fix: refactoring version page / fix issue not found page #100 (#117)

* chore: refactoring version page

* refactor: migrate version page to hooks

* refactor: Version page better imports

* fix: #100 render not found on click item

* test: add test for version page

* chore: update mocks

* test: add scenario for not found package

* chore: fix wrong mock path

* chore: update mock

* chore: add todo list

src/App/AppError.tsx

@@ -0,0 +1,38 @@
+import React, { Component } from 'react';
+
+export interface ErrorProps {
+  children: any;
+}
+
+export interface ErrorAppState {
+  hasError: boolean;
+  error: any;
+  info: any;
+}
+
+export default class ErrorBoundary extends Component<ErrorProps, ErrorAppState> {
+  constructor(props) {
+    super(props);
+    this.state = { hasError: false, error: null, info: null };
+  }
+
+  componentDidCatch(error, info) {
+    this.setState({ hasError: true, error, info });
+  }
+
+  render() {
+    const { hasError, error, info } = this.state;
+    const { children } = this.props;
+
+    if (hasError) {
+      return (
+        <>
+          <h1>{'Something went wrong.'}</h1>
+          <p>{`error: ${error}`}</p>
+          <p>{`info: ${JSON.stringify(info)}`}</p>
+        </>
+      );
+    }
+    return children;
+  }
+}

src/components/ActionBar/ActionBar.test.tsx

@@ -19,7 +19,7 @@ describe('<ActionBar /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -35,7 +35,7 @@ describe('<ActionBar /> component', () => {
       latest: {},
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -57,7 +57,7 @@ describe('<ActionBar /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/ActionBar/ActionBar.tsx

@@ -6,7 +6,7 @@ import HomeIcon from '@material-ui/icons/Home';
 import List from '@material-ui/core/List';
 import Tooltip from '@material-ui/core/Tooltip';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/Version';
 import { Fab, ActionListItem } from './styles';
 import { isURL, extractFileName, downloadFile } from '../../utils/url';
 import api from '../../utils/api';

src/components/Author/Author.test.tsx

@@ -20,7 +20,7 @@ describe('<Author /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -39,7 +39,7 @@ describe('<Author /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -63,7 +63,7 @@ describe('<Author /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/Author/Author.tsx

@@ -4,7 +4,7 @@ import Avatar from '@material-ui/core/Avatar';
 import List from '@material-ui/core/List';
 import ListItemText from '@material-ui/core/ListItemText';
 
-import { DetailContextConsumer } from '../../pages/version/Version';
+import { DetailContextConsumer } from '../../pages/Version';
 import { Heading, AuthorListItem } from './styles';
 import { isEmail } from '../../utils/url';
 

src/components/Dependencies/Dependencies.tsx

@@ -2,7 +2,7 @@ import React, { Component, Fragment, ReactElement } from 'react';
 import { withRouter, RouteComponentProps } from 'react-router-dom';
 import CardContent from '@material-ui/core/CardContent';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/Version';
 
 import { CardWrap, Heading, Tags, Tag } from './styles';
 import NoItems from '../NoItems';

src/components/DetailContainer/DetailContainer.tsx

@@ -1,6 +1,6 @@
 import React, { Component, ReactElement, Fragment } from 'react';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/Version';
 import Readme from '../Readme';
 import Versions from '../Versions';
 import { preventXSS } from '../../utils/sec-utils';
@@ -14,6 +14,11 @@ interface DetailContainerState {
   tabPosition: number;
 }
 
+export const README_LABEL = 'Readme';
+export const DEPS_LABEL = 'Dependencies';
+export const VERSION_LABEL = 'Versions';
+export const UPLINKS_LABEL = 'Uplinks';
+
 class DetailContainer<P> extends Component<P, DetailContainerState> {
   public state = {
     tabPosition: 0,
@@ -37,10 +42,10 @@ class DetailContainer<P> extends Component<P, DetailContainerState> {
   private renderListTabs(tabPosition: number): React.ReactElement<HTMLElement> {
     return (
       <Tabs indicatorColor={'primary'} onChange={this.handleChange} textColor={'primary'} value={tabPosition} variant={'fullWidth'}>
-        <Tab id={'readme-tab'} label={'Readme'} />
-        <Tab id={'dependencies-tab'} label={'Dependencies'} />
-        <Tab id={'versions-tab'} label={'Versions'} />
-        <Tab id={'uplinks-tab'} label={'Uplinks'} />
+        <Tab data-testid={'readme-tab'} id={'readme-tab'} label={README_LABEL} />
+        <Tab data-testid={'dependencies-tab'} id={'dependencies-tab'} label={DEPS_LABEL} />
+        <Tab data-testid={'versions-tab'} id={'versions-tab'} label={VERSION_LABEL} />
+        <Tab data-testid={'uplinks-tab'} id={'uplinks-tab'} label={UPLINKS_LABEL} />
       </Tabs>
     );
   }

