    @Test
    void testGetValue() {

        GetValue value = new GetValue();
        value.setValue(Base64.getEncoder().encodeToString("hello".getBytes()));
        when(configSource.client.getKVValue(anyString())).thenReturn(new Response<GetValue>(value, 0L, true, 0L));
        assertEquals("hello", configSource.getValue("test"));
    }