#!/bin/bash
set -eu
set -o pipefail

: ${BIN:=..}
: ${EMU:=qemu-riscv64}

cmd=$BIN/flagtest
name=flagtest

fail=0
err() {
    echo "FAIL $name: $*"
    fail=1
}

flagtest() {
    "$EMU" "$cmd" "$@"
}

check_fail() {
    set +e
    out=$(flagtest "$@" 2>&1)
    if [[ "$?" -eq 0 ]]; then
        err "expected command to fail: $cmd $*"
    fi
}

check_ok() {
    set +e
    flagtest "$@"
    if [[ "$?" -ne 0 ]]; then
        err  "expected command to succeed: $cmd $*"
    fi
}

# invalid
check_fail -int      # missing arg
check_fail -str
check_fail -int x    # invalid int
check_fail -int abc
check_fail -int 0x10 # not yet supported
check_fail -int ""   # empty string is not a valid number
check_fail -int=
check_fail -xxx      # invalid flag
check_fail -bool=x   # invalid bool

# valid
check_ok
check_ok -bool
check_ok -bool=true
check_ok -bool=false
check_ok -int 0
check_ok -int=1
check_ok -int 987654321
check_ok -str=x
check_ok -str=
check_ok -str ""
check_ok -str -xxx # 2nd arg should be treated as a value not a flag
check_ok -str x -str y # duplicates are allowed
check_ok -int 1 -int 2
check_ok -bool -bool
check_ok X -bool Y # flags can be interspered with arguments
check_ok -bool -str x -int 1

# valid, but maybe it shouldn't be?
check_ok -bool=

# valid. and bool should not consume the "false"
# (but we don't have a way to check that just yet)
check_ok -bool false