# Not sure how to write this test
# test_that(".onLoad works", {
#   # withr::local_options("ECHARTS4R_THEME" = "NOTNULL")
#   withr::with_options("ECHARTS4R_THEME", "NOTNULL")
#
#   .onLoad("x", "x")
#   expect_null( getOption("ECHARTS4R_THEME"))
#   expect_null( getOption("ECHARTS4R_FONT_FAMILY"))
#
# })