Asserting output to be a multiline value?

[velle]

I want to test a function that prints a few lines to stdout, e.g.

$ foo.sh
line1
line2
line3

Here is what I have tried:

@test "foo.sh 01" {
  run foo.sh
  assert_output "line1\nline2\nline3"
}

but this is the result:

   -- output differs --
   expected (1 lines):
     line1\nline2\nline3
   actual (3 lines):
     line1
     line2
     line3
   --

How do I achieve this?

[martin-schulze-vireso]

This is more of a bash problem. Try:

assert_output $'line1\nline2...'