testthat (version 2.3.0)

expect_silent: Expectation: is the code silent?

Description

Checks that the code produces no output, messages, or warnings.

Usage

expect_silent(object)

Arguments

object

Object to test.

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

Value

The first argument, invisibly.

See Also

Other expectations: comparison-expectations, equality-expectations, expect_error, expect_length, expect_match, expect_message, expect_named, expect_null, expect_output, inheritance-expectations, logical-expectations

Examples

# NOT RUN {
expect_silent("123")

f <- function() {
  message("Hi!")
  warning("Hey!!")
  print("OY!!!")
}
# }
# NOT RUN {
expect_silent(f())
# }