R Under development (unstable) (2023-10-04 r85267 ucrt) -- "Unsuffered Consequences"
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> library(matrixTests)
> source("utils/capture.r")
> 
> #--- x has less than 1 observation ---------------------------------------------
> 
> wrn <- 'row_wilcoxon_onesample: 1 of the rows had less than 1 "x" observation.\nFirst occurrence at row 1'
> nacolumns <- c("statistic", "pvalue")
> 
> # 0 observations
> res <- capture(row_wilcoxon_onesample(numeric()))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 0))
> 
> # only NA observations
> res <- capture(row_wilcoxon_onesample(c(NA_integer_,NA_integer_)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 0))
> 
> 
> #--- values equal to null are removed ------------------------------------------
> 
> wrn <- 'row_wilcoxon_onesample: 1 of the rows had observations with "x" equal "null" that were removed.\nFirst occurrence at row 1'
> 
> # a few x values equal to null
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), null=1, exact=FALSE))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$obs, 3))
> 
> # one x value equal to null plus NAs
> res <- capture(row_wilcoxon_onesample(c(NA,3,4,1), null=1, exact=FALSE))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$obs, 2))
> 
> wrn1 <- 'row_wilcoxon_onesample: 1 of the rows had observations with "x" equal "null" that were removed.\nFirst occurrence at row 1'
> wrn2 <- 'row_wilcoxon_onesample: 1 of the rows had zeroes: cannot compute exact p-values with zeroes.\nFirst occurrence at row 1'
> 
> # a few x values equal to null and exact is changed to FALSE
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), null=1, exact=TRUE))
> stopifnot(all.equal(res$warning, c(wrn1,wrn2)))
> stopifnot(all.equal(res$value$obs, 3))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> 
> #--- ties are present ----------------------------------------------------------
> 
> wrn <- 'row_wilcoxon_onesample: 1 of the rows had ties: cannot compute exact p-values with ties.\nFirst occurrence at row 1'
> 
> # warning when exact=TRUE
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), exact=TRUE))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$obs, 5))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> # no warning when exact=FALSE
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), exact=FALSE))
> stopifnot(all.equal(res$warning, NULL))
> stopifnot(all.equal(res$value$obs, 5))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> 
> #--- warning about zero values -------------------------------------------------
> 
> wrn1 <- 'row_wilcoxon_onesample: 1 of the rows had observations with "x" equal "null" that were removed.\nFirst occurrence at row 1'
> wrn2 <- 'row_wilcoxon_onesample: 1 of the rows had zeroes: cannot compute exact p-values with zeroes.\nFirst occurrence at row 1'
> 
> # warning when exact=TRUE
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), null=2, exact=TRUE))
> stopifnot(all.equal(res$warning, c(wrn1,wrn2)))
> stopifnot(all.equal(res$value$obs, 4))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> # no warning about ties when exact=FALSE
> res <- capture(row_wilcoxon_onesample(c(1,2,3,4,1), null=2, exact=FALSE))
> stopifnot(all.equal(res$warning, wrn1))
> stopifnot(all.equal(res$value$obs, 4))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> # if both ties and zeroes are presnet - only warn about zero
> res <- capture(row_wilcoxon_onesample(c(0,1,1,2,3), exact=TRUE))
> stopifnot(all.equal(res$warning, c(wrn1, wrn2)))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> 
> proc.time()
   user  system elapsed 
   0.15    0.04    0.18