--- a
+++ b/python/tests/test_util.py
@@ -0,0 +1,29 @@
+# -*- encoding: utf-8 -*-
+
+from emokit.tasks import EmotivWriterTask
+from emokit.util import values_header, writer_task_to_line
+
+# timestamp + 2 * 14 eeg + 3 gyro = 32
+LINE_LENGTH = 32
+
+def _create_EmotivWriterTask():
+    data = {}
+    item = {"value": 1, "quality": 1}
+    header = set([head.split(" ")[0] for head in values_header.split(",")])
+    for head in header:
+        data[head] = item
+    timestamp = "2016-12-20 14:10:49.846000"
+    next_task = EmotivWriterTask(data, timestamp=timestamp)
+    return next_task
+
+def test_write_task_to_line():
+    next_task = _create_EmotivWriterTask()
+    line = writer_task_to_line(next_task)
+    values = line.split(",")
+
+    assert(len(values) == LINE_LENGTH)
+
+def test_fields():
+    header = values_header.split(",")
+
+    assert(len(header) == LINE_LENGTH)