name: "Builtins: eval"
cases:
  - name: "Basic eval usage"
    stdin: |
      eval 'echo 1 + 1 == $((1 + 1))'

  - name: "eval with return in function"
    stdin: |
      f() {
        eval 'return 42'
        echo "Should not reach here"
      }
      f
      echo "Exit code: $?"

  - name: "eval with exit"
    stdin: |
      eval 'exit 42'
      echo "After eval'd exit"

  - name: "eval with break in loop"
    stdin: |
      for i in 1 2 3; do
        eval 'break'
        echo "After eval'd break"
      done
      echo "After loop"

  - name: "eval with continue in loop"
    stdin: |
      for i in 1 2 3; do
        echo "Iteration $i"
        eval 'continue'
        echo "After eval'd continue"
      done
      echo "After loop"

  - name: "eval with nested break levels"
    stdin: |
      for i in 1 2; do
        for j in a b c; do
          eval 'break 2'
          echo "After eval'd break (inner loop)"
        done
        echo "After eval'd break (outer loop)"
      done
      echo "After outer loop"

  - name: "Eval of code with syntax error"
    known_failure: true # TODO(eval): a tokenizer error in eval'd code aborts the script instead of returning 2
    ignore_stderr: true
    stdin: |
      eval 'echo "a'
      echo "rc=$?"

  - name: "eval with a syntax error returns 2"
    known_failure: true # TODO(eval): a syntax error in eval's input ends a brush script
    ignore_stderr: true
    stdin: |
      eval 'if'
      echo "after eval: $?"

  - name: "eval with an unset variable under set -u ends the shell"
    ignore_stderr: true
    stdin: |
      set -u
      eval 'echo $nope'; echo "rc=$?"
      echo next

  - name: "eval with ${x?} on an unset variable ends the shell"
    ignore_stderr: true
    stdin: |
      eval 'echo ${nope?boom}'; echo "rc=$?"
      echo next

  - name: "command eval with an unset variable under set -u ends the shell"
    ignore_stderr: true
    stdin: |
      set -u
      command eval 'echo $nope'; echo "rc=$?"
      echo next

  - name: "builtin eval with an unset variable under set -u ends the shell"
    ignore_stderr: true
    stdin: |
      set -u
      builtin eval 'echo $nope'; echo "rc=$?"
      echo next

  - name: "eval passes the evaluated command's options through"
    stdin: |
      eval -- echo a
      eval echo -- b
      eval echo -n c; echo
      eval 'echo --help'

  - name: "eval rejects an unknown option with status 2"
    stdin: |
      eval -x 2>/dev/null; echo "rc=$?"