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yargs-parser.js
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yargs-parser.js
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/* global beforeEach, describe, it */
require('chai').should()
var expect = require('chai').expect
var fs = require('fs')
var parser = require('../')
var path = require('path')
describe('yargs-parser', function () {
it('should parse a "short boolean"', function () {
var parse = parser([ '-b' ])
parse.should.have.property('b').to.be.ok.and.be.a('boolean')
parse.should.have.property('_').with.length(0)
})
it('should parse a "long boolean"', function () {
var parse = parser('--bool')
parse.should.have.property('bool', true)
parse.should.have.property('_').with.length(0)
})
it('should place bare options in the _ array', function () {
var parse = parser('foo bar baz')
parse.should.have.property('_').and.deep.equal(['foo', 'bar', 'baz'])
})
it('should set the value of the final option in a group to the next supplied value', function () {
var parse = parser(['-cats', 'meow'])
parse.should.have.property('c', true)
parse.should.have.property('a', true)
parse.should.have.property('t', true)
parse.should.have.property('s', 'meow')
parse.should.have.property('_').with.length(0)
})
it('should set the value of a single long option to the next supplied value', function () {
var parse = parser(['--pow', 'xixxle'])
parse.should.have.property('pow', 'xixxle')
parse.should.have.property('_').with.length(0)
})
it('should set the value of a single long option to the next supplied value, even if the value is empty', function () {
var parse = parser(['--pow', ''])
parse.should.have.property('pow', '')
parse.should.have.property('_').with.length(0)
})
it('should set the value of a single long option if an = was used', function () {
var parse = parser(['--pow=xixxle'])
parse.should.have.property('pow', 'xixxle')
parse.should.have.property('_').with.length(0)
})
it('should set the value of multiple long options to the next supplied values relative to each', function () {
var parse = parser(['--host', 'localhost', '--port', '555'])
parse.should.have.property('host', 'localhost')
parse.should.have.property('port', 555)
parse.should.have.property('_').with.length(0)
})
it('should set the value of multiple long options if = signs were used', function () {
var parse = parser(['--host=localhost', '--port=555'])
parse.should.have.property('host', 'localhost')
parse.should.have.property('port', 555)
parse.should.have.property('_').with.length(0)
})
it('should still set values appropriately if a mix of short, long, and grouped short options are specified', function () {
var parse = parser(['-h', 'localhost', '-fp', '555', 'script.js'])
parse.should.have.property('f', true)
parse.should.have.property('p', 555)
parse.should.have.property('h', 'localhost')
parse.should.have.property('_').and.deep.equal(['script.js'])
})
it('should still set values appropriately if a mix of short and long options are specified', function () {
var parse = parser(['-h', 'localhost', '--port', '555'])
parse.should.have.property('h', 'localhost')
parse.should.have.property('port', 555)
parse.should.have.property('_').with.length(0)
})
it('should explicitly set a boolean option to false if preceeded by "--no-"', function () {
var parse = parser(['--no-moo'])
parse.should.have.property('moo', false)
parse.should.have.property('_').with.length(0)
})
it('should still set values appropriately if we supply a comprehensive list of various types of options', function () {
var parse = parser([
'--name=meowmers', 'bare', '-cats', 'woo',
'-h', 'awesome', '--multi=quux',
'--key', 'value',
