Error: undeclared identifier: '|' when using | inside a runnableExamples:

[timotheecour]

when defined(case1):
  # Error: undeclared identifier: '|'
  proc bar[T](t:T): bool =
    runnableExamples:
      type Foo = int | float
    true
  echo bar(0)

when defined(case2):
  # ok
  proc bar(t:int): bool =
    runnableExamples:
      type Foo = int | float
    true
  echo bar(0)

when defined(case3):
  # Error: undeclared identifier: '|'
  proc bar(t:typedesc): bool =
    runnableExamples:
      type Foo = int | float
    true
  echo bar(int)

EDIT : fixed case3 test
EDIT: verified it all works!