s test is for HSQLDB in particular.
&nbsp;     * HSQLDB auto commits transactions that execute schema creation commands.
&nbsp;     * This invalidates the rollback logic that the test is trying to tests.
&nbsp;     * So first createVertexLabel, commit delete and then test rollback.
&nbsp;     */
&nbsp;    @Test
&nbsp;    public void shouldRollbackByDefault() {
<b class="fc">&nbsp;        Vertex a1 = this.sqlgGraph.addVertex(T.label, &quot;A&quot;, &quot;name&quot;, &quot;a1&quot;);</b>
<b class="fc">&nbsp; 