name: "Compound commands: while"
cases:
  - name: "Single-line while loop"
    stdin: |
      while false; do echo 'In loop'; done

  - name: "break in while loop"
    stdin: |
      while true; do
        echo 'In loop'
        break
      done

  - name: "break 2 in nested loops"
    stdin: |
      while false; do
        echo 'Starting inner loop'
        while true; do
          echo 'In loop'
          break 2
        done
        echo 'Finished inner loop'
      done

  - name: "Arithmetic in while loop"
    stdin: |
      i=5
      while ((i > 0)); do echo $i; i=$((i - 1)); done

  - name: "Alternative arithmetic in while loop"
    stdin: |
      c=0
      limit=4
      while [ $c -lt $limit ]; do
        case "$c" in
        0)
          echo "0"
          ;;
        1)
          echo "1"
          ;;
        *)
          break
          ;;
        esac
        ((c++))
      done
      echo "Done"

  - name: "While with return in condition"
    stdin: |
      f() {
        while return 42; do
          echo "Body"
        done
        echo "After while"
      }
      f
      echo "Exit code: $?"

  - name: "While with exit in condition"
    stdin: |
      while exit 42; do
        echo "Body"
      done
      echo "After while"

  - name: "While with break in condition inside outer loop"
    stdin: |
      for i in 1 2 3; do
        echo "Outer iteration $i"
        while break; do
          echo "While body"
        done
        echo "After while"
      done
      echo "After outer loop"

  - name: "While with break 2 in condition inside outer loop"
    stdin: |
      for i in 1 2 3; do
        echo "Outer iteration $i"
        while break 2; do
          echo "While body"
        done
        echo "After while"
      done
      echo "After outer loop"

  - name: "While with continue 2 in condition inside outer loop"
    stdin: |
      for i in 1 2 3; do
        echo "Outer iteration $i"
        while continue 2; do
          echo "While body"
        done
        echo "After while"
      done
      echo "After outer loop"

  - name: "While with return in body"
    stdin: |
      f() {
        i=0
        while [ $i -lt 3 ]; do
          echo "Iteration $i"
          if [ $i -eq 1 ]; then
            return 42
          fi
          i=$((i + 1))
        done
        echo "After while"
      }
      f
      echo "Exit code: $?"

  - name: "While with exit in body"
    stdin: |
      i=0
      while [ $i -lt 3 ]; do
        echo "Iteration $i"
        if [ $i -eq 1 ]; then
          exit 42
        fi
        i=$((i + 1))
      done
      echo "After while"