test: Add tests for avgTimePerIssueLabel

src/helpers/types.ts

@@ -112,8 +112,8 @@ export type Issue = {
   state: StateGL;
   created_at: string;
   updated_at: string;
-  closed_at: string;
-  closed_by: string;
+  closed_at: string | null;
+  closed_by: string | null;
   labels: string[];
   milestone: Milestone;
   assignees: [];

src/tests/App.test.tsx

-import { render } from '@testing-library/react';
-import React from 'react';
-import App from '../App';
-
-test('renders learn react link', () => {
-  render(<App />);
-  const a = true;
-  const b = true;
-  expect(a).toEqual(b);
-});

src/tests/calculations.test.ts

+import { BarDataItem } from '../helpers/types';
+import { avgTimePerIssueLabel } from './../pages/TimePerIssueLabelPage/utils';
+import { ISSUE_1, NON_CLOSED_ISSUES, NO_DATA, USED_LABELS } from './dummydata';
+
+describe('Testing that the avgTimePerIssueLabel works as expected', () => {
+  test('Test that for an empty issuelist, an empty list is returned', () => {
+    const result = avgTimePerIssueLabel([], USED_LABELS);
+    expect(result).toEqual(NO_DATA);
+  });
+
+  test('Test that for a single issue, the time used for that issue is returned', () => {
+    const result = avgTimePerIssueLabel([ISSUE_1], USED_LABELS);
+    if (ISSUE_1.closed_at == null) return fail();
+    const expected_ms =
+      new Date(ISSUE_1.closed_at).getTime() - new Date(ISSUE_1.created_at).getTime();
+    const expected_h = expected_ms / (60 * 60 * 1000);
+    const expected: BarDataItem[] = NO_DATA.map((barItem) => ({
+      ...barItem,
+      barValue: expected_h,
+    }));
+    expect(result).toEqual(expected);
+  });
+
+  test('Test that for a list of an issue with no closed issues, an empty list is returned', () => {
+    const result = avgTimePerIssueLabel(NON_CLOSED_ISSUES, USED_LABELS);
+    expect(result).toEqual(NO_DATA);
+  });
+});

src/tests/dummydata.ts

+import { Label } from '../helpers/constants';
+import { BarDataItem, Issue } from '../helpers/types';
+
+// Other created issues owerwrite this, as most is not used data.
+const issueRest: Issue = {
+  id: 2,
+  iid: 2,
+  project_id: 2,
+  state: 'active',
+  title: 'Some issue',
+  description: '',
+  created_at: '',
+  closed_at: null,
+  labels: [''],
+  updated_at: '',
+  closed_by: '',
+  milestone: {
+    id: 2,
+    iid: 2,
+    project_id: '',
+    title: '',
+    description: '',
+    state: 'active',
+    created_at: '',
+    updated_at: '',
+    due_date: '',
+    start_date: '',
+    expired: '',
+    web_url: '',
+  },
+  assignees: [],
+  author: {
+    id: 3,
+    name: 'hei',
+    username: 'hei',
+    state: 'active',
+    avatar_url: 'hei',
+    web_url: 'hei',
+  },
+  type: 'ISSUE',
+  assignee: [],
+  user_notes_count: 2,
+  merge_requests_count: 2,
+  upvotes: 2,
+  downvotes: 2,
+  due_date: '',
+  confidential: false,
+  discussion_locked: null,
+  issue_type: 'issue',
+  web_url: '',
+  time_stats: {
+    time_estimate: 4,
+    total_time_spent: 4,
+    human_time_estimate: null,
+    human_total_time_spent: null,
+  },
+  task_completion_status: { count: 5, completed_count: 5 },
+  has_tasks: true,
+  _links: { self: 'hei', notes: 'hei', award_emoji: 'hei', project: 'hei' },
+  references: { short: 'dfsf', relative: 'dfsf', full: 'dfsf' },
+  moved_to_id: null,
+  service_desk_reply_to: null,
+};
+
+/* type IssueMatters = {
+  title: string;
+  description: string;
+  created_at: string;
+  closed_at: string;
+  labels: string[];
+}; */
+
+export const ISSUE_1: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-09T11:47:21.510+02:00"',
+  closed_at: '2021-09-27T13:30:39.518+02:00',
+  labels: [Label.API, Label.BROWSER_STORAGE, Label.IMPORTANT],
+};
+
+export const ISSUE_2: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-01T11:47:21.510+02:00"',
+  closed_at: '2021-09-10T13:30:39.518+02:00',
+  labels: [Label.API],
+};
+
+export const ISSUE_3: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-09T11:47:21.510+02:00"',
+  closed_at: '2021-09-11T13:30:39.518+02:00',
+  labels: [Label.BROWSER_STORAGE],
+};
+
+export const ISSUE_4: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-08T11:47:21.510+02:00"',
+  closed_at: '2021-09-11T13:30:39.518+02:00',
+  labels: [Label.API],
+};
+
+export const ISSUE_5: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-08T11:47:21.510+02:00"',
+  labels: [Label.BROWSER_STORAGE, Label.IMPORTANT],
+};
+
+export const ISSUE_6: Issue = {
+  ...issueRest,
+  created_at: '"2021-09-08T11:47:21.510+02:00"',
+  labels: [Label.IMPORTANT],
+};
+
+export const USED_LABELS = [Label.API, Label.BROWSER_STORAGE, Label.IMPORTANT];
+
+export const ALL_ISSUES = [ISSUE_1, ISSUE_2, ISSUE_3, ISSUE_4, ISSUE_5, ISSUE_6];
+
+export const NON_CLOSED_ISSUES = [ISSUE_5, ISSUE_6];
+
+export const NO_DATA: BarDataItem[] = USED_LABELS.reduce((data: BarDataItem[], label) => {
+  return [
+    ...data,
+    {
+      barLabel: label,
+      barValue: 0,
+    },
+  ];
+}, []);