Add base case testing scenario

resolves #12

Author: qhaoxu

tests/test_fdmt.py

@@ -0,0 +1,15 @@
+'''test'''
+
+import numpy as np
+from fdmt.cpu_fdmt import FDMT
+
+def test_fdmt():
+    # Random data with 1024 frequency channels and 
+    # 40960 time samples
+    data = np.random.normal(size=(1024, 40960))
+    fdmt = FDMT()  # outputting 2048 time series, the default
+
+    # code call
+    time_dt_series = fdmt.fdmt(data, retDMT=True)
+
+    # Done. time_dt_series is an array of 2048 dedispersed time series.