R Under development (unstable) (2023-10-04 r85267 ucrt) -- "Unsuffered Consequences"
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> library(matrixTests)
> source("utils/capture.r")
> 
> #--- less than 3 observations --------------------------------------------------
> 
> wrn <- 'row_t_equalvar: 1 of the rows had less than 3 total observations.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # 0 observations
> res <- capture(row_t_equalvar(NA_integer_, NA_integer_))
> 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.tot, 0))
> 
> # 1 observation in each group
> res <- capture(row_t_equalvar(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, 1))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> # 2 observations in x and 0 in y
> res <- capture(row_t_equalvar(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))
> 
> # 0 observations in x and 2 in y
> res <- capture(row_t_equalvar(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))
> 
> # both have 2 observations but one is NA in each
> res <- capture(row_t_equalvar(c(1,NA), c(NA,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, 1))
> stopifnot(all.equal(res$value$obs.tot, 2))
> 
> 
> #--- one group has no observations ---------------------------------------------
> 
> wrn <- 'row_t_equalvar: 1 of the rows had zero "x" observations.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # no observations in x
> res <- capture(row_t_equalvar(numeric(), 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.tot, 3))
> 
> # only NA observations in x
> res <- capture(row_t_equalvar(c(NA_integer_, NA_integer_), 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.tot, 3))
> 
> 
> wrn <- 'row_t_equalvar: 1 of the rows had zero "y" observations.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # no observations in y
> res <- capture(row_t_equalvar(1:3, numeric()))
> 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.tot, 3))
> 
> # only NA observations in y
> res <- capture(row_t_equalvar(1:3, 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, 3))
> stopifnot(all.equal(res$value$obs.y, 0))
> stopifnot(all.equal(res$value$obs.tot, 3))
> 
> 
> #--- constant values -----------------------------------------------------------
> 
> wrn <- 'row_t_equalvar: 1 of the rows had essentially constant values.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # all values are the same
> res <- capture(row_t_equalvar(c(1,1,1,1), c(1,1,1,1)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.pooled, 0))
> 
> # all values are the equal within each group
> res <- capture(row_t_equalvar(c(1,1,1,1), c(2,2,2,2)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.pooled, 0))
> 
> # all values are the equal within each group after NAs
> res <- capture(row_t_equalvar(c(NA,1,1,1,1), c(2,2,2,2,NA)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$var.x, 0))
> stopifnot(all.equal(res$value$var.y, 0))
> stopifnot(all.equal(res$value$var.pooled, 0))
> 
> 
> proc.time()
   user  system elapsed 
   0.17    0.04    0.20