R Under development (unstable) (2023-11-07 r85491 ucrt) -- "Unsuffered Consequences"
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> ###
> ### polyfit.R  +++ Test suite +++
> ###
> 
> 
> test.polyfit <- function(input, expected) {
+    output <- do.call(getFromNamespace("polyfit", "pracma"), input)
+    identical(all.equal(output,
+                        expected,
+                        tolerance=1e-7),
+              TRUE
+     )
+ }
> 
> polyfit.expected.n1  <- c(1, 0)
> polyfit.expected.n23 <- c(0, 1, 1, 1)
> polyfit.expected.n4  <- c(-1, 0, 7, 0, 0) / 6
> polyfit.expected.mat <- c(0, 1, -14, 65, -112, 60) / 12
> 
> test.polyfit(list(x=c(1,2,3), y=c(1,2,3)), polyfit.expected.n1)
[1] TRUE
> test.polyfit(list(x=c(-2,-1,0,1,2), y=c(3,1,1,3,7), n=3), polyfit.expected.n23)
[1] TRUE
> test.polyfit(list(x=c(-2,-1,0,1,2), y=c(2,1,0,1,2), n=4), polyfit.expected.n4)
[1] TRUE
> test.polyfit(list(x=matrix(1:6, nrow=2, ncol=3, byrow=TRUE),
+                   y=matrix(c(0,0,1,1,0,0), nrow=2, ncol=3, byrow=TRUE),
+                   n=5), polyfit.expected.mat)
[1] TRUE
> 
> 
> proc.time()
   user  system elapsed 
   0.15    0.03    0.17