1 files changed, 69 insertions, 3 deletions
diff --git a/spec/frontend/pipeline_editor/components/header/pipline_editor_mini_graph_spec.js b/spec/frontend/pipeline_editor/components/header/pipline_editor_mini_graph_spec.js
index 3d7c3c839da..6b9f576917f 100644
--- a/spec/frontend/pipeline_editor/components/header/pipline_editor_mini_graph_spec.js
+++ b/spec/frontend/pipeline_editor/components/header/pipline_editor_mini_graph_spec.js
@@ -1,22 +1,54 @@
-import { shallowMount } from '@vue/test-utils';
+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import VueApollo from 'vue-apollo';
+import createMockApollo from 'helpers/mock_apollo_helper';
 import PipelineEditorMiniGraph from '~/pipeline_editor/components/header/pipeline_editor_mini_graph.vue';
 import PipelineMiniGraph from '~/pipelines/components/pipelines_list/pipeline_mini_graph.vue';
-import { mockProjectPipeline } from '../../mock_data';
+import getLinkedPipelinesQuery from '~/projects/commit_box/info/graphql/queries/get_linked_pipelines.query.graphql';
+import { PIPELINE_FAILURE } from '~/pipeline_editor/constants';
+import { mockLinkedPipelines, mockProjectFullPath, mockProjectPipeline } from '../../mock_data';
+
+const localVue = createLocalVue();
+localVue.use(VueApollo);
 
 describe('Pipeline Status', () => {
   let wrapper;
+  let mockApollo;
+  let mockLinkedPipelinesQuery;
 
-  const createComponent = ({ hasStages = true } = {}) => {
+  const createComponent = ({ hasStages = true, options } = {}) => {
     wrapper = shallowMount(PipelineEditorMiniGraph, {
+      provide: {
+        dataMethod: 'graphql',
+        projectFullPath: mockProjectFullPath,
+      },
       propsData: {
         pipeline: mockProjectPipeline({ hasStages }).pipeline,
       },
+      ...options,
+    });
+  };
+
+  const createComponentWithApollo = (hasStages = true) => {
+    const handlers = [[getLinkedPipelinesQuery, mockLinkedPipelinesQuery]];
+    mockApollo = createMockApollo(handlers);
+
+    createComponent({
+      hasStages,
+      options: {
+        localVue,
+        apolloProvider: mockApollo,
+      },
     });
   };
 
   const findPipelineMiniGraph = () => wrapper.findComponent(PipelineMiniGraph);
 
+  beforeEach(() => {
+    mockLinkedPipelinesQuery = jest.fn();
+  });
+
   afterEach(() => {
+    mockLinkedPipelinesQuery.mockReset();
     wrapper.destroy();
   });
 
@@ -39,4 +71,38 @@ describe('Pipeline Status', () => {
       expect(findPipelineMiniGraph().exists()).toBe(false);
     });
   });
+
+  describe('when querying upstream and downstream pipelines', () => {
+    describe('when query succeeds', () => {
+      beforeEach(() => {
+        mockLinkedPipelinesQuery.mockResolvedValue(mockLinkedPipelines());
+        createComponentWithApollo();
+      });
+
+      it('should call the query with the correct variables', () => {
+        expect(mockLinkedPipelinesQuery).toHaveBeenCalledTimes(1);
+        expect(mockLinkedPipelinesQuery).toHaveBeenCalledWith({
+          fullPath: mockProjectFullPath,
+          iid: mockProjectPipeline().pipeline.iid,
+        });
+      });
+    });
+
+    describe('when query fails', () => {
+      beforeEach(() => {
+        mockLinkedPipelinesQuery.mockRejectedValue(new Error());
+        createComponentWithApollo();
+      });
+
+      it('should emit an error event when query fails', async () => {
+        expect(wrapper.emitted('showError')).toHaveLength(1);
+        expect(wrapper.emitted('showError')[0]).toEqual([
+          {
+            type: PIPELINE_FAILURE,
+            reasons: [wrapper.vm.$options.i18n.linkedPipelinesFetchError],
+          },
+        ]);
+      });
+    });
+  });
 });