Language: Java
Label: vulnerable
CWE: CWE-400 \u2014 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Code:
    public void testDecorationWithNull() {
        Http2ConnectionDecoder delegate = mock(Http2ConnectionDecoder.class);

        Http2EmptyDataFrameConnectionDecoder decoder = new Http2EmptyDataFrameConnectionDecoder(delegate, 2);
        decoder.frameListener(null);
        assertNull(decoder.frameListener());
    }