GH-1025 Add mapping test to validate DELETE

spring-cloud-function-web/src/test/java/org/springframework/cloud/function/web/mvc/GeneralIntegrationTests.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2023-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.function.web.mvc;
+
+import java.net.URI;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.cloud.function.json.JsonMapper;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.RequestEntity;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.web.multipart.MultipartFile;
+
+import static org.assertj.core.api.Assertions.assertThat;
+/**
+ *
+ * @author Oleg Zhurakousky
+ */
+public class GeneralIntegrationTests {
+
+	@Test
+	public void testMappedAndUnmappedDeleteFunction() throws Exception {
+		ApplicationContext context = SpringApplication.run(MultipleConsumerConfiguration.class, "--server.port=0", "--spring.cloud.function.http.DELETE=delete2");
+		String port = context.getEnvironment().getProperty("local.server.port");
+		JsonMapper mapper = context.getBean(JsonMapper.class);
+		TestRestTemplate template = new TestRestTemplate();
+
+		ResponseEntity<Void> result = template.exchange(
+				RequestEntity.delete(new URI("http://localhost:" + port + "/delete1"))
+				.build(), Void.class);
+		assertThat(result.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR);
+
+		result = template.exchange(
+				RequestEntity.delete(new URI("http://localhost:" + port + "/delete2"))
+				.build(), Void.class);
+		assertThat(result.getStatusCode()).isEqualTo(HttpStatus.NO_CONTENT);
+	}
+
+
+	@EnableAutoConfiguration
+	protected static class MultipleConsumerConfiguration {
+
+		@Bean
+		public Consumer<String> delete1() {
+			return v -> {};
+		}
+
+		@Bean
+		public Consumer<String> delete2() {
+			return v -> {};
+		}
+	}
+}