diff --git a/tests/qemuhotplugtest.c b/tests/qemuhotplugtest.c
index 215837fc8f..429928aa7f 100644
--- a/tests/qemuhotplugtest.c
+++ b/tests/qemuhotplugtest.c
@@ -656,8 +656,6 @@ testQemuHotplugCpuIndividual(const void *opaque)
     return ret;
 }
 
-#define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 
 static int
 mymain(void)
@@ -669,15 +667,10 @@ mymain(void)
     g_autofree char *fakerootdir = NULL;
     g_autoptr(virQEMUDriverConfig) cfg = NULL;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
+    if (!(fakerootdir = virTestFakeRootDirInit())) {
+        return EXIT_FAILURE;
     }
 
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
-
     if (qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
 
@@ -1004,8 +997,7 @@ mymain(void)
     DO_TEST_CPU_INDIVIDUAL("ppc64-modern-individual", "16-22", true, true, true);
     DO_TEST_CPU_INDIVIDUAL("ppc64-modern-individual", "17", true, true, true);
 
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     qemuTestDriverFree(&driver);
     virObjectUnref(data.vm);
diff --git a/tests/qemumemlocktest.c b/tests/qemumemlocktest.c
index b303f70e9d..184d8ede19 100644
--- a/tests/qemumemlocktest.c
+++ b/tests/qemumemlocktest.c
@@ -42,8 +42,6 @@ testCompareMemLock(const void *data)
     return virTestCompareToULL(info->memlock, qemuDomainGetMemLockLimitBytes(def, false));
 }
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
@@ -51,14 +49,8 @@ mymain(void)
     g_autofree char *fakerootdir = NULL;
     g_autoptr(virQEMUCaps) qemuCaps = NULL;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
     if (qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
@@ -137,8 +129,7 @@ mymain(void)
     DO_TEST("pseries-locked+hostdev", VIR_DOMAIN_MEMORY_PARAM_UNLIMITED);
 
  cleanup:
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     qemuTestDriverFree(&driver);
 
diff --git a/tests/qemustatusxml2xmltest.c b/tests/qemustatusxml2xmltest.c
index db82a1a980..a29aa723e6 100644
--- a/tests/qemustatusxml2xmltest.c
+++ b/tests/qemustatusxml2xmltest.c
@@ -70,8 +70,6 @@ testInfoSetStatusPaths(struct testQemuInfo *info)
 }
 
 
-#define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
@@ -87,14 +85,8 @@ mymain(void)
     if (!capslatest)
         return EXIT_FAILURE;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
     if (qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
@@ -142,8 +134,7 @@ mymain(void)
     DO_TEST_STATUS("backup-pull");
 
  cleanup:
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     qemuTestDriverFree(&driver);
 
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 737eacf530..3f5eda533e 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -796,8 +796,6 @@ testInfoSetPaths(struct testQemuInfo *info,
                                       abs_srcdir, info->name, suffix ? suffix : "");
 }
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
@@ -813,14 +811,8 @@ mymain(void)
     if (!capslatest)
         return EXIT_FAILURE;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
     /* Set the timezone because we are mocking the time() function.
      * If we don't do that, then localtime() may return unpredictable
@@ -2995,8 +2987,7 @@ mymain(void)
 
     DO_TEST_CAPS_LATEST("crypto-builtin");
 
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     VIR_FREE(driver.config->nbdTLSx509certdir);
     qemuTestDriverFree(&driver);
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index a3a5fd61e8..2b6006fcc7 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -113,8 +113,6 @@ testInfoSetPaths(struct testQemuInfo *info,
 }
 
 
-#define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
@@ -131,15 +129,8 @@ mymain(void)
     if (!capslatest)
         return EXIT_FAILURE;
 
