zsh/Test/A07control.ztst

# Test control commands for loops and functions.

%test

  fn3() { return $1; print Error }
  fn2() { fn3 $1 }
  fn() {
    print start $1
    fn2 $1
    return
    print Error
  }
  for val in -1 0 1 255; do
    fn $val; print $?
  done
0:Passing of return values back through functions
>start -1
>-1
>start 0
>0
>start 1
>1
>start 255
>255

  $ZTST_testdir/../Src/zsh -fc 'fn() {
    continue
  }
  fn'
1:continue outside loop
?fn:continue:1: not in while, until, select, or repeat loop

  for outer in 0 1 2 3; do
    print outer $outer
    for inner in 0 1 2 3; do
      print inner $inner
      continue $(( (outer & 1) ? 2 : 1 ))
      print error
    done
    print outer end
  done
0:continue with valid argument
>outer 0
>inner 0
>inner 1
>inner 2
>inner 3
>outer end
>outer 1
>inner 0
>outer 2
>inner 0
>inner 1
>inner 2
>inner 3
>outer end
>outer 3
>inner 0

  for outer in 0 1; do
    continue 0
    print -- $outer got here, status $?
  done
1:continue error case 0
?(eval):continue:2: argument is not positive: 0

  for outer in 0 1; do
    continue -1
    print -- $outer got here, status $?
  done
1:continue error case -1
?(eval):continue:2: argument is not positive: -1

  fn() {
    break
  }
  for outer in 0 1; do
    print $outer
    fn
  done
0:break from within function (this is a feature, I disovered)
>0

  for outer in 0 1 2 3; do
    print outer $outer
    for inner in 0 1 2 3; do
      print inner $inner
      break $(( (outer & 1) ? 2 : 1 ))
      print error
    done
    print outer end
  done
0:break with valid argument
>outer 0
>inner 0
>outer end
>outer 1
>inner 0

  for outer in 0 1; do
    break 0
    print -- $outer got here, status $?
  done
1:break error case 0
?(eval):break:2: argument is not positive: 0

  for outer in 0 1; do
    break -1
    print -- $outer got here, status $?
  done
1:break error case -1
?(eval):break:2: argument is not positive: -1

  false
  for x in; do
    print nothing executed
  done
0:Status 0 from for with explicit empty list

  set --
  false
  for x; do
    print nothing executed
  done
0:Status 0 from for with implicit empty list

  (exit 2)
  for x in 1 2; do
    print $?
  done
0:Status from previous command propagated into for loop
>2
>0

  false
  for x in $(echo 1 2; (exit 3)); do
    print $?
  done
0:Status from expansion propagated into for loop
>3
>0

  false
  for x in $(exit 4); do
    print not executed
  done
0:Status from expansion not propagated after unexecuted for loop
  
  false
  for x in NonExistentFilePrefix*(N); do
    print not executed, either
  done
0:Status from before for loop not propagated if empty after expansion

  for x in $(echo 1; false); do
  done
0:Status reset by empty list in for loop

  false
  for x in $(echo 1; false); do
    echo $?
    (exit 4)  
  done
4:Last status from loop body is kept even with other funny business going on
>1