DotNetCoreConfigurationStudy/Study.XUnitTest/App.json

{
  "AppConfiguration": {
    "MainWindow": {
      "Height": "400",
      "Width": "600",
      "Top": "0",
      "Left": "0"
    },
    "ConnectionString":"Server=(localdb)\\\\mssqllocaldb;Database=DatabaseName;Trusted_Connection=True;MultipleActiveResultSets=true"
  }
}