Adds Vuex store to handle the data for tests reports in MR widget

app/assets/javascripts/reports/store/actions.js

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+import Visibility from 'visibilityjs';
+import axios from '../../lib/utils/axios_utils';
+import Poll from '../../lib/utils/poll';
+import * as types from './mutation_types';
+
+export const setEndpoint = ({ commit }, endpoint) => commit(types.SET_ENDPOINT, endpoint);
+
+export const requestReports = ({ commit }) => commit(types.REQUEST_REPORTS);
+
+let eTagPoll;
+
+export const clearEtagPoll = () => {
+  eTagPoll = null;
+};
+
+export const stopPolling = () => {
+  if (eTagPoll) eTagPoll.stop();
+};
+
+export const restartPolling = () => {
+  if (eTagPoll) eTagPoll.restart();
+};
+
+/**
+ * We need to poll the reports endpoint while they are being parsed in the Backend.
+ * This can take up to one minute.
+ *
+ * Poll.js will handle etag response.
+ * While http status code is 204, it means it's parsing, and we'll keep polling
+ * When http status code is 200, it means parsing is done, we can show the results & stop polling
+ * When http status code is 500, it means parsing went wrong and we stop polling
+ */
+export const fetchReports = ({ state, dispatch }) => {
+  dispatch('requestReports');
+
+  eTagPoll = new Poll({
+    resource: {
+      getReports(endpoint) {
+        return axios.get(endpoint);
+      },
+    },
+    data: state.endpoint,
+    method: 'getReports',
+    successCallback: ({ data }) => dispatch('receiveReportsSuccess', data),
+    errorCallback: () => dispatch('receiveReportsError'),
+  });
+
+  if (!Visibility.hidden()) {
+    eTagPoll.makeRequest();
+  }
+
+  Visibility.change(() => {
+    if (!Visibility.hidden()) {
+      dispatch('restartPolling');
+    } else {
+      dispatch('stopPolling');
+    }
+  });
+};
+
+export const receiveReportsSuccess = ({ commit }, response) =>
+  commit(types.RECEIVE_REPORTS_SUCCESS, response);
+
+export const receiveReportsError = ({ commit }) => commit(types.RECEIVE_REPORTS_ERROR);
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};

app/assets/javascripts/reports/store/index.js

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+import Vue from 'vue';
+import Vuex from 'vuex';
+import * as actions from './actions';
+import mutations from './mutations';
+import state from './state';
+
+Vue.use(Vuex);
+
+export default () => new Vuex.Store({
+  actions,
+  mutations,
+  state: state(),
+});

app/assets/javascripts/reports/store/mutation_types.js

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+export const SET_ENDPOINT = 'SET_ENDPOINT';
+
+export const REQUEST_REPORTS = 'REQUEST_REPORTS';
+export const RECEIVE_REPORTS_SUCCESS = 'RECEIVE_REPORTS_SUCCESS';
+export const RECEIVE_REPORTS_ERROR = 'RECEIVE_REPORTS_ERROR';

app/assets/javascripts/reports/store/mutations.js

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+/* eslint-disable no-param-reassign */
+import * as types from './mutation_types';
+
+export default {
+  [types.SET_ENDPOINT](state, endpoint) {
+    state.endpoint = endpoint;
+  },
+  [types.REQUEST_REPORTS](state) {
+    state.isLoading = true;
+  },
+  [types.RECEIVE_REPORTS_SUCCESS](state, response) {
+
+    state.isLoading = false;
+
+    state.summary.total = response.summary.total;
+    state.summary.resolved = response.summary.resolved;
+    state.summary.failed = response.summary.failed;
+
+    state.reports = response.suites;
+
+  },
+  [types.RECEIVE_REPORTS_ERROR](state) {
+    state.isLoading = false;
+    state.hasError = true;
+  },
+};

app/assets/javascripts/reports/store/state.js

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+export default () => ({
+  endpoint: null,
+
+  isLoading: false,
+  hasError: false,
+
+  summary: {
+    total: 0,
+    resolved: 0,
+    failed: 0,
+  },
+
+  /**
+   * Each report will have the following format:
+   * {
+   *   name: {String},
+   *   summary: {
+   *     total: {Number},
+   *     resolved: {Number},
+   *     failed: {Number},
+   *   },
+   *   new_failures: {Array.<Object>},
+   *   resolved_failures: {Array.<Object>},
+   *   existing_failures: {Array.<Object>},
+   * }
+   */
+  reports: [],
+});

changelogs/unreleased/45318-vuex-store.yml

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+---
+title: Adds Vuex store for reports section in MR widget
+merge_request: 20709
+author:
+type: added

