diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a80f994..85abd2b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,4 +38,7 @@ jobs:
         run: yarn lint
 
       - name: Test 🔧
-        run: yarn test
+        run: yarn test -- --coverage
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1
diff --git a/src/components/Header.test.tsx b/src/components/Header.test.tsx
new file mode 100644
index 0000000..c50e4ad
--- /dev/null
+++ b/src/components/Header.test.tsx
@@ -0,0 +1,60 @@
+/* eslint-disable react/jsx-props-no-spreading */
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+/* eslint-disable no-await-in-loop */
+/* eslint-disable no-restricted-syntax */
+import React from 'react';
+import { fireEvent, render, RenderResult, waitFor } from '@testing-library/react';
+
+import Header from './Header';
+
+const mockChangeLanguage = jest.fn();
+
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (k: string) => k,
+    i18n: {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      changeLanguage: mockChangeLanguage,
+      language: undefined,
+    },
+  }),
+}));
+
+describe('Header', () => {
+  it('opens the language menu list when the button is clicked', async () => {
+    const { getByTestId } = render(<Header />);
+
+    const languageMenuToggle = getByTestId('language-menu-toggle');
+    expect(languageMenuToggle).toBeInTheDocument();
+
+    fireEvent.click(languageMenuToggle);
+
+    expect(getByTestId('locale-en')).toBeInTheDocument();
+  });
+
+  describe('with open language menu', () => {
+    let component: RenderResult | null;
+
+    beforeEach(() => {
+      component = render(<Header />);
+      const languageMenuToggle = component.getByTestId('language-menu-toggle');
+      fireEvent.click(languageMenuToggle);
+    });
+
+    it('changes the language when an item is clicked', () => {
+      fireEvent.click(component!.getByTestId('locale-en'));
+
+      expect(mockChangeLanguage).toBeCalledWith('en');
+    });
+
+    it('closes the menu with escape', async () => {
+      fireEvent.keyDown(component!.getByTestId('language-menu'), { key: 'Escape' });
+
+      await waitFor(() =>
+        expect(
+          component!.container.querySelector('[data-testid="locale-en"]')
+        ).not.toBeInTheDocument()
+      );
+    });
+  });
+});
diff --git a/src/components/Header.tsx b/src/components/Header.tsx
index 580f544..73311de 100644
--- a/src/components/Header.tsx
+++ b/src/components/Header.tsx
@@ -37,6 +37,7 @@ const Header: FunctionComponent = () => {
         <div style={{ flexGrow: 1 }} />
         <Box position="relative">
           <Button
+            data-testid="language-menu-toggle"
             aria-controls="language-menu"
             aria-haspopup="true"
             color="secondary"
@@ -51,12 +52,18 @@ const Header: FunctionComponent = () => {
           </Button>
           <Menu
             id="language-menu"
+            data-testid="language-menu"
             open={showLanguageSwitch}
             anchorEl={languageSwitchAnchorEl.current}
             onClose={() => toggleLanguageSwitch(false)}
           >
             {Object.keys(locales).map((l) => (
-              <MenuItem key={l} value={l} onClick={() => handleLanguageChange(l)}>
+              <MenuItem
+                key={l}
+                value={l}
+                onClick={() => handleLanguageChange(l)}
+                data-testid={`locale-${l}`}
+              >
                 <Checkbox size="small" checked={i18n.language === l} /> {t(locales[l])}
               </MenuItem>
             ))}
diff --git a/src/containers/home/components/ProfileDetails.test.tsx b/src/containers/home/components/ProfileDetails.test.tsx
index 9104839..def1dce 100644
--- a/src/containers/home/components/ProfileDetails.test.tsx
+++ b/src/containers/home/components/ProfileDetails.test.tsx
@@ -38,18 +38,58 @@ const testProfile1: Profile = {
 
