adapt test syntax to not fail on `.children`
adapt test syntax to not fail on `.children`

... for sunburst files when reading off the d3-hierarchy output

plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,aburato/plotly.js,plotly/plotly.js,aburato/plotly.js,etpinard/plotly.js