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 2 observations --------------------------------------------
> 
> wrn <- 'row_f_var: 1 of the rows had less than 1 "x" observation.\nFirst occurrence at row 1'
> nacolumns <- c("df.num", "df.denom", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # 0 observations
> res <- capture(row_f_var(numeric(), 1:2))
> 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, 2))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> # 1 observations
> res <- capture(row_f_var(1, 1:2))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 1))
> stopifnot(all.equal(res$value$obs.y, 2))
> stopifnot(all.equal(res$value$obs.tot, 3))
> 
> # 1 observation + NA
> res <- capture(row_f_var(c(1, NA), 1:2))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs.x, 1))
> stopifnot(all.equal(res$value$obs.y, 2))
> stopifnot(all.equal(res$value$obs.tot, 3))
> 
> # only NAs
> res <- capture(row_f_var(c(NA_integer_, NA_integer_), 1:2))
> 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, 2))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> 
> #--- y has less than 2 observations --------------------------------------------
> 
> wrn <- 'row_f_var: 1 of the rows had less than 1 "y" observation.\nFirst occurrence at row 1'
> nacolumns <- c("df.num", "df.denom", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # 0 observations
> res <- capture(row_f_var(1:2, numeric()))
> 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, 0))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> # 1 observations
> res <- capture(row_f_var(1:2, 1))
> 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, 1))
> stopifnot(all.equal(res$value$obs.tot, 3))
> 
> # 1 observation + NA
> res <- capture(row_f_var(1:2, c(1, NA)))
> 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, 1))
> stopifnot(all.equal(res$value$obs.tot, 3))
> 
> # only NAs
> res <- capture(row_f_var(1:2, c(NA_integer_, NA_integer_)))
> 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, 0))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> 
> #--- x has 0 variance ----------------------------------------------------------
> 
> wrn <- 'row_f_var: 1 of the rows had zero variance in "x".\nFirst occurrence at row 1'
> 
> # constant values
> res <- capture(row_f_var(rep(1,5), 1:5))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.ratio, 0))
> 
> # constant values with NAs
> res <- capture(row_f_var(c(NA,rep(1,5),NA), 1:5))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.ratio, 0))
> 
> 
> #--- y has 0 variance ----------------------------------------------------------
> 
> wrn <- 'row_f_var: 1 of the rows had zero variance in "y".\nFirst occurrence at row 1'
> 
> # constant values
> res <- capture(row_f_var(1:5, rep(1,5)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.ratio, Inf))
> 
> # constant values with NAs
> res <- capture(row_f_var(1:5, c(NA,rep(1,5),NA)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.ratio, Inf))
> 
> 
> #--- both have 0 variance ------------------------------------------------------
> 
> wrnx <- 'row_f_var: 1 of the rows had zero variance in "x".\nFirst occurrence at row 1'
> wrny <- 'row_f_var: 1 of the rows had zero variance in "y".\nFirst occurrence at row 1'
> nacolumns <- c("df.num", "df.denom", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # x and y have constant values
> res <- capture(row_f_var(rep(1,5), rep(2,5)))
> stopifnot(all.equal(res$warning, c(wrnx, wrny)))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.ratio, NaN))
> 
> 
> proc.time()
   user  system elapsed 
   0.18    0.04    0.21