tidy up test

test/function/named-external-method-in-prototype/_config.js

@@ -1,5 +1,5 @@
 module.exports = {
-	description: 'method of external named import used inside prototype method',
+	description: 'method of external named import used inside prototype method (#68)',
 	context: {
 		// override require here, making "foo" appear as a global module
 		require: function ( name ) {
@@ -11,5 +11,5 @@ module.exports = {
 	},
 	options: {
 		external: [ 'bar' ]
-	},
+	}
 };

test/function/named-external-method-in-prototype/foo.js

@@ -1,16 +1,9 @@
 import { bar } from 'bar';
 
 export default function Foo() {
-	// XXX: one does not even have to call the method, simply having it defined
-	// on the prototype triggers the failure
-	//return this.bar();
-	return bar.foobar();
+	this.answer = bar.foobar();
 }
 
-// XXX: this prototype definition throws it of, comment it out and it at least
-// fails at runtime because it generates wrong code
 Foo.prototype.bar = function () {
-	// XXX: it also has to be a nested function, simply calling `bar()` here
-	// works, or at least it fails ar runtime like the case above
 	return bar.foobar();
 };

test/function/named-external-method-in-prototype/main.js

@@ -1,5 +1,3 @@
-// XXX: it has to be an imported module, otherwise it compiles and fails at
-// runtime
 import Foo from './foo.js';
 
-assert.equal( new Foo(), 42 );
+assert.equal( new Foo().bar(), 42 );