diff --git a/README.md b/README.md
index 48a2ff21c..a1a3ff8ba 100644
--- a/README.md
+++ b/README.md
@@ -256,7 +256,7 @@ directory.
   The routes then can be called from the plugin React components defined in the `plugin.js`. For convenience the plugin name is always passed with options when function- or array-returning form is used to export plugin as the function options property `pluginName`:
 
   ```js
-  export default ['react', 'axios', function(React, axios, {pluginName, pluginConfig, actions, selectors}) {
+  export default ['react', 'axios', function(React, axios, {pluginName, pluginConfig, actions, actionNames, selectors}) {
       class PluginComponent extends React.Component {
           // ... somewhere inside the component ...
           const result = await axios.get(`/plugin-routes/${pluginName}/plugin-route`);
@@ -271,9 +271,11 @@ directory.
 
   In the example you can also see another convenient properties:
   - `pluginName` - plugin name;
+  - `pluginConfig` - plugin configuration;
   - `actions` - the html-reporter **Redux** actions;
-  - `selectors` - the memoized html-reporter selectors which created using **reselect** library
-  - `pluginConfig` - plugin configuration.
+  - `actionNames` - the html-reporter action names, that used in **Redux** actions. To be able to subscribe on html-reporter events;
+  - `selectors` - the memoized html-reporter selectors which created using **reselect** library.
+
 
   Available dependencies:
   - `react`
diff --git a/lib/static/components/details.js b/lib/static/components/details.js
index fc0d8dd4e..4f1e8ffb7 100644
--- a/lib/static/components/details.js
+++ b/lib/static/components/details.js
@@ -16,11 +16,15 @@ export default class Details extends Component {
     state = {isOpened: false};
 
     handleClick = () => {
-        this.setState({isOpened: !this.state.isOpened});
+        this.setState((state, props) => {
+            const newState = {isOpened: !state.isOpened};
 
-        if (this.props.onClick) {
-            this.props.onClick();
-        }
+            if (props.onClick) {
+                props.onClick(newState);
+            }
+
+            return newState;
+        });
     }
 
     render() {
diff --git a/lib/static/modules/action-names.js b/lib/static/modules/action-names.js
index 753b71ed8..78f4b6b16 100644
--- a/lib/static/modules/action-names.js
+++ b/lib/static/modules/action-names.js
@@ -13,7 +13,7 @@ export default {
     SUITE_BEGIN: 'SUITE_BEGIN',
     TEST_BEGIN: 'TEST_BEGIN',
     TEST_RESULT: 'TEST_RESULT',
-    TESTS_END: 'TEST_END',
+    TESTS_END: 'TESTS_END',
     ACCEPT_SCREENSHOT: 'ACCEPT_SCREENSHOT',
     ACCEPT_OPENED_SCREENSHOTS: 'ACCEPT_OPENED_SCREENSHOTS',
     CLOSE_SECTIONS: 'CLOSE_SECTIONS',
diff --git a/lib/static/modules/actions.js b/lib/static/modules/actions.js
index 01f64e857..c1df58c1c 100644
--- a/lib/static/modules/actions.js
+++ b/lib/static/modules/actions.js
@@ -5,9 +5,8 @@ import StaticTestsTreeBuilder from '../../tests-tree-builder/static';
 import actionNames from './action-names';
 import {types as modalTypes} from '../components/modals';
 import {QUEUED} from '../../constants/test-statuses';
-import {LOCAL_DATABASE_NAME} from '../../constants/file-names';
 import {getHttpErrorMessage} from './utils';
-import {fetchDatabases, mergeDatabases, connectToDatabase} from './sqlite';
+import {fetchDatabases, mergeDatabases, connectToDatabase, getMainDatabaseUrl} from './sqlite';
 import {getSuitesTableRows} from './database-utils';
 import {setFilteredBrowsers} from './query-params';
 import plugins from './plugins';
@@ -23,7 +22,7 @@ export const initGuiReport = () => {
         try {
             const appState = await axios.get('/init');
 
-            const mainDatabaseUrl = new URL(LOCAL_DATABASE_NAME, window.location.href);
+            const mainDatabaseUrl = getMainDatabaseUrl();
             const db = await connectToDatabase(mainDatabaseUrl.href);
 
             await plugins.loadAll(appState.data.config);
@@ -148,6 +147,20 @@ export const stopTests = () => async dispatch => {
     }
 };
 
+export const testsEnd = () => async dispatch => {
+    try {
+        const mainDatabaseUrl = getMainDatabaseUrl();
+        const db = await connectToDatabase(mainDatabaseUrl.href);
+
+        dispatch({
+            type: actionNames.TESTS_END,
+            payload: {db}
+        });
+    } catch (e) {
