Device manager - extract filtered device list header (#9323)

* extract filtered device list header

* stylelint

test/components/views/settings/devices/FilteredDeviceListHeader-test.tsx

@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { render } from '@testing-library/react';
+import React from 'react';
+
+import FilteredDeviceListHeader from '../../../../../src/components/views/settings/devices/FilteredDeviceListHeader';
+
+describe('<FilteredDeviceListHeader />', () => {
+    const defaultProps = {
+        selectedDeviceCount: 0,
+        children: <div>test</div>,
+        ['data-testid']: 'test123',
+    };
+    const getComponent = (props = {}) => (<FilteredDeviceListHeader {...defaultProps} {...props} />);
+
+    it('renders correctly when no devices are selected', () => {
+        const { container } = render(getComponent());
+        expect(container).toMatchSnapshot();
+    });
+
+    it('renders correctly when some devices are selected', () => {
+        const { getByText } = render(getComponent({ selectedDeviceCount: 2 }));
+        expect(getByText('2 sessions selected')).toBeTruthy();
+    });
+});

test/components/views/settings/devices/__snapshots__/FilteredDeviceListHeader-test.tsx.snap

@@ -0,0 +1,19 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<FilteredDeviceListHeader /> renders correctly when no devices are selected 1`] = `
+<div>
+  <div
+    class="mx_FilteredDeviceListHeader"
+    data-testid="test123"
+  >
+    <span
+      class="mx_FilteredDeviceListHeader_label"
+    >
+      Sessions
+    </span>
+    <div>
+      test
+    </div>
+  </div>
+</div>
+`;

test/components/views/settings/tabs/user/SessionManagerTab-test.tsx

@@ -279,7 +279,7 @@ describe('<SessionManagerTab />', () => {
         await flushPromisesWithFakeTimers();
 
         // unverified filter is set
-        expect(container.querySelector('.mx_FilteredDeviceList_header')).toMatchSnapshot();
+        expect(container.querySelector('.mx_FilteredDeviceListHeader')).toMatchSnapshot();
     });
 
     describe('device detail expansion', () => {

test/components/views/settings/tabs/user/__snapshots__/SessionManagerTab-test.tsx.snap

@@ -17,10 +17,10 @@ exports[`<SessionManagerTab /> Sign out Signs out of current device 1`] = `
 
 exports[`<SessionManagerTab /> goes to filtered list from security recommendations 1`] = `
 <div
-  class="mx_FilteredDeviceList_header"
+  class="mx_FilteredDeviceListHeader"
 >
   <span
-    class="mx_FilteredDeviceList_headerLabel"
+    class="mx_FilteredDeviceListHeader_label"
   >
     Sessions
   </span>