Example for Unit Test (#52)

unit_testing/test/unit/formValidator_test.dart

@@ -0,0 +1,58 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:unit_testing/helpers.dart';
+
+void main() {
+  group(
+    'Email test',
+    () {
+      test(
+        'Valid Email test',
+        () {
+          final result = FormValidator.validateEmail("example@flutter.com");
+          expect(result, isNull);
+        },
+      );
+      test(
+        'Invalid Email test',
+        () {
+          final result = FormValidator.validateEmail("abcf");
+          expect(result, 'please enter valid email');
+        },
+      );
+      test(
+        'Empty email test',
+        () {
+          final result = FormValidator.validateEmail("");
+          expect(result, 'please enter email');
+        },
+      );
+    },
+  );
+
+  group(
+    'Password Test',
+    () {
+      test(
+        'Empty password test',
+        () {
+          final resutl = FormValidator.validatePassword("");
+          expect(resutl, 'please enter your password');
+        },
+      );
+      test(
+        'Valid password test',
+        () {
+          final resutl = FormValidator.validatePassword("hello@123456");
+          expect(resutl, isNull);
+        },
+      );
+      test(
+        'Invalid password test',
+        () {
+          final resutl = FormValidator.validatePassword("hello");
+          expect(resutl, 'minimum lenght of password must be 8 characters');
+        },
+      );
+    },
+  );
+}