1 files changed, 67 insertions, 0 deletions
diff --git a/gr-blocks/python/qa_stretch.py b/gr-blocks/python/qa_stretch.py
new file mode 100755
index 000000000..013d878a8
--- /dev/null
+++ b/gr-blocks/python/qa_stretch.py
@@ -0,0 +1,67 @@
+#!/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.
+#
+
+from gnuradio import gr, gr_unittest
+import blocks_swig as blocks
+
+class test_stretch(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_stretch_01(self):
+        tb = self.tb
+
+        data = 10*[1,]
+        data0 = map(lambda x: x/20.0, data)
+        data1 = map(lambda x: x/10.0, data)
+
+        expected_result0 = 10*[0.05,]
+        expected_result1 = 10*[0.1,]
+
+        src0 = gr.vector_source_f(data0, False)
+        src1 = gr.vector_source_f(data1, False)
+        inter = gr.streams_to_vector(gr.sizeof_float, 2)
+        op = blocks.stretch_ff(0.1, 2)
+        deinter = gr.vector_to_streams(gr.sizeof_float, 2)
+        dst0 = gr.vector_sink_f()
+        dst1 = gr.vector_sink_f()
+        
+        tb.connect(src0, (inter,0))
+        tb.connect(src1, (inter,1))
+        tb.connect(inter, op)
+        tb.connect(op, deinter)
+        tb.connect((deinter,0), dst0)
+        tb.connect((deinter,1), dst1)
+        tb.run()
+
+        dst0_data = dst0.data()
+        dst1_data = dst1.data()
+
+        self.assertFloatTuplesAlmostEqual(expected_result0, dst0_data, 4)
+        self.assertFloatTuplesAlmostEqual(expected_result1, dst1_data, 4)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_stretch, "test_stretch.xml")