tests: introduce qemucaps2xmlmock

We need to mock virFileExists to return true for "/dev/kvm" because the
test should not depend on host system.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

tests/Makefile.am

@@ -406,6 +406,7 @@ test_libraries = libshunload.la \
 if WITH_QEMU
 test_libraries += libqemumonitortestutils.la \
 		qemuxml2argvmock.la \
+		qemucaps2xmlmock.la \
 		$(NULL)
 endif WITH_QEMU
 
@@ -606,6 +607,12 @@ qemucaps2xmltest_SOURCES = \
 	$(NULL)
 qemucaps2xmltest_LDADD = $(qemu_LDADDS) $(LDADDS)
 
+qemucaps2xmlmock_la_SOURCES = \
+	qemucaps2xmlmock.c
+qemucaps2xmlmock_la_CFLAGS = $(AM_CFLAGS)
+qemucaps2xmlmock_la_LDFLAGS = -module -avoid-version \
+		-rpath /evil/libtool/hack/to/force/shared/lib/creation
+
 qemuagenttest_SOURCES = \
 	qemuagenttest.c \
 	testutils.c testutils.h \

tests/qemucaps2xmlmock.c

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2015 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/>.
+ *
+ * Author: Pavel Hrdina <phrdina@redhat.com>
+ */
+
+#include <config.h>
+#include <unistd.h>
+
+#include "internal.h"
+#include "virfile.h"
+
+bool
+virFileExists(const char *path)
+{
+    if (STREQ(path, "/dev/kvm"))
+        return true;
+    return access(path, F_OK) == 0;
+}

tests/qemucaps2xmltest.c

@@ -207,4 +207,4 @@ mymain(void)
     return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 
-VIRT_TEST_MAIN(mymain)
+VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/qemucaps2xmlmock.so")