Device manager - device details section (#9169)

* add device metadata table

* test devicedetails

* handle missing last activity metadata

* remove debugs

* revert tile style changes

* fuss with indentation

* code formatting

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

@@ -0,0 +1,53 @@
+/*
+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 React from 'react';
+import { render } from '@testing-library/react';
+
+import DeviceDetails from '../../../../../src/components/views/settings/devices/DeviceDetails';
+
+describe('<DeviceDetails />', () => {
+    const baseDevice = {
+        device_id: 'my-device',
+    };
+    const defaultProps = {
+        device: baseDevice,
+    };
+    const getComponent = (props = {}) => <DeviceDetails {...defaultProps} {...props} />;
+    // 14.03.2022 16:15
+    const now = 1647270879403;
+    jest.useFakeTimers();
+
+    beforeEach(() => {
+        jest.setSystemTime(now);
+    });
+
+    it('renders device without metadata', () => {
+        const { container } = render(getComponent());
+        expect(container).toMatchSnapshot();
+    });
+
+    it('renders device with metadata', () => {
+        const device = {
+            ...baseDevice,
+            display_name: 'My Device',
+            last_seen_ip: '123.456.789',
+            last_seen_ts: now - 60000000,
+        };
+        const { container } = render(getComponent({ device }));
+        expect(container).toMatchSnapshot();
+    });
+});