'-b', '--bool', '--no-meep', '--multi=baz',
'--', '--not-a-flag', '-', '-h', '-multi', '--', 'eek'
])
parse.should.have.property('c', true)
parse.should.have.property('a', true)
parse.should.have.property('t', true)
parse.should.have.property('s', 'woo')
parse.should.have.property('h', 'awesome')
parse.should.have.property('b', true)
parse.should.have.property('bool', true)
parse.should.have.property('key', 'value')
parse.should.have.property('multi').and.deep.equal(['quux', 'baz'])
parse.should.have.property('meep', false)
parse.should.have.property('name', 'meowmers')
parse.should.have.property('_').and.deep.equal(['bare', '--not-a-flag', '-', '-h', '-multi', '--', 'eek'])
})
it('should parse numbers appropriately', function () {
var argv = parser([
'-x', '1234',
'-y', '5.67',
'-z', '1e7',
'-w', '10f',
'--hex', '0xdeadbeef',
'789'
])
argv.should.have.property('x', 1234).and.be.a('number')
argv.should.have.property('y', 5.67).and.be.a('number')
argv.should.have.property('z', 1e7).and.be.a('number')
argv.should.have.property('w', '10f').and.be.a('string')
argv.should.have.property('hex', 0xdeadbeef).and.be.a('number')
argv.should.have.property('_').and.deep.equal([789])
argv._[0].should.be.a('number')
})
// addresses: https://github.com/yargs/yargs-parser/issues/33
it('should handle parsing negative #s', function () {
var argv = parser([
'-33', '-177', '33',
'--n1', '-33',
'-n', '-44',
'--n2=-55',
'--foo.bar', '-33',
'-o=-55',
'--bounds', '-180', '99', '-180', '90',
'--other', '-99', '-220'
], {
array: 'bounds',
narg: {'other': 2}
})
argv._.should.deep.equal([-33, -177, 33])
argv.n1.should.equal(-33)
argv.n.should.equal(-44)
argv.n2.should.equal(-55)
argv.foo.bar.should.equal(-33)
argv.o.should.equal(-55)
argv.bounds.should.deep.equal([-180, 99, -180, 90])
argv.other.should.deep.equal([-99, -220])
})
it('should set the value of a single short option to the next supplied value, even if the value is empty', function () {
var parse = parser(['-p', ''])
parse.should.have.property('p', '')
parse.should.have.property('_').with.length(0)
})
it('should not set the next value as the value of a short option if that option is explicitly defined as a boolean', function () {
var parse = parser([ '-t', 'moo' ], {
boolean: 't'
})
parse.should.have.property('t', true).and.be.a('boolean')
parse.should.have.property('_').and.deep.equal(['moo'])
})
it('should set boolean options values if the next value is "true" or "false"', function () {
var parse = parser(['--verbose', 'false', 'moo', '-t', 'true'], {
boolean: ['t', 'verbose'],
default: {
verbose: true
}
})
parse.should.have.property('verbose', false).and.be.a('boolean')
parse.should.have.property('t', true).and.be.a('boolean')
parse.should.have.property('_').and.deep.equal(['moo'])
})
it('should not set boolean options values if the next value only contains the words "true" or "false"', function () {
var parse = parser(['--verbose', 'aaatrueaaa', 'moo', '-t', 'aaafalseaaa'], {
boolean: ['t', 'verbose']
})
parse.should.have.property('verbose', true).and.be.a('boolean')
parse.should.have.property('t', true).and.be.a('boolean')
parse.should.have.property('_').and.deep.equal(['aaatrueaaa', 'moo', 'aaafalseaaa'])
})
it('should allow defining options as boolean in groups', function () {
var parse = parser([ '-x', '-z', 'one', 'two', 'three' ], {
boolean: ['x', 'y', 'z']
})
parse.should.have.property('x', true).and.be.a('boolean')
parse.should.have.property('y', false).and.be.a('boolean')
parse.should.have.property('z', true).and.be.a('boolean')
parse.should.have.property('_').and.deep.equal(['one', 'two', 'three'])
})
it('should preserve newlines in option values', function () {
