it( 'true if $ is found and is correct', function() {
            assert.ok( varTest( '$my-var = 0' ) )
            assert.ok( varTest( '$first-value = floor( (100% / $columns) * $index )' ) )
            assert.ok( varTest( '$-my-private-var = red' ) )
            assert.ok( varTest( '$_myPrivateVar = red' ) )