R Under development (unstable) (2023-10-04 r85267 ucrt) -- "Unsuffered Consequences"
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> library(matrixTests)
> source("utils/capture.r")
> 
> #--- hes less than 1 paired observation ----------------------------------------
> 
> wrn <- 'row_wilcoxon_paired: 1 of the rows had less than 1 paired observation.\nFirst occurrence at row 1'
> nacolumns <- c("statistic", "pvalue")
> 
> # no observations
> res <- capture(row_wilcoxon_paired(numeric(), numeric()))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 0))
> stopifnot(all.equal(res$value$obs.y, 0))
> stopifnot(all.equal(res$value$obs.paired, 0))
> 
> # x only has NAs
> res <- capture(row_wilcoxon_paired(c(NA, NaN, NA), 1:3))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 0))
> stopifnot(all.equal(res$value$obs.y, 3))
> stopifnot(all.equal(res$value$obs.paired, 0))
> 
> # y only has NAs
> res <- capture(row_wilcoxon_paired(1:3, c(NA, NaN, NA)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 3))
> stopifnot(all.equal(res$value$obs.y, 0))
> stopifnot(all.equal(res$value$obs.paired, 0))
> 
> # both x and y only NA observations
> res <- capture(row_wilcoxon_paired(c(NA,NaN,NA), c(NA, NA, NaN)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 0))
> stopifnot(all.equal(res$value$obs.y, 0))
> stopifnot(all.equal(res$value$obs.paired, 0))
> 
> # no common complete observations
> res <- capture(row_wilcoxon_paired(c(1, NA, 3, NA), c(NA, 2, NA, 4)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 2))
> stopifnot(all.equal(res$value$obs.y, 2))
> stopifnot(all.equal(res$value$obs.paired, 0))
> 
> 
> #--- ties are present ----------------------------------------------------------
> 
> wrn <- 'row_wilcoxon_paired: 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_paired(c(3,3,1,2), c(2,2,5,-2), exact=TRUE))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$obs.x, 4))
> stopifnot(all.equal(res$value$obs.y, 4))
> stopifnot(all.equal(res$value$obs.paired, 4))
> 
> # no warning when exact=FALSE
> res <- capture(row_wilcoxon_paired(c(3,3,1,2), c(2,2,5,-2), exact=FALSE))
> stopifnot(all.equal(res$warning, NULL))
> stopifnot(all.equal(res$value$obs.x, 4))
> stopifnot(all.equal(res$value$obs.y, 4))
> stopifnot(all.equal(res$value$obs.paired, 4))
> 
> 
> #--- warning about zero values -------------------------------------------------
> 
> wrn1 <- 'row_wilcoxon_paired: 1 of the rows had observations with "x-y" equal "null" that were removed.\nFirst occurrence at row 1'
> wrn2 <- 'row_wilcoxon_paired: 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_paired(1:4, c(0,2,4,3), null=1, exact=TRUE))
> stopifnot(all.equal(res$warning, c(wrn1, wrn2)))
> stopifnot(all.equal(res$value$obs.x, 4))
> stopifnot(all.equal(res$value$obs.y, 4))
> stopifnot(all.equal(res$value$obs.paired, 2))
> 
> # no warning when exact = FALSE
> res <- capture(row_wilcoxon_paired(1:4, c(0,2,4,3), null=1, exact=FALSE))
> stopifnot(all.equal(res$warning, wrn1))
> stopifnot(all.equal(res$value$obs.x, 4))
> stopifnot(all.equal(res$value$obs.y, 4))
> stopifnot(all.equal(res$value$obs.paired, 2))
> 
> # if both ties and zeroes are presnet - only warn about zero
> res <- capture(row_wilcoxon_paired(1:5, c(1,1,2,9,9), exact=TRUE))
> stopifnot(all.equal(res$warning, c(wrn1, wrn2)))
> stopifnot(all.equal(res$value$exact, FALSE))
> 
> 
> proc.time()
   user  system elapsed 
   0.14    0.10    0.20