spec/javascripts/reports/store/actions_spec.js

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+import MockAdapter from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
+import {
+  setEndpoint,
+  requestReports,
+  fetchReports,
+  stopPolling,
+  clearEtagPoll,
+  receiveReportsSuccess,
+  receiveReportsError,
+} from '~/reports/store/actions';
+import state from '~/reports/store/state';
+import * as types from '~/reports/store/mutation_types';
+import testAction from 'spec/helpers/vuex_action_helper';
+import { TEST_HOST } from 'spec/test_constants';
+
+describe('Reports Store Actions', () => {
+  let mockedState;
+
+  beforeEach(() => {
+    mockedState = state();
+  });
+
+  describe('setEndpoint', () => {
+    it('should commit SET_ENDPOINT mutation', done => {
+      testAction(
+        setEndpoint,
+        'endpoint.json',
+        mockedState,
+        [{ type: types.SET_ENDPOINT, payload: 'endpoint.json' }],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('requestReports', () => {
+    it('should commit REQUEST_REPORTS mutation', done => {
+      testAction(requestReports, null, mockedState, [{ type: types.REQUEST_REPORTS }], [], done);
+    });
+  });
+
+  describe('fetchReports', () => {
+    let mock;
+
+    beforeEach(() => {
+      mockedState.endpoint = `${TEST_HOST}/endpoint.json`;
+      mock = new MockAdapter(axios);
+    });
+
+    afterEach(() => {
+      mock.restore();
+      stopPolling();
+      clearEtagPoll();
+    });
+
+    describe('success', () => {
+      it('dispatches requestReports and receiveReportsSuccess ', done => {
+        mock.onGet(`${TEST_HOST}/endpoint.json`).replyOnce(200, { summary: {}, suites: [{ name: 'rspec' }] });
+
+        testAction(
+          fetchReports,
+          null,
+          mockedState,
+          [],
+          [
+            {
+              type: 'requestReports',
+            },
+            {
+              payload: { summary: {}, suites: [{ name: 'rspec' }] },
+              type: 'receiveReportsSuccess',
+            },
+          ],
+          done,
+        );
+      });
+    });
+
+    describe('error', () => {
+      beforeEach(() => {
+        mock.onGet(`${TEST_HOST}/endpoint.json`).reply(500);
+      });
+
+      it('dispatches requestReports and receiveReportsError ', done => {
+        testAction(
+          fetchReports,
+          null,
+          mockedState,
+          [],
+          [
+            {
+              type: 'requestReports',
+            },
+            {
+              type: 'receiveReportsError',
+            },
+          ],
+          done,
+        );
+      });
+    });
+  });
+
+  describe('receiveReportsSuccess', () => {
+    it('should commit RECEIVE_REPORTS_SUCCESS mutation', done => {
+      testAction(
+        receiveReportsSuccess,
+        { summary: {} },
+        mockedState,
+        [{ type: types.RECEIVE_REPORTS_SUCCESS, payload: { summary: {} } }],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('receiveReportsError', () => {
+    it('should commit RECEIVE_REPORTS_ERROR mutation', done => {
+      testAction(
+        receiveReportsError,
+        null,
+        mockedState,
+        [{ type: types.RECEIVE_REPORTS_ERROR }],
+        [],
+        done,
+      );
+    });
+  });
+});

spec/javascripts/reports/store/mutations_spec.js

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+import state from '~/reports/store/state';
+import mutations from '~/reports/store/mutations';
+import * as types from '~/reports/store/mutation_types';
+
+describe('Reports Store Mutations', () => {
+  let stateCopy;
+
+  beforeEach(() => {
+    stateCopy = state();
+  });
+
+  describe('SET_ENDPOINT', () => {
+    it('should set endpoint', () => {
+      mutations[types.SET_ENDPOINT](stateCopy, 'endpoint.json');
+      expect(stateCopy.endpoint).toEqual('endpoint.json');
+    });
+  });
+
+  describe('REQUEST_REPORTS', () => {
+    it('should set isLoading to true', () => {
+      mutations[types.REQUEST_REPORTS](stateCopy);
+      expect(stateCopy.isLoading).toEqual(true);
+    });
+  });
+
+  describe('RECEIVE_REPORTS_SUCCESS', () => {
+    const mockedResponse = {
+      summary: {
+        total: 14,
+        resolved: 0,
+        failed: 7,
+      },
+      suites: [
+        {
+          name: 'build:linux',
+          summary: {
+            total: 2,
+            resolved: 0,
+            failed: 1,
+          },
+          new_failures: [
+            {
+              name: 'StringHelper#concatenate when a is git and b is lab returns summary',
+              execution_time: 0.0092435,
+              system_output:
+                'Failure/Error: is_expected.to eq(\'gitlab\')',
+            },
+          ],
+          resolved_failures: [
+            {
+              name: 'StringHelper#concatenate when a is git and b is lab returns summary',
+              execution_time: 0.009235,
+              system_output:
+                'Failure/Error: is_expected.to eq(\'gitlab\')',
+            },
+          ],
+          existing_failures: [
+            {
+              name: 'StringHelper#concatenate when a is git and b is lab returns summary',
+              execution_time: 1232.08,
+              system_output:
+                'Failure/Error: is_expected.to eq(\'gitlab\')',
+            },
+          ],
+        },
+      ],
+    };
+
+    beforeEach(() => {
+      mutations[types.RECEIVE_REPORTS_SUCCESS](stateCopy, mockedResponse);
+    });
+
+    it('should reset isLoading', () => {
+      expect(stateCopy.isLoading).toEqual(false);
+    });
+
+    it('should set summary counts', () => {
+      expect(stateCopy.summary.total).toEqual(mockedResponse.summary.total);
+      expect(stateCopy.summary.resolved).toEqual(mockedResponse.summary.resolved);
+      expect(stateCopy.summary.failed).toEqual(mockedResponse.summary.failed);
+    });
+
+    it('should set reports', () => {
+      expect(stateCopy.reports).toEqual(mockedResponse.suites);
+    });
+  });
+
+  describe('RECEIVE_REPORTS_ERROR', () => {
+    beforeEach(() => {
+      mutations[types.RECEIVE_REPORTS_ERROR](stateCopy);
+    });
+    it('should reset isLoading', () => {
+      expect(stateCopy.isLoading).toEqual(false);
+    });
+
+    it('should set hasError to true', () => {
+      expect(stateCopy.hasError).toEqual(true);
+    });
+
+  });
+});