diff --git a/test/utils/ev_from_bytes_test.dart b/test/utils/ev_from_bytes_test.dart
new file mode 100644
index 0000000..6f674ae
--- /dev/null
+++ b/test/utils/ev_from_bytes_test.dart
@@ -0,0 +1,14 @@
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lightmeter/utils/ev_from_bytes.dart';
+
+void main() {
+  test(
+    'evFromImage',
+    () {
+      final bytes = File('assets/camera_stub_image.jpg').readAsBytesSync();
+      expectLater(evFromImage(bytes), completion(8.25230310752341));
+    },
+  );
+}