diff --git a/test/parser/custom_parser_test.dart b/test/parser/custom_parser_test.dart
index b1bb6fb..b228fcd 100644
--- a/test/parser/custom_parser_test.dart
+++ b/test/parser/custom_parser_test.dart
@@ -11,6 +11,27 @@ void main() {
 
     const tvalidUsername = "twitter.com/ABC38_";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<CustomParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, "Custom");
+        expect(
+          parser.hosts,
+          const ["*"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const []);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/github_parser_test.dart b/test/parser/github_parser_test.dart
index b283a2c..82d5e49 100644
--- a/test/parser/github_parser_test.dart
+++ b/test/parser/github_parser_test.dart
@@ -11,6 +11,27 @@ void main() {
 
     const tvalidUsername = "ABC38_";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<GithubParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, "GitHub");
+        expect(
+          parser.hosts,
+          const ["github.com", "www.github.com"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/gitlab_parser_test.dart b/test/parser/gitlab_parser_test.dart
index 00d474d..0aa4d08 100644
--- a/test/parser/gitlab_parser_test.dart
+++ b/test/parser/gitlab_parser_test.dart
@@ -11,6 +11,27 @@ void main() {
 
     const tvalidUsername = "ABC38_";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<GitlabParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, "GitLab");
+        expect(
+          parser.hosts,
+          const ["gitlab.com", "www.gitlab.com"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/linkedin_parser_test.dart b/test/parser/linkedin_parser_test.dart
index 7786f89..03969a5 100644
--- a/test/parser/linkedin_parser_test.dart
+++ b/test/parser/linkedin_parser_test.dart
@@ -11,6 +11,27 @@ void main() {
 
     const tvalidUsername = "ABC38_";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<LinkedInParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, "LinkedIn");
+        expect(
+          parser.hosts,
+          const ["linkedin.com", "www.linkedin.com"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["in", "{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/medium_parser_test.dart b/test/parser/medium_parser_test.dart
index 8a67e44..3fa5ba0 100644
--- a/test/parser/medium_parser_test.dart
+++ b/test/parser/medium_parser_test.dart
@@ -12,6 +12,27 @@ void main() {
     const tvalidUsername = "rouxguillaume";
     const tvalidUsername2 = "@rouxguillaume";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<MediumParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, "Medium");
+        expect(
+          parser.hosts,
+          const ["medium.com", "{user}.medium.com", "www.medium.com"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/stack_overflow_parser_test.dart b/test/parser/stack_overflow_parser_test.dart
index f38a970..cbb285d 100644
--- a/test/parser/stack_overflow_parser_test.dart
+++ b/test/parser/stack_overflow_parser_test.dart
@@ -11,6 +11,27 @@ void main() {
     const tInvalidUrl = 'https://stackoverflow.com/13923049';
     const tvalidUsername = "13923049";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<StackOverflowParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, 'Stack Overflow');
+        expect(
+          parser.hosts,
+          const ["stackoverflow.com", "www.stackoverflow.com"],
+        );
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["users", "{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);
diff --git a/test/parser/twitter_parser_test.dart b/test/parser/twitter_parser_test.dart
index a53f915..aa22c2c 100644
--- a/test/parser/twitter_parser_test.dart
+++ b/test/parser/twitter_parser_test.dart
@@ -11,6 +11,24 @@ void main() {
 
     const tvalidUsername = "ABC38_";
 
+    group('super constructor', () {
+      test('should return a valid instance', () {
+        expect(parser, isNotNull);
+      });
+
+      test('should return a valid instance', () {
+        expect(parser, isA<TwitterParser>());
+      });
+
+      test('should contain the right parameters', () {
+        expect(parser.service, 'Twitter');
+        expect(parser.hosts, const ["twitter.com", "www.twitter.com"]);
+        expect(parser.schemes, const ["https", "http", ""]);
+        expect(parser.pathSegments, const ["{user}"]);
+        expect(parser.queryParameters, const {});
+      });
+    });
+
     group('isValid', () {
       test('A valid URL should return true', () {
         expect(parser.isValid(tValidUrl), true);