#!/usr/bin/env python

from gnuradio import gr, gr_unittest, blocks
import gnuradio.dab as grdab

class qa_select_vectors(gr_unittest.TestCase):
	"""
	@brief QA for the vector select block

	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_select_vectors(self):
		skip = 2
		len  = 3
		vlen = 2
		src_data        = (0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7,8,9)
		trig            = (0,  1,  0,  0,  0,   0,    0,    0,   1,  1,  0,  0,  0)
		expected_data   = (6,7,8,9,10,11,6,7,8,9)
		expected_trig   = (1,  0,   0,   1,  0)
		src = blocks.vector_source_b(src_data)
		trigsrc = blocks.vector_source_b(trig)
		s2v = blocks.stream_to_vector(gr.sizeof_char, 2)
		select_vectors = grdab.select_vectors(gr.sizeof_char,vlen,len,skip)
		v2s = blocks.vector_to_stream(gr.sizeof_char, 2)
		dst = blocks.vector_sink_b()
		trigdst = blocks.vector_sink_b()
		self.tb.connect(src, s2v, select_vectors, v2s, dst)
		self.tb.connect(trigsrc, (select_vectors,1), trigdst)
		self.tb.run()
		result_data = dst.data()
		result_trig = trigdst.data()
		# print expected_result
		# print result_data
		self.assertEqual(expected_data, result_data)
		self.assertEqual(expected_trig, result_trig)
	
	def test_002_select_vectors(self):
		skip = 2
		len  = 3
		vlen = 2
		src_data        = (0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7,8,9)
		trig            = (0,  1,  0,  0,  0,   0,    0,    0,   1,  1,  0,  0,  0)
		expected_data   = (6,7,8,9,10,11,6,7,8,9)
		expected_trig   = (1,  0,   0,   1,  0)
		src = blocks.vector_source_f(src_data)
		trigsrc = blocks.vector_source_b(trig)
		s2v = blocks.stream_to_vector(gr.sizeof_float, 2)
		select_vectors = grdab.select_vectors(gr.sizeof_float,vlen,len,skip)
		v2s = blocks.vector_to_stream(gr.sizeof_float, 2)
		dst = blocks.vector_sink_f()
		trigdst = blocks.vector_sink_b()
		self.tb.connect(src, s2v, select_vectors, v2s, dst)
		self.tb.connect(trigsrc, (select_vectors,1), trigdst)
		self.tb.run()
		result_data = dst.data()
		result_trig = trigdst.data()
		# print expected_result
		# print result_data
		self.assertFloatTuplesAlmostEqual(expected_data, result_data)
		self.assertEqual(expected_trig, result_trig)

if __name__ == '__main__':
	gr_unittest.main()