 const testProfile2: Profile = {
   build_at: '2020-12-08 13:51:01',
-  target: 'TEST_TARGET',
-  version_code: 'TEST_VERSION_CODE',
-  version_number: 'TEST_VERSION_NUMBER',
-  id: 'TEST_ID',
+  target: 'TEST_TARGET_2',
+  version_code: 'TEST_VERSION_CODE_2',
+  version_number: 'TEST_VERSION_NUMBER_2',
+  id: 'TEST_ID_2',
   titles: [
     {
       title: 'TEST_TITLE2',
     },
   ],
+  images: [
+    {
+      name: 'factorytestimage',
+      type: 'factory',
+      sha256: 'sha256',
+    },
+    {
+      name: 'kerneltestimage',
+      type: 'kernel',
+      sha256: 'sha256',
+    },
+    {
+      name: 'roottestimage',
+      type: 'root',
+      sha256: 'sha256',
+    },
+    {
+      name: 'tftptestimage',
+      type: 'tftp',
+      sha256: 'sha256',
+    },
+    {
+      name: 'sdcardtestimage',
+      type: 'sdcard',
+      sha256: 'sha256',
+    },
+    {
+      name: 'randomtestimage',
+      type: 'random',
+      sha256: 'sha256',
+    },
+  ],
 };
 
-const testProfiles = [testProfile1, testProfile2];
+const testProfile3: Profile = {
+  build_at: '2020-12-08 13:51:01',
+  target: 'TEST_TARGET_3',
+  version_code: 'TEST_VERSION_CODE_3',
+  version_number: 'TEST_VERSION_NUMBER_3',
+  id: 'TEST_ID_3',
+};
+
+const testProfiles = [testProfile1, testProfile2, testProfile3];
 
 jest.mock('react-i18next', () => ({
   useTranslation: () => ({
@@ -67,7 +107,7 @@ describe('Profile Details', () => {
     mockAxios.reset();
   });
 
-  it('renders the component, sends a get request and displays and shows the profile target', async () => {
+  it('renders the component and sends a get request', async () => {
     render(
       <ProfileDetails
         selectedProfile={{
@@ -123,11 +163,11 @@ describe('Profile Details', () => {
 
   it('renders download links correctly', async () => {
     for (const p of testProfiles) {
-      render(
+      const { getAllByTestId } = render(
         <ProfileDetails
           selectedProfile={{
-            id: 'TEST_ID1',
-            target: 'TEST_TARGET',
+            id: p.id,
+            target: p.target,
           }}
           selectedVersion={testVersion}
         />
@@ -136,7 +176,7 @@ describe('Profile Details', () => {
       mockAxios.onGet().replyOnce(200, p);
 
       await waitFor(() => {
-        const downloadLinks = screen.getAllByTestId('download_link');
+        const downloadLinks = getAllByTestId('download_link');
         let expectedItems = p.images?.map((i) => i.type) || [];
         downloadLinks.forEach((downloadLink) => {
           expectedItems = expectedItems.filter((i) => i !== downloadLink.textContent);
diff --git a/src/containers/home/components/ProfileDetails.tsx b/src/containers/home/components/ProfileDetails.tsx
index 86a49b4..6805bd4 100644
--- a/src/containers/home/components/ProfileDetails.tsx
+++ b/src/containers/home/components/ProfileDetails.tsx
@@ -20,16 +20,13 @@ import { useTranslation } from 'react-i18next';
 import { ProfilesEntity } from '../../../types/overview';
 import { Profile, TitlesEntity } from '../../../types/profile';
 import config from '../../../config';
+import { getTitle } from '../utils/title';
 
 type Props = {
   selectedVersion: string;
   selectedProfile: ProfilesEntity;
 };
 
-const getTitle = (title: TitlesEntity) => {
-  return title.title || `${title.vendor} ${title.model}`;
-};
-
 const profilesData: { [key: string]: Profile } = {};
 
 const ProfileDetails: FunctionComponent<Props> = ({ selectedVersion, selectedProfile }) => {
@@ -75,11 +72,9 @@ const ProfileDetails: FunctionComponent<Props> = ({ selectedVersion, selectedPro
 
   useEffect(() => {
     let mounted = true;
-    if (selectedVersion && selectedProfile) {
-      getProfileData().then((_profileData) => {
-        if (mounted && !isEqual(profile, _profileData)) setProfileData(_profileData);
-      });
-    }
+    getProfileData().then((_profileData) => {
+      if (mounted && !isEqual(profile, _profileData)) setProfileData(_profileData);
+    });
 
     return () => {
       mounted = false;
@@ -143,14 +138,10 @@ const ProfileDetails: FunctionComponent<Props> = ({ selectedVersion, selectedPro
                       </Link>
                     );
                   })
-                  .reduce((acc: ReactNode, curr: ReactNode) => [
+                  .reduce((acc: ReactNode, curr: ReactNode, i: number) => [
                     acc,
                     // eslint-disable-next-line react/no-array-index-key
-                    <Box
-                      display="inline-block"
-                      marginRight={2}
-                      key={(acc?.toString() ?? '') + (curr?.toString() ?? '')}
-                    />,
+                    <Box display="inline-block" marginRight={2} key={i} />,
                     curr,
                   ])}
               </TableCell>
@@ -177,7 +168,7 @@ const ProfileDetails: FunctionComponent<Props> = ({ selectedVersion, selectedPro
                 .replace('{target}', profile.target)
                 .replace('{version}', profile.version_number)}/${i.name}`;
               return (
-                <TableRow key={downloadURL}>
+                <TableRow key={downloadURL + i.type}>
                   <TableCell>
                     <Link href={downloadURL} target="_blank" data-testid="download_link">
                       <Button endIcon={<CloudDownload />} variant="contained" color="primary">
diff --git a/src/containers/home/components/ProfileSearch.test.tsx b/src/containers/home/components/ProfileSearch.test.tsx
new file mode 100644
index 0000000..3b02207
--- /dev/null
+++ b/src/containers/home/components/ProfileSearch.test.tsx
@@ -0,0 +1,118 @@
+/* eslint-disable react/jsx-props-no-spreading */
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+/* eslint-disable no-await-in-loop */
+/* eslint-disable no-restricted-syntax */
+import React from 'react';
+import { fireEvent, render, waitFor, screen } from '@testing-library/react';
+import axios from 'axios';
+import MockAdapter from 'axios-mock-adapter';
+
+import { Overview } from '../../../types/overview';
+import ProfileSearch from './ProfileSearch';
+
+const mockAxios = new MockAdapter(axios);
+
+const testVersion = 'TEST_VERSION';
+
+const testOverview1: Overview = {
+  image_url: 'TEST_IMAGE_URL',
+  release: 'TEST_RELEASE',
+  profiles: [
+    {
+      id: 'TEST_PROFILE_ID',
+      target: 'TEST_TARGET',
+      titles: [
+        {
+          title: 'TEST_TITLE1',
+        },
+        {
+          title: 'TEST_TITLE2',
+        },
+        {
+          vendor: 'TEST_VENDOR',
+
+          model: 'TEST_MODEL',
+        },
+      ],
+    },
+  ],
+};
+
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (k: string) => k,
+    i18n: {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      changeLanguage: (l: string) => {},
+      language: 'en',
+    },
+  }),
+}));
+
+describe('Search Field', () => {
+  const mockOnProfileChange = jest.fn();
+  const props = {
+    selectedVersion: testVersion,
+    onProfileChange: mockOnProfileChange,
+  };
+
+  afterEach(() => {
+    mockAxios.reset();
+  });
+
+  it('renders the component and sends a get request', async () => {
+    render(<ProfileSearch {...props} />);
+
+    mockAxios.onGet().replyOnce(200, testOverview1);
+
+    await waitFor(() => {
+      expect(mockAxios.history.get).toHaveLength(1);
+    });
+  });
+
+  it('renders autocomplete and selects right option', async () => {
+    const { getByTestId } = render(<ProfileSearch {...props} />);
+    mockAxios.onGet().replyOnce(200, testOverview1);
+
+    let autocomplete: HTMLElement | null;
+    await waitFor(() => {
+      autocomplete = getByTestId('search-autocomplete');
+    });
+    const input = autocomplete!.querySelector('input');
+    expect(input).toBeInTheDocument();
+
+    autocomplete!.focus();
+    fireEvent.change(input!, { target: { value: 'TESTVENMODE' } });
+    fireEvent.keyDown(autocomplete!, { key: 'ArrowDown' });
+    fireEvent.keyDown(autocomplete!, { key: 'Enter' });
+
+    await waitFor(() => {
+      expect(input!.value).toEqual('TEST_VENDOR TEST_MODEL');
+    });
+  });
+
+  it('clearing the autocomplete should not hide the last selected profile', async () => {
+    const { getByTestId } = render(<ProfileSearch {...props} />);
+    mockAxios.onGet().replyOnce(200, testOverview1);
+
+    let autocomplete: HTMLElement | null;
+    await waitFor(() => {
+      autocomplete = getByTestId('search-autocomplete');
+    });
+    const input = autocomplete!.querySelector('input');
+    expect(input).toBeInTheDocument();
+
+    autocomplete!.focus();
+    fireEvent.change(input!, { target: { value: 'TESTVENMODE' } });
+    fireEvent.keyPress(input!, { key: 'Enter' });
+
+    expect(mockOnProfileChange).toBeCalled();
+    mockOnProfileChange.mockReset();
+
+    const clearButton = autocomplete!.querySelector('.MuiAutocomplete-clearIndicator');
+    expect(clearButton).toBeInTheDocument();
+    fireEvent.click(clearButton!);
+
+    await waitFor(() => expect(mockOnProfileChange).not.toBeCalled());
+  });
+});
diff --git a/src/containers/home/components/SearchField.tsx b/src/containers/home/components/ProfileSearch.tsx
similarity index 84%
rename from src/containers/home/components/SearchField.tsx
rename to src/containers/home/components/ProfileSearch.tsx
index a297fce..759ab8b 100644
--- a/src/containers/home/components/SearchField.tsx
+++ b/src/containers/home/components/ProfileSearch.tsx
@@ -7,6 +7,7 @@ import { matchSorter } from 'match-sorter';
 import { useTranslation } from 'react-i18next';
 
