Merge branch 'fix-ide-empty-editor' into 'master'

Fixed empty editors in the IDE

Closes #46153

See merge request gitlab-org/gitlab-ce!18842

app/assets/javascripts/ide/lib/common/model.js

@@ -14,12 +14,12 @@ export default class Model {
       (this.originalModel = this.monaco.editor.createModel(
         head ? head.content : this.file.raw,
         undefined,
-        new this.monaco.Uri(null, null, `original/${this.file.key}`),
+        new this.monaco.Uri(null, null, `original/${this.path}`),
       )),
       (this.model = this.monaco.editor.createModel(
         this.content,
         undefined,
-        new this.monaco.Uri(null, null, this.file.key),
+        new this.monaco.Uri(null, null, this.path),
       )),
     );
     if (this.file.mrChange) {
@@ -27,7 +27,7 @@ export default class Model {
         (this.baseModel = this.monaco.editor.createModel(
           this.file.baseRaw,
           undefined,
-          new this.monaco.Uri(null, null, `target/${this.file.path}`),
+          new this.monaco.Uri(null, null, `target/${this.path}`),
         )),
       );
     }

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

@@ -196,6 +196,8 @@ export const unstageChange = ({ commit }, path) => {
 };
 
 export const openPendingTab = ({ commit, getters, dispatch, state }, { file, keyPrefix }) => {
+  if (getters.activeFile && getters.activeFile.key === `${keyPrefix}-${file.key}`) return false;
+
   state.openFiles.forEach(f => eventHub.$emit(`editor.update.model.dispose.${f.key}`));
 
   commit(types.ADD_PENDING_TAB, { file, keyPrefix });

spec/javascripts/ide/lib/common/model_spec.js

@@ -28,6 +28,10 @@ describe('Multi-file editor library model', () => {
     expect(model.originalModel).not.toBeNull();
     expect(model.model).not.toBeNull();
     expect(model.baseModel).not.toBeNull();
+
+    expect(model.originalModel.uri.path).toBe('original/path--path');
+    expect(model.model.uri.path).toBe('path--path');
+    expect(model.baseModel.uri.path).toBe('target/path--path');
   });
 
   it('creates model with head file to compare against', () => {

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

@@ -569,6 +569,22 @@ describe('IDE store file actions', () => {
         .catch(done.fail);
     });
 
+    it('returns false when already opened', done => {
+      store.state.openFiles.push({
+        ...f,
+        active: true,
+        key: `pending-${f.key}`,
+      });
+
+      store
+        .dispatch('openPendingTab', { file: f, keyPrefix: 'pending' })
+        .then(added => {
+          expect(added).toBe(false);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
     it('pushes router URL when added', done => {
       store.state.currentBranchId = 'master';