Here is a spec written for you. Please note that in the beforeEach() life-cycle method you need to execute the setup() method will will setup a new ColdBox request for each spec you run.
component extends="coldbox.system.testing.BaseTestCase" appMapping="/apps/MyApp"{
function run(){
describe( "Main Handler", function(){
beforeEach(function( currentSpec ){
// Setup as a new ColdBox request, VERY IMPORTANT. ELSE EVERYTHING LOOKS LIKE THE SAME REQUEST.
setup();
});
it( "+homepage renders", function(){
var event = execute( event="main.index", renderResults=true );
expect( event.getValue( name="welcomemessage", private=true ) ).toBe( "Welcome to ColdBox!" );
});
});
}
}