erldns is an open source project licensed under an MIT license. Contributions are gladly accepted via GitHub pull requests.
erldns includes several test mechanisms.
To execute unit tests (and dialyzer for static analysis):
make test
The dnstest tool provides a suite of black-box functional tests for erldns (and any other DNS authoritative name server). The tests are largely based on the excellent suite of tests in PowerDNS. To run the tests, you must change erldns.config so that zones are loaded from priv/test.zones.json.
[
{erldns, [
{zones, "priv/test.zones.json"}
]}
]
Then you will need to run erldns. At this point it should be ready to test with dnstest. See the dnstest README for more details on how to run dnstest.