`1.2` should be type "integer-like" (is "double")

[1] "`1.2` should be type \"integer-like\" (is \"double\")"

`NA_integer_` should not contain NAs, but does

[1] "`NA_integer_` should not contain NAs, but does"

`Inf` should be type "integer-like" (is "double")

[1] "`Inf` should be type \"integer-like\" (is \"double\")"

`-1` should contain only positive values, but has negatives

[1] "`-1` should contain only positive values, but has negatives"

`1` should contain only negative values, but has positives

[1] "`1` should contain only negative values, but has positives"

`0` should contain only "strictly positive" values, but has zeroes or negatives

[1] "`0` should contain only \"strictly positive\" values, but has zeroes or negatives"

`0` should contain only "strictly negative" values, but has zeroes or positives

[1] "`0` should contain only \"strictly negative\" values, but has zeroes or positives"

`c(-1:1, NA_integer_)` should not contain NAs, but does

[1] "`c(-1:1, NA_integer_)` should not contain NAs, but does"

`letters` should be type "integer-like" (is "character")

[1] "`letters` should be type \"integer-like\" (is \"character\")"

`-(1:3)` should contain only positive values, but has negatives

[1] "`-(1:3)` should contain only positive values, but has negatives"

`1:3` should contain only negative values, but has positives

[1] "`1:3` should contain only negative values, but has positives"

`0:3` should contain only "strictly positive" values, but has zeroes or negatives

[1] "`0:3` should contain only \"strictly positive\" values, but has zeroes or negatives"

`-(0:3)` should contain only "strictly negative" values, but has zeroes or positives

[1] "`-(0:3)` should contain only \"strictly negative\" values, but has zeroes or positives"

`-runif(1) - 1` should contain only positive values, but has negatives

[1] "`-runif(1) - 1` should contain only positive values, but has negatives"

`runif(1) + 1` should contain only negative values, but has positives

[1] "`runif(1) + 1` should contain only negative values, but has positives"