src/components/DetailSidebar/DetailSidebar.tsx

@@ -1,4 +1,4 @@
-import React, { Component, ReactElement } from 'react';
+import React, { ReactElement } from 'react';
 
 import Card from '@material-ui/core/Card';
 import CardContent from '@material-ui/core/CardContent';
@@ -12,76 +12,52 @@ import Engine from '../Engines/Engines';
 import Install from '../Install';
 import Repository from '../Repository/Repository';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { DetailContext } from '../../pages/Version';
 
 import { TitleListItem, TitleListItemText } from './styles';
 
-class DetailSidebar extends Component {
-  public render(): ReactElement<HTMLElement> {
-    return <DetailContextConsumer>{context => this.renderSideBar(context as VersionPageConsumerProps)}</DetailContextConsumer>;
-  }
+const renderCopyCLI = () => <Install />;
+const renderMaintainers = () => <Developers type="maintainers" />;
+const renderContributors = () => <Developers type="contributors" />;
+const renderRepository = () => <Repository />;
+const renderAuthor = () => <Author />;
+const renderEngine = () => <Engine />;
+const renderDist = () => <Dist />;
+const renderActionBar = () => <ActionBar />;
+const renderTitle = (packageName, packageMeta) => {
+  return (
+    <List className="detail-info">
+      <TitleListItem alignItems="flex-start">
+        <TitleListItemText primary={<b>{packageName}</b>} secondary={packageMeta.latest.description} />
+      </TitleListItem>
+    </List>
+  );
+};
 
-  private renderSideBar = ({ packageName, packageMeta }): ReactElement<HTMLElement> => {
-    return (
-      <div className={'sidebar-info'}>
-        <Card>
-          <CardContent>
-            {this.renderTitle(packageName, packageMeta)}
-            {this.renderActionBar()}
-            {this.renderCopyCLI()}
-            {this.renderRepository()}
-            {this.renderEngine()}
-            {this.renderDist()}
-            {this.renderAuthor()}
-            {this.renderMaintainers()}
-            {this.renderContributors()}
-          </CardContent>
-        </Card>
-      </div>
-    );
-  };
-
-  private renderTitle = (packageName, packageMeta) => {
-    return (
-      <List className="detail-info">
-        <TitleListItem alignItems="flex-start">
-          <TitleListItemText primary={<b>{packageName}</b>} secondary={packageMeta.latest.description} />
-        </TitleListItem>
-      </List>
-    );
-  };
-
-  private renderCopyCLI = () => {
-    return <Install />;
-  };
-
-  private renderMaintainers = () => {
-    return <Developers type="maintainers" />;
-  };
-
-  private renderContributors = () => {
-    return <Developers type="contributors" />;
-  };
-
-  private renderRepository = () => {
-    return <Repository />;
-  };
-
-  private renderAuthor = () => {
-    return <Author />;
-  };
-
-  private renderEngine = () => {
-    return <Engine />;
-  };
-
-  private renderDist = () => {
-    return <Dist />;
-  };
-
-  private renderActionBar = () => {
-    return <ActionBar />;
-  };
+function renderSideBar(packageName, packageMeta): ReactElement<HTMLElement> {
+  return (
+    <div className={'sidebar-info'}>
+      <Card>
+        <CardContent>
+          {renderTitle(packageName, packageMeta)}
+          {renderActionBar()}
+          {renderCopyCLI()}
+          {renderRepository()}
+          {renderEngine()}
+          {renderDist()}
+          {renderAuthor()}
+          {renderMaintainers()}
+          {renderContributors()}
+        </CardContent>
+      </Card>
+    </div>
+  );
 }
 
