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test_that("unit_pt", {
expect_equal(
unit_pt(10),
grid::unit(10, "pt")
)
expect_identical(
unit_pt(1:10),
grid::unit(1:10, "pt")
)
})
test_that("gpar_empty", {
expect_identical(
gpar_empty(),
grid::gpar()
)
})
test_that("text_grob", {
# basic functionality, gp is set to gpar() if not provided
expect_identical(
text_grob("test", 10, 20, name = "abc"),
textGrob(
"test",
x = unit(10, "pt"), y = unit(20, "pt"),
hjust = 0, vjust = 0,
gp = gpar(),
name = "abc"
)
)
# basic functionality, x and y are set to 0 if not provided
expect_identical(
text_grob("test", name = "abc"),
textGrob(
"test",
x = unit(0, "pt"), y = unit(0, "pt"),
hjust = 0, vjust = 0,
gp = gpar(),
name = "abc"
)
)
# gp is set as requested
gp <- gpar(col = "blue", fill = "red")
expect_identical(
text_grob("test", 10, 20, gp = gp, name = "abc"),
textGrob(
"test",
x = unit(10, "pt"), y = unit(20, "pt"),
hjust = 0, vjust = 0,
gp = gp,
name = "abc"
)
)
# if no name is provided, different names are assigned
g1 <- text_grob("test")
g2 <- text_grob("test")
expect_false(identical(g1$name, g2$name))
# function is not vectorized
expect_error(
text_grob(c("test", "test"), 10, 20),
"not vectorized"
)
expect_error(
text_grob("test", 1:5, 20),
"not vectorized"
)
expect_error(
text_grob("test", 10, 1:5),
"not vectorized"
)
# arguments of length 0 are also disallowed
expect_error(
text_grob("test", numeric(0), 5),
"not vectorized"
)
})
test_that("raster_grob", {
# basic functionality
image <- matrix(0:1, ncol = 5, nrow = 4)
expect_identical(
raster_grob(image, 10, 20, 50, 40, gp = gpar(), name = "abc"),
rasterGrob(
image,
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(50, "pt"), height = unit(40, "pt"),
hjust = 0, vjust = 0,
interpolate = TRUE,
gp = gpar(),
name = "abc"
)
)
# interpolate is set as requested, gp default is NULL
expect_identical(
raster_grob(image, 10, 20, 50, 40, interpolate = FALSE, name = "abc"),
rasterGrob(
image,
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(50, "pt"), height = unit(40, "pt"),
hjust = 0, vjust = 0,
interpolate = FALSE,
gp = NULL,
name = "abc"
)
)
# if no name is provided, different names are assigned
g1 <- raster_grob(image)
g2 <- raster_grob(image)
expect_false(identical(g1$name, g2$name))
# function is not vectorized
expect_error(
raster_grob(image, c(10, 20), 20, 100, 140),
"not vectorized"
)
expect_error(
raster_grob(image, 10, numeric(0), 100, 140),
"not vectorized"
)
})
test_that("rect_grob", {
# basic functionality, gp is set to gpar() if not provided
expect_identical(
rect_grob(10, 20, 100, 140, name = "abc"),
rectGrob(
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(100, "pt"), height = unit(140, "pt"),
hjust = 0, vjust = 0,
gp = gpar(),
name = "abc"
)
)
# gp is set as requested
gp <- gpar(col = "blue", fill = "red")
expect_identical(
rect_grob(10, 20, 100, 140, gp = gp, name = "abc"),
rectGrob(
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(100, "pt"), height = unit(140, "pt"),
hjust = 0, vjust = 0,
gp = gp,
name = "abc"
)
)
# if no name is provided, different names are assigned
g1 <- rect_grob()
g2 <- rect_grob()
expect_false(identical(g1$name, g2$name))
# function is not vectorized
expect_error(
rect_grob(c(10, 20), 20, 100, 140),
"not vectorized"
)
expect_error(
rect_grob(10, numeric(0), 100, 140),
"not vectorized"
)
})
test_that("roundrect_grob", {
# basic functionality, gp is set to gpar() if not provided
expect_identical(
roundrect_grob(10, 20, 100, 140, 10, name = "abc"),
roundrectGrob(
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(100, "pt"), height = unit(140, "pt"),
r = unit(10, "pt"),
just = c(0, 0),
gp = gpar(),
name = "abc"
)
)
# gp is set as requested
gp <- gpar(col = "blue", fill = "red")
expect_identical(
roundrect_grob(10, 20, 100, 140, 20, gp = gp, name = "abc"),
roundrectGrob(
x = unit(10, "pt"), y = unit(20, "pt"),
width = unit(100, "pt"), height = unit(140, "pt"),
r = unit(20, "pt"),
just = c(0, 0),
gp = gp,
name = "abc"
)
)
# if no name is provided, different names are assigned
g1 <- roundrect_grob()
g2 <- roundrect_grob()
expect_false(identical(g1$name, g2$name))
# function is not vectorized
expect_error(
roundrect_grob(c(10, 20), 20, 100, 140, 20),
"not vectorized"
)
expect_error(
roundrect_grob(10, numeric(0), 100, 140, 20),
"not vectorized"
)
})
test_that("set_grob_coords", {
g <- list(x = 0, y = 0)
# setting coords as numbers
expect_identical(
set_grob_coords(g, x = 20, y = 40),
list(x = 20, y = 40)
)
# setting coords as units
expect_identical(
set_grob_coords(g, x = unit_pt(20), y = unit_pt(40)),
list(x = unit_pt(20), y = unit_pt(40))
)
})
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