tests: qemu: Don't add fake machine types when testing with real data

Skip the step of adding all of the fake machine types which are required
for the legacy tests in case when we are testing with real capabilities.

Faking any data in the real capabilities undermines the point of testing
with real capabilities.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>

tests/testutilsqemu.c

@@ -332,28 +332,32 @@ int qemuTestCapsCacheInsert(virFileCachePtr cache,
         } else {
             tmpCaps = virQEMUCapsNew();
         }
-        virQEMUCapsSetArch(tmpCaps, i);
-        for (j = 0; qemu_machines[i][j] != NULL; j++) {
-            virQEMUCapsAddMachine(tmpCaps,
-                                  VIR_DOMAIN_VIRT_QEMU,
-                                  qemu_machines[i][j],
-                                  NULL,
-                                  NULL,
-                                  0,
-                                  false,
-                                  false);
-        }
-        for (j = 0; kvm_machines[i][j] != NULL; j++) {
-            virQEMUCapsAddMachine(tmpCaps,
-                                  VIR_DOMAIN_VIRT_KVM,
-                                  kvm_machines[i][j],
-                                  NULL,
-                                  NULL,
-                                  0,
-                                  false,
-                                  false);
-            virQEMUCapsSet(tmpCaps, QEMU_CAPS_KVM);
+
+        if (!virQEMUCapsHasMachines(tmpCaps)) {
+            virQEMUCapsSetArch(tmpCaps, i);
+            for (j = 0; qemu_machines[i][j] != NULL; j++) {
+                virQEMUCapsAddMachine(tmpCaps,
+                                      VIR_DOMAIN_VIRT_QEMU,
+                                      qemu_machines[i][j],
+                                      NULL,
+                                      NULL,
+                                      0,
+                                      false,
+                                      false);
+            }
+            for (j = 0; kvm_machines[i][j] != NULL; j++) {
+                virQEMUCapsAddMachine(tmpCaps,
+                                      VIR_DOMAIN_VIRT_KVM,
+                                      kvm_machines[i][j],
+                                      NULL,
+                                      NULL,
+                                      0,
+                                      false,
+                                      false);
+                virQEMUCapsSet(tmpCaps, QEMU_CAPS_KVM);
+            }
         }
+
         if (virFileCacheInsertData(cache, qemu_emulators[i], tmpCaps) < 0) {
             virObjectUnref(tmpCaps);
             return -1;