jashkenas--coffeescript/test/option_parser.coffee

95 lines
2.4 KiB
CoffeeScript

# Option Parser
# -------------
# Ensure that the OptionParser handles arguments correctly.
return unless require?
{OptionParser} = require './../lib/coffeescript/optparse'
flags = [
['-r', '--required [DIR]', 'desc required']
['-o', '--optional', 'desc optional']
['-l', '--list [FILES*]', 'desc list']
]
banner = '''
banner text
'''
opt = new OptionParser flags, banner
test "basic arguments", ->
args = ['one', 'two', 'three', '-r', 'dir']
result = opt.parse args
arrayEq args, result.arguments
eq undefined, result.required
test "boolean and parameterised options", ->
result = opt.parse ['--optional', '-r', 'folder', 'one', 'two']
ok result.optional
eq 'folder', result.required
arrayEq ['one', 'two'], result.arguments
test "list options", ->
result = opt.parse ['-l', 'one.txt', '-l', 'two.txt', 'three']
arrayEq ['one.txt', 'two.txt'], result.list
arrayEq ['three'], result.arguments
test "-- and interesting combinations", ->
result = opt.parse ['-o','-r','a','-r','b','-o','--','-a','b','--c','d']
arrayEq ['-a', 'b', '--c', 'd'], result.arguments
ok result.optional
eq 'b', result.required
args = ['--','-o','a','-r','c','-o','--','-a','arg0','-b','arg1']
result = opt.parse args
eq undefined, result.optional
eq undefined, result.required
arrayEq args[1..], result.arguments
test "throw if multiple flags try to use the same short or long name", ->
throws -> new OptionParser [
['-r', '--required [DIR]', 'required']
['-r', '--long', 'switch']
]
throws -> new OptionParser [
['-a', '--append [STR]', 'append']
['-b', '--append', 'append with -b short opt']
]
throws -> new OptionParser [
['--just-long', 'desc']
['--just-long', 'another desc']
]
throws -> new OptionParser [
['-j', '--just-long', 'desc']
['--just-long', 'another desc']
]
throws -> new OptionParser [
['--just-long', 'desc']
['-j', '--just-long', 'another desc']
]
test "outputs expected help text", ->
expectedBanner = '''
banner text
-r, --required desc required
-o, --optional desc optional
-l, --list desc list
'''
ok opt.help() is expectedBanner
expected = [
''
' -r, --required desc required'
' -o, --optional desc optional'
' -l, --list desc list'
''
].join('\n')
ok new OptionParser(flags).help() is expected