-
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
     /* Required for tpm-emulator tests
      */
@@ -1334,8 +1325,7 @@ mymain(void)
     DO_TEST_CAPS_LATEST("crypto-builtin");
 
  cleanup:
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     qemuTestDriverFree(&driver);
     virFileWrapperClearPrefixes();
diff --git a/tests/scsihosttest.c b/tests/scsihosttest.c
index 28ad59f39d..37d2b86c0a 100644
--- a/tests/scsihosttest.c
+++ b/tests/scsihosttest.c
@@ -227,8 +227,6 @@ testVirFindSCSIHostByPCI(const void *data G_GNUC_UNUSED)
     return ret;
 }
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
@@ -236,12 +234,8 @@ mymain(void)
     g_autofree char *fakerootdir = NULL;
     g_autofree char *fakesysfsdir = NULL;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        goto cleanup;
-    }
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
     fakesysfsdir = g_strdup_printf("%s/sys", fakerootdir);
 
@@ -268,8 +262,7 @@ mymain(void)
     ret = 0;
 
  cleanup:
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
     VIR_FREE(scsihost_class_path);
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }
diff --git a/tests/vircgrouptest.c b/tests/vircgrouptest.c
index 848a9c7bb0..0e7645af7a 100644
--- a/tests/vircgrouptest.c
+++ b/tests/vircgrouptest.c
@@ -956,22 +956,14 @@ static int testCgroupGetBlkioIoDeviceServiced(const void *args G_GNUC_UNUSED)
     return 0;
 }
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static char *
 initFakeFS(const char *mode,
            const char *filename)
 {
     char *fakerootdir;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
+    if (!(fakerootdir = virTestFakeRootDirInit()))
         abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
 
     if (mode)
         g_setenv("VIR_CGROUP_MOCK_MODE", mode, TRUE);
@@ -985,13 +977,11 @@ initFakeFS(const char *mode,
 static void
 cleanupFakeFS(char *fakerootdir)
 {
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
-
-    VIR_FREE(fakerootdir);
-    g_unsetenv("LIBVIRT_FAKE_ROOT_DIR");
     g_unsetenv("VIR_CGROUP_MOCK_MODE");
     g_unsetenv("VIR_CGROUP_MOCK_FILENAME");
+
+    virTestFakeRootDirCleanup(fakerootdir);
+    VIR_FREE(fakerootdir);
 }
 
 static int
diff --git a/tests/virhostdevtest.c b/tests/virhostdevtest.c
index 1aed0d2b6d..c64940458f 100644
--- a/tests/virhostdevtest.c
+++ b/tests/virhostdevtest.c
@@ -584,22 +584,14 @@ testNVMeDiskRoundtrip(const void *opaque G_GNUC_UNUSED)
 }
 
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
     int ret = 0;
     g_autofree char *fakerootdir = NULL;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        fprintf(stderr, "Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
 # define DO_TEST(fnc) \
     do { \
@@ -609,7 +601,7 @@ mymain(void)
 
     if (myInit() < 0) {
         fprintf(stderr, "Init data structures failed.");
-        virFileDeleteTree(fakerootdir);
+        virTestFakeRootDirCleanup(fakerootdir);
         return EXIT_FAILURE;
     }
 
@@ -622,8 +614,7 @@ mymain(void)
 
     myCleanup();
 
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }
diff --git a/tests/virpcitest.c b/tests/virpcitest.c
index 4c0f0b91c3..5ddf4de0bd 100644
--- a/tests/virpcitest.c
+++ b/tests/virpcitest.c
@@ -363,22 +363,14 @@ testVirPCIDeviceGetVPD(const void *opaque)
     return 0;
 }
 
-# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
-
 static int
 mymain(void)
 {
     int ret = 0;
     g_autofree char *fakerootdir = NULL;
 
-    fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
-
-    if (!g_mkdtemp(fakerootdir)) {
-        VIR_TEST_DEBUG("Cannot create fakerootdir");
-        abort();
-    }
-
-    g_setenv("LIBVIRT_FAKE_ROOT_DIR", fakerootdir, TRUE);
+    if (!(fakerootdir = virTestFakeRootDirInit()))
+        return EXIT_FAILURE;
 
 # define DO_TEST(fnc) \
     do { \
@@ -446,8 +438,7 @@ mymain(void)
 
     DO_TEST_PCI(testVirPCIDeviceGetVPD, 0, 0x03, 0, 0);
 
-    if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
-        virFileDeleteTree(fakerootdir);
+    virTestFakeRootDirCleanup(fakerootdir);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }