diff --git a/src/components/Search.jsx b/src/components/Search.jsx
index 1911d762..8f415960 100644
--- a/src/components/Search.jsx
+++ b/src/components/Search.jsx
@@ -72,6 +72,7 @@ function Search({ intl }) {
           <Icon
             src={SearchIcon}
             onClick={() => onSubmit(searchValue)}
+            data-testid="search-icon"
           />
         </span>
       </SearchField.Advanced>
diff --git a/src/discussions/data/api.js b/src/discussions/data/api.js
index 045ac180..3f197194 100644
--- a/src/discussions/data/api.js
+++ b/src/discussions/data/api.js
@@ -8,14 +8,13 @@ ensureConfig([
 ], 'Posts API service');
 
 export const getCourseConfigApiUrl = () => `${getConfig().LMS_BASE_URL}/api/discussion/v1/courses/`;
-
+export const getDiscussionsConfigUrl = (courseId) => `${getCourseConfigApiUrl()}${courseId}/`;
 /**
  * Get discussions course config
  * @param {string} courseId
  */
 export async function getDiscussionsConfig(courseId) {
-  const url = `${getCourseConfigApiUrl()}${courseId}/`;
-  const { data } = await getAuthenticatedHttpClient().get(url);
+  const { data } = await getAuthenticatedHttpClient().get(getDiscussionsConfigUrl(courseId));
   return data;
 }
 
@@ -24,7 +23,7 @@ export async function getDiscussionsConfig(courseId) {
  * @param {string} courseId
  */
 export async function getDiscussionsSettings(courseId) {
-  const url = `${getCourseConfigApiUrl()}${courseId}/settings`;
+  const url = `${getDiscussionsConfigUrl(courseId)}settings`;
   const { data } = await getAuthenticatedHttpClient().get(url);
   return data;
 }
diff --git a/src/discussions/learners/LearnersView.test.jsx b/src/discussions/learners/LearnersView.test.jsx
index e364b8ec..9e05e7b5 100644
--- a/src/discussions/learners/LearnersView.test.jsx
+++ b/src/discussions/learners/LearnersView.test.jsx
@@ -1,6 +1,8 @@
 import React from 'react';
 
-import { render, screen } from '@testing-library/react';
+import {
+  fireEvent, render, screen, waitFor, within,
+} from '@testing-library/react';
 import MockAdapter from 'axios-mock-adapter';
 import { act } from 'react-dom/test-utils';
 import { IntlProvider } from 'react-intl';
@@ -11,11 +13,13 @@ import { initializeMockApp } from '@edx/frontend-platform';
 import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
 import { AppProvider } from '@edx/frontend-platform/react';
 
+import { PostActionsBar } from '../../components';
 import { initializeStore } from '../../store';
 import { executeThunk } from '../../test-utils';
-import { getCourseConfigApiUrl } from '../data/api';
+import { DiscussionContext } from '../common/context';
+import { getDiscussionsConfigUrl } from '../data/api';
 import { fetchCourseConfig } from '../data/thunks';
-import { getCoursesApiUrl, getUserProfileApiUrl } from './data/api';
+import { getUserProfileApiUrl, learnersApiUrl } from './data/api';
 import { fetchLearners } from './data/thunks';
 import LearnersView from './LearnersView';
 
@@ -23,27 +27,31 @@ import './data/__factories__';
 
 let store;
 let axiosMock;
-const coursesApiUrl = getCoursesApiUrl();
-const courseConfigApiUrl = getCourseConfigApiUrl();
-const userProfileApiUrl = getUserProfileApiUrl();
 const courseId = 'course-v1:edX+TestX+Test_Course';
+let container;
 
 function renderComponent() {
-  return render(
+  const wrapper = render(
     <IntlProvider locale="en">
       <AppProvider store={store}>
-        <MemoryRouter initialEntries={[`/${courseId}/`]}>
-          <Route path="/:courseId/">
-            <LearnersView />
-          </Route>
-        </MemoryRouter>
+        <DiscussionContext.Provider value={{
+          page: 'learners',
+        }}
+        >
+          <MemoryRouter initialEntries={[`/${courseId}/`]}>
+            <Route path="/:courseId/">
+              <PostActionsBar />
+              <LearnersView />
+            </Route>
+          </MemoryRouter>
+        </DiscussionContext.Provider>
       </AppProvider>
     </IntlProvider>,
   );
+  container = wrapper.container;
 }
 
