Skip to content

Do you expect a vector containing these values?

Source: R/expect-setequal.R
expect_setequal.Rd

  • expect_setequal(x, y) tests that every element of x occurs in y, and that every element of y occurs in x.

  • expect_contains(x, y) tests that x contains every element of y (i.e. y is a subset of x).

  • expect_in(x, y) tests every element of x is in y (i.e. x is a subset of y).

  • expect_mapequal(x, y) treats lists as if they are mappings between names and values. Concretely, this drops NULLs in both objects and sorts named components.

Usage

expect_setequal(object, expected)

expect_mapequal(object, expected)

expect_contains(object, expected)

expect_in(object, expected)

Arguments

object, expected

Computation and value to compare it to.

Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.

Details

Note that expect_setequal() ignores names, and you will be warned if both object and expected have them.

Examples

expect_setequal(letters, rev(letters))
show_failure(expect_setequal(letters[-1], rev(letters)))
#> Failed expectation:
#> letters[-1] (`actual`) and rev(letters) (`expected`) don't have the same values.
#> * Only in `expected`: "a"
#> 

x <- list(b = 2, a = 1)
expect_mapequal(x, list(a = 1, b = 2))
show_failure(expect_mapequal(x, list(a = 1)))
#> Failed expectation:
#> `x` (`actual`) is not equal to list(a = 1) (`expected`).
#> 
#> `actual` is length 2
#> `expected` is length 1
#> 
#> `names(actual)`:   "a" "b"
#> `names(expected)`: "a"    
#> 
#> `actual$b` is a double vector (2)
#> `expected$b` is absent
show_failure(expect_mapequal(x, list(a = 1, b = "x")))
#> Failed expectation:
#> `x` (`actual`) is not equal to list(a = 1, b = "x") (`expected`).
#> 
#> `actual$b` is a double vector (2)
#> `expected$b` is a character vector ('x')
show_failure(expect_mapequal(x, list(a = 1, b = 2, c = 3)))
#> Failed expectation:
#> `x` (`actual`) is not equal to list(a = 1, b = 2, c = 3) (`expected`).
#> 
#> `actual` is length 2
#> `expected` is length 3
#> 
#> `names(actual)`:   "a" "b"    
#> `names(expected)`: "a" "b" "c"
#> 
#> `actual$c` is absent
#> `expected$c` is a double vector (3)