 import { Overview, ProfilesEntity } from '../../../types/overview';
+import { getTitle } from '../utils/title';
 
 type Props = {
   selectedVersion: string;
@@ -17,7 +18,7 @@ type SearchData = { value: ProfilesEntity; search: string; title: string };
 
 const overviewData: { [key: string]: Overview } = {};
 
-const SearchField: FunctionComponent<Props> = ({ selectedVersion, onProfileChange }) => {
+const ProfileSearch: FunctionComponent<Props> = ({ selectedVersion, onProfileChange }) => {
   const [searchData, setSearchData] = useState<SearchData[]>([]);
   const [working, toggleWorking] = useState<boolean>(true);
   const { t } = useTranslation();
@@ -38,12 +39,13 @@ const SearchField: FunctionComponent<Props> = ({ selectedVersion, onProfileChang
 
     toggleWorking(false);
 
-    overview.profiles?.forEach((profile) => {
-      profile.titles?.forEach((title) => {
+    overview.profiles.forEach((profile) => {
+      profile.titles.forEach((titleEntity) => {
+        const title = getTitle(titleEntity);
         searchDataArray.push({
           value: profile,
-          search: profile.id + title.title,
-          title: title.title || `${title.vendor} ${title.model}`,
+          search: profile.id + title,
+          title,
         });
       });
     });
@@ -58,8 +60,7 @@ const SearchField: FunctionComponent<Props> = ({ selectedVersion, onProfileChang
   }, [getSearchData, searchData, selectedVersion]);
 
   const handleProfileSelect = (_: unknown, searchDataRow: SearchData | null) => {
-    if (!searchDataRow) return;
-    onProfileChange(searchDataRow.value);
+    if (searchDataRow) onProfileChange(searchDataRow.value);
   };
 
   const getOptionLabel = (option: SearchData) => option.title;
@@ -85,6 +86,7 @@ const SearchField: FunctionComponent<Props> = ({ selectedVersion, onProfileChang
 
   return (
     <Autocomplete
+      data-testid="search-autocomplete"
       options={searchData}
       getOptionLabel={getOptionLabel}
       renderInput={renderInput}
@@ -94,4 +96,4 @@ const SearchField: FunctionComponent<Props> = ({ selectedVersion, onProfileChang
   );
 };
 
