diff --git a/packages/koin/lib/src/context/context_handler.dart b/packages/koin/lib/src/context/context_handler.dart
index ec41372..590c2a5 100644
--- a/packages/koin/lib/src/context/context_handler.dart
+++ b/packages/koin/lib/src/context/context_handler.dart
@@ -19,9 +19,8 @@ import '../koin_application.dart';
 import '../koin_dart.dart';
 import 'context.dart';
 
-///
+//ignore: avoid_classes_with_only_static_members
 /// Help hold any implementation of KoinContext
-///
 class KoinContextHandler {
   static KoinContext? _context;
 
diff --git a/packages/koin/lib/src/definition/definition.dart b/packages/koin/lib/src/definition/definition.dart
index f7be47c..afb046d 100644
--- a/packages/koin/lib/src/definition/definition.dart
+++ b/packages/koin/lib/src/definition/definition.dart
@@ -5,6 +5,7 @@ typedef ProviderCreate<T> = T Function(Scope scope);
 
 typedef ProviderCreateParam<T, A> = T Function(Scope scope, A param);
 
+// ignore: one_member_abstracts
 abstract class ProviderCreateBase<T> {
   T create(Parameter? parameter, Scope scope);
 }
diff --git a/packages/koin/lib/src/instance/instance_factory.dart b/packages/koin/lib/src/instance/instance_factory.dart
index 642934c..f7c58d1 100644
--- a/packages/koin/lib/src/instance/instance_factory.dart
+++ b/packages/koin/lib/src/instance/instance_factory.dart
@@ -44,9 +44,9 @@ abstract class InstanceFactory<T> {
   ///
   T createState(InstanceContext context) {
     try {
-      final parameters = context.parameter;
+      final parameter = context.parameter;
       koin.loggerObserver.onCreate(this);
-      return beanDefinition.definition.create(parameters, context.scope);
+      return beanDefinition.definition.create(parameter, context.scope);
     } catch (erro) {
       koin.logger.error('''
 Instance creation error : could not create instance for $beanDefinition: ${erro.toString()}''');
diff --git a/packages/koin/lib/src/scope/scope.dart b/packages/koin/lib/src/scope/scope.dart
index 5891a92..5a5733f 100644
--- a/packages/koin/lib/src/scope/scope.dart
+++ b/packages/koin/lib/src/scope/scope.dart
@@ -30,6 +30,7 @@ import '../logger.dart';
 import '../qualifier.dart';
 import 'scope_definition.dart';
 
+// ignore: one_member_abstracts
 abstract class ScopeCallback {
   void onScopeClose();
 }
diff --git a/packages/koin/test/core/error_check_test.dart b/packages/koin/test/core/error_check_test.dart
index 2aea5a7..5ee30d4 100644
--- a/packages/koin/test/core/error_check_test.dart
+++ b/packages/koin/test/core/error_check_test.dart
@@ -41,6 +41,7 @@ void main() {
   });
 
   // TODO
+  // Analyze a way to treat
   /*
   test('cycle error', () {
     var app = koinApplication((app) {
diff --git a/packages/koin/test/core/parameters_injection_test.dart b/packages/koin/test/core/parameters_injection_test.dart
index f575efc..736fc14 100644
--- a/packages/koin/test/core/parameters_injection_test.dart
+++ b/packages/koin/test/core/parameters_injection_test.dart
@@ -96,18 +96,13 @@ void main() {
     expect(b.id, 43);
   });
 
-  // TODO
-  // Analyze if it is really necessary.
   test('shoud trow a exception when not pass parameters - getWithParams', () {
     var app = koinApplication((app) {
       app.module(
           Module()..singleWithParam<MySingle, int>((s, id) => MySingle(id)));
     });
 
-    final mySingle = app.koin.get<MySingle>();
-
     expect(() => app.koin.get<MySingle>(),
         throwsA(isA<InstanceCreationException>()));
-    print(mySingle);
-  }, skip: true);
+  });
 }
diff --git a/packages/koin_flutter/lib/src/scope_observer.dart b/packages/koin_flutter/lib/src/scope_observer.dart
index 6d2023d..f15440d 100644
--- a/packages/koin_flutter/lib/src/scope_observer.dart
+++ b/packages/koin_flutter/lib/src/scope_observer.dart
@@ -1,6 +1,7 @@
 import 'package:flutter/widgets.dart';
 import 'package:koin/internals.dart';
 
+// ignore: avoid_classes_with_only_static_members
 class FlutterKoinScopeObserver {
   static ScopeWidgetObersever scopeWidgetObserver = ScopeWidgetObersever();
 }
diff --git a/packages/koin_flutter/test/widget_extension_test.dart b/packages/koin_flutter/test/widget_extension_test.dart
index 6bffc8d..5026aae 100644
--- a/packages/koin_flutter/test/widget_extension_test.dart
+++ b/packages/koin_flutter/test/widget_extension_test.dart
@@ -86,12 +86,12 @@ void main() {
 
     // Create the Finders.
     final componentSingleIdFinder = find.text('1');
-    //final componentBSingleFinder = find.text('10');
+    final componentBSingleFinder = find.text('10');
     final componentIdFactoryFinder = find.text('60');
     final componentScopedFinder = find.text('30');
 
     expect(componentSingleIdFinder, findsNWidgets(1));
-    //expect(componentBSingleFinder, findsOneWidget);
+    expect(componentBSingleFinder, findsOneWidget);
     expect(componentIdFactoryFinder, findsOneWidget);
     expect(componentScopedFinder, findsOneWidget);
   });
diff --git a/packages/koin_flutter/test/widgets/widget_extension/pages.dart b/packages/koin_flutter/test/widgets/widget_extension/pages.dart
index a91e5e1..7f95fb4 100644
--- a/packages/koin_flutter/test/widgets/widget_extension/pages.dart
+++ b/packages/koin_flutter/test/widgets/widget_extension/pages.dart
@@ -59,8 +59,7 @@ class _HomePageWithParamsState extends State<HomePageWithParams>
       body: Column(
         children: <Widget>[
           Text("${componentSingle.id.toString()}"),
-          // TODO
-          // Text("${componentBSingle.id.toString()}"),
+          Text("${componentBSingle.testId().toString()}"),
           Text("${componentScoped.id.toString()}"),
           Text("${componentFactory.id.toString()}"),
         ],
diff --git a/packages/koin_test/example/test/koin_test_example_test.dart b/packages/koin_test/example/test/koin_test_example_test.dart
index 63ca1e1..f737930 100644
--- a/packages/koin_test/example/test/koin_test_example_test.dart
+++ b/packages/koin_test/example/test/koin_test_example_test.dart
@@ -53,7 +53,7 @@ void main() {
 
   testModule('shoud be a valid module', customModule,
       checkParameters: checkParametersOf({
-        ComponentC: ComponentCParam('Fisrt', "Last"),
+        ComponentC: ComponentCParam('Fisrt', 'Last'),
       }));
 
   test('shoud be a invalid module', () {
diff --git a/packages/koin_test/lib/src/error/error.dart b/packages/koin_test/lib/src/error/error.dart
index f6ea95b..cbf4c0a 100644
--- a/packages/koin_test/lib/src/error/error.dart
+++ b/packages/koin_test/lib/src/error/error.dart
@@ -32,6 +32,6 @@ abstract class BrokenDefinitionException implements Exception {
 
   @override
   String toString() {
-    return '${runtimeType}: $msg';
+    return '$runtimeType: $msg';
   }
 }