 describe('LearnersView', () => {
-  const learnerCount = 3;
   beforeEach(async () => {
     initializeMockApp({
       authenticatedUser: {
@@ -53,41 +61,190 @@ describe('LearnersView', () => {
         roles: [],
       },
     });
-
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
     store = initializeStore();
     Factory.resetAll();
-    const learnersData = Factory.build('learnersResult', {}, {
-      count: learnerCount,
-      pageSize: 6,
-    });
-    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
-    axiosMock.onGet(`${coursesApiUrl}${courseId}/activity_stats/`)
-      .reply(() => [200, learnersData]);
-    const learnersProfile = Factory.build('learnersProfile', {}, {
-      username: ['learner-1', 'learner-2', 'learner-3'],
-    });
-    axiosMock.onGet(`${userProfileApiUrl}?username=learner-1,learner-2,learner-3`)
-      .reply(() => [200, learnersProfile.profiles]);
-    await executeThunk(fetchLearners(courseId), store.dispatch, store.getState);
   });
 
-  describe('Basic', () => {
-    test('Learners tab is disabled by default', async () => {
-      await act(async () => {
-        await renderComponent();
-      });
-      expect(screen.queryByText(/Last active/i)).toBeFalsy();
+  async function setUpLearnerMockResponse(
+    count = 3,
+    pageSize = 6,
+    page = 1,
+    username = ['learner-1', 'learner-2', 'learner-3'],
+    searchText,
+  ) {
+    Factory.resetAll();
+    const learnersData = Factory.build('learnersResult', {}, {
+      count,
+      pageSize,
+      page,
     });
-    test('Learners tab is enabled', async () => {
-      axiosMock.onGet(`${courseConfigApiUrl}${courseId}/`).reply(200, {
-        learners_tab_enabled: true,
-        user_is_privileged: true,
-      });
-      axiosMock.onGet(`${courseConfigApiUrl}${courseId}/settings`).reply(200, {});
-      await executeThunk(fetchCourseConfig(courseId), store.dispatch, store.getState);
+    axiosMock.onGet(learnersApiUrl(courseId))
+      .reply(() => [200, learnersData]);
+
+    axiosMock.onGet(`${getUserProfileApiUrl()}?username=${username.join()}`)
+      .reply(() => [200, Factory.build('learnersProfile', {}, {
+        username,
+      }).profiles]);
+    await executeThunk(fetchLearners(courseId, { usernameSearch: searchText }), store.dispatch, store.getState);
+  }
+
+  async function assignPrivilages() {
+    axiosMock.onGet(getDiscussionsConfigUrl(courseId)).reply(200, {
+      learners_tab_enabled: true,
+      user_is_privileged: true,
+    });
+
+    await executeThunk(fetchCourseConfig(courseId), store.dispatch, store.getState);
+  }
+
+  test('Learners tab is disabled by default', async () => {
+    await setUpLearnerMockResponse();
+    await renderComponent();
+
+    expect(screen.queryByText('learner-1')).not.toBeInTheDocument();
+  });
+
+  test('Learners tab is enabled', async () => {
+    await setUpLearnerMockResponse();
+    await assignPrivilages();
+    await waitFor(() => {
+      renderComponent();
+    });
+
+    expect(screen.queryByText('learner-1')).toBeInTheDocument();
+  });
+
+  test('Most activity should be selected by default for the non-moderator role.', async () => {
+    await setUpLearnerMockResponse();
+    await renderComponent();
+
+    const filterBar = container.querySelector('.collapsible-trigger');
+
+    await act(async () => {
+      fireEvent.click(filterBar);
+    });
+
+    await waitFor(() => {
+      const mostActivity = screen.getByTestId('activity selected');
+
+      expect(mostActivity).toBeInTheDocument();
+    });
+  });
+
+  it.each([
+    { searchBy: 'sort-recency', result: 0 },
+    { searchBy: 'sort-activity', result: 3 },
+  ])('successfully display learners by %s.', async ({ searchBy, result }) => {
+    await setUpLearnerMockResponse();
+    await assignPrivilages();
+    await renderComponent();
+
+    const filterBar = container.querySelector('.collapsible-trigger');
+    await act(async () => {
+      fireEvent.click(filterBar);
+    });
+
+    await waitFor(async () => {
+      const activity = container.querySelector(`#${searchBy}`);
+
       await act(async () => {
-        await renderComponent();
+        fireEvent.click(activity);
+      });
+      await waitFor(() => {
+        const learners = container.querySelectorAll('.discussion-post');
+
+        expect(learners).toHaveLength(result);
       });
     });
   });
+
+  it('should display a learner\'s list.', async () => {
