[Qemu-devel] [RFC] tests: Add ivshmem qtest

["Andreas Färber" <afaerber@suse.de>]

Note that it launches two instances to as sharing memory is the purpose
of Nahanni/ivshmem.

Cc: Cam Macdonell <cam@cs.ualberta.ca>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 This test demonstrates a use case of running two QEMU instances in qtest.

 However, similar to mst's proposed KVM acpi-test, it fails on systems
 without KVM support, and we cannot use $(CONFIG_KVM) to make it conditional
 since that is a per-target define rather than host-wide.

 I wonder if libqtest should expose an API to start a QEMU instance and
 inquire via QMP whether the executable supports KVM, returning true or false?

 tests/Makefile       |  3 +++
 tests/ivshmem-test.c | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 tests/ivshmem-test.c

diff --git a/tests/Makefile b/tests/Makefile
index 6086f68..e4c3b12 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -137,6 +137,8 @@ check-qtest-i386-y += tests/pvpanic-test$(EXESUF)
 gcov-files-i386-y += i386-softmmu/hw/misc/pvpanic.c
 check-qtest-i386-y += tests/i82801b11-test$(EXESUF)
 gcov-files-i386-y += hw/pci-bridge/i82801b11.c
+check-qtest-i386-y += tests/ivshmem-test$(EXESUF)
+gcov-files-i386-y += i386-softmmu/hw/misc/ivshmem.c
 check-qtest-x86_64-y = $(check-qtest-i386-y)
 gcov-files-i386-y += i386-softmmu/hw/timer/mc146818rtc.c
 gcov-files-x86_64-y = $(subst i386-softmmu/,x86_64-softmmu/,$(gcov-files-i386-y))
@@ -287,6 +289,7 @@ tests/qdev-monitor-test$(EXESUF): tests/qdev-monitor-test.o $(libqos-pc-obj-y)
 tests/nvme-test$(EXESUF): tests/nvme-test.o
 tests/pvpanic-test$(EXESUF): tests/pvpanic-test.o
 tests/i82801b11-test$(EXESUF): tests/i82801b11-test.o
+tests/ivshmem-test$(EXESUF): tests/ivshmem-test.o
 tests/qemu-iotests/socket_scm_helper$(EXESUF): tests/qemu-iotests/socket_scm_helper.o
 
 # QTest rules
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
new file mode 100644
index 0000000..e981ad3
--- /dev/null
+++ b/tests/ivshmem-test.c
@@ -0,0 +1,40 @@
+/*
+ * QTest testcase for Nahanni
+ *
+ * Copyright (c) 2014 SUSE LINUX Products GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+#include <string.h>
+#include "libqtest.h"
+#include "qemu/osdep.h"
+
+/* Tests only initialization so far. TODO: Replace with functional tests */
+static void nop(void)
+{
+}
+
+int main(int argc, char **argv)
+{
+    QTestState *s1, *s2;
+    char *cmd;
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+    qtest_add_func("/ivshmem/nop", nop);
+
+    cmd = g_strdup_printf("-device ivshmem,shm=%s,size=1M", "qtest");
+    s1 = qtest_start(cmd);
+    s2 = qtest_start(cmd);
+    g_free(cmd);
+
+    ret = g_test_run();
+
+    qtest_quit(s1);
+    qtest_quit(s2);
+
+    return ret;
+}
-- 
1.8.4.5