Resets state correctly when switching to merge request in IDE

Closes #47763

app/assets/javascripts/ide/components/repo_editor.vue

@@ -18,7 +18,13 @@ export default {
     },
   },
   computed: {
-    ...mapState(['rightPanelCollapsed', 'viewer', 'panelResizing', 'currentActivityView']),
+    ...mapState([
+      'rightPanelCollapsed',
+      'viewer',
+      'panelResizing',
+      'currentActivityView',
+      'rightPane',
+    ]),
     ...mapGetters([
       'currentMergeRequest',
       'getStagedFile',
@@ -77,6 +83,9 @@ export default {
         this.editor.updateDimensions();
       }
     },
+    rightPane() {
+      this.editor.updateDimensions();
+    },
   },
   beforeDestroy() {
     this.editor.dispose();

app/assets/javascripts/ide/stores/modules/merge_requests/actions.js

@@ -31,15 +31,16 @@ export const openMergeRequest = ({ commit, dispatch }, { projectPath, id }) => {
   commit(rootTypes.CLEAR_PROJECTS, null, { root: true });
   commit(rootTypes.SET_CURRENT_MERGE_REQUEST, `${id}`, { root: true });
   commit(rootTypes.RESET_OPEN_FILES, null, { root: true });
-  dispatch('pipelines/resetLatestPipeline', null, { root: true });
   dispatch('setCurrentBranchId', '', { root: true });
   dispatch('pipelines/stopPipelinePolling', null, { root: true })
     .then(() => {
+      dispatch('pipelines/resetLatestPipeline', null, { root: true });
       dispatch('pipelines/clearEtagPoll', null, { root: true });
     })
     .catch(e => {
       throw e;
     });
+  dispatch('setRightPane', null, { root: true });
 
   router.push(`/project/${projectPath}/merge_requests/${id}`);
 };

app/assets/javascripts/ide/stores/modules/pipelines/actions.js

@@ -106,7 +106,9 @@ export const fetchJobTrace = ({ dispatch, state }) => {
     .catch(() => dispatch('receiveJobTraceError'));
 };
 
-export const resetLatestPipeline = ({ commit }) =>
+export const resetLatestPipeline = ({ commit }) => {
   commit(types.RECEIVE_LASTEST_PIPELINE_SUCCESS, null);
+  commit(types.SET_DETAIL_JOB, null);
+};
 
 export default () => {};

spec/javascripts/ide/components/repo_editor_spec.js

@@ -315,6 +315,17 @@ describe('RepoEditor', () => {
         done();
       });
     });
+
+    it('calls updateDimensions when rightPane is updated', done => {
+      vm.$store.state.rightPane = 'testing';
+
+      vm.$nextTick(() => {
+        expect(vm.editor.updateDimensions).toHaveBeenCalled();
+        expect(vm.editor.updateDiffView).toHaveBeenCalled();
+
+        done();
+      });
+    });
   });
 
   describe('show tabs', () => {

spec/javascripts/ide/stores/modules/merge_requests/actions_spec.js

@@ -208,18 +208,19 @@ describe('IDE merge requests actions', () => {
         expect(commit.calls.argsFor(1)).toEqual(['SET_CURRENT_MERGE_REQUEST', '1', { root: true }]);
         expect(commit.calls.argsFor(2)).toEqual(['RESET_OPEN_FILES', null, { root: true }]);
 
-        expect(dispatch.calls.argsFor(0)).toEqual([
-          'pipelines/resetLatestPipeline',
-          null,
-          { root: true },
-        ]);
-        expect(dispatch.calls.argsFor(1)).toEqual(['setCurrentBranchId', '', { root: true }]);
-        expect(dispatch.calls.argsFor(2)).toEqual([
+        expect(dispatch.calls.argsFor(0)).toEqual(['setCurrentBranchId', '', { root: true }]);
+        expect(dispatch.calls.argsFor(1)).toEqual([
           'pipelines/stopPipelinePolling',
           null,
           { root: true },
         ]);
+        expect(dispatch.calls.argsFor(2)).toEqual(['setRightPane', null, { root: true }]);
         expect(dispatch.calls.argsFor(3)).toEqual([
+          'pipelines/resetLatestPipeline',
+          null,
+          { root: true },
+        ]);
+        expect(dispatch.calls.argsFor(4)).toEqual([
           'pipelines/clearEtagPoll',
           null,
           { root: true },

spec/javascripts/ide/stores/modules/pipelines/actions_spec.js

@@ -18,6 +18,7 @@ import actions, {
   receiveJobTraceError,
   receiveJobTraceSuccess,
   fetchJobTrace,
+  resetLatestPipeline,
 } from '~/ide/stores/modules/pipelines/actions';
 import state from '~/ide/stores/modules/pipelines/state';
 import * as types from '~/ide/stores/modules/pipelines/mutation_types';
@@ -416,4 +417,20 @@ describe('IDE pipelines actions', () => {
       });
     });
   });
+
+  describe('resetLatestPipeline', () => {
+    it('commits reset mutations', done => {
+      testAction(
+        resetLatestPipeline,
+        null,
+        mockedState,
+        [
+          { type: types.RECEIVE_LASTEST_PIPELINE_SUCCESS, payload: null },
+          { type: types.SET_DETAIL_JOB, payload: null },
+        ],
+        [],
+        done,
+      );
+    });
+  });
 });