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test: rng: Add basic test for random number generator(rng) uclass

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Add a unit test for testing the rng uclass functionality using the
sandbox rng driver.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Sughosh Ganu 2019-12-28 23:58:33 +05:30 • committed by Heinrich Schuchardt
parent 23b3f3c0fc
commit 4ee08eb115
2 changed files with 27 additions and 0 deletions
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1
test/dm/Makefile
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@ -68,4 +68,5 @@ obj-$(CONFIG_VIRTIO_SANDBOX) += virtio.o
obj-$(CONFIG_DMA) += dma.o
obj-$(CONFIG_DM_MDIO) += mdio.o
obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o
obj-$(CONFIG_DM_RNG) += rng.o
endif

26
test/dm/rng.c Normal file
View file

@ -0,0 +1,26 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2019, Linaro Limited
*/
#include <common.h>
#include <dm.h>
#include <rng.h>
#include <dm/test.h>
#include <test/ut.h>
/* Basic test of the rng uclass */
static int dm_test_rng_read(struct unit_test_state *uts)
{
unsigned long rand1 = 0, rand2 = 0;
struct udevice *dev;
ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev));
ut_assertnonnull(dev);
ut_assertok(dm_rng_read(dev, &rand1, sizeof(rand1)));
ut_assertok(dm_rng_read(dev, &rand2, sizeof(rand2)));
ut_assert(rand1 != rand2);
return 0;
}
DM_TEST(dm_test_rng_read, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);