1 files changed, 81 insertions, 0 deletions
diff --git a/gr-digital/python/digital/qa_constellation_encoder_bc.py b/gr-digital/python/digital/qa_constellation_encoder_bc.py
new file mode 100644
index 0000000000..2c6d587dac
--- /dev/null
+++ b/gr-digital/python/digital/qa_constellation_encoder_bc.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+#
+# Copyright 2004,2007,2010-2013,2020 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+#
+
+
+from gnuradio import gr, gr_unittest, digital, blocks
+import numpy as np
+
+class test_constellation_encoder(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_constellation_encoder_bc_bpsk(self):
+        cnst = digital.constellation_bpsk()
+
+        src_data = (1,           1,           0,            0,
+                    1,           0,           1)
+        const_map = [-1.0, 1.0]
+        expected_result = [const_map[x] for x in src_data]
+
+        src = blocks.vector_source_b(src_data)
+        op = digital.constellation_encoder_bc(cnst.base())
+        dst = blocks.vector_sink_c()
+
+        self.tb.connect(src, op)
+        self.tb.connect(op, dst)
+        self.tb.run()               # run the graph and wait for it to finish
+
+        actual_result = dst.data()  # fetch the contents of the sink
+        # print "actual result", actual_result
+        # print "expected result", expected_result
+        self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
+
+    def test_constellation_encoder_bc_qpsk(self):
+        cnst = digital.constellation_qpsk()
+        src_data = (3,           1,           0,            2,
+                    3,           2,           1)
+        expected_result = [cnst.points()[x] for x in src_data]
+        src = blocks.vector_source_b(src_data)
+        op = digital.constellation_encoder_bc(cnst.base())
+        dst = blocks.vector_sink_c()
+
+        self.tb.connect(src, op)
+        self.tb.connect(op, dst)
+        self.tb.run()               # run the graph and wait for it to finish
+
+        actual_result = dst.data()  # fetch the contents of the sink
+        # print "actual result", actual_result
+        # print "expected result", expected_result
+        self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
+
+
+    def test_constellation_encoder_bc_qpsk_random(self):
+        cnst = digital.constellation_qpsk()
+        src_data = np.random.randint(0, 4, size=20000)
+        expected_result = [cnst.points()[x] for x in src_data]
+        src = blocks.vector_source_b(src_data)
+        op = digital.constellation_encoder_bc(cnst.base())
+        dst = blocks.vector_sink_c()
+
+        self.tb.connect(src, op)
+        self.tb.connect(op, dst)
+        self.tb.run()               # run the graph and wait for it to finish
+
+        actual_result = dst.data()  # fetch the contents of the sink
+        # print "actual result", actual_result
+        # print "expected result", expected_result
+        self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_constellation_encoder)