var args = parser(['-s', 'X\nX'])
args.should.have.property('_').with.length(0)
args.should.have.property('s', 'X\nX')
// reproduce in bash:
// VALUE="new
// line"
// node program.js --s="$VALUE"
args = parser(['--s=X\nX'])
args.should.have.property('_').with.length(0)
args.should.have.property('s', 'X\nX')
})
it('should not convert numbers to type number if explicitly defined as strings', function () {
var s = parser([ '-s', '0001234' ], {
string: 's'
}).s
s.should.be.a('string').and.equal('0001234')
var x = parser([ '-x', '56' ], {
string: ['x']
}).x
x.should.be.a('string').and.equal('56')
})
it('should default numbers to undefined', function () {
var n = parser([ '-n' ], {
number: ['n']
}).n
expect(n).to.equal(undefined)
})
it('should default number to NaN if value is not a valid number', function () {
var n = parser([ '-n', 'string' ], {
number: ['n']
}).n
expect(n).to.deep.equal(NaN)
})
// Fixes: https://github.com/bcoe/yargs/issues/68
it('should parse flag arguments with no right-hand-value as strings, if defined as strings', function () {
var s = parser([ '-s' ], {
string: ['s']
}).s
s.should.be.a('string').and.equal('')
s = parser([ '-sf' ], {
string: ['s']
}).s
s.should.be.a('string').and.equal('')
s = parser([ '--string' ], {
string: ['string']
}).string
s.should.be.a('string').and.equal('')
})
it('should leave all non-hyphenated values as strings if _ is defined as a string', function () {
var s = parser([ ' ', ' ' ], {
string: ['_']
})._
s.should.have.length(2)
s[0].should.be.a('string').and.equal(' ')
s[1].should.be.a('string').and.equal(' ')
})
describe('normalize', function () {
it('should normalize redundant paths', function () {
var a = parser([ '-s', ['', 'tmp', '..', ''].join(path.sep) ], {
alias: {
s: ['save']
},
normalize: 's'
})
a.should.have.property('s', path.sep)
a.should.have.property('save', path.sep)
})
it('should normalize redundant paths when a value is later assigned', function () {
var a = parser(['-s'], {
normalize: ['s']
})
a.should.have.property('s', true)
a.s = ['', 'path', 'to', 'new', 'dir', '..', '..', ''].join(path.sep)
a.s.should.equal(['', 'path', 'to', ''].join(path.sep))
})
it('should normalize when key is also an array', function () {
var a = parser([ '-s', ['', 'tmp', '..', ''].join(path.sep), ['', 'path', 'to', 'new', 'dir', '..', '..', ''].join(path.sep) ], {
alias: {
s: ['save']
},
normalize: 's',
array: 's'
})
var expected = [path.sep, ['', 'path', 'to', ''].join(path.sep)]
a.should.have.property('s').and.deep.equal(expected)
a.should.have.property('save').and.deep.equal(expected)
})
})
describe('alias', function () {
it('should set alias value to the same value as the full option', function () {
var argv = parser([ '-f', '11', '--zoom', '55' ], {
alias: {
z: ['zoom']
}
})
argv.should.have.property('zoom', 55)
argv.should.have.property('z', 55)
argv.should.have.property('f', 11)
})
it('should allow multiple aliases to be specified', function () {
var argv = parser([ '-f', '11', '--zoom', '55' ], {
alias: {
z: ['zm', 'zoom']
}
})
argv.should.have.property('zoom', 55)
argv.should.have.property('z', 55)
argv.should.have.property('zm', 55)
argv.should.have.property('f', 11)
})
// regression, see https://github.com/chevex/yargs/issues/63
it('should not add the same key to argv multiple times, when creating camel-case aliases', function () {
var argv = parser(['--health-check=banana', '--second-key', 'apple', '-t=blarg'], {
alias: {
h: ['health-check'],
'second-key': ['s'],
'third-key': ['t']
},
default: {
h: 'apple',
'second-key': 'banana',
'third-key': 'third'
}
})
// before this fix, yargs failed parsing
// one but not all forms of an arg.
