Test Ads

This guide explains how to enable test ads in your ads integration. It's important to enable test ads during development so that you can click on them without charging Google advertisers. If you click on too many ads without being in test mode, you risk your account being flagged for invalid activity.

There are two ways to get test ads:

  1. Use one of Google's sample ad units.
  2. Use your own ad unit and enable test devices.

Prerequisite

Sample ad units

The quickest way to enable testing is to use Google-provided test ad units. These ad units are not associated with your AdMob account, so there's no risk of your account generating invalid traffic when using these ad units. Here are sample ad units that point to specific test creatives for each format:

Ad format Sample ad unit ID
Banner ca-app-pub-3940256099942544/6300978111
Interstitial ca-app-pub-3940256099942544/1033173712
Interstitial Video ca-app-pub-3940256099942544/8691691433
Rewarded Video ca-app-pub-3940256099942544/5224354917
Native Advanced ca-app-pub-3940256099942544/2247696110
Native Advanced Video ca-app-pub-3940256099942544/1044960115

Enable test devices

If you want to do more rigorous testing with production-looking ads, you can now configure your device as a test device and use your own ad unit IDs that you've created in the AdMob UI.

Follow the steps below to add your device as a test device.

Add your test device

  1. Load your ads-integrated app and make an ad request.
  2. Check the logcat output for a message that looks like this:
    I/Ads: Use AdRequest.Builder.addTestDevice("33BE2250B43518CCDA7DE426D04EE231")
    to get test ads on this device."
    Copy your test device ID to your clipboard.
  3. Modify your code to call AdRequest.Builder.addTestDevice() with your test device ID. This method can be called multiple times for multiple devices.

    Java

    AdRequest request = new AdRequest.Builder()
    .addTestDevice("33BE2250B43518CCDA7DE426D04EE231")  // An example device ID
    .build();
    

    Kotlin

    val request = AdRequest.Builder()
    .addTestDevice("33BE2250B43518CCDA7DE426D04EE231")  // An example device ID
    .build()
    You can optionally check request.isTestDevice() to confirm that your device was properly added as a test device.
  4. Re-run your app. If the ad is a Google ad, you'll see a Test Ad label centered at the top of the ad (banner, interstitial, or rewarded video):

    For native advanced ads, the headline asset is prepended with the string "Test Ad".

Ads with this Test Ad label are safe to click. Requests, impressions, and clicks on test ads will not show up in your account's reports.

Testing with mediation

Google's sample ad units only show Google Ads. To test your mediation configuration, you must use the enable test devices approach.

Mediated ads do NOT render a Test Ad label. You are responsible for ensuring that test ads are enabled for each of your mediation networks so these networks don't flag your account for invalid activity. See each network's respective mediation guide for more information.

If you aren't sure whether a mediation ad network adapter supports test ads, it is safest to avoid clicking on ads from that network during development. You can use the getMediationAdapterClassName() method on any of the ad formats to figure out which ad network served the current ad.

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