Made necessary changes to tests to prevent Closure Compiler from optimizing them away, causing test failures

test/MemberBuilderValidator/MethodTest.js

@@ -230,7 +230,9 @@ require( 'common' ).testCase(
                 name,
                 function() {},
                 { 'override': true },
-                { member: function( a, b, c ) {} },
+                // this function returns each of its arguments, otherwise
+                // they'll be optimized away by Closure Compiler.
+                { member: function( a, b, c ) { return [a,b,c]; } },
                 { 'virtual': true }
             );
         } );

test/test-class-abstract.js

@@ -192,6 +192,9 @@ var ConcreteFoo = Class.extend( AbstractFoo,
 {
     method: function( one, two, three )
     {
+        // prevent Closure Compiler from optimizing the arguments away, causing
+        // a definition failure
+        return [ one, two, three ];
     },
 
     second: function()
@@ -391,8 +394,9 @@ var ConcreteFoo = Class.extend( AbstractFoo,
     {
         Class.extend( SubAbstractFoo,
         {
-            // concrete, so the result would otherwise not be abstract
-            'method': function( one, two, three ) {},
+            // concrete, so the result would otherwise not be abstract (return
+            // args so they're not optimized away during compile)
+            'method': function( _, __, ___ ) { return [ _, __, ___ ]; },
 
             // the problem
             'toString': function() {},

test/test-warn-exception.js

@@ -79,6 +79,10 @@ var common  = require( './common' ),
     assert.equal( warning.message, err.message,
         "Warning message should be taken from wrapped exception"
     );
+
+    // this little trick prevents the compiler from optimizing away the
+    // assignment, which would break the test in certain versions of FF.
+    return _;
 } )();