Tests possible breakpoints in array literal
{
    id : <messageId>
    result : {
        locations : [
            [0] : {
                columnNumber : 0
                lineNumber : 0
                scriptId : <scriptId>
            }
            [1] : {
                columnNumber : 6
                lineNumber : 0
                scriptId : <scriptId>
            }
            [2] : {
                columnNumber : 7
                lineNumber : 0
                scriptId : <scriptId>
                type : return
            }
            [3] : {
                columnNumber : 8
                lineNumber : 0
                scriptId : <scriptId>
                type : return
            }
        ]
    }
}