asp.net mvc - How pass different repository object with same interface to my service layer using Ninject? -

-

so i've run confusion in past, , got around not using ninject. i'm redoing site i'm @ point ninject seems handy again, i've got myself confused. again.

i have mvc3 project using repository pattern. currently, home controller creates few objects orderrepository.cs, customerrepository.cs , sends them service called orderservice.cs , customerservice.cs. have test project can use send in fakeorderrepository.cs , fakecustomerrepository.cs. handy unit testing go through project.

however, realise declaring repositories in controller , unit tests, i'm setting dependency on objects. have no repositories passed, , have service layer use ninject "oh look, iorderrepository in constructor, better go orderrepository".

the issue ran last time while can bind orderrepository instance or iorderrepository in contructor , bind 2 in global.ascx, seems leave unit tests high , dry. unless go in , switch every bind in global.ascx object want passed in (in case, fakeorderrepository.cs) every time run tests, real repository passed in. how can have test project , controller pass different repositories while using same iorderrepository interface?

whew, long explanation simple. have feeling i'm overthinking , missing few key understandings.

tldr: how can have constructor in service layer , pass in different repository objects controllers , unit tests using ninject.

it makes sense use constructor injection in service classes inject repositories , can set global.asax.

to unit tests working have couple of options:

  1. setup bindings fake repositories in tests. in other words create different ninject module/kernel in test setup method. if these controller tests bindings in global.asax won't apply have set alternative bindings anyway or setup dependencies manually (which second option).

  2. use constructor injection inject service classes controller , have ninject handle @ runtime overriding controller factory. in unit tests create service classes, , fake repositories manually , pass service objects controllers via constructors.

i found article helpful understand how integrate ninject mvc project: http://msdn.microsoft.com/en-us/magazine/dd942838.aspx


Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more