[Qemu-devel] [PATCH V12 3/3] tests: add a unit test for the vmgenid device.

[Gal Hammer <ghammer@redhat.com>]

Signed-off-by: Gal Hammer <ghammer@redhat.com>

---
 tests/Makefile       |  2 ++
 tests/vmgenid-test.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 tests/vmgenid-test.c

diff --git a/tests/Makefile b/tests/Makefile
index d5df168..6b600c3 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -70,6 +70,7 @@ check-unit-y += tests/test-qemu-opts$(EXESUF)
 gcov-files-test-qemu-opts-y = qom/test-qemu-opts.c
 check-unit-y += tests/test-write-threshold$(EXESUF)
 gcov-files-test-write-threshold-y = block/write-threshold.c
+check-qtest-i386-y += tests/vmgenid-test$(EXESUF)
 
 check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
 
@@ -363,6 +364,7 @@ tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o qemu-char.o qemu-timer.o
 tests/qemu-iotests/socket_scm_helper$(EXESUF): tests/qemu-iotests/socket_scm_helper.o
 tests/test-qemu-opts$(EXESUF): tests/test-qemu-opts.o libqemuutil.a libqemustub.a
 tests/test-write-threshold$(EXESUF): tests/test-write-threshold.o $(block-obj-y) libqemuutil.a libqemustub.a
+tests/vmgenid-test$(EXESUF): tests/vmgenid-test.o
 
 ifeq ($(CONFIG_POSIX),y)
 LIBS += -lutil
diff --git a/tests/vmgenid-test.c b/tests/vmgenid-test.c
new file mode 100644
index 0000000..d9c3e29
--- /dev/null
+++ b/tests/vmgenid-test.c
@@ -0,0 +1,48 @@
+/*
+ * QTest testcase for VM Generation ID
+ *
+ * Copyright (c) 2014 Red Hat, Inc.
+ *
+ * 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 <string.h>
+#include "libqtest.h"
+
+static void vmgenid_test(void)
+{
+    static const uint8_t expected[16] = {
+        0x32, 0x4e, 0x6e, 0xaf, 0xd1, 0xd1, 0x4b, 0xf6,
+        0xbf, 0x41, 0xb9, 0xbb, 0x6c, 0x91, 0xfb, 0x87
+    };
+    uint8_t guid[16];
+    uint32_t i;
+
+    // Emulate the ACPI _INI method (tells the device where the physical
+    // memory was "allocated".
+    writel(0xfedf0000, 0x0001f000);
+   
+    // Skip the ACPI ADDR method and read the GUID directly from memory.
+    for (i = 0; i < 16; i++) {
+        guid[i] = readb(0x0001f000 + i);
+    } 
+
+    g_assert_cmpuint(sizeof(guid), ==, sizeof(expected));
+    g_assert(memcmp(guid, expected, sizeof(guid)) == 0);
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+    qtest_add_func("/vmgenid/vmgenid", vmgenid_test);
+
+    qtest_start("-global vmgenid.uuid=324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87");
+    ret = g_test_run();
+
+    qtest_end();
+
+    return ret;
+}
-- 
2.1.0