#!/usr/bin/env python3

"""tests for picnic.py"""

import os

from subprocess import getoutput

prg = './picnic.py'

# --------------------------------------------------

def test_exists():

"""exists"""

assert os.path.isfile(prg)

# --------------------------------------------------

def test_usage():

"""usage"""

for flag in ['', '-h', '--help']:

out = getoutput(f'{prg} {flag}')

assert out.lower().startswith('usage')

# --------------------------------------------------

def test_one():

"""one item"""

out = getoutput(f'{prg} chips')

assert out.strip() == 'You are bringing chips.'

# --------------------------------------------------

def test_two():

"""two items"""

out = getoutput(f'{prg} soda "french fries"')

assert out.strip() == 'You are bringing soda and french fries.'

# --------------------------------------------------

def test_more_than_two():

"""more than two items"""

arg = '"potato chips" coleslaw cupcakes "French silk pie"'

out = getoutput(f'{prg} {arg}')

expected = ('You are bringing potato chips, coleslaw, '

'cupcakes, and French silk pie.')

assert out.strip() == expected

# --------------------------------------------------

def test_two_sorted():

"""two items sorted output"""

out = getoutput(f'{prg} -s soda candy')

assert out.strip() == 'You are bringing candy and soda.'

# --------------------------------------------------

def test_more_than_two_sorted():

"""more than two items sorted output"""

arg = 'bananas apples dates cherries'

out = getoutput(f'{prg} {arg} --sorted')

expected = ('You are bringing apples, bananas, cherries, and dates.')

assert out.strip() == expected