library(TAG)
test <- function(word1, word2)
{
tmp <- function(word1, word2) levenshtein_dist(word1, word2) == adist(word1, word2)[1,1]
t1 <- tmp(word1, word2)
t2 <- tmp(word2, word1)
t3 <- tmp(word1, word1)
if (!all(c(t1, t2, t3)))
{
if (!t1 && !t2)
stop("it's really broken")
if (!t1 || !t2)
stop("symmetry fails")
if (!t3)
stop("reflexivity fails")
}
else
invisible(TRUE)
}
test("kitten", "smitten")
test("gumbo", "gambol")
test("shave", "brave")
test("abcdef", "g")
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