qtest: Add qtest_add_data_func() wrapper function

It calls g_test_add_data_func() with a path supplemented by the
architecture, like qtest_add_func() does.
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

tests/libqtest.c

@@ -652,6 +652,13 @@ void qtest_add_func(const char *str, void (*fn))
     g_free(path);
 }
 
+void qtest_add_data_func(const char *str, const void *data, void (*fn))
+{
+    gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
+    g_test_add_data_func(path, data, fn);
+    g_free(path);
+}
+
 void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 {
     const uint8_t *ptr = data;

tests/libqtest.h

@@ -344,6 +344,18 @@ const char *qtest_get_arch(void);
  */
 void qtest_add_func(const char *str, void (*fn));
 
+/**
+ * qtest_add_data_func:
+ * @str: Test case path.
+ * @data: Test case data
+ * @fn: Test case function
+ *
+ * Add a GTester testcase with the given name, data and function.
+ * The path is prefixed with the architecture under test, as
+ * returned by qtest_get_arch().
+ */
+void qtest_add_data_func(const char *str, const void *data, void (*fn));
+
 /**
  * qtest_start:
  * @args: other arguments to pass to QEMU