def test_crc_equal(self):
data = (0, 1, 2, 3, 4, 5, 6, 7, 8)
tag_name = "len"
tag = gr.gr_tag_t()
tag.offset = 0
tag.key = pmt.pmt_string_to_symbol(tag_name)
tag.value = pmt.pmt_from_long(len(data))
src = gr.vector_source_b(data, (tag,), False, 1)
mtu = 64
crc = ofdm.crc32_bb(False, mtu, tag_name)
crc_check = ofdm.crc32_bb(True, mtu, tag_name)
sink = gr.vector_sink_b()
sink2 = gr.vector_sink_b()
self.tb.connect(src, crc, crc_check, sink)
self.tb.run()
# Check that the packets after crc_check are the same as input.
self.assertEqual(data, sink.data())
def test_crc_correct_lentag(self):
tag_name = "length"
packets = ((0, 1, 2, 3, 4, 5, 6, 7, 8), (0, 1, 2, 3, 4, 5, 6, 7, 8))
data, tags = ofdm.utils.packets_to_vectors(packets, tag_name)
src = gr.vector_source_b(data, tags, False, 1)
mtu = 64
crc = ofdm.crc32_bb(False, mtu, tag_name)
sink = gr.vector_sink_b()
self.tb.connect(src, crc, sink)
self.tb.run()
new_packets = ofdm.utils.vectors_to_packets(sink.data(), sink.tags(), tag_name)
self.assertEqual(len(new_packets), len(packets))
def test_crc_len(self):
data = range(16)
tag_name = "len"
tag = gr.gr_tag_t()
tag.offset = 0
tag.key = pmt.pmt_string_to_symbol(tag_name)
tag.value = pmt.pmt_from_long(len(data))
src = gr.vector_source_b(data, (tag,), False, 1)
mtu = 64
crc = ofdm.crc32_bb(False, mtu, tag_name)
sink = gr.vector_sink_b()
self.tb.connect(src, crc, sink)
self.tb.run()
# Check that the packets before crc_check are 4 bytes longer that the input.
self.assertEqual(len(data) + 4, len(sink.data()))
