Function custom

test/internals/request-validate.test.js:201–212

({ schema, httpPart, url, method })

      const fastify = Fastify()
      let called = 0
      const custom = ({ schema, httpPart, url, method }) => {
        t.assert.strictEqual(schema, defaultSchema)
        t.assert.strictEqual(url, '/')
        t.assert.strictEqual(method, 'GET')
        t.assert.strictEqual(httpPart, 'querystring')

        return input => {
          called++
          t.assert.deepStrictEqual(input, { hello: 'world' })
          return true
        }
      }

      t.plan(10)