tests: Move qemu caps XML parsing into shared unit

Later on, we the qemu capabilities XML parsing code may come handy so
instead of duplicating the code make the already existing one shared.
By the same time, make the function accept file name instead of XML
document stored already in memory.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

tests/qemucapabilitiestest.c

@@ -85,55 +85,6 @@ testQemuFeedMonitor(char *replies,
     return NULL;
 }
 
-static virQEMUCapsPtr
-testQemuGetCaps(char *caps)
-{
-    virQEMUCapsPtr qemuCaps = NULL;
-    xmlDocPtr xml;
-    xmlXPathContextPtr ctxt = NULL;
-    ssize_t i, n;
-    xmlNodePtr *nodes = NULL;
-
-    if (!(xml = virXMLParseStringCtxt(caps, "(test caps)", &ctxt)))
-        goto error;
-
-    if ((n = virXPathNodeSet("/qemuCaps/flag", ctxt, &nodes)) < 0) {
-        fprintf(stderr, "failed to parse qemu capabilities flags");
-        goto error;
-    }
-
-    if (n > 0) {
-        if (!(qemuCaps = virQEMUCapsNew()))
-            goto error;
-
-        for (i = 0; i < n; i++) {
-            char *str = virXMLPropString(nodes[i], "name");
-            if (str) {
-                int flag = virQEMUCapsTypeFromString(str);
-                if (flag < 0) {
-                    fprintf(stderr, "Unknown qemu capabilities flag %s", str);
-                    VIR_FREE(str);
-                    goto error;
-                }
-                VIR_FREE(str);
-                virQEMUCapsSet(qemuCaps, flag);
-            }
-        }
-    }
-
-    VIR_FREE(nodes);
-    xmlFreeDoc(xml);
-    xmlXPathFreeContext(ctxt);
-    return qemuCaps;
-
- error:
-    VIR_FREE(nodes);
-    virObjectUnref(qemuCaps);
-    xmlFreeDoc(xml);
-    xmlXPathFreeContext(ctxt);
-    return NULL;
-}
-
 static int
 testQemuCapsCompare(virQEMUCapsPtr capsProvided,
                     virQEMUCapsPtr capsComputed)
@@ -166,7 +117,7 @@ testQemuCaps(const void *opaque)
     int ret = -1;
     const testQemuData *data = opaque;
     char *repliesFile = NULL, *capsFile = NULL;
-    char *replies = NULL, *caps = NULL;
+    char *replies = NULL;
     qemuMonitorTestPtr mon = NULL;
     virQEMUCapsPtr capsProvided = NULL, capsComputed = NULL;
 
@@ -176,14 +127,13 @@ testQemuCaps(const void *opaque)
                     abs_srcdir, data->base) < 0)
         goto cleanup;
 
-    if (virtTestLoadFile(repliesFile, &replies) < 0 ||
-        virtTestLoadFile(capsFile, &caps) < 0)
+    if (virtTestLoadFile(repliesFile, &replies) < 0)
         goto cleanup;
 
     if (!(mon = testQemuFeedMonitor(replies, data->xmlopt)))
         goto cleanup;
 
-    if (!(capsProvided = testQemuGetCaps(caps)))
+    if (!(capsProvided = qemuTestParseCapabilities(capsFile)))
         goto cleanup;
 
     if (!(capsComputed = virQEMUCapsNew()))
@@ -207,7 +157,6 @@ testQemuCaps(const void *opaque)
     VIR_FREE(repliesFile);
     VIR_FREE(capsFile);
     VIR_FREE(replies);
-    VIR_FREE(caps);
     qemuMonitorTestFree(mon);
     virObjectUnref(capsProvided);
     virObjectUnref(capsComputed);

tests/testutilsqemu.c

@@ -373,4 +373,53 @@ testSCSIDeviceGetSgName(const char *sysfs_prefix ATTRIBUTE_UNUSED,
 qemuBuildCommandLineCallbacks testCallbacks = {
     .qemuGetSCSIDeviceSgName = testSCSIDeviceGetSgName,
 };
+
+virQEMUCapsPtr
+qemuTestParseCapabilities(const char *capsFile)
+{
+    virQEMUCapsPtr qemuCaps = NULL;
+    xmlDocPtr xml;
+    xmlXPathContextPtr ctxt = NULL;
+    ssize_t i, n;
+    xmlNodePtr *nodes = NULL;
+
+    if (!(xml = virXMLParseFileCtxt(capsFile, &ctxt)))
+        goto error;
+
+    if ((n = virXPathNodeSet("/qemuCaps/flag", ctxt, &nodes)) < 0) {
+        fprintf(stderr, "failed to parse qemu capabilities flags");
+        goto error;
+    }
+
+    if (n > 0) {
+        if (!(qemuCaps = virQEMUCapsNew()))
+            goto error;
+
+        for (i = 0; i < n; i++) {
+            char *str = virXMLPropString(nodes[i], "name");
+            if (str) {
+                int flag = virQEMUCapsTypeFromString(str);
+                if (flag < 0) {
+                    fprintf(stderr, "Unknown qemu capabilities flag %s", str);
+                    VIR_FREE(str);
+                    goto error;
+                }
+                VIR_FREE(str);
+                virQEMUCapsSet(qemuCaps, flag);
+            }
+        }
+    }
+
+    VIR_FREE(nodes);
+    xmlFreeDoc(xml);
+    xmlXPathFreeContext(ctxt);
+    return qemuCaps;
+
+ error:
+    VIR_FREE(nodes);
+    virObjectUnref(qemuCaps);
+    xmlFreeDoc(xml);
+    xmlXPathFreeContext(ctxt);
+    return NULL;
+}
 #endif

tests/testutilsqemu.h

@@ -3,8 +3,11 @@
 # include "capabilities.h"
 # include "domain_conf.h"
 # include "qemu/qemu_command.h"
+# include "qemu/qemu_capabilities.h"
 
 virCapsPtr testQemuCapsInit(void);
 virDomainXMLOptionPtr testQemuXMLConfInit(void);
 extern qemuBuildCommandLineCallbacks testCallbacks;
+
+virQEMUCapsPtr qemuTestParseCapabilities(const char *capsFile);
 #endif