argv.secondKey.should.eql('apple')
argv.s.should.eql('apple')
argv['second-key'].should.eql('apple')
argv.healthCheck.should.eql('banana')
argv.h.should.eql('banana')
argv['health-check'].should.eql('banana')
argv.thirdKey.should.eql('blarg')
argv.t.should.eql('blarg')
argv['third-key'].should.eql('blarg')
})
it('should allow transitive aliases to be specified', function () {
var argv = parser([ '-f', '11', '--zoom', '55' ], {
alias: {
z: 'zm',
zm: 'zoom'
}
})
argv.should.have.property('zoom', 55)
argv.should.have.property('z', 55)
argv.should.have.property('zm', 55)
argv.should.have.property('f', 11)
})
it('should merge two lists of aliases if they collide', function () {
var argv = parser(['-f', '11', '--zoom', '55'], {
alias: {
z: 'zm',
zoom: 'zoop',
zm: 'zoom'
}
})
argv.should.have.property('zoom', 55)
argv.should.have.property('zoop', 55)
argv.should.have.property('z', 55)
argv.should.have.property('zm', 55)
argv.should.have.property('f', 11)
})
})
it('should assign data after forward slash to the option before the slash', function () {
var parse = parser(['-I/foo/bar/baz'])
parse.should.have.property('_').with.length(0)
parse.should.have.property('I', '/foo/bar/baz')
parse = parser(['-xyz/foo/bar/baz'])
parse.should.have.property('x', true)
parse.should.have.property('y', true)
parse.should.have.property('z', '/foo/bar/baz')
parse.should.have.property('_').with.length(0)
})
describe('config', function () {
var jsonPath = path.resolve(__dirname, './fixtures/config.json')
// See: https://github.com/chevex/yargs/issues/12
it('should load options and values from default config if specified', function () {
var argv = parser([ '--foo', 'bar' ], {
alias: {
z: 'zoom'
},
default: {
settings: jsonPath
},
config: 'settings'
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('zoom', 55)
argv.should.have.property('foo').and.deep.equal('bar')
})
it('should use value from config file, if argv value is using default value', function () {
var argv = parser([], {
alias: {
z: 'zoom'
},
config: ['settings'],
default: {
settings: jsonPath,
foo: 'banana'
}
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('zoom', 55)
argv.should.have.property('foo').and.deep.equal('baz')
})
it('should use value from config file, if argv key is a boolean', function () {
var argv = parser([], {
config: ['settings'],
default: {
settings: jsonPath
},
boolean: ['truthy']
})
argv.should.have.property('truthy', true)
})
it('should use value from cli, if cli overrides boolean argv key', function () {
var argv = parser(['--no-truthy'], {
config: ['settings'],
default: {
settings: jsonPath
},
boolean: ['truthy']
})
argv.should.have.property('truthy', false)
})
it('should use cli value, if cli value is set and both cli and default value match', function () {
var argv = parser(['--foo', 'banana'], {
alias: {
z: 'zoom'
},
config: ['settings'],
default: {
settings: jsonPath,
foo: 'banana'
}
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('zoom', 55)
argv.should.have.property('foo').and.deep.equal('banana')
})
it("should allow config to be set as flag in 'option'", function () {
var argv = parser([ '--settings', jsonPath, '--foo', 'bar' ], {
alias: {
z: 'zoom'
},
config: ['settings']
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('zoom', 55)
argv.should.have.property('foo').and.deep.equal('bar')
})
it('should load options and values from a JS file when config has .js extention', function () {
var jsPath = path.resolve(__dirname, './fixtures/settings.js')
var argv = parser([ '--settings', jsPath, '--foo', 'bar' ], {
config: ['settings']
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('foo', 'bar')
argv.should.have.property('calculate').and.be.a('function')
})
it('should raise an appropriate error if JSON file is not found', function () {
var argv = parser.detailed(['--settings', 'fake.json', '--foo', 'bar'], {
alias: {
