> For the complete documentation index, see [llms.txt](https://docs.puppetry.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.puppetry.app/master/running-tests.md).

# Running tests

When we are ready with our test suite we can run the tests. Click on **Run..** item in the main menu (or press **F6**).

![Run tests menu item](/files/-Lh_4MS0_BVJ9fXnADzm)

You get **Run reports** modal window

![Run reports modal window](/files/-Lh_4isNh4JBLSb0YVQK)

By default Puppetry runs tests in headless mode, meaning it launches Chromium in background. You can make to run the tests in Chrome browser with **Run in browser** switch:

![Chmonim options](/files/-Lh_57y6IMojqXU2vGKg)

This opens an input for [Chromium command line options](https://peter.sh/experiments/chromium-command-line-switches/)

 The modal window also allows you to select a [target environment](https://docs.puppetry.app/template):

![Selecting target environment](/files/-Lh_F9wkSHAae-ZuBKyV)

Finally we can select which suites we are going to run

After pressing **Run** button Puppetry opens panel **Test report** with test results. When test ran successfully we get a page like that:

![Successful test run ](/files/-Lh_Huv9P4Ovol73bklZ)

If we click on Open directory with generated screenshots link we can see generated folder named after the test case where we can find the screenshot:

![Generated screenshot](/files/-LhLfspmHAqA5yqYGgzv)

However if test failed the page look as follows:

![Errored test run](/files/-Lh_HxTy-iF-xQh72dOr)

If the error message doesn't clarify the failure enough, you can click on **Error details** link:

![Test run error details](/files/-Lh_HzwhzekG3ElMNu6M)