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[libvirt] [PATCH] tests: mock virRandomBits to make it endian stable



virRandomBits is implemented in terms of virRandomBytes. Although we
mock virRandomBytes to give a stable value, this is not sufficient to
make virRandomBits give a stable value. The result of virRandomBits will
vary depending on endianness. Thus we mock virRandomBits to return a
stable value directly.

Signed-off-by: Daniel P. Berrangé <berrange redhat com>
---
 tests/virrandommock.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/virrandommock.c b/tests/virrandommock.c
index 99a55a576a..3079b8bacb 100644
--- a/tests/virrandommock.c
+++ b/tests/virrandommock.c
@@ -44,6 +44,14 @@ virRandomBytes(unsigned char *buf,
     return 0;
 }
 
+uint64_t virRandomBits(int nbits)
+{
+    /* Chosen by a fair roll of a 2^64 sided dice */
+    uint64_t ret = 0x0706050403020100;
+    if (nbits < 64)
+        ret &= ((1ULL << nbits) - 1);
+    return ret;
+}
 
 int virRandomGenerateWWN(char **wwn,
                          const char *virt_type ATTRIBUTE_UNUSED)
-- 
2.17.1


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