---
title: Android Espresso Options
description: Various Android Espresso options to improve your tests.
source_url:
  html: https://testingbot.com/support/app-automate/espresso/options
  md: https://testingbot.com/support/app-automate/espresso/options/index.md
---
# Set Espresso Test Runner

By default, TestingBot will run your Espresso tests with `${packageName}/androidx.test.runner.AndroidJUnitRunner` (TestingBot substitutes `${packageName}` with your app's package id automatically).

If you have defined your own `testInstrumentationRunner`, you can pass this custom runner during the start Espresso call:

[CLI](https://testingbot.com#)[cURL](https://testingbot.com#)

    testingbot espresso app.apk app-test.apk \
      --device "Pixel 6" \
      --platform-version "12" \
      --test-runner "${packageName}/customTestRunner"

    curl -u api_key:api_secret \
    -X POST "https://api.testingbot.com/v1/app-automate/espresso/:id/run" \
    -d '{ "espressoOptions": { "testRunner": "${packageName}/customTestRunner" }, "capabilities":[{"version":"12", "deviceName":"Pixel 6", "platformName":"Android"}]}' \
    -H "Content-Type: application/json"

Replace the `:id` with the identifier you received during the app upload call.

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