z: 'zoom'
},
config: ['settings']
})
argv.error.message.should.equal('Invalid JSON config file: fake.json')
})
// see: https://github.com/bcoe/yargs/issues/172
it('should not raise an exception if config file is set as default argument value', function () {
var argv = parser.detailed([], {
default: {
config: 'foo.json'
},
config: ['config']
})
expect(argv.error).to.equal(null)
})
it('should load nested options from config file', function () {
var jsonPath = path.resolve(__dirname, './fixtures/nested_config.json')
var argv = parser(['--settings', jsonPath, '--nested.foo', 'bar'], {
config: ['settings']
})
argv.should.have.property('a', 'a')
argv.should.have.property('b', 'b')
argv.should.have.property('nested').and.deep.equal({
foo: 'bar',
bar: 'bar'
})
})
it('should use nested value from config file, if argv value is using default value', function () {
var jsonPath = path.resolve(__dirname, './fixtures/nested_config.json')
var argv = parser(['--settings', jsonPath], {
config: ['settings'],
default: {
'nested.foo': 'banana'
}
})
argv.should.have.property('a', 'a')
argv.should.have.property('b', 'b')
argv.should.have.property('nested').and.deep.equal({
foo: 'baz',
bar: 'bar'
})
})
it('allows a custom parsing function to be provided', function () {
var jsPath = path.resolve(__dirname, './fixtures/config.txt')
var argv = parser([ '--settings', jsPath, '--foo', 'bar' ], {
config: {
settings: function (configPath) {
// as an example, parse an environment
// variable style config:
// FOO=99
// BATMAN=grumpy
var config = {}
var txt = fs.readFileSync(configPath, 'utf-8')
txt.split(/\r?\n/).forEach(function (l) {
var kv = l.split('=')
config[kv[0].toLowerCase()] = kv[1]
})
return config
}
}
})
argv.batman.should.equal('grumpy')
argv.awesome.should.equal('banana')
argv.foo.should.equal('bar')
})
it('allows a custom parsing function to be provided as an alias', function () {
var jsPath = path.resolve(__dirname, './fixtures/config.json')
var argv = parser([ '--settings', jsPath, '--foo', 'bar' ], {
config: {
s: function (configPath) {
return JSON.parse(fs.readFileSync(configPath, 'utf-8'))
}
},
alias: {
s: ['settings']
}
})
argv.should.have.property('herp', 'derp')
argv.should.have.property('foo', 'bar')
})
it('outputs an error returned by the parsing function', function () {
var argv = parser.detailed(['--settings=./package.json'], {
config: {
settings: function (configPath) {
return Error('someone set us up the bomb')
}
}
})
argv.error.message.should.equal('someone set us up the bomb')
})
it('outputs an error if thrown by the parsing function', function () {
var argv = parser.detailed(['--settings=./package.json'], {
config: {
settings: function (configPath) {
throw Error('someone set us up the bomb')
}
}
})
argv.error.message.should.equal('someone set us up the bomb')
})
})
describe('config objects', function () {
it('should load options from config object', function () {
var argv = parser([ '--foo', 'bar' ], {
configObjects: [{
apple: 'apple',
banana: 42,
foo: 'baz'
}]
})
argv.should.have.property('apple', 'apple')
argv.should.have.property('banana', 42)
argv.should.have.property('foo', 'bar')
})
it('should use value from config object, if argv value is using default value', function () {
var argv = parser([], {
configObjects: [{
apple: 'apple',
banana: 42,
foo: 'baz'
}],
default: {
foo: 'banana'
}
})
argv.should.have.property('apple', 'apple')
argv.should.have.property('banana', 42)
argv.should.have.property('foo', 'baz')
})
it('should use value from config object to all aliases', function () {
var argv = parser([], {
configObjects: [{
apple: 'apple',
banana: 42,
foo: 'baz'
}],
alias: {
a: ['apple'],
banana: ['b']
}
})
argv.should.have.property('apple', 'apple')
argv.should.have.property('a', 'apple')
argv.should.have.property('banana', 42)
argv.should.have.property('b', 42)
argv.should.have.property('foo', 'baz')
