Function validate

test/schema-special-usage.test.js:1034–1053

({
    params,
    body,
    querystring,
    headers,
    response
  })

  }

  async function validate ({
    params,
    body,
    querystring,
    headers,
    response
  }) {
    try {
      const res = await fastify.inject({
        method: 'POST',
        url: `/${params}`,
        headers: { id: headers },
        query: { id: querystring },
        payload: { id: body }
      })
      t.assert.strictEqual(res.statusCode, response)
    } catch (error) {
      t.assert.fail('should not throw')
    }
  }
})

test('Check mixed sync and async AJV validations', async (t) => {