We can run mutiple testng suites by adding them to a suite.xml file like this

<suite name="My suite">
<listeners>
<listener class-name="CustomReport.CustomReporting" />
</listeners>
<suite-files>
<suite-file path="./Suite_A.xml" />
<suite-file path="./Suite_B.xml" />
</suite-files>
</suite>

And we can add multiple tests to a individual xml file like Suite_A.xml like this

```