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test_that("accepts width and height params", {
df <- data_frame(x = c("a", "b"), y = c("a", "b"))
out1 <- layer_data(ggplot(df, aes(x, y)) + geom_tile())
expect_equal(out1$xmin, new_mapped_discrete(c(0.5, 1.5)))
expect_equal(out1$xmax, new_mapped_discrete(c(1.5, 2.5)))
out2 <- layer_data(ggplot(df, aes(x, y)) + geom_tile(width = 0.5, height = 0.5))
expect_equal(out2$xmin, new_mapped_discrete(c(0.75, 1.75)))
expect_equal(out2$xmax, new_mapped_discrete(c(1.25, 2.25)))
})
test_that("accepts width and height aesthetics", {
df <- data_frame(x = 0, y = 0, width = c(2, 4), height = c(2, 4))
p <- ggplot(df, aes(x, y, width = width, height = height)) +
geom_tile(fill = NA, colour = "black", linewidth = 1)
out <- layer_data(p)
boundary <- as.data.frame(tibble::tribble(
~xmin, ~xmax, ~ymin, ~ymax,
-1, 1, -1, 1,
-2, 2, -2, 2
))
expect_equal(out[c("xmin", "xmax", "ymin", "ymax")], boundary)
})
test_that("accepts linejoin parameter", {
df <- data_frame(x = c("a", "b"), y = c("a", "b"))
gp1 <- layer_grob(ggplot(df, aes(x, y)) + geom_tile())[[1]]$gp
expect_equal(gp1$linejoin, "mitre")
gp2 <- layer_grob(ggplot(df, aes(x, y)) + geom_tile(linejoin = "round"))[[1]]$gp
expect_equal(gp2$linejoin, "round")
})
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