Add a unit test for testing the rng uclass functionality using the sandbox rng driver.
Signed-off-by: Sughosh Ganu sughosh.ganu@linaro.org --- test/dm/Makefile | 1 + test/dm/rng.c | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) create mode 100644 test/dm/rng.c
diff --git a/test/dm/Makefile b/test/dm/Makefile index 0c2fd5c..f61bf65 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -65,4 +65,5 @@ 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 diff --git a/test/dm/rng.c b/test/dm/rng.c new file mode 100644 index 0000000..879e80a --- /dev/null +++ b/test/dm/rng.c @@ -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 val1 = 0, val2 = 0; + struct udevice *dev; + + ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev)); + ut_assertnonnull(dev); + dm_rng_read(dev, &val1, sizeof(val1)); + dm_rng_read(dev, &val2, sizeof(val2)); + ut_assert(val1 != val2); + + return 0; +} +DM_TEST(dm_test_rng_read, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);