test-qga: add test for guest-get-osinfo

Add test for guest-get-osinfo command.

Qemu-ga was modified to accept QGA_OS_RELEASE environment variable. If
the variable is defined it is interpreted as path to the os-release file
and it is parsed instead of the default paths.

Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
* move declarations to beginning of functions
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

qga/commands-posix.c

@@ -2682,7 +2682,8 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
 {
     GuestOSInfo *info = NULL;
     struct utsname kinfo;
-    GKeyFile *osrelease;
+    GKeyFile *osrelease = NULL;
+    const char *qga_os_release = g_getenv("QGA_OS_RELEASE");
 
     info = g_new0(GuestOSInfo, 1);
 
@@ -2697,9 +2698,13 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
         info->machine = g_strdup(kinfo.machine);
     }
 
-    osrelease = ga_parse_osrelease("/etc/os-release");
-    if (osrelease == NULL) {
-        osrelease = ga_parse_osrelease("/usr/lib/os-release");
+    if (qga_os_release != NULL) {
+        osrelease = ga_parse_osrelease(qga_os_release);
+    } else {
+        osrelease = ga_parse_osrelease("/etc/os-release");
+        if (osrelease == NULL) {
+            osrelease = ga_parse_osrelease("/usr/lib/os-release");
+        }
     }
 
     if (osrelease != NULL) {

tests/data/test-qga-os-release

+ID=qemu-ga-test
+NAME=QEMU-GA
+PRETTY_NAME="QEMU Guest Agent test"
+VERSION="Test 1"
+VERSION_ID=1
+VARIANT="Unit test \"\'\$\`\\ and \\\\ etc."
+VARIANT_ID=unit-test

tests/test-qga.c

@@ -936,6 +936,60 @@ static void test_qga_guest_exec_invalid(gconstpointer fix)
     QDECREF(ret);
 }
 
+static void test_qga_guest_get_osinfo(gconstpointer data)
+{
+    TestFixture fixture;
+    const gchar *str;
+    gchar *cwd, *env[2];
+    QDict *ret, *val;
+
+    cwd = g_get_current_dir();
+    env[0] = g_strdup_printf(
+        "QGA_OS_RELEASE=%s%ctests%cdata%ctest-qga-os-release",
+        cwd, G_DIR_SEPARATOR, G_DIR_SEPARATOR, G_DIR_SEPARATOR);
+    env[1] = NULL;
+    g_free(cwd);
+    fixture_setup(&fixture, NULL, env);
+
+    ret = qmp_fd(fixture.fd, "{'execute': 'guest-get-osinfo'}");
+    g_assert_nonnull(ret);
+    qmp_assert_no_error(ret);
+
+    val = qdict_get_qdict(ret, "return");
+
+    str = qdict_get_try_str(val, "id");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "qemu-ga-test");
+
+    str = qdict_get_try_str(val, "name");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "QEMU-GA");
+
+    str = qdict_get_try_str(val, "pretty-name");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "QEMU Guest Agent test");
+
+    str = qdict_get_try_str(val, "version");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "Test 1");
+
+    str = qdict_get_try_str(val, "version-id");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "1");
+
+    str = qdict_get_try_str(val, "variant");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "Unit test \"'$`\\ and \\\\ etc.");
+
+    str = qdict_get_try_str(val, "variant-id");
+    g_assert_nonnull(str);
+    g_assert_cmpstr(str, ==, "unit-test");
+
+    QDECREF(ret);
+    g_free(env[0]);
+    fixture_tear_down(&fixture, NULL);
+}
+
 int main(int argc, char **argv)
 {
     TestFixture fix;
@@ -972,6 +1026,8 @@ int main(int argc, char **argv)
     g_test_add_data_func("/qga/guest-exec", &fix, test_qga_guest_exec);
     g_test_add_data_func("/qga/guest-exec-invalid", &fix,
                          test_qga_guest_exec_invalid);
+    g_test_add_data_func("/qga/guest-get-osinfo", &fix,
+                         test_qga_guest_get_osinfo);
 
     if (g_getenv("QGA_TEST_SIDE_EFFECTING")) {
         g_test_add_data_func("/qga/fsfreeze-and-thaw", &fix,