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Mocking Dependencies in local scope
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Richard Mueller  
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 More options Jun 20 2012, 8:08 pm
From: Richard Mueller <rbmuel...@gmail.com>
Date: Wed, 20 Jun 2012 17:08:46 -0700 (PDT)
Local: Wed, Jun 20 2012 8:08 pm
Subject: Mocking Dependencies in local scope
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Hi - I'm trying to mock a dependency in one of my methods, which is
currently assigned to the local scope, and I'm having trouble using the
injectProperty method to achieve this.  I'm fairly new to Mighty Mock so I
can't be certain I'm missing something obvious.

<cffunction name="foo">
    <cfset local.bar = CreateObject("component", "someOtherObj") />
//or how about?
    <cfset someOtherFunction(CreateObject("component", "myOtherObj") />
</cffunction>

Any thoughts/techniques on either of these?

Thanks

Richard


 
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James Holmes  
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 More options Jun 20 2012, 8:24 pm
From: James Holmes <james.hol...@gmail.com>
Date: Thu, 21 Jun 2012 10:24:49 +1000
Local: Wed, Jun 20 2012 8:24 pm
Subject: Re: [mxunit:3634] Mocking Dependencies in local scope
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Can you consider altering the architecture so that the object (or at least
the method) takes in the instance of someOtherObj? If you need new
instances each time, perhaps the object can take in a factory that creates
them instead. This will give you loose coupling and allow for easy testing.

--
Shu Ha Ri: Agile and .NET blog
http://www.bifrost.com.au/

On 21 June 2012 10:08, Richard Mueller <rbmuel...@gmail.com> wrote:


 
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Marc Esher  
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 More options Jun 20 2012, 8:37 pm
From: Marc Esher <marc.es...@gmail.com>
Date: Wed, 20 Jun 2012 20:37:38 -0400
Local: Wed, Jun 20 2012 8:37 pm
Subject: Re: [mxunit:3635] Mocking Dependencies in local scope
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On Wed, Jun 20, 2012 at 8:24 PM, James Holmes <james.hol...@gmail.com> wrote:
> Can you consider altering the architecture so that the object (or at least
> the method) takes in the instance of someOtherObj? If you need new instances
> each time, perhaps the object can take in a factory that creates them
> instead. This will give you loose coupling and allow for easy testing.

Right on: if it's a dependency, make it injectable, either directly or
via a factory

Failing that, the next best thing is to mimic the factory approach and
do something like this:

<cffunction name="foo">
    <cfset local.bar = getBar() />

</cffunction>

<cffunction name="getBar">
   <cfreturn CreateObject("component", "someOtherObj")>
</cffunction>

And then in your test, you can use injectMethod() to override the
getBar method to have it return the object you want.

But the fact that you need to do that is a huge red flag that
dependency injection is the answer here.

Marc


 
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Richard Mueller  
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 More options Jun 20 2012, 11:10 pm
From: Richard Mueller <rbmuel...@gmail.com>
Date: Wed, 20 Jun 2012 20:10:46 -0700 (PDT)
Local: Wed, Jun 20 2012 11:10 pm
Subject: Re: [mxunit:3635] Mocking Dependencies in local scope
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We are not using and IoC framework just yet so is it feasible to just set
accessors="true" then create a someOtherObj property.
Then before the original obj init, use myObject.setSomeOtherObj (
CreateObject("component", "someOtherObj") ) ?  Making foo look a little
more like

<cffunction name="foo">
 <cfset local.bar = variables.someOtherObj.doSomething() />
</cffunction>

Otherwise I think the init may get a bit messy with objects never being
used.


 
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Marc Esher  
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 More options Jun 21 2012, 9:42 am
From: Marc Esher <marc.es...@gmail.com>
Date: Thu, 21 Jun 2012 09:42:58 -0400
Local: Thurs, Jun 21 2012 9:42 am
Subject: Re: [mxunit:3638] Mocking Dependencies in local scope
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exactly


 
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