From 3a7d28597e3e23ef497186891662b4a85d013b08 Mon Sep 17 00:00:00 2001
From: Filipa Lacerda <filipa@gitlab.com>
Date: Fri, 11 May 2018 08:46:05 +0000
Subject: Merge branch 'ide-mr-open-file-fix' into 'master'

Fixed none merge request files not being openable in the web IDE

See merge request gitlab-org/gitlab-ce!18881
---
 .../javascripts/ide/components/repo_editor.vue     |  2 +-
 app/assets/javascripts/ide/stores/utils.js         |  1 +
 .../javascripts/ide/components/repo_editor_spec.js | 26 +++++++++++++++++++++-
 3 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/app/assets/javascripts/ide/components/repo_editor.vue b/app/assets/javascripts/ide/components/repo_editor.vue
index ff7e546fb9c..f8678b602ac 100644
--- a/app/assets/javascripts/ide/components/repo_editor.vue
+++ b/app/assets/javascripts/ide/components/repo_editor.vue
@@ -140,7 +140,7 @@ export default {
         this.file.staged && this.file.key.indexOf('unstaged-') === 0 ? head : null,
       );
 
-      if (this.viewer === viewerTypes.mr) {
+      if (this.viewer === viewerTypes.mr && this.file.mrChange) {
         this.editor.attachMergeRequestModel(this.model);
       } else {
         this.editor.attachModel(this.model);
diff --git a/app/assets/javascripts/ide/stores/utils.js b/app/assets/javascripts/ide/stores/utils.js
index bc79ff4a542..e0b9766fbee 100644
--- a/app/assets/javascripts/ide/stores/utils.js
+++ b/app/assets/javascripts/ide/stores/utils.js
@@ -44,6 +44,7 @@ export const dataStructure = () => ({
   size: 0,
   parentPath: null,
   lastOpenedAt: 0,
+  mrChange: null,
 });
 
 export const decorateData = entity => {
diff --git a/spec/javascripts/ide/components/repo_editor_spec.js b/spec/javascripts/ide/components/repo_editor_spec.js
index 360b6d4dc15..ff500acd849 100644
--- a/spec/javascripts/ide/components/repo_editor_spec.js
+++ b/spec/javascripts/ide/components/repo_editor_spec.js
@@ -24,7 +24,7 @@ describe('RepoEditor', () => {
     f.active = true;
     f.tempFile = true;
     vm.$store.state.openFiles.push(f);
-    vm.$store.state.entries[f.path] = f;
+    Vue.set(vm.$store.state.entries, f.path, f);
     vm.monaco = true;
 
     vm.$mount();
@@ -215,6 +215,30 @@ describe('RepoEditor', () => {
       expect(vm.editor.attachModel).toHaveBeenCalledWith(vm.model);
     });
 
+    it('attaches model to merge request editor', () => {
+      vm.$store.state.viewer = 'mrdiff';
+      vm.file.mrChange = true;
+      spyOn(vm.editor, 'attachMergeRequestModel');
+
+      Editor.editorInstance.modelManager.dispose();
+
+      vm.setupEditor();
+
+      expect(vm.editor.attachMergeRequestModel).toHaveBeenCalledWith(vm.model);
+    });
+
+    it('does not attach model to merge request editor when not a MR change', () => {
+      vm.$store.state.viewer = 'mrdiff';
+      vm.file.mrChange = false;
+      spyOn(vm.editor, 'attachMergeRequestModel');
+
+      Editor.editorInstance.modelManager.dispose();
+
+      vm.setupEditor();
+
+      expect(vm.editor.attachMergeRequestModel).not.toHaveBeenCalledWith(vm.model);
+    });
+
     it('adds callback methods', () => {
       spyOn(vm.editor, 'onPositionChange').and.callThrough();
 
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