gt <- gtable(widths = unit(1, "null"), heights = unit(rep(1, 4), "null"))
gt <- gtable_add_grob(
gt,
list(circleGrob(), rectGrob(), polygonGrob(), linesGrob()),
t = 1:4,
l = 1,
name = c('circle', 'rect', 'polygon', 'lines')
)
test_that("filtering works", {
gt_fil <- gtable_filter(gt, 'circle')
expect_equal(gt_fil$layout$name, "circle")
gt_fil <- gtable_filter(gt, 'circle', invert = TRUE)
expect_equal(gt_fil$layout$name, c("rect", "polygon", "lines"))
gt_fil <- gtable_filter(gt, '(circle)|(rect)')
expect_equal(gt_fil$layout$name, c("circle", "rect"))
gt_fil <- gtable_filter(gt, '(circle)|(rect)', fixed = TRUE, trim = FALSE)
expect_length(gt_fil, 0)
})
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