hcxhashtool has now a build in test for PSK and/or PMK. To verify that you captured and converted the correct handshake do the following:
$ hcxpcapngtool -o test.22000 your_capfile_here.pcapng
$ hcxhashtool -i test.22000 --psk=your_PSK_here
$ hcxpcapngtool -o test.22000 your_capfile_here.pcapng
$ hcxhashtool -i test.22000 --psk=your_PSK_here