1 files changed, 59 insertions, 0 deletions
diff --git a/gr-blocks/python/blocks/qa_file_sink.py b/gr-blocks/python/blocks/qa_file_sink.py
new file mode 100644
index 0000000000..36d24bb74b
--- /dev/null
+++ b/gr-blocks/python/blocks/qa_file_sink.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# Copyright 2018 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 os
+import tempfile
+import array
+from gnuradio import gr, gr_unittest, blocks
+
+class test_file_sink(gr_unittest.TestCase):
+
+    def setUp (self):
+        os.environ['GR_CONF_CONTROLPORT_ON'] = 'False'
+        self.tb = gr.top_block ()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test_file_sink(self):
+        data = range(1000)
+        expected_result = data
+
+        with tempfile.NamedTemporaryFile() as temp:
+            src = blocks.vector_source_f(data)
+            snk = blocks.file_sink(gr.sizeof_float, temp.name)
+            snk.set_unbuffered(True)
+            self.tb.connect(src, snk)
+            self.tb.run()
+
+            # Check file length (float: 4 * nsamples)
+            file_size = os.stat(temp.name).st_size
+            self.assertEqual(file_size, 4 * len(data))
+
+            # Check file contents
+            datafile = open(temp.name, 'rb')
+            result_data = array.array('f')
+            result_data.fromfile(datafile, len(data))
+            self.assertFloatTuplesAlmostEqual(expected_result, result_data)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_file_sink, "test_file_sink.xml")