feat: Add Response.html convenience method

Author: thced

src/main/java/com/retailsvc/http/Response.java

@@ -101,6 +101,12 @@ public static Response text(int status, String body) {
         status, body.getBytes(StandardCharsets.UTF_8), "text/plain; charset=UTF-8", Map.of());
   }
 
+  /** {@code status} with {@code body} written as UTF-8 with {@code Content-Type: text/html}. */
+  public static Response html(int status, String body) {
+    return new Response(
+        status, body.getBytes(StandardCharsets.UTF_8), "text/html; charset=UTF-8", Map.of());
+  }
+
   /**
    * {@code status} with pre-serialised {@code bytes} written verbatim under {@code contentType}.
    */

src/test/java/com/retailsvc/http/ResponseTest.java

@@ -4,8 +4,10 @@
 import static java.net.HttpURLConnection.HTTP_CREATED;
 import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
 import static java.net.HttpURLConnection.HTTP_NOT_IMPLEMENTED;
+import static java.net.HttpURLConnection.HTTP_OK;
 import static org.assertj.core.api.Assertions.assertThat;
 
+import java.nio.charset.StandardCharsets;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
 
@@ -64,6 +66,15 @@ void notFoundWithBody() {
     assertThat(r.body()).isEqualTo(problem);
   }
 
+  @Test
+  void htmlBody() {
+    Response r = Response.html(HTTP_OK, "<h1>hi</h1>");
+
+    assertThat(r.status()).isEqualTo(HTTP_OK);
+    assertThat(r.contentType()).isEqualTo("text/html; charset=UTF-8");
+    assertThat((byte[]) r.body()).isEqualTo("<h1>hi</h1>".getBytes(StandardCharsets.UTF_8));
+  }
+
   @Test
   void notImplementedNoBody() {
     Response r = Response.notImplemented();