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ds <- data.frame(
labels = c("A", "B", "C"),
values = c(10, 40, 60)
)
plot_ly(ds, labels = ~labels, values = ~values) %>%
add_pie()
test_that("No cartesian axes are supplied to a pie chart", {
p <- plot_ly(ds, labels = ~labels, values = ~values) %>%
add_pie()
l <- plotly_build(p)$x
expect_true(all(l$data[[1]]$labels == ds$labels))
expect_true(all(l$data[[1]]$values == ds$values))
expect_null(l$data[[1]]$textfont)
expect_null(l$layout$xaxis)
expect_null(l$layout$yaxis)
expect_true(l$layout$showlegend)
})
test_that("stroke/span controls slice outline; color/size controls text", {
p <- plot_ly(ds, labels = ~labels, values = ~values) %>%
add_pie(color = I("white"), size = I(20), stroke = I("black"), span = I(5))
l <- plotly_build(p)$x
expect_true(all(l$data[[1]]$labels == ds$labels))
expect_true(all(l$data[[1]]$values == ds$values))
expect_true(l$data[[1]]$textfont$color == toRGB("white"))
expect_true(l$data[[1]]$textfont$size == 20)
expect_true(l$data[[1]]$marker$line$color == toRGB("black"))
expect_true(l$data[[1]]$marker$line$width == 5)
})
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