name: "Builtins: let"
cases:
  - name: "Basic let usage"
    stdin: |
      let 0; echo "0 => $?"
      let 1; echo "1 => $?"

      let 0==0; echo "0==0 => $?"
      let 0!=0; echo "0!=0 => $?"

      let 1 0; echo "1 0 => $?"
      let 0 1; echo "0 1 => $?"

  - name: "let with assignment"
    stdin: |
      let x=10; echo "x=10 => $?; x==${x}"

  - name: "let assignment through nameref"
    known_failure: true
    stdin: |
      target=0
      declare -n ref=target
      let ref=42
      echo "target: $target"
      let ref+=8
      echo "target: $target"
      let ref++
      echo "target: $target"