abstract(array(1:8, c(2, 2, 2), dimnames = list(letters[1:2], 
    LETTERS[1:2], NULL)))

list.arr <- replicate(8, list(1), simplify = FALSE)

`iris[1:10, 1:3]` should have 5 columns (has 3)

[1] "`iris[1:10, 1:3]` should have 5 columns (has 3)"

alike(abstract(iris), transform(iris, Species = as.character(Species)))

`transform(iris, Species = as.character(Species))$Species` should be class "factor" (is "character")

[1] "`transform(iris, Species = as.character(Species))$Species` should be class \"factor\" (is \"character\")"

y <- ts(runif(12), start = 1970, frequency = 12)

Argument `what` must be character with all values in c("start", "end", "frequency")

Error in abstract.ts(y, "boom") : 
  Argument `what` must be character with all values in c("start", "end", "frequency")
In addition: Warning messages:
1: In cbind(integer(2L), seq.diffs) :
  number of rows of result is not a multiple of vector length (arg 1)
2: In cbind(integer(2L), seq.diffs) :
  number of rows of result is not a multiple of vector length (arg 1)

Argument `x` must have a "tsp" attribute that is numeric(3L)

Error in vetr:::abstract.ts(1:12) : 
  Argument `x` must have a "tsp" attribute that is numeric(3L)

An object of class "unitizerGlobalState"
Slot "search.path":
NULL

Slot "options":
NULL

Slot "working.directory":
NULL

Slot "random.seed":
NULL

Slot "namespaces":
NULL

Could not coerce `obj` to list; see previous error.

Error in as.list.default(obj) : 
  no method for coercing this S4 class to a vector
Error in nullify.default(obj, 1) : 
  Could not coerce `obj` to list; see previous error.

df1 <- data.frame(x = runif(10), y = runif(10), z = runif(10))

df2 <- data.frame(a = runif(5), b = runif(5), c = runif(5))

`mdl3$terms[[3]][[3]][[1]]` should be a call to `poly` (is a call to `log`)

[1] "`mdl3$terms[[3]][[3]][[1]]` should be a call to `poly` (is a call to `log`)"

`mdl4$terms[[3]]` should be a call to `+` (is "symbol")

[1] "`mdl4$terms[[3]]` should be a call to `+` (is \"symbol\")"

Argument `index` must be a valid subsetting index and if numeric must be greater than or equal to one.