tests/testthat/_snaps/io.md

In processx: Execute and Control System Processes

Output and error are discarded by default

Code
  p$read_output_lines(n = 1)
Condition
  Error:
  ! ! stdout is not a pipe.
Code
  p$read_all_output_lines()
Condition
  Error:
  ! ! stdout is not a pipe.
Code
  p$read_all_output()
Condition
  Error:
  ! ! stdout is not a pipe.
Code
  p$read_error_lines(n = 1)
Condition
  Error:
  ! ! stderr is not a pipe.
Code
  p$read_all_error_lines()
Condition
  Error:
  ! ! stderr is not a pipe.
Code
  p$read_all_error()
Condition
  Error:
  ! ! stderr is not a pipe.

same pipe

Code
  p$read_all_error_lines()
Condition
  Error:
  ! ! stderr is not a pipe.

same file

Code
  p$read_all_output_lines()
Condition
  Error:
  ! ! stdout is not a pipe.

Code
  p$read_all_error_lines()
Condition
  Error:
  ! ! stderr is not a pipe.

same NULL, for completeness

Code
  p$read_all_output_lines()
Condition
  Error:
  ! ! stdout is not a pipe.

Code
  p$read_all_error_lines()
Condition
  Error:
  ! ! stderr is not a pipe.

processx documentation built on April 1, 2026, 5:06 p.m.