added getter for checking is their is a pipeline

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

@@ -16,9 +16,7 @@ export const fetchLatestPipeline = ({ dispatch, rootState }, sha) => {
 
   return Api.pipelines(rootState.currentProjectId, { sha, per_page: '1' })
     .then(({ data }) => {
-      if (data.length) {
-        dispatch('receiveLatestPipelineSuccess', data.pop());
-      }
+      dispatch('receiveLatestPipelineSuccess', data.pop());
     })
     .catch(() => dispatch('receiveLatestPipelineError'));
 };

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

+// eslint-disable-next-line import/prefer-default-export
+export const hasLatestPipeline = state => !state.isLoadingPipeline && !!state.latestPipeline;

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

 import state from './state';
 import * as actions from './actions';
 import mutations from './mutations';
+import * as getters from './getters';
 
 export default {
   namespaced: true,
   state: state(),
   actions,
   mutations,
+  getters,
 };

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

@@ -10,10 +10,13 @@ export default {
   },
   [types.RECEIVE_LASTEST_PIPELINE_SUCCESS](state, pipeline) {
     state.isLoadingPipeline = false;
-    state.latestPipeline = {
-      id: pipeline.id,
-      status: pipeline.status,
-    };
+
+    if (pipeline) {
+      state.latestPipeline = {
+        id: pipeline.id,
+        status: pipeline.status,
+      };
+    }
   },
   [types.REQUEST_JOBS](state) {
     state.isLoadingJobs = true;

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

+import * as getters from '~/ide/stores/modules/pipelines/getters';
+import state from '~/ide/stores/modules/pipelines/state';
+
+describe('IDE pipeline getters', () => {
+  let mockedState;
+
+  beforeEach(() => {
+    mockedState = state();
+  });
+
+  describe('hasLatestPipeline', () => {
+    it('returns false when loading is true', () => {
+      mockedState.isLoadingPipeline = true;
+
+      expect(getters.hasLatestPipeline(mockedState)).toBe(false);
+    });
+
+    it('returns false when pipelines is null', () => {
+      mockedState.latestPipeline = null;
+
+      expect(getters.hasLatestPipeline(mockedState)).toBe(false);
+    });
+
+    it('returns false when loading is true & pipelines is null', () => {
+      mockedState.latestPipeline = null;
+      mockedState.isLoadingPipeline = true;
+
+      expect(getters.hasLatestPipeline(mockedState)).toBe(false);
+    });
+
+    it('returns true when loading is false & pipelines is an object', () => {
+      mockedState.latestPipeline = {
+        id: 1,
+      };
+      mockedState.isLoadingPipeline = false;
+
+      expect(getters.hasLatestPipeline(mockedState)).toBe(true);
+    });
+  });
+});

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

@@ -7,7 +7,7 @@ describe('IDE pipelines mutations', () => {
   let mockedState;
 
   beforeEach(() => {
-    mockedState = state;
+    mockedState = state();
   });
 
   describe(types.REQUEST_LATEST_PIPELINE, () => {
@@ -41,6 +41,12 @@ describe('IDE pipelines mutations', () => {
         status: pipelines[0].status,
       });
     });
+
+    it('does not set latest pipeline if pipeline is null', () => {
+      mutations[types.RECEIVE_LASTEST_PIPELINE_SUCCESS](mockedState, null);
+
+      expect(mockedState.latestPipeline).toEqual(null);
+    });
   });
 
   describe(types.REQUEST_JOBS, () => {