How to get Google access token

How to get Google access token programmatically (automated testing)?

• Create a project on Google-console: https://console.cloud.google.com/

• Go to Credentials -> + CREATE CREDENTIALS -> OAuth client ID:

  • Application Type: Web
  • Name: Some application's name
  • Authorized redirect URIs: https://developers.google.com/oauthplayground + (optionally) your real callback handlers, e.g. https://example.com/auth/google/callback.
  • Press Create.
  • Save Client ID and Client Secret.
    

• Go to https://developers.google.com/oauthplayground

• Press top right settings (gear) icon (OAuth 2.0 configuration):

  • (!) Force prompt: Consent Screen
  • Tick "Use your own OAuth credentials" and enter OAuth Client ID and OAuth Client secret, close the OAuth 2.0 configuration" screen.

• At the bottom of the Step 1 accordion panel enter required space-separated scopes (see https://developers.google.com/identity/protocols/oauth2/scopes#oauth2):

  • openid (default)

  • https://www.googleapis.com/auth/userinfo.email

  • https://www.googleapis.com/auth/userinfo.profile

  • Example:

    openid https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile
    

  • and press Authorize APIs.

• On the next screen choose the account (optional screen) and give the permissions to the app.

• Then you should be redirected to https://developers.google.com/oauthplayground/?code=SOME-SINGLE-USE-CODE&scope=openid&...

• Press Exchange authorization code for tokens

• OR manually via

  curl -v "https://oauth2.googleapis.com/token" -d "code=SOME-SINGLE-USE-CODE&redirect_uri=https%3A%2F%2Fdevelopers.google.com%2Foauthplayground&client_id=YOUR_APP_CLIENT_ID&client_secret=YOUR_APP_CLIENT_SECRET&scope=&grant_type=authorization_code"
  

• Get your non-expiring refresh token.

• Finally, get access token from Access token

• OR manually:

  curl -d "client_id=YOUR_APP_CLIENT_ID&client_secret=YOUR_APP_CLIENT_SECRET&grant_type=refresh_token&refresh_token=YOUR_APP_REFRESH_TOKEN" "https://oauth2.googleapis.com/token"
  

Validate:

curl "https://www.googleapis.com/oauth2/v1/userinfo?alt=json&access_token=ACCESS_TOKEN"

{
  "id": "10934363016XXXXXXXXXX",
  "picture": "https://lh3.googleusercontent.com/a-/AOh14GhoUlKjYgC-..."
}

Finally:

Enable API

https://console.cloud.google.com/apis/library/adsense.googleapis.com?project=webapp-{number}

or

https://console.cloud.google.com/apis/library/adsense.googleapis.com?project={client_id}