+const DetailSidebar = () => {
+  const { packageName, packageMeta } = React.useContext(DetailContext);
+
+  return renderSideBar(packageName, packageMeta);
+};
+
 export default DetailSidebar;

src/components/Developers/Developers.test.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { mount } from 'enzyme';
 import Developers, { DevelopersType } from './Developers';
 import { Fab } from './styles';
-import { DetailContextProvider } from '../../pages/version/Version';
+import { DetailContextProvider } from '../../pages/Version';
 
 describe('test Developers', () => {
   const packageMeta = {

src/components/Developers/Developers.tsx

@@ -1,7 +1,7 @@
 import React, { FC, Fragment } from 'react';
 import Add from '@material-ui/icons/Add';
 
-import { DetailContext } from '../../pages/version/Version';
+import { DetailContext } from '../../pages/Version';
 import { AvatarTooltip } from '../AvatarTooltip';
 import { Details, Heading, Content, Fab } from './styles';
 

src/components/Dist/Dist.test.tsx

@@ -18,7 +18,7 @@ describe('<Dist /> component', () => {
         license: '',
       },
     };
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -41,7 +41,7 @@ describe('<Dist /> component', () => {
         license: 'MIT',
       },
     };
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -67,7 +67,7 @@ describe('<Dist /> component', () => {
         },
       },
     };
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/Dist/Dist.tsx

@@ -2,7 +2,7 @@ import React, { Component } from 'react';
 
 import List from '@material-ui/core/List';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { VersionPageConsumerProps, DetailContextConsumer } from '../../pages/Version';
 import { Heading, DistListItem, DistChips } from './styles';
 import fileSizeSI from '../../utils/file-size';
 import { PackageMetaInterface } from 'types/packageMeta';

src/components/Engines/Engines.test.tsx

@@ -19,7 +19,7 @@ describe('<Engines /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -35,7 +35,7 @@ describe('<Engines /> component', () => {
       latest: {},
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -53,7 +53,7 @@ describe('<Engines /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/Engines/Engines.tsx

@@ -5,7 +5,7 @@ import Grid from '@material-ui/core/Grid';
 import List from '@material-ui/core/List';
 import ListItemText from '@material-ui/core/ListItemText';
 
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { VersionPageConsumerProps, DetailContextConsumer } from '../../pages/Version';
 import { Heading, EngineListItem } from './styles';
 // @ts-ignore
 import node from './img/node.png';

src/components/Install/Install.tsx

@@ -2,8 +2,8 @@ import List from '@material-ui/core/List';
 import ListItemText from '@material-ui/core/ListItemText';
 import React, { Component } from 'react';
 
-// @ts-ignore
-import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/version/Version';
+import { DetailContextConsumer, VersionPageConsumerProps } from '../../pages/Version';
+
 import CopyToClipBoard from '../CopyToClipBoard';
 
 // logos of package managers

src/components/Loading/Loading.tsx

@@ -6,7 +6,7 @@ import Spinner from '../Spinner';
 import { Wrapper, Badge } from './styles';
 
 const Loading: React.FC = () => (
-  <Wrapper>
+  <Wrapper data-testid="loading">
     <Badge>
       <Logo size={Size.Big} />
     </Badge>

