#!/usr/bin/env python
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"""
Verify the help text when the AddOption() function is used (and when
it's not).
"""

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

import TestSCons

test = TestSCons.TestSCons()

test.write('SConstruct', """\
env = Environment()
AddOption('--force',
          action="store_true",
          help='force installation (overwrite existing files)')
AddOption('--prefix',
          nargs=1,
          dest='prefix',
          action='store',
          type='string',
          metavar='DIR',
          help='installation prefix')
""")

expected_lines = [
    'Local Options:',
    '  --force                     force installation (overwrite existing files)',
    '  --prefix=DIR                installation prefix',
]

test.run(arguments = '-h')
lines = test.stdout().split('\n')
missing = [e for e in expected_lines if e not in lines]

if missing:
    print("====== STDOUT:")
    print(test.stdout())
    print("====== Missing the following lines in the above AddOption() help output:")
    print("\n".join(missing))
    test.fail_test()

test.unlink('SConstruct')

test.run(arguments = '-h')
lines = test.stdout().split('\n')
unexpected = [e for e in expected_lines if e in lines]

if unexpected:
    print("====== STDOUT:")
    print(test.stdout())
    print("====== Unexpected lines in the above non-AddOption() help output:")
    print("\n".join(unexpected))
    test.fail_test()

test.pass_test()

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