Example for Unit Test (#52)

unit_testing/lib/helpers.dart

@@ -0,0 +1,33 @@
+import 'package:unit_testing/api/Places.dart';
+import 'package:unit_testing/model/location.dart';
+
+class TouristPlaces {
+  static Future<List<Location>> getData() async {
+    // Here we can call a real API.
+    return await PlacesAPI().fetchAllPlaces();
+  }
+}
+
+class FormValidator {
+  static String validateEmail(String email) {
+    final pattern = RegExp(
+        r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+");
+    if (email.isEmpty) {
+      return "please enter email";
+    } else if (!pattern.hasMatch(email)) {
+      return "please enter valid email";
+    } else {
+      return null;
+    }
+  }
+
+  static String validatePassword(String password) {
+    if (password.isEmpty) {
+      return "please enter your password";
+    } else if (password.length < 8) {
+      return "minimum lenght of password must be 8 characters";
+    } else {
+      return null;
+    }
+  }
+}