src/components/Loading/__snapshots__/Loading.test.tsx.snap

@@ -1,3 +1,3 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`<Loading /> component should render the component in default state 1`] = `"<div class=\\"css-1221txa eimgwje0\\"><div class=\\"css-bxochs eimgwje1\\"><div class=\\"css-ge0nak em793ed0\\"></div></div><div class=\\"css-vqrgi e1ag4h8b0\\"><div class=\\"MuiCircularProgress-root-1 MuiCircularProgress-colorPrimary-4 MuiCircularProgress-indeterminate-3 css-15gl0ho e1ag4h8b1\\" style=\\"width:50px;height:50px\\" role=\\"progressbar\\"><svg class=\\"MuiCircularProgress-svg-6\\" viewBox=\\"22 22 44 44\\"><circle class=\\"MuiCircularProgress-circle-7 MuiCircularProgress-circleIndeterminate-9\\" cx=\\"44\\" cy=\\"44\\" r=\\"20.2\\" fill=\\"none\\" stroke-width=\\"3.6\\"></circle></svg></div></div></div>"`;
+exports[`<Loading /> component should render the component in default state 1`] = `"<div data-testid=\\"loading\\" class=\\"css-1221txa eimgwje0\\"><div class=\\"css-bxochs eimgwje1\\"><div class=\\"css-ge0nak em793ed0\\"></div></div><div class=\\"css-vqrgi e1ag4h8b0\\"><div class=\\"MuiCircularProgress-root-1 MuiCircularProgress-colorPrimary-4 MuiCircularProgress-indeterminate-3 css-15gl0ho e1ag4h8b1\\" style=\\"width:50px;height:50px\\" role=\\"progressbar\\"><svg class=\\"MuiCircularProgress-svg-6\\" viewBox=\\"22 22 44 44\\"><circle class=\\"MuiCircularProgress-circle-7 MuiCircularProgress-circleIndeterminate-9\\" cx=\\"44\\" cy=\\"44\\" r=\\"20.2\\" fill=\\"none\\" stroke-width=\\"3.6\\"></circle></svg></div></div></div>"`;

src/components/NotFound/NotFound.tsx

@@ -1,46 +1,43 @@
 import ListItem from '@material-ui/core/ListItem';
 import Typography from '@material-ui/core/Typography';
 import withWidth, { isWidthUp } from '@material-ui/core/withWidth';
-import React from 'react';
+import React, { useCallback } from 'react';
 import { RouteComponentProps, withRouter } from 'react-router-dom';
 
 import PackageImg from './img/package.svg';
 import { Card, EmptyPackage, Heading, Inner, List, Wrapper } from './styles';
 import { Breakpoint } from '@material-ui/core/styles/createBreakpoints';
 
-export const NOT_FOUND_TEXT = "Sorry, we couldn't find it...";
+export const NOT_FOUND_TEXT = `Sorry, we couldn't find it...`;
+export const LABEL_NOT_FOUND = `The page you're looking for doesn't exist.`;
+export const LABEL_FOOTER_NOT_FOUND = 'Perhaps these links will help find what you are looking for:';
 
 export type NotFoundProps = RouteComponentProps & { width: Breakpoint; history };
 
-const NotFound: React.FC<NotFoundProps> = ({ history, width }) => {
-  const handleGoTo = (to: string): (() => void | undefined) => () => {
-    history.push(to);
-  };
+const HOME_LABEL = 'Home';
 
-  const handleGoBack = (): ((e: React.MouseEvent<HTMLElement, MouseEvent>) => void | undefined) => () => {
-    history.goBack();
-  };
+const renderSubTitle = (): JSX.Element => (
+  <Typography variant="subtitle1">
+    <div>{LABEL_NOT_FOUND}</div>
+    <div>{LABEL_FOOTER_NOT_FOUND}</div>
+  </Typography>
+);
+
+const NotFound: React.FC<NotFoundProps> = ({ history, width }) => {
+  const handleGomHome = useCallback(() => {
+    history.push('/');
+  }, [history]);
 
   const renderList = (): JSX.Element => (
     <List>
-      <ListItem button={true} divider={true} onClick={handleGoTo('/')}>
-        {'Home'}
-      </ListItem>
-      <ListItem button={true} divider={true} onClick={handleGoBack()}>
-        {'Back'}
+      <ListItem button={true} divider={true} onClick={handleGomHome}>
+        {HOME_LABEL}
       </ListItem>
     </List>
   );
 
-  const renderSubTitle = (): JSX.Element => (
-    <Typography variant="subtitle1">
-      <div>{"The page you're looking for doesn't exist."}</div>
-      <div>{'Perhaps these links will help find what you are looking for:'}</div>
-    </Typography>
-  );
-
   return (
-    <Wrapper>
+    <Wrapper data-testid="404">
       <Inner>
         <EmptyPackage alt="404 - Page not found" src={PackageImg} />
         <Heading className="not-found-text" variant={isWidthUp('sm', width) ? 'h2' : 'h4'}>

src/components/Repository/Repository.test.tsx

@@ -18,7 +18,7 @@ describe('<Repository /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -34,7 +34,7 @@ describe('<Repository /> component', () => {
       latest: {},
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },
@@ -55,7 +55,7 @@ describe('<Repository /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/Repository/Repository.tsx

