diff --git a/test/screens/metering/communication/bloc_communication_metering_test.dart b/test/screens/metering/communication/bloc_communication_metering_test.dart
index 3272745..604de75 100644
--- a/test/screens/metering/communication/bloc_communication_metering_test.dart
+++ b/test/screens/metering/communication/bloc_communication_metering_test.dart
@@ -46,6 +46,7 @@ void main() {
           bloc.add(const MeteringInProgressEvent(2));
           bloc.add(const MeasureEvent());
           bloc.add(const MeteringEndedEvent(2));
+          bloc.add(const MeteringEndedEvent(2));
         },
         expect: () => [
           isA<MeasureState>(),
diff --git a/test/screens/metering/communication/event_communication_metering_test.dart b/test/screens/metering/communication/event_communication_metering_test.dart
new file mode 100644
index 0000000..baec1bc
--- /dev/null
+++ b/test/screens/metering/communication/event_communication_metering_test.dart
@@ -0,0 +1,44 @@
+// ignore_for_file: prefer_const_constructors
+
+import 'package:lightmeter/screens/metering/communication/event_communication_metering.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(
+    '`MeteringInProgressEvent`',
+    () {
+      final a = MeteringInProgressEvent(1.0);
+      final b = MeteringInProgressEvent(1.0);
+      final c = MeteringInProgressEvent(2.0);
+      test('==', () {
+        expect(a == b && b == a, true);
+        expect(a != c && c != a, true);
+        expect(b != c && c != b, true);
+      });
+      test('hashCode', () {
+        expect(a.hashCode == b.hashCode, true);
+        expect(a.hashCode != c.hashCode, true);
+        expect(b.hashCode != c.hashCode, true);
+      });
+    },
+  );
+
+  group(
+    '`MeteringEndedEvent`',
+    () {
+      final a = MeteringEndedEvent(1.0);
+      final b = MeteringEndedEvent(1.0);
+      final c = MeteringEndedEvent(2.0);
+      test('==', () {
+        expect(a == b && b == a, true);
+        expect(a != c && c != a, true);
+        expect(b != c && c != b, true);
+      });
+      test('hashCode', () {
+        expect(a.hashCode == b.hashCode, true);
+        expect(a.hashCode != c.hashCode, true);
+        expect(b.hashCode != c.hashCode, true);
+      });
+    },
+  );
+}
diff --git a/test/screens/metering/communication/state_communication_metering_test.dart b/test/screens/metering/communication/state_communication_metering_test.dart
new file mode 100644
index 0000000..7076aab
--- /dev/null
+++ b/test/screens/metering/communication/state_communication_metering_test.dart
@@ -0,0 +1,44 @@
+// ignore_for_file: prefer_const_constructors
+
+import 'package:lightmeter/screens/metering/communication/state_communication_metering.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(
+    '`MeteringInProgressState`',
+    () {
+      final a = MeteringInProgressState(1.0);
+      final b = MeteringInProgressState(1.0);
+      final c = MeteringInProgressState(2.0);
+      test('==', () {
+        expect(a == b && b == a, true);
+        expect(a != c && c != a, true);
+        expect(b != c && c != b, true);
+      });
+      test('hashCode', () {
+        expect(a.hashCode == b.hashCode, true);
+        expect(a.hashCode != c.hashCode, true);
+        expect(b.hashCode != c.hashCode, true);
+      });
+    },
+  );
+
+  group(
+    '`MeteringEndedState`',
+    () {
+      final a = MeteringEndedState(1.0);
+      final b = MeteringEndedState(1.0);
+      final c = MeteringEndedState(2.0);
+      test('==', () {
+        expect(a == b && b == a, true);
+        expect(a != c && c != a, true);
+        expect(b != c && c != b, true);
+      });
+      test('hashCode', () {
+        expect(a.hashCode == b.hashCode, true);
+        expect(a.hashCode != c.hashCode, true);
+        expect(b.hashCode != c.hashCode, true);
+      });
+    },
+  );
+}