FFT_tools: add docstring to TestRFFT.test_rfft

diff --git a/FFT_tools.py b/FFT_tools.py
index abdc75f455542f7c14f84f7ce2de2dcc4aa4b806..9a6041ae70c9776331f03508beaee9b11a881cdd 100644 (file)
--- a/FFT_tools.py
+++ b/FFT_tools.py
@@ -382,6 +382,7 @@ class TestRFFT (_unittest.TestCase):
                 timeSum, n, freqSum))
 
     def test_rfft(self):
+        "Test NumPy's builtin :func:`numpy.fft.rfft`"
         xs = [1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1]
         self.run_rfft(xs, _numpy.fft.rfft(xs))