[PATCH v3 7/8] test: rng: Add basic test for random number generator(rng) uclass

Sughosh Ganu
2019-12-13T07:14:26Z

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>
---
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);
--
2.7.4