})
it('should load nested options from config object', function () {
var argv = parser(['--nested.foo', 'bar'], {
configObjects: [{
a: 'a',
nested: {
foo: 'baz',
bar: 'bar'
},
b: 'b'
}]
})
argv.should.have.property('a', 'a')
argv.should.have.property('b', 'b')
argv.should.have.property('nested').and.deep.equal({
foo: 'bar',
bar: 'bar'
})
})
it('should use nested value from config object, if argv value is using default value', function () {
var argv = parser([], {
configObjects: [{
a: 'a',
nested: {
foo: 'baz',
bar: 'bar'
},
b: 'b'
}],
default: {
'nested.foo': 'banana'
}
})
argv.should.have.property('a', 'a')
argv.should.have.property('b', 'b')
argv.should.have.property('nested').and.deep.equal({
foo: 'baz',
bar: 'bar'
})
})
})
describe('dot notation', function () {
it('should allow object graph traversal via dot notation', function () {
var argv = parser([
'--foo.bar', '3', '--foo.baz', '4',
'--foo.quux.quibble', '5', '--foo.quux.o_O',
'--beep.boop'
])
argv.should.have.property('foo').and.deep.equal({
bar: 3,
baz: 4,
quux: {
quibble: 5,
o_O: true
}
})
argv.should.have.property('beep').and.deep.equal({ boop: true })
})
it('should apply defaults to dot notation arguments', function () {
var argv = parser([], {
default: {
'foo.bar': 99
}
})
argv.foo.bar.should.eql(99)
})
// see #279
it('should allow default to be overridden when an alias is provided', function () {
var argv = parser(['--foo.bar', '200'], {
default: {
'foo.bar': 99
}
})
argv.foo.bar.should.eql(200)
})
// see #279
it('should also override alias', function () {
var argv = parser(['--foo.bar', '200'], {
alias: {
'foo.bar': ['f']
},
default: {
'foo.bar': 99
}
})
argv.f.should.eql(200)
})
// see #279
it('should not set an undefined dot notation key', function () {
var argv = parser(['--foo.bar', '200'], {
default: {
'foo.bar': 99
},
alias: {
'foo.bar': ['f']
}
})
;('foo.bar' in argv).should.equal(false)
})
it('should respect .string() for dot notation arguments', function () {
var argv = parser(['--foo.bar', '99', '--bar.foo=99'], {
string: ['foo.bar']
})
argv.foo.bar.should.eql('99')
argv.bar.foo.should.eql(99)
})
it('should populate aliases when dot notation is used', function () {
var argv = parser(['--foo.bar', '99'], {
alias: {
foo: ['f']
}
})
argv.f.bar.should.eql(99)
})
it('should populate aliases when nested dot notation is used', function () {
var argv = parser(['--foo.bar.snuh', '99', '--foo.apple', '33', '--foo.bar.cool', '11'], {
alias: {
foo: ['f']
}
})
argv.f.bar.snuh.should.eql(99)
argv.foo.bar.snuh.should.eql(99)
argv.f.apple.should.eql(33)
argv.foo.apple.should.eql(33)
argv.f.bar.cool.should.eql(11)
argv.foo.bar.cool.should.eql(11)
})
it("should allow flags to use dot notation, when seperated by '='", function () {
var argv = parser(['-f.foo=99'])
argv.f.foo.should.eql(99)
})
it("should allow flags to use dot notation, when seperated by ' '", function () {
var argv = parser(['-f.foo', '99'])
argv.f.foo.should.eql(99)
})
it('should allow flags to use dot notation when no right-hand-side is given', function () {
var argv = parser(['-f.foo', '99', '-f.bar'])
argv.f.foo.should.eql(99)
argv.f.bar.should.eql(true)
})
})
it('should set boolean and alias using explicit true', function () {
var aliased = [ '-h', 'true' ]
var aliasedArgv = parser(aliased, {
boolean: ['h'],
alias: {
h: ['herp']
}
})
aliasedArgv.should.have.property('herp', true)
aliasedArgv.should.have.property('h', true)
aliasedArgv.should.have.property('_').with.length(0)
})
// regression, see https://github.com/substack/node-optimist/issues/71
it('should set boolean and --x=true', function () {
var parsed = parser(['--boool', '--other=true'], {
boolean: ['boool']
})
parsed.should.have.property('boool', true)
parsed.should.have.property('other', 'true')
parsed = parser(['--boool', '--other=false'], {
boolean: ['boool']
})
parsed.should.have.property('boool', true)
