As a user, with a JQL function I can find all Test Executions where a user has at least one Test Run assigned to him

Users should be able to query Test Executions.

As a user, I can find all Test Executions where a user has at least one Test Run assigned to him, with a JQL function.

The JQL function must be named testExecWithTestRunsAssignedToUser and expect a single parameter with the username or none. If there are no parameters the function must use the current logged in user.

issuetype = 'Test Execution' and issue in testExecWithTestRunsAssignedToUser('userDPC')

issuetype = 'Test Execution' and issue in testExecWithTestRunsAssignedToUser()