@@ -5,7 +5,7 @@ import Avatar from '@material-ui/core/Avatar';
 import List from '@material-ui/core/List';
 import ListItemText from '@material-ui/core/ListItemText';
 
-import { DetailContextConsumer } from '../../pages/version/Version';
+import { DetailContextConsumer } from '../../pages/Version';
 import CopyToClipBoard from '../CopyToClipBoard';
 
 import { Heading, GithubLink, RepositoryListItem } from './styles';

src/components/UpLinks/UpLinks.tsx

@@ -2,7 +2,7 @@ import React, { ReactElement } from 'react';
 import List from '@material-ui/core/List';
 import ListItem from '@material-ui/core/ListItem';
 
-import { DetailContextConsumer } from '../../pages/version/Version';
+import { DetailContextConsumer } from '../../pages/Version';
 import NoItems from '../NoItems';
 import { formatDateDistance } from '../../utils/package';
 

src/components/Versions/Versions.test.tsx

@@ -29,7 +29,7 @@ describe('<Version /> component', () => {
       },
     };
 
-    jest.doMock('../../pages/version/Version', () => ({
+    jest.doMock('../../pages/Version', () => ({
       DetailContextConsumer: component => {
         return component.children({ packageMeta });
       },

src/components/Versions/Versions.tsx

@@ -1,10 +1,11 @@
-import { DetailContextConsumer } from '../../pages/version/Version';
-import { formatDateDistance } from '../../utils/package';
-import { Heading, Spacer, ListItemText } from './styles';
+import React, { ReactElement } from 'react';
 import List from '@material-ui/core/List';
 import ListItem from '@material-ui/core/ListItem';
-import React, { ReactElement } from 'react';
+
+import { DetailContextConsumer } from '../../pages/Version';
+import { formatDateDistance } from '../../utils/package';
 import { DIST_TAGS } from '../../../lib/constants';
+import { Heading, Spacer, ListItemText } from './styles';
 
 const NOT_AVAILABLE = 'Not available';
 

src/pages/Version/Layout.tsx

@@ -0,0 +1,27 @@
+import React, { FC, ReactElement } from 'react';
+import Grid from '@material-ui/core/Grid';
+import DetailContainer from '../../components/DetailContainer';
+import DetailSidebar from '../../components/DetailSidebar';
+
+function renderDetail(): ReactElement<HTMLElement> {
+  return <DetailContainer />;
+}
+
+function renderSidebar(): ReactElement<HTMLElement> {
+  return <DetailSidebar />;
+}
+
+const Layout: FC<{}> = () => {
+  return (
+    <Grid className={'container content'} container={true} data-testid="version-layout" spacing={0}>
+      <Grid item={true} xs={8}>
+        {renderDetail()}
+      </Grid>
+      <Grid item={true} xs={4}>
+        {renderSidebar()}
+      </Grid>
+    </Grid>
+  );
+};
+
+export { Layout };