-export default SearchField;
+export default ProfileSearch;
diff --git a/src/containers/home/components/VersionSelector.test.tsx b/src/containers/home/components/VersionSelector.test.tsx
new file mode 100644
index 0000000..e88068d
--- /dev/null
+++ b/src/containers/home/components/VersionSelector.test.tsx
@@ -0,0 +1,46 @@
+/* eslint-disable react/jsx-props-no-spreading */
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+/* eslint-disable no-await-in-loop */
+/* eslint-disable no-restricted-syntax */
+import React from 'react';
+import { fireEvent, render, waitFor } from '@testing-library/react';
+
+import VersionSelector from './VersionSelector';
+
+jest.mock('../../../config', () => ({
+  versions: { TEST_1: 'data/TEST_1', TEST_2: 'data/TEST_2' },
+}));
+
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (k: string) => k,
+    i18n: {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      changeLanguage: (l: string) => {},
+      language: 'en',
+    },
+  }),
+}));
+
+describe('Search Field', () => {
+  const mockOnVersionChange = jest.fn();
+  const props = {
+    selectedVersion: 'TEST_1',
+    onVersionChange: mockOnVersionChange,
+  };
+
+  it('renders the component and sends a get request', async () => {
+    const { getByText, getByRole } = render(<VersionSelector {...props} />);
+
+    const select = await waitFor(() => getByRole('button'));
+    expect(select).toBeInTheDocument();
+    fireEvent.mouseDown(select);
+
+    const optionTest2 = await waitFor(() => getByText('TEST_2'));
+    expect(optionTest2).toBeInTheDocument();
+
+    fireEvent.click(optionTest2);
+
+    expect(mockOnVersionChange.mock.calls).toHaveLength(1);
+  });
+});
diff --git a/src/containers/home/components/VersionSelector.tsx b/src/containers/home/components/VersionSelector.tsx
index 152b150..015e8c1 100644
--- a/src/containers/home/components/VersionSelector.tsx
+++ b/src/containers/home/components/VersionSelector.tsx
@@ -26,6 +26,7 @@ const VersionSelector: FunctionComponent<Props> = ({ selectedVersion, onVersionC
         labelId="version-select-label"
         value={selectedVersion}
         onChange={handleVersionChange}
+        data-testid="version-select"
       >
         {Object.keys(versions).map((version) => (
           <MenuItem value={version} key={version}>
diff --git a/src/containers/home/home.test.tsx b/src/containers/home/home.test.tsx
new file mode 100644
index 0000000..9d526fe
--- /dev/null
+++ b/src/containers/home/home.test.tsx
@@ -0,0 +1,31 @@
+/* eslint-disable react/jsx-props-no-spreading */
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+/* eslint-disable no-await-in-loop */
+/* eslint-disable no-restricted-syntax */
+import React from 'react';
+import { fireEvent, render, waitFor } from '@testing-library/react';
+
+import Home from './home';
+import VersionSelector from './components/VersionSelector';
+
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (k: string) => k,
+    i18n: {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      changeLanguage: (l: string) => {},
+      language: 'en',
+    },
+  }),
+}));
+
+describe('Home', () => {
+  it('renders the component and sends a get request', async () => {
+    const { getByTestId, findByRole } = render(<Home />);
+
+    const versionSelect = getByTestId('version-select');
+    fireEvent.change(versionSelect, { value: '1234' });
+
+    expect(versionSelect).toBeInTheDocument();
+  });
+});
diff --git a/src/containers/home/home.tsx b/src/containers/home/home.tsx
index b84681c..4cfdf3a 100644
--- a/src/containers/home/home.tsx
+++ b/src/containers/home/home.tsx
@@ -1,7 +1,7 @@
 import React, { FunctionComponent, useState } from 'react';
 import { Container, Paper, Box, Typography, Grid } from '@material-ui/core';
 import { useTranslation } from 'react-i18next';
-import SearchField from './components/SearchField';
+import ProfileSearch from './components/ProfileSearch';
 import VersionSelector from './components/VersionSelector';
 import ProfileDetails from './components/ProfileDetails';
 import config from '../../config';
@@ -12,14 +12,6 @@ const Home: FunctionComponent = () => {
   const [selectedProfile, setSelectedProfile] = useState<ProfilesEntity | null>();
   const { t } = useTranslation();
 
