feat: content in sub folders (#2897)

packages/netlify-cms-backend-github/src/__tests__/GraphQLAPI.spec.js

@@ -0,0 +1,72 @@
+import GraphQLAPI from '../GraphQLAPI';
+
+global.fetch = jest.fn().mockRejectedValue(new Error('should not call fetch inside tests'));
+
+describe('github GraphQL API', () => {
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  describe('editorialWorkflowGit', () => {
+    it('should should flatten nested tree into a list of files', () => {
+      const api = new GraphQLAPI({ branch: 'gh-pages', repo: 'my-repo' });
+      const entries = [
+        {
+          name: 'post-1.md',
+          sha: 'sha-1',
+          type: 'blob',
+          blob: { size: 1 },
+        },
+        {
+          name: 'post-2.md',
+          sha: 'sha-2',
+          type: 'blob',
+          blob: { size: 2 },
+        },
+        {
+          name: '2019',
+          sha: 'dir-sha',
+          type: 'tree',
+          object: {
+            entries: [
+              {
+                name: 'nested-post.md',
+                sha: 'nested-post-sha',
+                type: 'blob',
+                blob: { size: 3 },
+              },
+            ],
+          },
+        },
+      ];
+      const path = 'posts';
+
+      expect(api.getAllFiles(entries, path)).toEqual([
+        {
+          name: 'post-1.md',
+          sha: 'sha-1',
+          type: 'blob',
+          size: 1,
+          path: 'posts/post-1.md',
+          blob: { size: 1 },
+        },
+        {
+          name: 'post-2.md',
+          sha: 'sha-2',
+          type: 'blob',
+          size: 2,
+          path: 'posts/post-2.md',
+          blob: { size: 2 },
+        },
+        {
+          name: 'nested-post.md',
+          sha: 'nested-post-sha',
+          type: 'blob',
+          size: 3,
+          path: 'posts/2019/nested-post.md',
+          blob: { size: 3 },
+        },
+      ]);
+    });
+  });
+});