+        dispatch(createNotificationError('testsEnd', e));
+    }
+};
+
 export const suiteBegin = (suite) => ({type: actionNames.SUITE_BEGIN, payload: suite});
 export const testBegin = (test) => ({type: actionNames.TEST_BEGIN, payload: test});
 export const testResult = (result) => ({type: actionNames.TEST_RESULT, payload: result});
@@ -157,7 +170,6 @@ export const toggleLoading = (payload) => ({type: actionNames.TOGGLE_LOADING, pa
 export const closeSections = (payload) => ({type: actionNames.CLOSE_SECTIONS, payload});
 export const openModal = (payload) => ({type: actionNames.OPEN_MODAL, payload});
 export const closeModal = (payload) => ({type: actionNames.CLOSE_MODAL, payload});
-export const testsEnd = () => ({type: actionNames.TESTS_END});
 export const runFailed = () => ({type: actionNames.RUN_FAILED_TESTS});
 export const expandAll = () => ({type: actionNames.VIEW_EXPAND_ALL});
 export const expandErrors = () => ({type: actionNames.VIEW_EXPAND_ERRORS});
diff --git a/lib/static/modules/load-plugin.js b/lib/static/modules/load-plugin.js
index 26a211add..d7500cabd 100644
--- a/lib/static/modules/load-plugin.js
+++ b/lib/static/modules/load-plugin.js
@@ -11,6 +11,7 @@ import immer from 'immer';
 import * as reselect from 'reselect';
 import axios from 'axios';
 import * as selectors from './selectors';
+import actionNames from './action-names';
 import Details from '../components/details';
 
 const whitelistedDeps = {
@@ -85,7 +86,7 @@ async function initPlugin(plugin, pluginName, pluginConfig) {
             const depArgs = deps.map(dep => whitelistedDeps[dep]);
             // cyclic dep, resolve it dynamically
             const actions = await import('./actions');
-            return plugin(...depArgs, {pluginName, pluginConfig, actions, selectors});
+            return plugin(...depArgs, {pluginName, pluginConfig, actions, actionNames, selectors});
         }
 
         return plugin;
diff --git a/lib/static/modules/reducers/db.js b/lib/static/modules/reducers/db.js
index 9abd42129..10fa41411 100644
--- a/lib/static/modules/reducers/db.js
+++ b/lib/static/modules/reducers/db.js
@@ -6,6 +6,14 @@ export default (state, action) => {
         case actionNames.INIT_STATIC_REPORT:
         case actionNames.INIT_GUI_REPORT: {
             const {db} = action.payload;
+
+            return {...state, db};
+        }
+
+        case actionNames.TESTS_END: {
+            closeDatabase(state.db); // close previous connection in order to free memory
+            const {db} = action.payload;
+
             return {...state, db};
         }
 
diff --git a/lib/static/modules/sqlite.js b/lib/static/modules/sqlite.js
index da94c6fd0..1d503969b 100644
--- a/lib/static/modules/sqlite.js
+++ b/lib/static/modules/sqlite.js
@@ -3,6 +3,7 @@
 import axios from 'axios';
 import {flattenDeep} from 'lodash';
 import {mergeTables} from '../../common-utils';
+import {LOCAL_DATABASE_NAME} from '../../constants/file-names';
 
 function isRelativeUrl(url) {
     try {
@@ -139,8 +140,13 @@ async function connectToDatabase(dbUrl) {
     return new SQL.Database(new Uint8Array(data));
 }
 
+function getMainDatabaseUrl() {
+    return new URL(LOCAL_DATABASE_NAME, window.location.href);
+}
+
 module.exports = {
     fetchDatabases,
     mergeDatabases,
-    connectToDatabase
+    connectToDatabase,
+    getMainDatabaseUrl
 };
diff --git a/test/unit/lib/static/components/details.js b/test/unit/lib/static/components/details.js
index 2d7280b2f..017b16f9f 100644
--- a/test/unit/lib/static/components/details.js
+++ b/test/unit/lib/static/components/details.js
@@ -30,16 +30,34 @@ describe('<Details />', () => {
         assert.equal(text, 'some-title');
     });
 
-    it('should call "onClick" handler on click in title', () => {
-        const props = {
-            title: 'some-title',
-            content: 'foo bar',
-            onClick: sinon.stub()
-        };
+    describe('"onClick" handler', () => {
+        let props;
 
-        const component = mount(<Details {...props} />);
-        component.find('.details__summary').simulate('click');
+        beforeEach(() => {
+            props = {
+                title: 'some-title',
+                content: 'foo bar',
+                onClick: sinon.stub()
+            };
+        });
+
+        it('should call on click in title', () => {
+            const component = mount(<Details {...props} />);
+
+            component.find('.details__summary').simulate('click');
