tests/testthat/test-kable-coloring.R

In jmw86069/jamba: Jam Base Methods

testthat::test_that("kable_coloring basics", {
   # simple test vectors
   new_colorSub <- list(
      column_A=nameVector(rainbow(5), LETTERS[1:5]),
      column_B=nameVector(rev(rainbow(5)), LETTERS[1:5]),
      column_C=circlize::colorRamp2(
         colors=c("peachpuff", "lightsalmon", "coral1",
            "firebrick2", "firebrick", "darkred"),
         breaks=0:5 * 1000))
   testdf <- data.frame(column_A=LETTERS[1:5],
      row.names=LETTERS[1:5],
      column_B=LETTERS[1:5],
      column_C=1:5 * 1000)
   kdf1 <- kable_coloring(testdf,
      colorSub=new_colorSub)
   testthat::expect_equal(
      c("kableExtra", "knitr_kable"),
      class(kdf1))
   kdf1str <- unlist(strsplit(as.character(kdf1), "\n"));
   # confirm presence of "<span style"
   testthat::expect_equal(
      any(grep("<span style", kdf1str)),
      TRUE)
   # confirm no presence of "&lt;span style"
   testthat::expect_equal(
      any(grep("&lt;span style", kdf1str)),
      FALSE)
   # confirm "1,000" uses
   # background-color: rgba(255, 160, 122, 255)
   test_pattern <- paste0("<span style.*[; ]background-color:[ ]*",
      "rgba[(255,[ ]*160,[ ]*122,[ ]*255[)].*>[ ]*1,000[ ]*</span>")
   testthat::expect_equal(
      any(grep(test_pattern, kdf1str)),
      TRUE)

})