1 files changed, 126 insertions, 0 deletions
diff --git a/gr-blocks/python/blocks/qa_repack_bits_bb.py b/gr-blocks/python/blocks/qa_repack_bits_bb.py
new file mode 100755
index 0000000000..d9bbfe4fac
--- /dev/null
+++ b/gr-blocks/python/blocks/qa_repack_bits_bb.py
@@ -0,0 +1,126 @@
+#!/usr/bin/env python
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+import random
+from gnuradio import gr, gr_unittest, blocks
+import pmt
+
+class qa_repack_bits_bb (gr_unittest.TestCase):
+
+    def setUp (self):
+        self.tb = gr.top_block ()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test_001_simple (self):
+        """ Very simple test, 2 bits -> 1 """
+        src_data = (0b11, 0b01, 0b10)
+        expected_data = (0b1, 0b1, 0b1, 0b0, 0b0, 0b1)
+        k = 2
+        l = 1
+        src = blocks.vector_source_b(src_data, False, 1)
+        repack = blocks.repack_bits_bb(k, l)
+        sink = blocks.vector_sink_b()
+        self.tb.connect(src, repack, sink)
+        self.tb.run ()
+        self.assertEqual(sink.data(), expected_data)
+
+    def test_002_three (self):
+        """ 8 -> 3 """
+        src_data = (0b11111101, 0b11111111, 0b11111111)
+        expected_data = (0b101,) + (0b111,) * 7
+        k = 8
+        l = 3
+        src = blocks.vector_source_b(src_data, False, 1)
+        repack = blocks.repack_bits_bb(k, l)
+        sink = blocks.vector_sink_b()
+        self.tb.connect(src, repack, sink)
+        self.tb.run ()
+        self.assertEqual(sink.data(), expected_data)
+
+    def test_003_lots_of_bytes (self):
+        """ Lots and lots of bytes, multiple packer stages """
+        src_data = tuple([random.randint(0, 255) for x in range(3*5*7*8 * 10)])
+        src = blocks.vector_source_b(src_data, False, 1)
+        repack1 = blocks.repack_bits_bb(8, 3)
+        repack2 = blocks.repack_bits_bb(3, 5)
+        repack3 = blocks.repack_bits_bb(5, 7)
+        repack4 = blocks.repack_bits_bb(7, 8)
+        sink = blocks.vector_sink_b()
+        self.tb.connect(src, repack1, repack2, repack3, repack4, sink)
+        self.tb.run ()
+        self.assertEqual(sink.data(), src_data)
+
+    def test_004_three_with_tags (self):
+        """ 8 -> 3 """
+        src_data = (0b11111101, 0b11111111)
+        expected_data = (0b101,) + (0b111,) * 4 + (0b001,)
+        k = 8
+        l = 3
+        tag_name = "len"
+        tag = gr.tag_t()
+        tag.offset = 0
+        tag.key = pmt.string_to_symbol(tag_name)
+        tag.value = pmt.from_long(len(src_data))
+        src = blocks.vector_source_b(src_data, False, 1, (tag,))
+        repack = blocks.repack_bits_bb(k, l, tag_name)
+        sink = blocks.vector_sink_b()
+        self.tb.connect(src, repack, sink)
+        self.tb.run ()
+        self.assertEqual(sink.data(), expected_data)
+        try:
+            out_tag = sink.tags()[0]
+        except:
+            self.assertFail()
+        self.assertEqual(out_tag.offset, 0)
+        self.assertEqual(pmt.symbol_to_string(out_tag.key), tag_name)
+        self.assertEqual(pmt.to_long(out_tag.value), len(expected_data))
+
+    def test_005_three_with_tags_trailing (self):
+        """ 3 -> 8, trailing bits """
+        src_data = (0b101,) + (0b111,) * 4 + (0b001,)
+        expected_data = (0b11111101, 0b11111111)
+        k = 3
+        l = 8
+        tag_name = "len"
+        tag = gr.tag_t()
+        tag.offset = 0
+        tag.key = pmt.string_to_symbol(tag_name)
+        tag.value = pmt.from_long(len(src_data))
+        src = blocks.vector_source_b(src_data, False, 1, (tag,))
+        repack = blocks.repack_bits_bb(k, l, tag_name, True)
+        sink = blocks.vector_sink_b()
+        self.tb.connect(src, repack, sink)
+        self.tb.run ()
+        self.assertEqual(sink.data(), expected_data)
+        try:
+            out_tag = sink.tags()[0]
+        except:
+            self.assertFail()
+        self.assertEqual(out_tag.offset, 0)
+        self.assertEqual(pmt.symbol_to_string(out_tag.key), tag_name)
+        self.assertEqual(pmt.to_long(out_tag.value), len(expected_data))
+
+if __name__ == '__main__':
+    gr_unittest.run(qa_repack_bits_bb, "qa_repack_bits_bb.xml")
+