BAEL-6258 | Article code (#13782)

* BAEL-6258 | Article code

* Renaming test class

libraries-data-2/src/test/java/com/baeldung/swaggerparser/SwaggerParserUnitTest.java

@@ -0,0 +1,65 @@
+package com.baeldung.swaggerparser;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+import io.swagger.parser.OpenAPIParser;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+
+public class SwaggerParserUnitTest {
+
+    private static String OPENAPI_SPECIFICATION_STRING = "{\"openapi\":\"3.0.0\",\"info\":{\"title\":\"User APIs\",\"version\":\"1.0\"},\"servers\":[{\"url\":\"https://jsonplaceholder.typicode.com\",\"description\":\"Json Place Holder Service\"}],\"paths\":{\"/users/{id}\":{\"parameters\":[{\"schema\":{\"type\":\"integer\"},\"name\":\"id\",\"in\":\"path\",\"required\":true}],\"get\":{\"summary\":\"Fetch user by ID\",\"tags\":[\"User\"],\"responses\":{\"200\":{\"description\":\"OK\",\"content\":{\"application/json\":{\"schema\":{\"type\":\"object\",\"properties\":{\"id\":{\"type\":\"integer\"},\"name\":{\"type\":\"string\"}}}}}}},\"operationId\":\"get-users-user_id\",\"description\":\"Retrieve a specific user by ID\"}}}}";
+
+    @Test
+    public void givenAValidOpenAPIYAMLFile_whenParsing_thenCheckIfParsed() {
+        SwaggerParseResult result = new OpenAPIParser().readLocation("valid-openapi-sample.yml", null, null);
+
+        OpenAPI openAPI = result.getOpenAPI();
+
+        assertNotNull(openAPI);
+    }
+
+    @Test
+    public void givenAValidOpenAPIYAMLFile_whenParsing_thenCheckIfNotErrors() {
+        SwaggerParseResult result = new OpenAPIParser().readLocation("valid-openapi-sample.yml", null, null);
+
+        List<String> messages = result.getMessages();
+
+        assertTrue(messages.isEmpty());
+    }
+
+    @Test
+    public void givenAnInvalidOpenAPIYAMLFile_whenParsing_thenCheckIfErrors() {
+        SwaggerParseResult result = new OpenAPIParser().readLocation("invalid-openapi-sample.yml", null, null);
+
+        List<String> messages = result.getMessages();
+
+        assertFalse(messages.isEmpty());
+    }
+
+    @Test
+    public void givenAValidOpenAPISpecificationString_whenParsing_thenCheckIfParsed() {
+        SwaggerParseResult result = new OpenAPIParser().readContents(OPENAPI_SPECIFICATION_STRING, null, null);
+
+        OpenAPI openAPI = result.getOpenAPI();
+
+        assertNotNull(openAPI);
+    }
+
+    @Test
+    public void givenAValidOpenAPISpecificationString_whenParsing_thenCheckIfNotErrors() {
+        SwaggerParseResult result = new OpenAPIParser().readLocation(OPENAPI_SPECIFICATION_STRING, null, null);
+
+        List<String> messages = result.getMessages();
+
+        assertNull(messages);
+    }
+
+}

libraries-data-2/src/test/resources/invalid-openapi-sample.yml

@@ -0,0 +1,32 @@
+openapi: 3.0.0
+info:
+  title: User APIs
+  version: '1.0'
+servers:
+  - description: Json Place Holder Service
+paths:
+  /users/{id}:
+    parameters:
+      - schema:
+          type: integer
+        name: id
+        in: path
+        required: true
+    get:
+      summary: Fetch user by ID
+      tags:
+        - User
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  id:
+                    type: integer
+                  name:
+                    type: string
+      operationId: get-users-user_id
+      description: Retrieve a specific user by ID

libraries-data-2/src/test/resources/valid-openapi-sample.yml

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: User APIs
+  version: '1.0'
+servers:
+  - url: https://jsonplaceholder.typicode.com
+    description: Json Place Holder Service
+paths:
+  /users/{id}:
+    parameters:
+      - schema:
+          type: integer
+        name: id
+        in: path
+        required: true
+    get:
+      summary: Fetch user by ID
+      tags:
+        - User
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  id:
+                    type: integer
+                  name:
+                    type: string
+      operationId: get-users-user_id
+      description: Retrieve a specific user by ID