+
+            assert.calledOnce(props.onClick);
+        });
+
+        it('should call with changed state on each call', () => {
+            const component = mount(<Details {...props} />);
+
+            component.find('.details__summary')
+                .simulate('click')
+                .simulate('click');
 
-        assert.calledOnceWith(props.onClick);
+            assert.calledWith(props.onClick.firstCall, {isOpened: true});
+            assert.calledWith(props.onClick.secondCall, {isOpened: false});
+        });
     });
 });
diff --git a/test/unit/lib/static/modules/actions.js b/test/unit/lib/static/modules/actions.js
index 4e06542cc..33f6f119a 100644
--- a/test/unit/lib/static/modules/actions.js
+++ b/test/unit/lib/static/modules/actions.js
@@ -7,13 +7,14 @@ import {LOCAL_DATABASE_NAME} from 'lib/constants/file-names';
 
 describe('lib/static/modules/actions', () => {
     const sandbox = sinon.sandbox.create();
-    let dispatch, actions, addNotification, getSuitesTableRows, connectToDatabaseStub, pluginsStub;
+    let dispatch, actions, addNotification, getSuitesTableRows, getMainDatabaseUrl, connectToDatabaseStub, pluginsStub;
 
     beforeEach(() => {
         dispatch = sandbox.stub();
         sandbox.stub(axios, 'post').resolves({data: {}});
         addNotification = sandbox.stub();
         getSuitesTableRows = sandbox.stub();
+        getMainDatabaseUrl = sandbox.stub().returns({href: 'http://localhost/default/sqlite.db'});
         connectToDatabaseStub = sandbox.stub().resolves({});
         pluginsStub = {loadAll: sandbox.stub()};
 
@@ -23,7 +24,7 @@ describe('lib/static/modules/actions', () => {
         actions = proxyquire('lib/static/modules/actions', {
             'reapop': {addNotification},
             './database-utils': {getSuitesTableRows},
-            './sqlite': {connectToDatabase: connectToDatabaseStub},
+            './sqlite': {getMainDatabaseUrl, connectToDatabase: connectToDatabaseStub},
             './plugins': pluginsStub
         });
     });
@@ -33,16 +34,6 @@ describe('lib/static/modules/actions', () => {
     describe('initGuiReport', () => {
         beforeEach(() => {
             sandbox.stub(axios, 'get').resolves({data: {}});
-
-            global.window = {
-                location: {
-                    href: 'http://localhost/random/path.html'
-                }
-            };
-        });
-
-        afterEach(() => {
-            global.window = undefined;
         });
 
         it('should run init action on server', async () => {
@@ -52,7 +43,8 @@ describe('lib/static/modules/actions', () => {
         });
 
         it('should fetch database from default html page', async () => {
-            global.window.location.href = 'http://127.0.0.1:8080/';
+            const href = 'http://127.0.0.1:8080/sqlite.db';
+            getMainDatabaseUrl.returns({href});
 
             await actions.initGuiReport()(dispatch);
 
@@ -330,4 +322,43 @@ describe('lib/static/modules/actions', () => {
             assert.deepEqual(actions.closeModal(modal), {type: actionNames.CLOSE_MODAL, payload: modal});
         });
     });
+
+    describe('testsEnd', () => {
+        it('should connect to database', async () => {
+            const href = 'http://127.0.0.1:8080/sqlite.db';
+            getMainDatabaseUrl.returns({href});
+
+            await actions.testsEnd()(dispatch);
+
+            assert.calledOnceWith(connectToDatabaseStub, href);
+        });
+
+        it('should dispatch "TESTS_END" action with db connection', async () => {
+            const db = {};
+            connectToDatabaseStub.resolves(db);
+
+            await actions.testsEnd()(dispatch);
+
+            assert.calledOnceWith(dispatch, {
+                type: actionNames.TESTS_END,
+                payload: {db}
+            });
+        });
+
+        it('should show notification if error appears', async () => {
+            connectToDatabaseStub.rejects(new Error('failed to connect to database'));
+
+            await actions.testsEnd()(dispatch);
+
+            assert.calledOnceWith(
+                addNotification,
+                {
+                    dismissAfter: 0,
+                    id: 'testsEnd',
+                    message: 'failed to connect to database',
+                    status: 'error'
+                }
+            );
+        });
+    });
 });
