Tag Archives: mxunit

Implicit Getters and Setters in ColdFusion

Thanks to CF8’s new onMissingMethod method, it’s trivial to implement implicit getters and setters. As easy as it is, I couldn’t google up any code. Since it’s not the kind of thing I’d rather search for than write myself, I thought I’d go ahead and do you the favor and post it here.

I realize there’s a nasty stigma attached and I don’t disagree that it’s bad practice, but it does come in handy when building a proof of concepts or programming exploratoraly.

So here you go, irregardless of whether or not it’s bad practice:

<cfcomponent name="BaseObject">

	<cffunction name="Init" output="no">
		<cfargument name="instance" default="#StructNew()#"/>

		<cfset SetInstance( arguments.instance )/>

		<cfreturn this/>
	</cffunction>

	<cffunction name="OnMissingMethod" output="no">
		<cfargument name="missingmethodname"      required="yes" />
		<cfargument name="missingmethodarguments" />

		<cfset var prefix = Left( arguments.missingmethodname, 3 ) />
		<cfset var suffix = Mid( arguments.missingmethodname,
			4,
			Len( arguments.missingmethodname )
		) />

		<cfif ( CompareNoCase( prefix, "get" ) eq 0 ) and Has( suffix ) >
			<cfreturn Get( suffix )/>
		</cfif>
		<cfif CompareNoCase( prefix, "set" ) eq 0>
			<cfreturn Set( suffix, arguments.missingmethodarguments.1 )/>
		</cfif>

		<cfthrow message="Method #arguments.missingmethodname# not found" />
	</cffunction>

	<!--- private on down --->

	<cffunction name="GetInstance" output="no" access="private">
		<cfreturn variables.instance/>
	</cffunction>

	<cffunction name="Get" output="no" access="private">
		<cfargument name="field" required="yes"/>

		<cfset var instance = GetInstance()/>

		<cfreturn instance[ arguments.field ]/>
	</cffunction>

	<cffunction name="Has" output="no" access="private">
		<cfargument name="field" required="yes"/>

		<cfreturn StructKeyExists( GetInstance(), arguments.field )/>
	</cffunction>

	<cffunction name="Set" output="no" access="private">
		<cfargument name="field" required="yes"/>
		<cfargument name="value" required="yes"/>

		<cfset var instance = GetInstance()/>
		<cfset instance[ arguments.field ] = arguments.value/>

		<cfreturn Get( arguments.field )/>
	</cffunction>

	<cffunction name="SetInstance" output="no" access="private">
		<cfargument name="instance" required="yes">

		<cfset variables.instance = arguments.instance/>

		<cfreturn GetInstance()/>
	</cffunction>

</cfcomponent>

Download it and the MxUnit Tests!

MXUnit and Me

mxunit1If you’ve been keeping up with my blog over the last couple months, then you already know that I’ve been experimenting with test driven development. I love the work flow, the way it makes me view my code, and the peace of mind…I just don’t know that it will pay off in my work environment. Hence the experimentation.

Most of my TDD dabbling up to this point has been done in Ruby. I’ve finally gotten around to messing around with some of the major ColdFusion testing frameworks: cfunit, cfcUnit and finally MXUnit.

After doing small projects with each of them, I’ve finally decided to settle down with MXUnit. It’s got decent docs, a nice work around for private methods, I dig the web interface, the eclipse plug-in is great and creating my own stubs for the generator was a snap!

In short: Two thumbs up!

Here’s my test. I’m still really new to this sort of thing, so I’d love feedback should you feel so inclined:


	

		function Setup() {
			this.cfc = CreateObject( "component" , "BaseObject" );
			this.cfc = this.cfc.init();
	
			makePublic( this.cfc, "SetInstance" );
			makePublic( this.cfc, "Set" );
			makePublic( this.cfc, "Has" );
			makePublic( this.cfc, "Get" );
			makePublic( this.cfc, "OnMissingMethod" );
		}
	
		function TestSetInstance() {
			var value = "a";
			AssertEquals( value, this.cfc.SetInstance( value ) );
	
			value = StructNew();
			AssertEquals( value, this.cfc.SetInstance( value ) );
		}
	
		function TestGetInstance() {
			var value = "a";
	
			this.cfc.SetInstance( value );
			AssertEquals( value, this.cfc.GetInstance() );
	
			value = "b";
			this.cfc.SetInstance( value );
			AssertEquals( value, this.cfc.GetInstance() );
		}
	
		function Testinit() {
			var value = "a";
	
			this.cfc = this.cfc.init( value );
			AssertEquals( value, this.cfc.GetInstance() );
	
			this.cfc = this.cfc.init();
			AssertEquals( StructNew(), this.cfc.GetInstance() );
		}
	
		function TestSet() {
			var field = "a";
			var value = "1";
	
			AssertEquals( value, this.cfc.Set( field, value ) );
	
			field = "w";
			value = "2";
	
			AssertEquals( value, this.cfc.Set( field, value ) );
		}
	
		function TestHas() {
			var field = "a";
			var value = "1";
	
			AssertEquals( false, this.cfc.Has( field ) );
	
			this.cfc.Set( field, value );
			AssertEquals( true,  this.cfc.Has( field ) );
	
			field = "w";
			value = "2";
	
			AssertEquals( false, this.cfc.Has( field ) );
		}
	
		function TestGet() {
			var field = "a";
			var value = "1";
	
			this.cfc.Set( field, value );
			AssertEquals( value, this.cfc.Get( field ) );
	
			field = "w";
			value = "2";
	
			this.cfc.Set( field, value );
			AssertEquals( value, this.cfc.Get( field ) );
		}
	
		function OnMissingMethod() {
			var value = "a";
	
			AssertEquals( value, this.cfc.SetSomething( value ) );
			AssertEquals( value, this.cfc.GetSomething() );
		}

Click to download the component I’m testing and the file above. Now.