1 files changed, 79 insertions, 0 deletions
diff --git a/gr-blocks/python/blocks/qa_block_behavior.py b/gr-blocks/python/blocks/qa_block_behavior.py
new file mode 100644
index 0000000000..a21e423b21
--- /dev/null
+++ b/gr-blocks/python/blocks/qa_block_behavior.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 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, blocks
+
+class test_block_behavior(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_000(self):
+        '''
+        Tests the max noutput sizes set by the scheduler. When creating
+        the block, there is no block_detail and so the max buffer size
+        is 0. When the top_block is run, it builds the detail and
+        buffers and sets the max value. test_0001 tests when the
+        max_noutput_items is set by hand.
+
+        '''
+
+        src = blocks.null_source(gr.sizeof_float)
+        op  = blocks.head(gr.sizeof_float, 100)
+        snk = blocks.null_sink(gr.sizeof_float)
+
+        maxn_pre = op.max_noutput_items()
+
+        self.tb.connect(src, op, snk)
+        self.tb.run()
+
+        maxn_post = op.max_noutput_items()
+
+        self.assertEqual(maxn_pre, 0)
+        self.assertEqual(maxn_post, 16384)
+
+    def test_001(self):
+        '''
+        Tests the max noutput size when being explicitly set.
+        '''
+
+        src = blocks.null_source(gr.sizeof_float)
+        op  = blocks.head(gr.sizeof_float, 100)
+        snk = blocks.null_sink(gr.sizeof_float)
+
+        op.set_max_noutput_items(1024)
+
+        maxn_pre = op.max_noutput_items()
+
+        self.tb.connect(src, op, snk)
+        self.tb.run()
+
+        maxn_post = op.max_noutput_items()
+
+        self.assertEqual(maxn_pre, 1024)
+        self.assertEqual(maxn_post, 1024)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_block_behavior, "test_block_behavior.xml")