dive-buddy/test/index.js

Allows you to dive into properties without fear of NPE, lets you set a default return value

var diveBuddy = require('../');
var assert = require('assert');

describe('diveBuddy',function(){
    describe('property access',function(){
        it('should work with string path',function(){
            assert.equal(diveBuddy({a:{b:{c:{d:'heeey'}}}},'a.b.c.d'),'heeey');
        });
        it('should work with array path',function(){
            assert.equal(diveBuddy({a:{b:{c:{d:'heeey'}}}},['a','b','c','d']),'heeey');
        });
        it('should show the default return value if no value found',function(){
            assert.equal(diveBuddy({a:{b:{c:''}}},['a','b','c','d'],'heeey'),'heeey');
        });
        it('should not show the default return value if falsey value found',function(){
            assert.equal(diveBuddy({a:{b:{c:{d:''}}}},['a','b','c','d'],'heeey'),'');
        });
        it('should short-circuit to the default return value if path doesnt exist',function(){
            assert.equal(diveBuddy({a:{b:{c:{d:''}}}},['a','b','c','d','e','f'],false),false);
        });
    });

    describe('function calling',function(){
        it('should call functions if passed in path with () at the end', function(){
            assert.equal(diveBuddy({a:{b:{c:{d:function(){return {someProp:'text'};}}}}},'a.b.c.d().someProp',false),'text');
        });
        it('should support calling syntax even on a null property', function(){
            assert.equal(diveBuddy({a:{b:{c:{d:{someProp:'text'}}}}},'a.b.c.d().someProp',false),false);
        });
    });
});