src/pages/Version/Version.test.tsx

@@ -0,0 +1,96 @@
+import React from 'react';
+import { render, cleanup } from '@testing-library/react';
+
+import { MemoryRouter } from 'react-router';
+
+import vueMetadata from '../../../test/fixtures/metadata/vue.json';
+
+import Version from './Version';
+import { waitForElement } from '@testing-library/dom';
+import ErrorBoundary from '../../App/AppError';
+import { LABEL_NOT_FOUND } from '../../components/NotFound/NotFound';
+// import { NOT_FOUND_TEXT } from '../../components/NotFound/NotFound';
+
+// :-) we mock this otherways fails on render, some weird issue on material-ui
+jest.mock('@material-ui/core/Avatar');
+
+describe('test Version page', () => {
+  beforeAll(() => {
+    // FIXME: a better way to mock this
+    // @ts-ignore
+    global.window.VERDACCIO_API_URL = 'http://test';
+  });
+
+  afterEach(() => {
+    cleanup();
+  });
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  test('should render the version page', async () => {
+    const readmeText = 'test';
+    // @ts-ignore
+    fetch.mockResponses(
+      [[JSON.stringify(vueMetadata)], { status: 200, headers: { 'content-type': 'application/json' } }],
+      [[`<p align="center">${readmeText}</p>`], { status: 200, headers: { 'content-type': 'text/html' } }]
+    );
+
+    const { getByTestId, getByText } = render(
+      <ErrorBoundary>
+        <MemoryRouter>
+          <Version match={{ params: { ['package']: 'vue' } }}></Version>
+        </MemoryRouter>
+      </ErrorBoundary>
+    );
+
+    // first it display loading
+    const hasLoading = getByTestId('loading');
+    expect(hasLoading).toBeTruthy();
+
+    // we wait fetch response (mocked above)
+    await waitForElement(() => getByTestId('version-layout'));
+
+    // check whether readme was loaded
+    const hasReadme = getByText(readmeText);
+
+    expect(hasReadme).toBeTruthy();
+  });
+
+  test('should render 404 page if the resources are not found', async () => {
+    // @ts-ignore
+    fetch.mockResponses(
+      [[JSON.stringify({})], { status: 404, headers: { 'content-type': 'application/json' } }],
+      [[``], { status: 404, headers: { 'content-type': 'text/html' } }]
+    );
+
+    const { getByTestId, getByText } = render(
+      <ErrorBoundary>
+        <MemoryRouter>
+          <Version match={{ params: { ['package']: 'vue' } }}></Version>
+        </MemoryRouter>
+      </ErrorBoundary>
+    );
+
+    // first it display loading
+    const hasLoading = getByTestId('loading');
+    expect(hasLoading).toBeTruthy();
+
+    // we wait fetch response (mocked above)
+    await waitForElement(() => getByTestId('404'));
+
+    // check whether readme was loaded
+    const hasReadme = getByText(LABEL_NOT_FOUND);
+
+    expect(hasReadme).toBeTruthy();
+  });
+
+  // Wanna contribute? Here we some scenarios we need to test
+
+  test.todo('should test click on tabs');
+  test.todo('should check what is rendered int he sidebar is correct');
+  test.todo('should test click back home on 404');
+  test.todo('should test click on elements in the sidebar');
+  test.todo('should test other not consider scenarios');
+});

src/pages/Version/Version.tsx

@@ -0,0 +1,69 @@
+import React, { useEffect, useState } from 'react';
+
+import { callDetailPage, callReadme } from '../../utils/calls';
+import { buildScopePackage } from '../../utils/package';
+import Loading from '../../components/Loading/Loading';
+import NotFound from '../../components/NotFound';
+
+import { Layout } from './Layout';
+import { DetailContextProvider } from './context';
+import { StateInterface } from './types';
+
+export function getRouterPackageName(params): string {
+  const packageName = params.package;
+  const { scope } = params;
+  if (scope) {
+    return buildScopePackage(scope, packageName);
+  }
+
+  return packageName;
+}
+
+const Version = ({ match: { params } }) => {
+  const pkgName = getRouterPackageName(params);
+  const [readMe, setReadme] = useState();
+  const [packageName, setPackageName] = useState(pkgName);
+  const [packageMeta, setPackageMeta] = useState();
+  const [isLoading, setIsLoading] = useState(true);
+  const [notFound, setNotFound] = useState(false);
+
+  useEffect(() => {
+    (async () => {
+      try {
+        const packageMeta = (await callDetailPage(packageName)) as Partial<StateInterface>;
+        const readMe = (await callReadme(packageName)) as Partial<StateInterface>;
+        setReadme(readMe);
+        setPackageMeta(packageMeta);
+        setIsLoading(false);
+      } catch (error) {
+        setNotFound(true);
+        setIsLoading(false);
+      }
+    })();
+  }, [packageName]);
+
+  useEffect(() => {
+    document.title = `Verdaccio - ${packageName}`;
+  }, [packageName]);
+
+  useEffect(() => {
+    const pkgName = getRouterPackageName(params);
+
+    setPackageName(pkgName);
+  }, [params]);
+
+  const isNotFound = notFound || typeof packageMeta === 'undefined' || typeof packageName === 'undefined' || typeof readMe === 'undefined';
+  const renderContent = (): React.ReactElement<HTMLElement> => {
+    if (isLoading) {
+      return <Loading />;
+    } else if (isNotFound) {
+      return <NotFound />;
+    } else {
+      return <Layout />;
+    }
+  };
+
+  return <DetailContextProvider value={{ packageMeta, readMe, packageName, enableLoading: setIsLoading }}>{renderContent()}</DetailContextProvider>;
+};
+
+export default Version;

