conf: add support for parsing/formatting virNWFilterBindingDefPtr

A typical XML representation of the virNWFilterBindingDefPtr struct
looks like this:

  <filterbinding>
    <owner>
      <name>f25arm7</name>
      <uuid>12ac8b8c-4f23-4248-ae42-fdcd50c400fd</uuid>
    </owner>
    <portdev name='vnet1'/>
    <mac address='52:54:00:9d:81:b1'/>
    <filterref filter='clean-traffic'>
      <parameter name='MAC' value='52:54:00:9d:81:b1'/>
    </filterref>
  </filterbinding>

Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

tests/virnwfilterbindingxml2xmltest.c

@@ -0,0 +1,112 @@
+/*
+ * virnwfilterbindingxml2xmltest.c: network filter binding XML testing
+ *
+ * Copyright (C) 2018 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <fcntl.h>
+
+#include "internal.h"
+#include "testutils.h"
+#include "virxml.h"
+#include "virnwfilterbindingdef.h"
+#include "testutilsqemu.h"
+#include "virstring.h"
+
+#define VIR_FROM_THIS VIR_FROM_NONE
+
+static int
+testCompareXMLToXMLFiles(const char *xml)
+{
+    char *actual = NULL;
+    int ret = -1;
+    virNWFilterBindingDefPtr dev = NULL;
+
+    virResetLastError();
+
+    if (!(dev = virNWFilterBindingDefParseFile(xml)))
+        goto fail;
+
+    if (!(actual = virNWFilterBindingDefFormat(dev)))
+        goto fail;
+
+    if (virTestCompareToFile(actual, xml) < 0)
+        goto fail;
+
+    ret = 0;
+
+ fail:
+    VIR_FREE(actual);
+    virNWFilterBindingDefFree(dev);
+    return ret;
+}
+
+typedef struct test_parms {
+    const char *name;
+} test_parms;
+
+static int
+testCompareXMLToXMLHelper(const void *data)
+{
+    int result = -1;
+    const test_parms *tp = data;
+    char *xml = NULL;
+
+    if (virAsprintf(&xml, "%s/virnwfilterbindingxml2xmldata/%s.xml",
+                    abs_srcdir, tp->name) < 0) {
+        goto cleanup;
+    }
+
+    result = testCompareXMLToXMLFiles(xml);
+
+ cleanup:
+    VIR_FREE(xml);
+
+    return result;
+}
+
+static int
+mymain(void)
+{
+    int ret = 0;
+
+#define DO_TEST(NAME) \
+    do { \
+        test_parms tp = { \
+            .name = NAME, \
+        }; \
+        if (virTestRun("NWFilter XML-2-XML " NAME, \
+                       testCompareXMLToXMLHelper, (&tp)) < 0) \
+            ret = -1; \
+    } while (0)
+
+    DO_TEST("simple");
+    DO_TEST("filter-vars");
+
+    return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+VIR_TEST_MAIN(mymain)