core: QA code to test file metadata sources and sinks.

1 files changed, 118 insertions, 0 deletions

diff --git a/gnuradio-core/src/python/gnuradio/gr/qa_file_metadata.py b/gnuradio-core/src/python/gnuradio/gr/qa_file_metadata.py
new file mode 100644
index 000000000..8ce1f3d5a
--- /dev/null
+++ b/gnuradio-core/src/python/gnuradio/gr/qa_file_metadata.py
@@ -0,0 +1,118 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 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
+from gnuradio import parse_file_metadata
+import pmt
+import os
+
+class test_file_metadata(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_001(self):
+	outfile = "test_out.dat"
+
+        detached = False
+        samp_rate = 200000
+        key = pmt.pmt_intern("samp_rate")
+        val = pmt.pmt_from_double(samp_rate)
+        extras = pmt.pmt_make_dict()
+        extras = pmt.pmt_dict_add(extras, key, val)
+        extras_str = pmt.pmt_serialize_str(extras)
+
+        src = gr.sig_source_c(samp_rate, gr.GR_COS_WAVE, 1000, 1, 0)
+        head = gr.head(gr.sizeof_gr_complex, 1000)
+        fsnk = gr.file_meta_sink(gr.sizeof_gr_complex, outfile,
+                                 samp_rate, 1, 
+                                 gr.GR_FILE_FLOAT, True,
+                                 1000000, extras_str, detached)
+
+	self.tb.connect(src, head, fsnk)
+	self.tb.run()
+        fsnk.close()
+
+        handle = open(outfile, "rb")
+        header_str = handle.read(parse_file_metadata.HEADER_LENGTH)
+        if(len(header_str) == 0):
+            self.assertFalse()
+
+        try:
+            header = pmt.pmt_deserialize_str(header_str)
+        except RuntimeError:
+            self.assertFalse()
+
+        info = parse_file_metadata.parse_header(header, False)
+
+        extra_str = handle.read(info["extra_len"])
+        self.assertGreater(len(extra_str), 0)
+        handle.close()
+
+        try:
+            extra = pmt.pmt_deserialize_str(extra_str)
+        except RuntimeError:
+            self.assertFalse()
+
+        extra_info = parse_file_metadata.parse_extra_dict(extra, info, False)
+
+        self.assertEqual(info['rx_rate'], samp_rate)
+        self.assertEqual(pmt.pmt_to_double(extra_info['samp_rate']), samp_rate)
+
+
+        # Test file metadata source
+        # Create a new sig source to start from the beginning
+        src2 = gr.sig_source_c(samp_rate, gr.GR_COS_WAVE, 1000, 1, 0)
+        fsrc = gr.file_meta_source(outfile, False)
+        vsnk = gr.vector_sink_c()
+        tsnk = gr.tag_debug(gr.sizeof_gr_complex, "QA")
+        ssnk = gr.vector_sink_c()
+        head.reset()
+        self.tb.disconnect(src, head, fsnk)
+        self.tb.connect(fsrc, vsnk)
+        self.tb.connect(fsrc, tsnk)
+        self.tb.connect(src2, head, ssnk)
+        self.tb.run()
+
+        # Test to make sure tags with 'samp_rate' and 'rx_rate' keys
+        # were generated and received correctly.
+        tags = tsnk.current_tags()
+        for t in tags:
+            if(pmt.pmt_eq(t.key, pmt.pmt_intern("samp_rate"))):
+                self.assertEqual(pmt.pmt_to_double(t.value), samp_rate)
+            elif(pmt.pmt_eq(t.key, pmt.pmt_intern("rx_rate"))):
+                self.assertEqual(pmt.pmt_to_double(t.value), samp_rate)
+
+        # Test that the data portion was extracted and received correctly.
+        self.assertComplexTuplesAlmostEqual(vsnk.data(), ssnk.data(), 5)
+
+	os.remove(outfile)
+
+    def est_002(self):
+        fsrc = gr.file_meta_source("/tmp/metadat_file.out", False, True, "/tmp/metadat_file.out.hdr")
+
+
+if __name__ == '__main__':
+    gr_unittest.run(test_file_metadata, "test_file_metadata.xml")