var Options = require('options')
, expect = require('expect.js');
describe('Options', function() {
describe('#ctor', function() {
it('initializes options', function() {
var option = new Options({a: true, b: false});
expect(option.value.a).to.equal(true);
expect(option.value.b).to.equal(false);
})
})
describe('#merge', function() {
it('merges options from another object', function() {
var option = new Options({a: true, b: false});
option.merge({b: true});
expect(option.value.a).to.equal(true);
expect(option.value.b).to.equal(true);
})
it('does nothing when arguments are undefined', function() {
var option = new Options({a: true, b: false});
option.merge(undefined);
expect(option.value.a).to.equal(true);
expect(option.value.b).to.equal(false);
})
it('cannot set values that werent already there', function() {
var option = new Options({a: true, b: false});
option.merge({c: true});
expect(typeof option.value.c).to.equal('undefined');
})
it('can require certain options to be defined', function() {
var option = new Options({a: true, b: false, c: 3});
var caughtException = false;
try {
option.merge({}, ['a', 'b', 'c']);
}
catch (e) {
caughtException = e.toString() == 'Error: options a, b and c must be defined';
}
expect(caughtException).to.equal(true);
})
it('can require certain options to be defined, when options are undefined', function() {
var option = new Options({a: true, b: false, c: 3});
var caughtException = false;
try {
option.merge(undefined, ['a', 'b', 'c']);
}
catch (e) {
caughtException = e.toString() == 'Error: options a, b and c must be defined';
}
expect(caughtException).to.equal(true);
})
it('returns "this"', function() {
var option = new Options({a: true, b: false, c: 3});
expect(option.merge()).to.equal(option);
})
})
describe('#copy', function() {
it('returns a new object with the indicated options', function() {
var option = new Options({a: true, b: false, c: 3});
var obj = option.copy(['a', 'c']);
expect(obj.a).to.equal(true);
expect(obj.c).to.equal(3);
expect(typeof obj.b).to.equal('undefined');
})
})
describe('#value', function() {
it('can be enumerated', function() {
var option = new Options({a: true, b: false});
expect(Object.keys(option.value).length).to.equal(2);
})
it('can not be used to set values', function() {
var option = new Options({a: true, b: false});
option.value.b = true;
expect(option.value.b).to.equal(false);
})
it('can not be used to add values', function() {
var option = new Options({a: true, b: false});
option.value.c = 3;
expect(typeof option.value.c).to.equal('undefined');
})
})
describe('#read', function() {
it('reads and merges config from a file', function() {
var option = new Options({a: true, b: true});
option.read(__dirname + '/fixtures/test.conf');
expect(option.value.a).to.equal('foobar');
expect(option.value.b).to.equal(false);
})
it('asynchronously reads and merges config from a file when a callback is passed', function(done) {
var option = new Options({a: true, b: true});
option.read(__dirname + '/fixtures/test.conf', function(error) {
expect(option.value.a).to.equal('foobar');
expect(option.value.b).to.equal(false);
done();
});
})
})
describe('#reset', function() {
it('resets options to defaults', function() {
var option = new Options({a: true, b: false});
option.merge({b: true});
expect(option.value.b).to.equal(true);
option.reset();
expect(option.value.b).to.equal(false);
})
})
it('is immutable', function() {
var option = new Options({a: true, b: false});
option.foo = 2;
expect(typeof option.foo).to.equal('undefined');
})
})
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