Reinstate changes from MR 23234

This reinstates the changes added in MR
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/23234. I was
testing a script that was supposed to operate on a fork of CE
(yorickpeterse/gitlab-ce), but it was operating on gitlab-org/gitlab-ce
by accident.

app/assets/javascripts/ide/stores/actions/file.js

@@ -56,7 +56,10 @@ export const setFileActive = ({ commit, state, getters, dispatch }, path) => {
   dispatch('scrollToTab');
 };
 
-export const getFileData = ({ state, commit, dispatch }, { path, makeFileActive = true }) => {
+export const getFileData = (
+  { state, commit, dispatch },
+  { path, makeFileActive = true, openFile = makeFileActive },
+) => {
   const file = state.entries[path];
 
   if (file.raw || (file.tempFile && !file.prevPath)) return Promise.resolve();
@@ -71,8 +74,8 @@ export const getFileData = ({ state, commit, dispatch }, { path, makeFileActive
       const normalizedHeaders = normalizeHeaders(headers);
       setPageTitle(decodeURI(normalizedHeaders['PAGE-TITLE']));
 
-      commit(types.SET_FILE_DATA, { data, file });
-      if (makeFileActive) commit(types.TOGGLE_FILE_OPEN, path);
+      if (data) commit(types.SET_FILE_DATA, { data, file });
+      if (openFile) commit(types.TOGGLE_FILE_OPEN, path);
       if (makeFileActive) dispatch('setFileActive', path);
       commit(types.TOGGLE_LOADING, { entry: file });
     })

app/assets/javascripts/ide/stores/actions/merge_request.js

@@ -161,6 +161,7 @@ export const openMergeRequest = (
             dispatch('getFileData', {
               path: change.new_path,
               makeFileActive: ind === 0,
+              openFile: true,
             });
           }
         }

changelogs/unreleased/ide-open-all-mr-files.yml

+---
+title: Open first 10 merge request files in IDE
+merge_request:
+author:
+type: fixed

spec/javascripts/ide/stores/actions/merge_request_spec.js

@@ -262,16 +262,28 @@ describe('IDE store merge request actions', () => {
         bar: {},
       };
 
-      spyOn(store, 'dispatch').and.callFake(type => {
+      const originalDispatch = store.dispatch;
+
+      spyOn(store, 'dispatch').and.callFake((type, payload) => {
         switch (type) {
           case 'getMergeRequestData':
             return Promise.resolve(testMergeRequest);
           case 'getMergeRequestChanges':
             return Promise.resolve(testMergeRequestChanges);
-          default:
+          case 'getFiles':
+          case 'getMergeRequestVersions':
+          case 'getBranchData':
+          case 'setFileMrChange':
             return Promise.resolve();
+          default:
+            return originalDispatch(type, payload);
         }
       });
+      spyOn(service, 'getFileData').and.callFake(() =>
+        Promise.resolve({
+          headers: {},
+        }),
+      );
     });
 
     it('dispatch actions for merge request data', done => {
@@ -303,7 +315,17 @@ describe('IDE store merge request actions', () => {
     });
 
     it('updates activity bar view and gets file data, if changes are found', done => {
-      testMergeRequestChanges.changes = [{ new_path: 'foo' }, { new_path: 'bar' }];
+      store.state.entries.foo = {
+        url: 'test',
+      };
+      store.state.entries.bar = {
+        url: 'test',
+      };
+
+      testMergeRequestChanges.changes = [
+        { new_path: 'foo', path: 'foo' },
+        { new_path: 'bar', path: 'bar' },
+      ];
 
       openMergeRequest(store, mr)
         .then(() => {
@@ -321,8 +343,11 @@ describe('IDE store merge request actions', () => {
             expect(store.dispatch).toHaveBeenCalledWith('getFileData', {
               path: change.new_path,
               makeFileActive: i === 0,
+              openFile: true,
             });
           });
+
+          expect(store.state.openFiles.length).toBe(testMergeRequestChanges.changes.length);
         })
         .then(done)
         .catch(done.fail);