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tests/qtest/npcm7xx_rng-test: dump random data on failure

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Dump the collected random data after a randomness test failure.

Note that this relies on the test having called
g_test_set_nonfatal_assertions() so we don't abort immediately on the
assertion failure.

Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: minor commit message tweak]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Havard Skinnemoen 2020-11-02 17:14:57 -08:00 committed by Peter Maydell
parent ce3adffc3c
commit 1af979b492
1 changed files with 12 additions and 0 deletions
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12
tests/qtest/npcm7xx_rng-test.c
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@ -20,6 +20,7 @@
#include "libqtest-single.h" #include "libqtest-single.h"
#include "qemu/bitops.h" #include "qemu/bitops.h"
#include "qemu-common.h"
#define RNG_BASE_ADDR 0xf000b000 #define RNG_BASE_ADDR 0xf000b000
@ -36,6 +37,13 @@
/* Number of bits to collect for randomness tests. */ /* Number of bits to collect for randomness tests. */
#define TEST_INPUT_BITS (128) #define TEST_INPUT_BITS (128)
static void dump_buf_if_failed(const uint8_t *buf, size_t size)
{
if (g_test_failed()) {
qemu_hexdump(stderr, "", buf, size);
}
}
static void rng_writeb(unsigned int offset, uint8_t value) static void rng_writeb(unsigned int offset, uint8_t value)
{ {
writeb(RNG_BASE_ADDR + offset, value); writeb(RNG_BASE_ADDR + offset, value);
@ -188,6 +196,7 @@ static void test_continuous_monobit(void)
} }
g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01); g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01);
dump_buf_if_failed(buf, sizeof(buf));
} }
/* /*
@ -209,6 +218,7 @@ static void test_continuous_runs(void)
} }
g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01); g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01);
dump_buf_if_failed(buf.c, sizeof(buf));
} }
/* /*
@ -230,6 +240,7 @@ static void test_first_byte_monobit(void)
} }
g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01); g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01);
dump_buf_if_failed(buf, sizeof(buf));
} }
/* /*
@ -254,6 +265,7 @@ static void test_first_byte_runs(void)
} }
g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01); g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01);
dump_buf_if_failed(buf.c, sizeof(buf));
} }
int main(int argc, char **argv) int main(int argc, char **argv)