test: combine chain/wrap into chain-wrap

test/wrap.coffee → test/chain-wrap.coffee

@@ -4,14 +4,14 @@ _s = require "#{__dirname}/../index"
 sinon = require 'sinon'
 _ = require 'underscore'
 
-describe '_s(a)', ->
- it 'has the methods of _s excluding value/mixin', ->
- for obj in [_s(), _s('a')]
- assert.deepEqual(
- _.chain().functions(obj).without('value').value()
- _.chain().functions(_s).without('mixin').value()
- )
+describe 'methods on wrapped/chained objects are the same as methods on _s', ->
+ for obj in [_s(), _s('a'), _s().chain(), _s('a').chain()]
+ assert.deepEqual(
+ _.chain().functions(obj).without('value').value()
+ _.chain().functions(_s).without('mixin').value()
+ )
 
+describe '_s(a)', ->
  it 'binds a as the first argument to the next method invoked', ->
  spy = sinon.spy ->
  _s.mixin fn: spy
@@ -43,3 +43,22 @@ describe '_s(a)', ->
  it '.missing() throws', ->
  assert.throws () ->
  _s('a').missing()
+
+describe '_s(a).chain()', ->
+ it '.value() returns a', ->
+ assert.equal _s().chain().value(), undefined
+ assert.equal _s('a').chain().value(), 'a'
+
+ it '.fn1(b).fn2(c).value() is equivalent to calling _s.fn2(_s.fn1(a, b), c)', ->
+ spy1 = sinon.spy -> 1
+ spy2 = sinon.spy -> 2
+ _s.mixin {fn1: spy1, fn2: spy2}
+ val = _s('a').chain().fn1('b').fn2('c').value()
+ assert.equal val, 2
+ assert.equal val, _s.fn2(_s.fn1('a', 'b'), 'c')
+ assert.equal spy1.callCount, 2
+ assert.equal spy2.callCount, 2
+ assert.deepEqual spy1.args[0], ['a', 'b']
+ assert.deepEqual spy1.args[1], ['a', 'b']
+ assert.deepEqual spy2.args[0], [1, 'c']
+ assert.deepEqual spy2.args[1], [1, 'c']