genish.js/test/memo-test.js

gen~ in js

/* global describe it */
var assert = require('assert')
var genlib = require( '../dist/index.js' )

var gen = genlib.gen
var memo = genlib.memo
var add = genlib.add

describe( 'memo', ()=> {
  it( 'should store a value after calculating, and subsequently return calculated value', ()=> {
    let answer = 26,
        m = memo( add( 5, 8 ) ),
        graph = add( m, m ),
        out   = gen.createCallback( graph ),
        result = out()

    assert.equal( result, answer )
  })
})