src/pages/Version/context.ts

@@ -0,0 +1,7 @@
+import React, { Consumer, Provider } from 'react';
+import { DetailContextProps, VersionPageConsumerProps } from './types';
+
+export const DetailContext = React.createContext<Partial<DetailContextProps>>({});
+
+export const DetailContextProvider: Provider<Partial<VersionPageConsumerProps>> = DetailContext.Provider;
+export const DetailContextConsumer: Consumer<Partial<VersionPageConsumerProps>> = DetailContext.Consumer;

src/pages/Version/index.ts

@@ -0,0 +1,3 @@
+export { DetailContextProps, VersionPageConsumerProps } from './types';
+export { DetailContext, DetailContextConsumer, DetailContextProvider } from './context';
+export { default } from './Version';

src/pages/Version/types.ts

@@ -0,0 +1,28 @@
+import { PackageMetaInterface } from '../../../types/packageMeta';
+
+export interface DetailContextProps {
+  packageMeta: PackageMetaInterface;
+  readMe: string;
+  packageName: string;
+  enableLoading: () => void;
+}
+
+export interface VersionPageConsumerProps {
+  packageMeta: PackageMetaInterface;
+  readMe: string;
+  packageName: string;
+  // FIXME: looking for the appropiated type here
+  enableLoading: any;
+}
+
+export interface PropsInterface {
+  match: boolean;
+}
+
+export interface StateInterface {
+  readMe: string;
+  packageName: string;
+  packageMeta?: PackageMetaInterface;
+  isLoading: boolean;
+  notFound: boolean;
+}

src/pages/version/Version.tsx

@@ -1,160 +0,0 @@
-import React, { Component, ReactElement, Consumer, Provider } from 'react';
-import Grid from '@material-ui/core/Grid';
-import Loading from '../../components/Loading/Loading';
-import DetailContainer from '../../components/DetailContainer/DetailContainer';
-import DetailSidebar from '../../components/DetailSidebar/DetailSidebar';
-import { callDetailPage } from '../../utils/calls';
-import { getRouterPackageName } from '../../utils/package';
-import NotFound from '../../components/NotFound';
-import { PackageMetaInterface } from '../../../types/packageMeta';
-
-export interface DetailContextProps {
-  packageMeta: PackageMetaInterface;
-  readMe: string;
-  packageName: string;
-  enableLoading: () => void;
-}
-
-export const DetailContext = React.createContext<Partial<DetailContextProps>>({});
-
-export interface VersionPageConsumerProps {
-  packageMeta: PackageMetaInterface;
-  readMe: string;
-  packageName: string;
-  enableLoading: () => void;
-}
-
-export const DetailContextProvider: Provider<Partial<VersionPageConsumerProps>> = DetailContext.Provider;
-export const DetailContextConsumer: Consumer<Partial<VersionPageConsumerProps>> = DetailContext.Consumer;
-
-interface PropsInterface {
-  match: boolean;
-}
-
-interface StateInterface {
-  readMe: string;
-  packageName: string;
-  packageMeta: PackageMetaInterface | null;
-  isLoading: boolean;
-  notFound: boolean;
-}
-
-class VersionPage extends Component<PropsInterface, Partial<StateInterface>> {
-  constructor(props) {
-    super(props);
-
-    this.state = {
-      readMe: '',
-      packageName: getRouterPackageName(props.match),
-      packageMeta: null,
-      isLoading: true,
-      notFound: false,
-    };
-  }
-
-  public static getDerivedStateFromProps(nextProps, prevState): { packageName?: string; isLoading: boolean; notFound?: boolean } | null {
-    const { match } = nextProps;
-    const packageName = getRouterPackageName(match);
-
-    if (packageName !== prevState.packageName) {
-      try {
-        return {
-          packageName,
-          isLoading: false,
-        };
-      } catch (err) {
-        return {
-          notFound: true,
-          isLoading: false,
-        };
-      }
-    } else {
-      return null;
-    }
-  }
-
-  public async componentDidMount(): Promise<void> {
-    await this.loadPackageInfo();
-  }
-
-  /* eslint no-unused-vars: 0 */
-  public async componentDidUpdate(nextProps, prevState: StateInterface): Promise<void> {
-    const { packageName } = this.state;
-    if (packageName !== prevState.packageName) {
-      const { readMe, packageMeta } = (await callDetailPage(packageName)) as Partial<StateInterface>;
-      this.setState({
-        readMe,
-        packageMeta,
-        packageName,
-        notFound: false,
-        isLoading: false,
-      });
-    }
-  }
-
-  public render(): ReactElement<HTMLElement> {
-    const { isLoading, packageMeta, readMe, packageName } = this.state;
-
-    if (isLoading) {
-      return <Loading />;
-    } else if (!packageMeta) {
-      return <NotFound />;
-    } else {
-      return (
-        <DetailContextProvider value={{ packageMeta, readMe, packageName, enableLoading: this.enableLoading }}>
-          <Grid className={'container content'} container={true} spacing={0}>
-            <Grid item={true} xs={8}>
-              {this.renderDetail()}
-            </Grid>
-            <Grid item={true} xs={4}>
-              {this.renderSidebar()}
-            </Grid>
-          </Grid>
-        </DetailContextProvider>
-      );
-    }
-  }
-
-  public async loadPackageInfo(): Promise<void> {
-    const { packageName } = this.state;
-    // FIXME: use utility
-    document.title = `Verdaccio - ${packageName}`;
-
-    this.setState({
-      readMe: '',
-    });
-
-    try {
-      const { readMe, packageMeta } = (await callDetailPage(packageName)) as Partial<StateInterface>;
-      this.setState({
-        readMe,
-        packageMeta,
-        packageName,
-        notFound: false,
-        isLoading: false,
-      });
-    } catch (err) {
-      this.setState({
-        notFound: true,
-        packageName,
-        isLoading: false,
-      });
-    }
-  }
-
-  public enableLoading = () => {
-    this.setState({
-      isLoading: true,
-    });
-  };
-
-  public renderDetail(): ReactElement<HTMLElement> {
-    return <DetailContainer />;
-  }
-
-  public renderSidebar(): ReactElement<HTMLElement> {
-    return <DetailSidebar />;
-  }
-}
-
-export default VersionPage;

