Tests that creating multiple sessions works.
Connecting session 1
From session 1
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 1
            name : 
            origin : 
        }
    }
}
Connecting session 2
From session 2
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 1
            name : 
            origin : 
        }
    }
}
Reconnecting session 2
From session 2
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 1
            name : 
            origin : 
        }
    }
}
Reconnecting session 1
From session 1
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 1
            name : 
            origin : 
        }
    }
}
Connecting session 3
From session 3
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 1
            name : 
            origin : 
        }
    }
}
Destroying and creating context
From session 2
{
    method : Runtime.executionContextDestroyed
    params : {
        executionContextId : <executionContextId>
    }
}
id matching: true
From session 1
{
    method : Runtime.executionContextDestroyed
    params : {
        executionContextId : <executionContextId>
    }
}
id matching: true
From session 3
{
    method : Runtime.executionContextDestroyed
    params : {
        executionContextId : <executionContextId>
    }
}
id matching: true
From session 2
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 2
            name : 
            origin : 
        }
    }
}
From session 1
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 2
            name : 
            origin : 
        }
    }
}
From session 3
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 2
            name : 
            origin : 
        }
    }
}
Disconnecting all sessions
Connecting session 4
From session 4
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            id : 2
            name : 
            origin : 
        }
    }
}