Handle HttpURLConnection switching GET->POST and not supporting PATCH

Author: Xtansia

Diff for: http-clients/url-connection-client/src/test/java/software/amazon/awssdk/http/urlconnection/UrlConnectionHttpClientDefaultWireMockTest.java

@@ -15,11 +15,16 @@
 
 package software.amazon.awssdk.http.urlconnection;
 
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import java.net.ProtocolException;
 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLSocketFactory;
+import org.junit.Test;
 import org.junit.jupiter.api.AfterEach;
 import software.amazon.awssdk.http.SdkHttpClient;
 import software.amazon.awssdk.http.SdkHttpClientDefaultTestSuite;
+import software.amazon.awssdk.http.SdkHttpMethod;
 
 public class UrlConnectionHttpClientDefaultWireMockTest extends SdkHttpClientDefaultTestSuite {
 
@@ -32,4 +37,20 @@ protected SdkHttpClient createSdkHttpClient() {
     public void reset() {
         HttpsURLConnection.setDefaultSSLSocketFactory((SSLSocketFactory) SSLSocketFactory.getDefault());
     }
+
+    @Test
+    @Override
+    public void supportsRequestBodyOnGetRequest() throws Exception {
+        // HttpURLConnection is hard-coded to switch GET requests with a body to POST requests, in #getOutputStream0.
+        testForResponseCode(200, SdkHttpMethod.GET, SdkHttpMethod.POST, true);
+    }
+
+    @Test
+    @Override
+    public void supportsRequestBodyOnPatchRequest() {
+        // HttpURLConnection does not support PATCH requests.
+        assertThatThrownBy(super::supportsRequestBodyOnPatchRequest)
+            .hasRootCauseInstanceOf(ProtocolException.class)
+            .hasRootCauseMessage("Invalid HTTP method: PATCH");
+    }
 }

Diff for: test/http-client-tests/src/main/java/software/amazon/awssdk/http/SdkHttpClientDefaultTestSuite.java

@@ -143,7 +143,14 @@ private void testForResponseCode(int returnCode) throws Exception {
         testForResponseCode(returnCode, SdkHttpMethod.POST, true);
     }
 
-    private void testForResponseCode(int returnCode, SdkHttpMethod method, boolean includeBody) throws Exception {
+    protected void testForResponseCode(int returnCode, SdkHttpMethod method, boolean includeBody) throws Exception {
+        testForResponseCode(returnCode, method, method, includeBody);
+    }
+
+    protected void testForResponseCode(int returnCode,
+                                       SdkHttpMethod method,
+                                       SdkHttpMethod expectedMethod,
+                                       boolean includeBody) throws Exception {
         SdkHttpClient client = createSdkHttpClient();
 
         stubForMockRequest(returnCode);
@@ -156,7 +163,7 @@ private void testForResponseCode(int returnCode, SdkHttpMethod method, boolean i
                                                                           .build())
                                         .call();
 
-        validateResponse(rsp, returnCode, method, includeBody);
+        validateResponse(rsp, returnCode, expectedMethod, includeBody);
     }
 
     protected void testForResponseCodeUsingHttps(SdkHttpClient client, int returnCode) throws Exception {