1 files changed, 43 insertions, 0 deletions
diff --git a/test/h5test.c b/test/h5test.c
index fb5b83d..888fded 100644
--- a/test/h5test.c
+++ b/test/h5test.c
@@ -1901,3 +1901,46 @@ error:
     return NULL;
 } /* h5_get_dummy_vfd_class */
 
+
+/*-------------------------------------------------------------------------
+ * Function:    h5_get_dummy_vol_class()
+ *
+ * Purpose:     Returns a disposable, generally non-functional,
+ *              VOL class struct.
+ *
+ *              In some of the test code, we need a disposable VOL driver
+ *              but we don't want to mess with the real VFDs and we also
+ *              don't have access to the internals of the real VOL drivers
+ *              (which use static globals and functions) to easily duplicate
+ *              them (e.g.: for testing VOL driver ID handling).
+ *
+ *              This API call will return a pointer to a VOL class that
+ *              can be used to construct a test VOL using H5VLregister().
+ *
+ * Return:      Success:    A pointer to a VOL class struct
+ *              Failure:    NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+H5VL_class_t *
+h5_get_dummy_vol_class(void)
+{
+    H5VL_class_t *vol_class = NULL;     /* Dummy VOL class that will be returned */
+
+    /* Create the class and initialize everything to zero/NULL */
+    if(NULL == (vol_class = (H5VL_class_t *)HDcalloc((size_t)1, sizeof(H5VL_class_t))))
+        TEST_ERROR;
+
+    /* Fill in the minimum parameters to make a VOL driver class that
+     * can be registered.
+     */
+    vol_class->name = "dummy";
+
+    return vol_class;
+
+error:
+    if(vol_class)
+        HDfree(vol_class);
+    return NULL;
+} /* h5_get_dummy_vol_class */
+