query with template string

test/acceptance/mvt-regressions.js

@@ -73,7 +73,6 @@ describe('mvt regressions', function () {
                     done();
                 });
             });
-
         });
     });
 });
@@ -94,14 +93,19 @@ describe('MVT Mapnik', function () {
     });
 
     it('invalid properties', function (done) {
+        const query = `
+            select ldc, cartodb_id, _2016_6_partcntry, the_geom_webmercator, country
+            from countries_null_values 
+            where country = 'Kenya' OR country = 'Sudan' LIMIT 3
+        `;
+
         const mapConfig = {
             version: '1.7.0',
             layers: [
                 {
                     type: 'cartodb',
                     options: {
-                        sql: "select ldc, cartodb_id, _2016_6_partcntry, the_geom_webmercator, country " + 
-			     "from countries_null_values where country = 'Kenya' OR country = 'Sudan' LIMIT 3",
+                        sql: query
                     }
                 }
             ]