mecano/test/merge.coffee

Common functions for system deployment.

should = require 'should'
misc = if process.env.MECANO_COV then require '../lib-cov/misc' else require '../lib/misc'

describe 'merge', ->

  it 'should enrich 1st object', ->
    obj1 = { a_key: 'a value', b_key: 'b value'}
    obj2 = { b_key: 'new b value'}
    result = misc.merge obj1, obj2
    result.should.eql obj1
    obj1.b_key.should.eql 'new b value'

  it 'should create a new object', ->
    obj1 = { a_key: 'a value', b_key: 'b value'}
    obj2 = { b_key: 'new b value'}
    result = misc.merge {}, obj1, obj2
    result.b_key.should.eql 'new b value'

  it 'should overwrite arrays', ->
    obj1 = { a_key: 'a value', b_key: ['b value']}
    obj2 = { b_key: ['new b value']}
    misc.merge obj1, obj2
    obj1.b_key.should.eql ['new b value']

  it 'should give priority to the last objects', ->
    obj1 = { b_key: 'b value'}
    obj2 = { a_key: 'a value', b_key: 'new b value'}
    misc.merge true, obj1, obj2
    obj1.a_key.should.eql 'a value'
    obj1.b_key.should.eql 'b value'

  it 'should avoid infinite loop', ->
    obj1 = { a_key: { b_key : 'b value' } }
    obj2 = obj1
    misc.merge true, obj1, obj2
    obj1.a_key.b_key.should.eql 'b value'

  it 'should overwrite regexp value', ->
    obj1 = { reg_key: /.*/mg, a_key: { regkey_key : /.*/ } }
    obj2 = { a_key: { regkey_key : /^.*$/ } }
    res = misc.merge {}, obj1, obj2
    res.should.eql { reg_key: /.*/mg, a_key: { regkey_key : /^.*$/ } }