function test_indexAt() {
            var component = Qt.createComponent("treeview/treeview_1.qml")
            compare(component.status, Component.Ready)
            var tree = component.createObject(container);
            verify(tree !== null, "tree created is null")
            verify(waitForRendering(tree), "TreeView did not render on time")
            var model = tree.model

            wait(50)    // This resolves the flakiness!

            // Sample each row and test
            for (var row = 0; row < tree.__listView.count; row++) {
                for (var x = 1; x < tree.getColumn(0).width; x += 10) {
                    var treeIndex = tree.indexAt(x, 50 * (row + 1) + 1) // offset by header height
                    console.log("treeIndex: ", treeIndex)
                    var modelIndex = model.index(row, 0)
                    if (treeIndex.row !== modelIndex.row
                        || treeIndex.column !== modelIndex.column
                        || treeIndex.internalId !== modelIndex.internalId) {
                        console.log("Test about to fail: row = " + row + ", __listView.count =" + tree.__listView.count)
                        console.log(" . . . . . . . . .  x =" + x + ", getColumn(0).width =" + tree.getColumn(0).width)
                        console.log("pairs of should-be-equal values: ",
                                    treeIndex.row, modelIndex.row,
                                    treeIndex.column, modelIndex.column,
                                    treeIndex.internalId, modelIndex.internalId)
                    }

                    tryCompare(treeIndex, "row", modelIndex.row)
                    tryCompare(treeIndex, "column", modelIndex.column)
                    tryCompare(treeIndex, "internalId", modelIndex.internalId)
                }
            }