diff --git a/test/unit/lib/static/modules/load-plugin.js b/test/unit/lib/static/modules/load-plugin.js
index bd4261286..8b97191fa 100644
--- a/test/unit/lib/static/modules/load-plugin.js
+++ b/test/unit/lib/static/modules/load-plugin.js
@@ -2,6 +2,7 @@
 
 import axios from 'axios';
 import loadPlugin from 'lib/static/modules/load-plugin';
+import actionNames from 'lib/static/modules/action-names';
 import * as actions from 'lib/static/modules/actions';
 import * as selectors from 'lib/static/modules/selectors';
 
@@ -32,7 +33,7 @@ describe('static/modules/load-plugin', () => {
             await loadPlugin('plugin-a');
 
             assert.deepStrictEqual(plugin.args, [
-                [{actions, selectors, pluginName: 'plugin-a', pluginConfig: undefined}]
+                [{actions, actionNames, selectors, pluginName: 'plugin-a', pluginConfig: undefined}]
             ]);
         });
 
@@ -41,7 +42,7 @@ describe('static/modules/load-plugin', () => {
             await loadPlugin('plugin-b', config);
 
             assert.deepStrictEqual(plugin.args, [
-                [{actions, selectors, pluginName: 'plugin-b', pluginConfig: config}]
+                [{actions, actionNames, selectors, pluginName: 'plugin-b', pluginConfig: config}]
             ]);
         });
 
@@ -50,7 +51,7 @@ describe('static/modules/load-plugin', () => {
             await loadPlugin('plugin-c');
 
             assert.deepStrictEqual(plugin.args, [
-                [axios, {actions, selectors, pluginName: 'plugin-c', pluginConfig: undefined}]
+                [axios, {actions, actionNames, selectors, pluginName: 'plugin-c', pluginConfig: undefined}]
             ]);
         });
 
@@ -59,7 +60,7 @@ describe('static/modules/load-plugin', () => {
             await loadPlugin('plugin-d');
 
             assert.deepStrictEqual(plugin.args, [
-                [undefined, {actions, selectors, pluginName: 'plugin-d', pluginConfig: undefined}]
+                [undefined, {actions, actionNames, selectors, pluginName: 'plugin-d', pluginConfig: undefined}]
             ]);
         });
     });
diff --git a/test/unit/lib/static/modules/sqlite.js b/test/unit/lib/static/modules/sqlite.js
index cba539025..97800c392 100644
--- a/test/unit/lib/static/modules/sqlite.js
+++ b/test/unit/lib/static/modules/sqlite.js
@@ -6,8 +6,10 @@ import proxyquire from 'proxyquire';
 import {
     fetchDatabases,
     mergeDatabases,
-    connectToDatabase
+    connectToDatabase,
+    getMainDatabaseUrl
 } from 'lib/static/modules/sqlite';
+import {LOCAL_DATABASE_NAME} from 'lib/constants/file-names';
 
 describe('lib/static/modules/sqlite', () => {
     const sandbox = sinon.sandbox.create();
@@ -16,7 +18,10 @@ describe('lib/static/modules/sqlite', () => {
         sandbox.stub(axios, 'get').resolves();
     });
 
-    afterEach(() => sandbox.restore());
+    afterEach(() => {
+        sandbox.restore();
+        global.window = undefined;
+    });
 
     describe('fetchDatabases', () => {
         it('should return empty arrays if dbUrls.json not contain useful data', async () => {
@@ -190,10 +195,6 @@ describe('lib/static/modules/sqlite', () => {
             };
         });
 
-        afterEach(() => {
-            global.window = undefined;
-        });
-
         it('should return null if dataForDbs is empty', async () => {
             const mergedDbConnection = await mergeDatabases([]);
 
@@ -267,10 +268,6 @@ describe('lib/static/modules/sqlite', () => {
             };
         });
 
-        afterEach(() => {
-            global.window = undefined;
-        });
-
         it('should return connection to database', async () => {
             axios.get
                 .withArgs('http://127.0.0.1:8080/sqlite.db', {responseType: 'arraybuffer'})
@@ -281,4 +278,22 @@ describe('lib/static/modules/sqlite', () => {
             assert.instanceOf(db, Database);
         });
     });
+
+    describe('getMainDatabaseUrl', () => {
+        beforeEach(() => {
+            global.window = {
+                location: {
+                    href: 'http://localhost/default/path.html'
+                }
+            };
+        });
+
+        it('should return url to main database', () => {
+            global.window.location.href = 'http://127.0.0.1:8080/';
+
+            const url = getMainDatabaseUrl();
+
+            assert.equal(url.href, `http://127.0.0.1:8080/${LOCAL_DATABASE_NAME}`);
+        });
+    });
 });