Bael 4781: Introduction to ZeroCode (#10482)

* small example of hexagonal architecture in java

* Bael-4781: Introduction to ZeroCode

* add readme

* Revert "small example of hexagonal architecture in java"

This reverts commit c0f96441

* refactoring

* refactoring

testing-modules/zerocode/src/main/java/com/baeldung/zerocode/User.java

@@ -0,0 +1,31 @@
+package com.baeldung.zerocode;
+
+public class User {
+    private String id;
+    private String firstName;
+    private String lastName;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+}

testing-modules/zerocode/src/main/java/com/baeldung/zerocode/ZerocodeApplication.java

@@ -0,0 +1,38 @@
+package com.baeldung.zerocode;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.*;
+
+@SpringBootApplication
+@RestController
+@RequestMapping("/api/users")
+public class ZerocodeApplication {
+    private List<User> users = new ArrayList<>();
+
+    public static void main(String[] args) {
+        SpringApplication.run(ZerocodeApplication.class, args);
+    }
+
+    @PostMapping
+    public ResponseEntity create(@RequestBody User user) {
+        if (!StringUtils.hasText(user.getFirstName())) {
+            return new ResponseEntity("firstName can't be empty!", HttpStatus.BAD_REQUEST);
+        }
+        if (!StringUtils.hasText(user.getLastName())) {
+            return new ResponseEntity("lastName can't be empty!", HttpStatus.BAD_REQUEST);
+        }
+        user.setId(UUID.randomUUID()
+            .toString());
+        users.add(user);
+        return new ResponseEntity(user, HttpStatus.CREATED);
+    }
+
+}

testing-modules/zerocode/src/test/java/com/baeldung/zerocode/rest/UserEndpointIT.java

@@ -0,0 +1,18 @@
+package com.baeldung.zerocode.rest;
+
+import org.jsmart.zerocode.core.domain.Scenario;
+import org.jsmart.zerocode.core.domain.TargetEnv;
+import org.jsmart.zerocode.core.runner.ZeroCodeUnitRunner;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(ZeroCodeUnitRunner.class)
+@TargetEnv("rest_api.properties")
+public class UserEndpointIT {
+
+    @Test
+    @Scenario("rest/user_create_test.json")
+    public void test_user_creation_endpoint() {
+    }
+
+}

testing-modules/zerocode/src/test/resources/rest/user_create_test.json

@@ -0,0 +1,39 @@
+{
+  "scenarioName": "test user creation endpoint",
+  "steps": [
+    {
+      "name": "test_successful_creation",
+      "url": "/api/users",
+      "method": "POST",
+      "request": {
+        "body": {
+          "firstName": "John",
+          "lastName": "Doe"
+        }
+      },
+      "verify": {
+        "status": 201,
+        "body": {
+          "id": "$NOT.NULL",
+          "firstName": "John",
+          "lastName": "Doe"
+        }
+      }
+    },
+    {
+      "name": "test_firstname_validation",
+      "url": "/api/users",
+      "method": "POST",
+      "request": {
+        "body": {
+          "firstName": "",
+          "lastName": "Doe"
+        }
+      },
+      "assertions": {
+        "status": 400,
+        "rawBody": "firstName can't be empty!"
+      }
+    }
+  ]
+}

testing-modules/zerocode/src/test/resources/rest_api.properties

@@ -0,0 +1,3 @@
+web.application.endpoint.host=http://localhost
+web.application.endpoint.port=8080
+web.application.endpoint.context=