-  const onVersionChange = (version: string) => {
-    setSelectedVersion(version);
-  };
-
-  const onProfileChange = (profile: ProfilesEntity) => {
-    setSelectedProfile(profile);
-  };
-
   return (
     <Container>
       <Box paddingY={4}>
@@ -37,12 +29,17 @@ const Home: FunctionComponent = () => {
             </Box>
             <Grid container spacing={2}>
               <Grid item xs>
-                <SearchField selectedVersion={selectedVersion} onProfileChange={onProfileChange} />
+                <ProfileSearch
+                  selectedVersion={selectedVersion}
+                  onProfileChange={setSelectedProfile}
+                  data-testid="profile-search"
+                />
               </Grid>
               <Grid item xs={3}>
                 <VersionSelector
+                  data-testid="version-selector"
                   selectedVersion={selectedVersion}
-                  onVersionChange={onVersionChange}
+                  onVersionChange={setSelectedVersion}
                 />
               </Grid>
             </Grid>
diff --git a/src/containers/home/utils/title.test.ts b/src/containers/home/utils/title.test.ts
new file mode 100644
index 0000000..82d1d7d
--- /dev/null
+++ b/src/containers/home/utils/title.test.ts
@@ -0,0 +1,29 @@
+import { TitlesEntity } from '../../../types/overview';
+import { getTitle } from './title';
+
+describe('getTitle', () => {
+  it('returns the correct title', () => {
+    const data: {
+      title: TitlesEntity;
+      expected: string;
+    }[] = [
+      {
+        title: {
+          title: 'TEST',
+        },
+        expected: 'TEST',
+      },
+      {
+        title: {
+          vendor: 'TEST',
+          model: 'MODEL',
+        },
+        expected: 'TEST MODEL',
+      },
+    ];
+
+    data.forEach((element) => {
+      expect(getTitle(element.title)).toStrictEqual(element.expected);
+    });
+  });
+});
diff --git a/src/containers/home/utils/title.ts b/src/containers/home/utils/title.ts
new file mode 100644
index 0000000..21d1e81
--- /dev/null
+++ b/src/containers/home/utils/title.ts
@@ -0,0 +1,6 @@
+import { TitlesEntity } from '../../../types/overview';
+
+export const getTitle = (title: TitlesEntity): string =>
+  title.title || `${title.vendor} ${title.model}`;
+
+export default { getTitle };
diff --git a/src/types/overview.ts b/src/types/overview.ts
index 64a643a..c8cab28 100644
--- a/src/types/overview.ts
+++ b/src/types/overview.ts
@@ -1,12 +1,12 @@
 export interface Overview {
   image_url: string;
-  profiles?: ProfilesEntity[] | null;
+  profiles: ProfilesEntity[];
   release: string;
 }
 export interface ProfilesEntity {
   id: string;
   target: string;
-  titles?: TitlesEntity[] | null;
+  titles: TitlesEntity[];
 }
 export interface TitlesEntity {
   title?: string;
diff --git a/src/types/profile.ts b/src/types/profile.ts
index 10dedc7..72933a1 100644
--- a/src/types/profile.ts
+++ b/src/types/profile.ts
@@ -5,10 +5,10 @@ export interface Profile {
   device_packages?: string[] | null;
   id: string;
   image_prefix?: string;
-  images?: ImagesEntity[] | null;
+  images: ImagesEntity[];
   metadata_version?: number;
   target: string;
-  titles?: TitlesEntity[] | null;
+  titles: TitlesEntity[];
   version_code: string;
   version_number: string;
 }