Not mocking this function results in files being created in the user's home directory when running the test and in the build failing altogether inside a constrained environment such as the one used by pbuilder: Could not initialize HostdevManager - operation failed: Failed to create state dir '/nonexistent/.cache/libvirt/hostdevmgr' Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- tests/qemuhotplugmock.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tests/qemuhotplugmock.c b/tests/qemuhotplugmock.c index d2324913cf..27c81670a3 100644 --- a/tests/qemuhotplugmock.c +++ b/tests/qemuhotplugmock.c @@ -27,6 +27,7 @@ static int (*real_virGetDeviceID)(const char *path, int *maj, int *min); static bool (*real_virFileExists)(const char *path); +static char *(*real_virGetUserRuntimeDirectory)(void); static void init_syms(void) @@ -36,6 +37,7 @@ init_syms(void) VIR_MOCK_REAL_INIT(virGetDeviceID); VIR_MOCK_REAL_INIT(virFileExists); + VIR_MOCK_REAL_INIT(virGetUserRuntimeDirectory); } unsigned long long @@ -106,3 +108,10 @@ void qemuProcessKillManagedPRDaemon(virDomainObjPtr vm G_GNUC_UNUSED) { } + +char * +virGetUserRuntimeDirectory(void) +{ + return g_build_filename(g_getenv("LIBVIRT_FAKE_ROOT_DIR"), + "user-runtime-directory", NULL); +}