test(neon): test NeonPlatform

Signed-off-by: Nikolas Rimikis <rimikis.nikolas@gmail.com>

packages/neon/neon/test/neon_platform_test.dart

@@ -0,0 +1,12 @@
+import 'package:neon/src/platform/platform.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('NeonPlatform', () async {
+    expect(() => NeonPlatform.instance, throwsA(isA<StateError>()));
+
+    await NeonPlatform.setup();
+
+    expect(NeonPlatform.instance, isA<NeonPlatform>());
+  });
+}