src/pages/version/index.ts

@@ -1 +0,0 @@
-export { default, DetailContextProps } from './Version';

src/router.tsx

@@ -13,7 +13,7 @@ const history = createBrowserHistory({
 });
 
 const NotFound = asyncComponent(() => import('./components/NotFound'));
-const VersionPackage = asyncComponent(() => import('./pages/version/Version'));
+const VersionPackage = asyncComponent(() => import('./pages/Version'));
 const HomePage = asyncComponent(() => import('./pages/home'));
 
 interface RouterAppProps {

src/utils/calls.ts

@@ -1,14 +1,12 @@
 import API from './api';
 import { PackageMetaInterface } from 'types/packageMeta';
 
-export interface DetailPage {
-  readMe: string | {};
-  packageMeta: PackageMetaInterface | {};
+export async function callReadme(packageName): Promise<string | {}> {
+  return await API.request<string | {}>(`package/readme/${packageName}`, 'GET');
 }
 
-export async function callDetailPage(packageName): Promise<DetailPage> {
-  const readMe = await API.request<string | {}>(`package/readme/${packageName}`, 'GET');
+export async function callDetailPage(packageName): Promise<PackageMetaInterface | {}> {
   const packageMeta = await API.request<PackageMetaInterface | {}>(`sidebar/${packageName}`, 'GET');
 
-  return { readMe, packageMeta };
+  return packageMeta;
 }

src/utils/package.ts

@@ -56,14 +56,8 @@ export function formatDateDistance(lastUpdate): string {
   return distanceInWordsToNow(new Date(lastUpdate));
 }
 
-export function getRouterPackageName(match): string {
-  const packageName = match.params.package;
-  const scope = match.params.scope;
-  if (scope) {
-    return `@${scope}/${packageName}`;
-  }
-
-  return packageName;
+export function buildScopePackage(scope: string, packageName: string) {
+  return `@${scope}/${packageName}`;
 }
 
 /**