Fix for diff_file specs

spec/javascripts/diffs/components/diff_file_spec.js

@@ -22,11 +22,18 @@ describe('DiffFile', () => {
 
       expect(el.id).toEqual(fileHash);
       expect(el.classList.contains('diff-file')).toEqual(true);
+
       expect(el.querySelectorAll('.diff-content.hidden').length).toEqual(0);
       expect(el.querySelector('.js-file-title')).toBeDefined();
       expect(el.querySelector('.file-title-name').innerText.indexOf(filePath) > -1).toEqual(true);
       expect(el.querySelector('.js-syntax-highlight')).toBeDefined();
-      expect(el.querySelectorAll('.line_content').length > 5).toEqual(true);
+
+      expect(vm.file.renderIt).toEqual(false);
+      vm.file.renderIt = true;
+
+      vm.$nextTick(() => {
+        expect(el.querySelectorAll('.line_content').length > 5).toEqual(true);
+      });
     });
 
     describe('collapsed', () => {
@@ -34,6 +41,7 @@ describe('DiffFile', () => {
         expect(vm.$el.querySelectorAll('.diff-content').length).toEqual(1);
         expect(vm.file.collapsed).toEqual(false);
         vm.file.collapsed = true;
+        vm.file.renderIt = true;
 
         vm.$nextTick(() => {
           expect(vm.$el.querySelectorAll('.diff-content').length).toEqual(0);

spec/javascripts/diffs/mock_data/diff_file.js

@@ -39,6 +39,7 @@ export default {
   viewPath: '/gitlab-org/gitlab-test/blob/spooky-stuff/CHANGELOG',
   replacedViewPath: null,
   collapsed: false,
+  renderIt: false,
   tooLarge: false,
   contextLinesPath:
     '/gitlab-org/gitlab-test/blob/c48ee0d1bf3b30453f5b32250ce03134beaa6d13/CHANGELOG/diff',