parsed.should.have.property('other', 'false')
})
// regression, see https://github.com/chevex/yargs/issues/66
it('should set boolean options values if next value is "true" or "false" with = as separator', function () {
var argv = parser(['--bool=false'], {
boolean: ['b'],
alias: {
b: ['bool']
},
default: {
b: true
}
})
argv.bool.should.eql(false)
})
describe('short options', function () {
it('should set the value of multiple single short options to the next supplied values relative to each', function () {
var parse = parser(['-h', 'localhost', '-p', '555'])
parse.should.have.property('h', 'localhost')
parse.should.have.property('p', 555)
parse.should.have.property('_').with.length(0)
})
it('should set the value of a single short option to the next supplied value', function () {
var parse = parser(['-h', 'localhost'])
parse.should.have.property('h', 'localhost')
parse.should.have.property('_').with.length(0)
})
it('should expand grouped short options to a hash with a key for each', function () {
var parse = parser(['-cats'])
parse.should.have.property('c', true)
parse.should.have.property('a', true)
parse.should.have.property('t', true)
parse.should.have.property('s', true)
parse.should.have.property('_').with.length(0)
})
it('should set n to the numeric value 123', function () {
var argv = parser([ '-n123' ])
argv.should.have.property('n', 123)
})
it('should set n to the numeric value 123, with n at the end of a group', function () {
var argv = parser([ '-ab5n123' ])
argv.should.have.property('a', true)
argv.should.have.property('b', true)
argv.should.have.property('5', true)
argv.should.have.property('n', 123)
argv.should.have.property('_').with.length(0)
})
it('should set n to the numeric value 123, with = as separator', function () {
var argv = parser([ '-n=123' ])
argv.should.have.property('n', 123)
})
it('should set n to the numeric value 123, with n at the end of a group and = as separator', function () {
var argv = parser([ '-ab5n=123' ])
argv.should.have.property('a', true)
argv.should.have.property('b', true)
argv.should.have.property('5', true)
argv.should.have.property('n', 123)
argv.should.have.property('_').with.length(0)
})
})
describe('whitespace', function () {
it('should be whitespace', function () {
var argv = parser([ '-x', '\t' ])
argv.should.have.property('x', '\t')
})
})
describe('boolean modifier function', function () {
it('should prevent yargs from sucking in the next option as the value of the first option', function () {
// Arrange & Act
var result = parser(['-b', '123'], {
boolean: ['b']
})
// Assert
result.should.have.property('b').that.is.a('boolean').and.is.true
result.should.have.property('_').and.deep.equal([123])
})
})
describe('defaults', function () {
function checkNoArgs (opts, hasAlias) {
it('should set defaults if no args', function () {
var result = parser([], opts)
result.should.have.property('flag', true)
if (hasAlias) {
result.should.have.property('f', true)
}
})
}
function checkExtraArg (opts, hasAlias) {
it('should set defaults if one extra arg', function () {
var result = parser(['extra'], opts)
result.should.have.property('flag', true)
result.should.have.property('_').and.deep.equal(['extra'])
if (hasAlias) {
result.should.have.property('f', true)
}
})
}
function checkStringArg (opts, hasAlias) {
it('should set defaults even if arg looks like a string', function () {
var result = parser([ '--flag', 'extra' ], opts)
result.should.have.property('flag', true)
result.should.have.property('_').and.deep.equal(['extra'])
if (hasAlias) {
result.should.have.property('f', true)
}
})
}
describe('for options with aliases', function () {
var opts = {
alias: {
flag: ['f']
},
default: {
flag: true
}
}
checkNoArgs(opts, true)
checkExtraArg(opts, true)
})
describe('for typed options without aliases', function () {
var opts = {
boolean: ['flag'],