tst: do twice the DMA read and compare

We can see if the controller returns random garbage Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

tst: do twice the DMA read and compare
We can see if the controller returns random garbage Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
fe1b5c53 · Federico Vaga · 83be3241 · fe1b5c53
Commit fe1b5c53 authored Jun 26, 2020 by Federico Vaga
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Showing with 6 additions and 2 deletions

test_dma.py pytest/test_dma.py +6 -2

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--- a/pytest/test_dma.py
+++ b/pytest/test_dma.py
@@ -40,10 +40,14 @@ class TestDma(object):
        - 1, 2, 3, 4: performing transfers of these sizes led to a failure
        """
        spec.dma_start()
-        data = spec.dma_read(dma_size)
-        assert len(data) == dma_size
+        data1 = spec.dma_read(0, dma_size)
+        assert len(data1) == dma_size
+        data2 = spec.dma_read(0, dma_size)
+        assert len(data2) == dma_size
        spec.dma_stop()

+        assert data1 == data2
+
    @pytest.mark.parametrize("dma_size",
                             [0, 1, 2, 3] + \
                             [5, 7, 9] + \