Add more integration tests

spring-boot-starter/spring-boot-starter-web/src/test/java/com/getyourguide/openapi/validation/integration/OpenApiValidationIntegrationTest.java

@@ -123,6 +123,18 @@ public void whenTestOptionsCallThenShouldNotValidate() throws Exception {
         assertEquals(0, openApiViolationLogger.getViolations().size());
     }
 
+    @Test
+    public void whenTestNoBodyThenShouldReturnSuccessAndNoViolation() throws Exception {
+        mockMvc.perform(post("/test/no-body"))
+            .andExpectAll(
+                status().isNoContent(),
+                content().string(Matchers.blankOrNullString())
+            );
+        Thread.sleep(100);
+
+        assertEquals(0, openApiViolationLogger.getViolations().size());
+    }
+
     @Nullable
     private OpenApiViolation getViolationByRule(List<OpenApiViolation> violations, String rule) {
         return violations.stream()

spring-boot-starter/spring-boot-starter-web/src/test/java/com/getyourguide/openapi/validation/integration/controller/DefaultRestController.java

@@ -34,4 +34,9 @@ public ResponseEntity<TestResponse> postTest(PostTestRequest postTestRequest) {
         }
         return ResponseEntity.noContent().build();
     }
+
+    @Override
+    public ResponseEntity<TestResponse> postTestNoBody() {
+        return ResponseEntity.noContent().build();
+    }
 }

spring-boot-starter/spring-boot-starter-webflux/src/test/java/com/getyourguide/openapi/validation/integration/OpenApiValidationIntegrationTest.java

@@ -2,13 +2,17 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 import com.getyourguide.openapi.validation.api.model.OpenApiViolation;
 import com.getyourguide.openapi.validation.test.TestViolationLogger;
 import com.getyourguide.openapi.validation.test.openapi.webflux.model.TestResponse;
 import java.util.List;
 import java.util.Optional;
 import javax.annotation.Nullable;
+import org.hamcrest.Matchers;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -134,6 +138,19 @@ public void whenTestOptionsCallThenShouldNotValidate() throws Exception {
         assertEquals(0, openApiViolationLogger.getViolations().size());
     }
 
+    @Test
+    public void whenTestNoBodyThenShouldReturnSuccessAndNoViolation() throws Exception {
+        webTestClient
+            .post().uri("/test/no-body")
+            .accept(MediaType.APPLICATION_JSON)
+            .exchange()
+            .expectStatus().isNoContent()
+            .expectBody().isEmpty();
+        Thread.sleep(100);
+
+        assertEquals(0, openApiViolationLogger.getViolations().size());
+    }
+
     @Nullable
     private OpenApiViolation getViolationByRule(List<OpenApiViolation> violations, String rule) {
         return violations.stream()

spring-boot-starter/spring-boot-starter-webflux/src/test/java/com/getyourguide/openapi/validation/integration/controller/DefaultRestController.java

@@ -43,4 +43,9 @@ public Mono<ResponseEntity<TestResponse>> postTest(
             return Mono.just(ResponseEntity.noContent().build());
         });
     }
+
+    @Override
+    public Mono<ResponseEntity<TestResponse>> postTestNoBody(ServerWebExchange exchange) {
+        return Mono.just(ResponseEntity.noContent().build());
+    }
 }

test/openapi.yaml

@@ -78,6 +78,19 @@ paths:
                 "$ref": "#/components/schemas/TestResponse"
         '204':
           description: Successful response without content
+  "/test/no-body":
+    post:
+      description: Post test without request/response body
+      operationId: postTestNoBody
+      responses:
+        '200':
+          description: Successful response
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/schemas/TestResponse"
+        '204':
+          description: Successful response without content
 components:
   schemas:
     TestResponse: