Update gabledroofbug.test.js

Author: Beakerboy

test/gabledroofbug.test.js

@@ -31,10 +31,23 @@ const data = `
 </way>
 </osm>`;
 
+let accessCount = 0;
+const fetch = function (input) {
+  accessCoint++;
+  if (accessCount === 1) {
+    return data;
+  }
+  throw new Error(input);
+}
+
 beforeEach(() => {
   errors = [];
 });
 
+test ('', () => {
+  Building.downloadDataAroundBuilding('way', '31361386');
+});
+
 test('Constructor', () => {
   const bldg = new Building('31361386', data);
   expect(bldg.parts.length).toBe(1);