feat: 지원 하지 않는 메소드 예외 처리

tomcat/src/main/java/org/apache/coyote/controller/AbstractController.java

@@ -0,0 +1,26 @@
+package org.apache.coyote.controller;
+
+import org.apache.coyote.controller.exception.UnsupportedRequestMethodException;
+import org.apache.coyote.httprequest.HttpRequest;
+import org.apache.coyote.httprequest.RequestMethod;
+import org.apache.coyote.httpresponse.HttpResponse;
+
+public abstract class AbstractController implements Controller {
+
+    @Override
+    public void service(final HttpRequest httpRequest, final HttpResponse httpResponse) {
+        if (httpRequest.isSameRequestMethod(RequestMethod.GET)) {
+            doGet(httpRequest, httpResponse);
+            return;
+        }
+        if (httpRequest.isSameRequestMethod(RequestMethod.POST)) {
+            doPost(httpRequest, httpResponse);
+            return;
+        }
+        throw new UnsupportedRequestMethodException();
+    }
+
+    protected abstract void doPost(final HttpRequest httpRequest, final HttpResponse httpResponse);
+
+    protected abstract void doGet(final HttpRequest httpRequest, final HttpResponse httpResponse);
+}

tomcat/src/main/java/org/apache/coyote/controller/Controller.java

@@ -0,0 +1,9 @@
+package org.apache.coyote.controller;
+
+import org.apache.coyote.httprequest.HttpRequest;
+import org.apache.coyote.httpresponse.HttpResponse;
+
+public interface Controller {
+
+    void service(final HttpRequest httpRequest, final HttpResponse httpResponse);
+}

tomcat/src/main/java/org/apache/coyote/controller/exception/UnsupportedRequestMethodException.java

@@ -0,0 +1,8 @@
+package org.apache.coyote.controller.exception;
+
+public class UnsupportedRequestMethodException extends IllegalArgumentException {
+
+    public UnsupportedRequestMethodException() {
+        super("지원하지 않는 Request Method 입니다.");
+    }
+}

tomcat/src/test/java/org/apache/coyote/controller/AbstractControllerTest.java

@@ -0,0 +1,40 @@
+package org.apache.coyote.controller;
+
+import org.apache.coyote.controller.exception.UnsupportedRequestMethodException;
+import org.apache.coyote.httprequest.HttpRequest;
+import org.apache.coyote.httpresponse.HttpResponse;
+import org.apache.coyote.httpresponse.handler.HandlerTestSupport;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.*;
+
+@SuppressWarnings("NonAsciiCharacters")
+class AbstractControllerTest extends HandlerTestSupport {
+
+    @Test
+    void 지원하지_않는_메소드에_대해_예외를_터트린다() {
+        // given
+        final String input = String.join("\r\n",
+                "DELETE /login HTTP/1.1",
+                "Host: localhost:8080",
+                "Connection: keep-alive",
+                "Accept: */*");
+        final HttpRequest httpRequest = super.makeHttpRequest(input);
+        final HttpResponse httpResponse = HttpResponse.init(httpRequest.getHttpVersion());
+
+        // when
+        final AbstractController abstractController = new AbstractController() {
+            @Override
+            protected void doPost(final HttpRequest httpRequest, final HttpResponse httpResponse) {
+            }
+
+            @Override
+            protected void doGet(final HttpRequest httpRequest, final HttpResponse httpResponse) {
+            }
+        };
+
+        // then
+        assertThatThrownBy(() -> abstractController.service(httpRequest, httpResponse))
+                .isInstanceOf(UnsupportedRequestMethodException.class);
+    }
+}