mock_output_sequence: Mock a sequence of output from a function

In r-lib/testthat: Unit Testing for R

Mock a sequence of output from a function

Description

Specify multiple return values for mocking

Usage

mock_output_sequence(..., recycle = FALSE)

Arguments

...	<dynamic-dots> Values to return in sequence.
recycle	whether to recycle. If TRUE, once all values have been returned, they will be returned again in sequence.

Value

A function that you can use within local_mocked_bindings() and with_mocked_bindings()

See Also

Other mocking: local_mocked_bindings()

Examples

# inside local_mocked_bindings()
## Not run: 
local_mocked_bindings(readline = mock_output_sequence("3", "This is a note", "n"))

## End(Not run)
# for understanding
mocked_sequence <- mock_output_sequence("3", "This is a note", "n")
mocked_sequence()
mocked_sequence()
mocked_sequence()
try(mocked_sequence())
recycled_mocked_sequence <- mock_output_sequence(
  "3", "This is a note", "n",
  recycle = TRUE
)
recycled_mocked_sequence()
recycled_mocked_sequence()
recycled_mocked_sequence()
recycled_mocked_sequence()

r-lib/testthat documentation built on April 5, 2025, 9:11 p.m.