+    await setUpLearnerMockResponse();
+    await assignPrivilages();
+    await waitFor(() => {
+      renderComponent();
+    });
+
+    const learners = await container.querySelectorAll('.discussion-post');
+    const firstLearner = learners.item(0);
+    const learnerAvatar = firstLearner.querySelector('[alt=learner-1]');
+    const learnerTitle = within(firstLearner).queryByText('learner-1');
+    const stats = firstLearner.querySelectorAll('.icon-size');
+
+    expect(learners).toHaveLength(3);
+    expect(learnerAvatar).toBeInTheDocument();
+    expect(learnerTitle).toBeInTheDocument();
+    expect(stats).toHaveLength(2);
+  });
+
+  it.each([
+    {
+      searchText: 'hello world',
+      output: 'Showing 0 results for',
+      learnersCount: 0,
+      username: [],
+    },
+    {
+      searchText: 'learner',
+      output: 'Showing 2 results for',
+      learnersCount: 2,
+      username:
+        ['learner-1', 'learner-2'],
+    },
+  ])('should have a search bar with a clear button and \'$output\' results found text.',
+    async ({
+      searchText, output, learnersCount, username,
+    }) => {
+      await setUpLearnerMockResponse();
+      await assignPrivilages();
+      await renderComponent();
+
+      const searchField = within(container).getByPlaceholderText('Search learners');
+      const searchButton = within(container).getByTestId('search-icon');
+
+      await fireEvent.change(searchField, { target: { value: searchText } });
+      await act(async () => {
+        fireEvent.click(searchButton);
+        setUpLearnerMockResponse(learnersCount, learnersCount, 1, username, searchText);
+      });
+
+      await waitFor(() => {
+        const clearButton = within(container).queryByText('Clear results');
+        const searchMessage = within(container).queryByText(`${output} "${searchText}"`);
+        const leaners = container.querySelectorAll('.discussion-post') ?? [];
+
+        expect(searchMessage).toBeInTheDocument();
+        expect(clearButton).toBeInTheDocument();
+        expect(leaners).toHaveLength(learnersCount);
+      });
+    });
+
+  test('When click on the clear button it should move to a list of all learners.', async () => {
+    await setUpLearnerMockResponse();
+    await assignPrivilages();
+    await renderComponent();
+
+    const searchField = within(container).getByPlaceholderText('Search learners');
+    const searchButton = within(container).getByTestId('search-icon');
+    let clearButton;
+
+    await fireEvent.change(searchField, { target: { value: 'learner' } });
+    await act(async () => {
+      fireEvent.click(searchButton);
+      setUpLearnerMockResponse(2, 2, 1, ['learner-1', 'learner-2'], 'learner');
+    });
+
+    await waitFor(() => {
+      clearButton = within(container).queryByText('Clear results');
+    });
+    await act(async () => fireEvent.click(clearButton));
+    await waitFor(() => {
+      setUpLearnerMockResponse();
+    });
+
+    const learners = container.querySelectorAll('.discussion-post');
+
+    expect(learners).toHaveLength(3);
+  });
 });
diff --git a/src/discussions/learners/data/__factories__/learners.factory.js b/src/discussions/learners/data/__factories__/learners.factory.js
index 88a9920f..283aa371 100644
--- a/src/discussions/learners/data/__factories__/learners.factory.js
+++ b/src/discussions/learners/data/__factories__/learners.factory.js
@@ -13,9 +13,9 @@ Factory.define('learner')
   });
 
 Factory.define('learnersResult')
-  .option('count', null, 3)
-  .option('page', null, 1)
-  .option('pageSize', null, 5)
+  .option('count', null)
+  .option('page', null)
+  .option('pageSize', null)
   .option('courseId', null, 'course-v1:Test+TestX+Test_Course')
   .option('activeFlags', null, 0)
   .attr(
diff --git a/src/discussions/learners/learner/LearnerFilterBar.jsx b/src/discussions/learners/learner/LearnerFilterBar.jsx
index 610c1504..d9b10c26 100644
--- a/src/discussions/learners/learner/LearnerFilterBar.jsx
+++ b/src/discussions/learners/learner/LearnerFilterBar.jsx
@@ -24,7 +24,7 @@ const ActionItem = ({
   <label
     htmlFor={id}
     className="focus border-bottom-0 d-flex align-items-center w-100 py-2 m-0 font-weight-500 filter-menu"
-    data-testid={value === selected ? 'selected' : null}
+    data-testid={value === selected ? `${value} selected` : null}
     style={{ cursor: 'pointer' }}
     aria-checked={value === selected}
   >