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_t_onesample: 1 of the rows had less than 2 "x" observations.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # 0 observations
> res <- capture(row_t_onesample(numeric()))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 0))
> 
> # 1 observation
> res <- capture(row_t_onesample(1))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 1))
> 
> # 1 observations with NAs
> res <- capture(row_t_onesample(c(NA,1,NA)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 1))
> 
> 
> #--- all values are constant ---------------------------------------------------
> 
> wrn <- 'row_t_onesample: 1 of the rows had essentially constant values.\nFirst occurrence at row 1'
> nacolumns <- c("stderr", "df", "statistic", "pvalue", "conf.low", "conf.high")
> 
> # 2 equal observations
> res <- capture(row_t_onesample(c(1,1)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 2))
> stopifnot(all.equal(res$value$var, 0))
> 
> # 3 equal observations and some NAs
> res <- capture(row_t_onesample(c(NA,2,2,2,NA)))
> stopifnot(all.equal(res$warning, wrn))
> stopifnot(all(is.na(res$value[,nacolumns])))
> stopifnot(all.equal(res$value$obs, 3))
> stopifnot(all.equal(res$value$var, 0))
> 
> 
> proc.time()
   user  system elapsed 
   0.17    0.03    0.20