1 files changed, 153 insertions, 0 deletions
diff --git a/gr-blocks/python/blocks/qa_file_source.py b/gr-blocks/python/blocks/qa_file_source.py
new file mode 100644
index 0000000000..3829386e30
--- /dev/null
+++ b/gr-blocks/python/blocks/qa_file_source.py
@@ -0,0 +1,153 @@
+#!/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
+import pmt
+from gnuradio import gr, gr_unittest, blocks
+
+class test_file_source(gr_unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        os.environ['GR_CONF_CONTROLPORT_ON'] = 'False'
+        cls._datafile = tempfile.NamedTemporaryFile()
+        cls._datafilename = cls._datafile.name
+        cls._vector = [x for x in range(1000)]
+        with open(cls._datafilename, 'wb') as f:
+            array.array('f', cls._vector).tofile(f)
+
+    @classmethod
+    def tearDownClass(cls):
+        del cls._vector
+        del cls._datafilename
+        del cls._datafile
+
+    def setUp (self):
+        self.tb = gr.top_block()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test_file_source(self):
+        src = blocks.file_source(gr.sizeof_float, self._datafilename)
+        snk = blocks.vector_sink_f()
+        self.tb.connect(src, snk)
+        self.tb.run()
+
+        result_data = snk.data()
+        self.assertFloatTuplesAlmostEqual(self._vector, result_data)
+        self.assertEqual(len(snk.tags()), 0)
+
+    def test_file_source_no_such_file(self):
+        """
+        Try to open a non-existant file and verify exception is thrown.
+        """
+        try:
+            _ = blocks.file_source(gr.sizeof_float, "___no_such_file___")
+            self.assertTrue(False)
+        except RuntimeError:
+            self.assertTrue(True)
+
+    def test_file_source_with_offset(self):
+        expected_result = self._vector[100:]
+
+        src = blocks.file_source(gr.sizeof_float, self._datafilename, offset=100)
+        snk = blocks.vector_sink_f()
+
+        self.tb.connect(src, snk)
+        self.tb.run()
+
+        result_data = snk.data()
+        self.assertFloatTuplesAlmostEqual(expected_result, result_data)
+        self.assertEqual(len(snk.tags()), 0)
+
+    def test_source_with_offset_and_len(self):
+        expected_result = self._vector[100:100+600]
+
+        src = blocks.file_source(gr.sizeof_float, self._datafilename, offset=100, len=600)
+        snk = blocks.vector_sink_f()
+        self.tb.connect(src, snk)
+        self.tb.run()
+
+        result_data = snk.data()
+        self.assertFloatTuplesAlmostEqual(expected_result, result_data)
+        self.assertEqual(len(snk.tags()), 0)
+
+    def test_file_source_can_seek_after_open(self):
+
+        src = blocks.file_source(gr.sizeof_float, self._datafilename)
+        self.assertTrue(src.seek(0, os.SEEK_SET))
+        self.assertTrue(src.seek(len(self._vector)-1, os.SEEK_SET))
+        # Seek past end of file - this will also log a warning
+        self.assertFalse(src.seek(len(self._vector), os.SEEK_SET))
+        # Negative seek - this will also log a warning
+        self.assertFalse(src.seek(-1, os.SEEK_SET))
+
+        self.assertTrue(src.seek(1, os.SEEK_END))
+        self.assertTrue(src.seek(len(self._vector), os.SEEK_END))
+        # Seek past end of file - this will also log a warning
+        self.assertFalse(src.seek(0, os.SEEK_END))
+
+        self.assertTrue(src.seek(0, os.SEEK_SET))
+        self.assertTrue(src.seek(1, os.SEEK_CUR))
+        # Seek past end of file - this will also log a warning
+        self.assertFalse(src.seek(len(self._vector), os.SEEK_CUR))
+
+
+    def test_begin_tag(self):
+        expected_result = self._vector
+
+        src = blocks.file_source(gr.sizeof_float, self._datafilename)
+        src.set_begin_tag(pmt.string_to_symbol("file_begin"))
+        snk = blocks.vector_sink_f()
+        self.tb.connect(src, snk)
+        self.tb.run()
+
+        result_data = snk.data()
+        self.assertFloatTuplesAlmostEqual(expected_result, result_data)
+        self.assertEqual(len(snk.tags()), 1)
+
+    def test_begin_tag_repeat(self):
+        expected_result = self._vector + self._vector
+
+        src = blocks.file_source(gr.sizeof_float, self._datafilename, True)
+        src.set_begin_tag(pmt.string_to_symbol("file_begin"))
+        head = blocks.head(gr.sizeof_float, 2 * len(self._vector))
+        snk = blocks.vector_sink_f()
+        self.tb.connect(src, head, snk)
+        self.tb.run()
+
+        result_data = snk.data()
+        self.assertFloatTuplesAlmostEqual(expected_result, result_data)
+        tags = snk.tags()
+        self.assertEqual(len(tags), 2)
+        self.assertEqual(str(tags[0].key), "file_begin")
+        self.assertEqual(str(tags[0].value), "0")
+        self.assertEqual(tags[0].offset, 0)
+        self.assertEqual(str(tags[1].key), "file_begin")
+        self.assertEqual(str(tags[1].value), "1")
+        self.assertEqual(tags[1].offset, 1000)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_file_source, "test_file_source.xml")