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Simple PCIe FMC carrier SPEC
Commit 59adb80d authored by Federico Vaga's avatar Federico Vaga
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tst: add test for zero size buffers 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 239dde56
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pytest/test_dma.py
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......@@ -24,6 +24,21 @@ class TestDma(object):
spec_c.dma_start()
spec.dma_stop()
def test_dma_no_buffer(self, spec):
"""
The DMA engine should not return an error on a 0 length DMA
transfer. Instead, it returns 0 byte transfered.
"""
spec.dma_start()
data = spec.dma_read(0, 0)
spec.dma_stop()
assert len(data) == 0
spec.dma_start()
count = spec.dma_write(0, b"")
spec.dma_stop()
assert count == 0
@pytest.mark.parametrize("buffer_size",
[2**i for i in range(3, 22)])
def test_dma_read(self, spec, buffer_size):
......
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