Debugging

Nock uses node internals debuglog, so just run with environmental variable NODE_DEBUG set to nock:*.

NODE_DEBUG=nock:* node my_test.js

Each step in the matching process is logged this way and can be useful when determining why a request was not intercepted by Nock.

Debug Namespaces

Enable a single area instead of nock:*:

Namespace	Logs
nock:scope:<host>	Matching decisions and reply details for one scope. <host> omits the port when it is the default, for example nock:scope:example.com or nock:scope:localhost:8080
nock:intercept	Interceptor lookup and net-connect decisions
nock:playback_interceptor	Reply callback results
nock:recorder	Recording
nock:back	Nock Back
nock:common	Internal helpers

Example

The following shows that matching failed because the request had an extra search parameter.

import got from 'got'
import nock from 'nock'

nock('http://example.com').get('/').query({ foo: 'bar' }).reply()

await got('http://example.com/?foo=bar&baz=foz')

NODE_DEBUG=nock:scope:example.com node my_test.js

...
NOCK:SCOPE:EXAMPLE.COM 103514: Interceptor queries: {"foo":"bar"}
NOCK:SCOPE:EXAMPLE.COM 103514:     Request queries: {"foo":"bar","baz":"foz"}
NOCK:SCOPE:EXAMPLE.COM 103514: query matching failed