# Test the `argparse` builtin.

##########
# Start by verifying a bunch of error conditions.

echo '# No args is an error' >&2
argparse

echo '# Missing -- is an error' >&2
argparse h/help

echo '# Flags but no option specs is an error' >&2
argparse -s -- hello

echo '# Invalid option specs' >&2
argparse h-
argparse +help
argparse h/help:
argparse h-help::
argparse h-help=x

echo '# --max-args and --min-args work' >&2
begin
    argparse --name min-max --min-args 1 h/help --
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1 arg2
    argparse --name min-max --min-args 1 --max-args 3 h/help -- --help arg1 arg2 arg3
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1 arg2 -h arg3 arg4
    argparse --name min-max --max-args 1 h/help --
    argparse --name min-max --max-args 1 h/help -- arg1
    argparse --name min-max --max-args 1 h/help -- arg1 arg2
end

echo '# Invalid "#-val" spec' >&2
argparse '#-val=' -- abc -x def

echo '# Invalid arg in the face of a "#-val" spec' >&2
argparse '#-val' -- abc -x def

##########
# Now verify that validly formed invocations work as expected.

echo '# No args'
argparse h/help --

echo '# One arg and no matching flags'
begin
    argparse h/help -- help
    set -l
    show $argv
end

echo '# Five args with two matching a flag'
begin
    argparse h/help -- help --help me -h 'a lot more'
    set -l
    show $argv
end

echo '# Required, optional, and multiple flags'
begin
    argparse 'h/help' 'a/abc=' 'd/def=?' 'g/ghk=+' -- help --help me --ghk=g1 --abc=ABC --ghk g2 --d -g g3
    set -l
    show $argv
end

echo '# --stop-nonopt works'
begin
    argparse --stop-nonopt 'h/help' 'a/abc=' -- -a A1 -h --abc A2 non-opt 'second non-opt' --help
    set -l
    show $argv
end

echo '# A "#-val" spec works'
argparse '#-val' -- abc -123 def
set -l
argparse 'v/verbose' '#-val' 't/token=' -- -123 a1 --token woohoo --234 -v a2 --verbose
set -l