sink.ber()==0)
def test_001_measure_ber_b(self):
src0 = blocks.vector_source_b([0]*100)
src1 = blocks.vector_source_b([255]*100)
sink = grdab.measure_ber_b()
self.tb.connect(src0, (sink,0))
self.tb.connect(src1, (sink,1))
self.tb.run()
assert(sink.ber()==1)
def test_002_measure_ber_b(self):
src0 = blocks.vector_source_b(range(0,256)*2)
src1 = blocks.vector_source_b([0]*256+[255]*256)
sink = grdab.measure_ber_b()
self.tb.connect(src0, (sink,0))
self.tb.connect(src1, (sink,1))
self.tb.run()
self.assertAlmostEqual(sink.ber(), 0.5) # every bit is set 50% of the time
def test_003_measure_ber_b(self):
src0 = blocks.vector_source_b([0,7,255,250])
src1 = blocks.vector_source_b([0,2,255,3])
sink = grdab.measure_ber_b()
self.tb.connect(src0, (sink,0))
self.tb.connect(src1, (sink,1))
self.tb.run()
self.assertAlmostEqual(sink.ber(), 8./32.) # every bit is set 50% of the time
if __name__ == '__main__':
gr_unittest.main()
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