diff --git a/.gitignore b/.gitignore
index 7c56f5e78f..2213de4801 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,8 +35,8 @@ yarn.lock
 package-lock.json
 components/**/*.js
 components/**/*.jsx
-!components/**/__tests__/*.js
-!components/**/__tests__/*.js.snap
+!components/**/__tests__/**/*.js
+!components/**/__tests__/**/*.js.snap
 /.history
 # Docs templates
 site/theme/template/IconDisplay/*.js
diff --git a/components/tree/__tests__/directory.test.js b/components/tree/__tests__/directory.test.js
index 0aaf8bc1e8..336ecef412 100644
--- a/components/tree/__tests__/directory.test.js
+++ b/components/tree/__tests__/directory.test.js
@@ -4,8 +4,9 @@ import Tree from '../index';
 
 const { DirectoryTree, TreeNode } = Tree;
 
+const mockDebounce = jest.mock('lodash/debounce', () => fn => fn);
+
 describe('Directory Tree', () => {
-  const mockDebounce = jest.mock('lodash/debounce', () => fn => fn);
   beforeAll(() => {
     jest.useFakeTimers();
   });