esphome/tests/components/update/common.yaml

substitutions:
  verify_ssl: "true"

esphome:
  on_boot:
    then:
      - if:
          condition:
            update.is_available:
          then:
            - logger.log: "Update available"
      - update.perform:
          force_update: true

wifi:
  ssid: MySSID
  password: password1

http_request:
  verify_ssl: ${verify_ssl}

ota:
  - platform: http_request

update:
  - platform: http_request
    name: Firmware Update
    source: http://example.com/manifest.json