test UNICEF theme; fix #59

tests/testthat/test-theme_unicef.R

@@ -0,0 +1,53 @@
+# Tests for theme_unicef() -----------------------------------------------------
+
+library(ggplot2)
+
+test_that("theme_unicef works as expected", {
+  ## Test acdc_fonts class ----
+  testthat::expect_type(unicef_fonts, "list")
+
+  ## Test length of acdc fonts ----
+  testthat::expect_equal(length(unicef_fonts), 4)
+
+  ## Test output of set_acdc_font ----
+  testthat::expect_type(set_unicef_font(), "character")
+  testthat::expect_equal(length(set_unicef_font()), 1)
+
+  ## test theme_unicef() ----
+
+  ## scatterplot
+  p <- ggplot(
+    data = mtcars, mapping = aes(x = mpg, y = disp, colour = factor(cyl))
+  ) +
+  geom_point(size = 3) +
+  scale_colour_manual(
+    name = "Cylinders",
+    values = unicef_palettes$unicef_secondary
+  ) +
+  labs(
+    title = "UNICEF Theme",
+    subtitle = "Using the UNICEF secondary palette",
+  )
+
+  ### Test main plotting api ----
+  testthat::expect_silent(p + theme_unicef())
+  testthat::expect_silent(p + theme_unicef())
+
+  ### Test grid ----
+  testthat::expect_silent(p + theme_unicef(grid = "X"))
+  testthat::expect_silent(p + theme_unicef(grid = "Xx"))
+  testthat::expect_silent(p + theme_unicef(grid = "Y"))
+  testthat::expect_silent(p + theme_unicef(grid = "Yy"))
+  testthat::expect_silent(p + theme_unicef(grid = "XxYy"))
+  testthat::expect_silent(p + theme_unicef(grid = FALSE))
+
+  ### Test axis ----
+  testthat::expect_silent(p + theme_unicef(axis = TRUE))
+  testthat::expect_silent(p + theme_unicef(axis = "x"))
+  testthat::expect_silent(p + theme_unicef(axis = "y"))
+  testthat::expect_silent(p + theme_unicef(axis = "xy"))
+
+  ### Test ticks ----
+  testthat::expect_silent(p + theme_unicef(ticks = TRUE))
+})
+