Add test for nested files

Author: atjn

test/logic.js

@@ -64,6 +64,26 @@ tap.test('basic folder', async () => {
 
 });
 
+const nestedFS = Volume.fromJSON(
+  {
+    './8bytes.txt': B.repeat(8),
+    './much/empty/path/500bytes.txt': B.repeat(500),
+    './much/empty/path/nested/6000bytes.txt': B.repeat(6000),
+  },
+  '/fixture',
+).promisesApi;
+
+tap.test('nested folder', async () => {
+
+  tap.test('get folder size', async () => {
+
+    tap.equal(await callAll('/fixture', {fs: nestedFS}), 6508, 'should return the correct folder size');
+    tap.end();
+
+  });
+
+});
+
 const linkedFS = Volume.fromJSON(
   {
     './original.txt': B.repeat(50),