fix(test): Added test

test/components/lock_widget_test.dart

@@ -0,0 +1,28 @@
+import 'package:device_widgets/components/lock_widget.dart';
+import 'package:device_widgets/providers/lock_provider.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/mockito.dart';
+import 'package:provider/provider.dart';
+
+class MockLockProvider extends Mock implements LockProvider {}
+
+MockLockProvider mockProvider = MockLockProvider();
+
+Widget getAppWithLockWidget() {
+  return MaterialApp(
+      home: ChangeNotifierProvider<LockProvider>.value(
+          value: mockProvider, child: LockWidget()));
+}
+
+void main() {
+  testWidgets('Circular progress indicator should be shown when loading',
+      (WidgetTester tester) async {
+    when(mockProvider.loadingDetail).thenReturn(true);
+    await tester.pumpWidget(getAppWithLockWidget());
+
+    expect(find.byWidgetPredicate((w) => w is CircularProgressIndicator),
+        findsOneWidget);
+  });
+}