fix: do not modify fetch options.method (#1232)

Author: yury-s

playwright/src/main/java/com/microsoft/playwright/impl/APIRequestContextImpl.java

@@ -193,7 +193,7 @@ public String storageState(StorageStateOptions options) {
   }
 
   private static RequestOptionsImpl ensureOptions(RequestOptions options, String method) {
-    RequestOptionsImpl impl = (RequestOptionsImpl) options;
+    RequestOptionsImpl impl = Utils.clone((RequestOptionsImpl) options);
     if (impl == null) {
       impl = new RequestOptionsImpl();
     }

playwright/src/main/java/com/microsoft/playwright/impl/Utils.java

@@ -18,6 +18,7 @@
 
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
+import com.microsoft.playwright.ElementHandle;
 import com.microsoft.playwright.PlaywrightException;
 import com.microsoft.playwright.options.FilePayload;
 import com.microsoft.playwright.options.HttpHeader;
@@ -80,6 +81,14 @@ static <F, T> T convertType(F f, Class<T> t) {
     }
   }
 
+  static <T> T clone(T f) {
+    if (f == null) {
+      return f;
+    }
+    return convertType(f, (Class<T>) f.getClass());
+  }
+
+
   static Set<Character> escapeGlobChars = new HashSet<>(Arrays.asList('/', '$', '^', '+', '.', '(', ')', '=', '!', '|'));
 
   static String globToRegex(String glob) {

playwright/src/test/java/com/microsoft/playwright/TestGlobalFetch.java

@@ -380,4 +380,35 @@ void shouldThrowAnErrorWhenMaxRedirectsIsLessThan0() {
     }
     request.dispose();
   }
+
+  @Test
+  void shouldNotModifyRequestMethodInOptions() {
+    APIRequestContext request = playwright.request().newContext();
+    server.setRoute("/empty.html", exchange -> {
+      exchange.getResponseHeaders().set("Content-type", "text/plain");
+      exchange.sendResponseHeaders(200, 0);
+      try (Writer writer = new OutputStreamWriter(exchange.getResponseBody())) {
+        writer.write(exchange.getRequestMethod());
+      }
+    });
+    RequestOptions options = RequestOptions.create();
+    options.setTimeout(10000);
+    {
+      APIResponse response = request.fetch(server.EMPTY_PAGE, options);
+      assertTrue(response.ok());
+      assertEquals("GET", response.text());
+    }
+    {
+      APIResponse response = request.delete(server.EMPTY_PAGE, options);
+      assertTrue(response.ok());
+      assertEquals("DELETE", response.text());
+    }
+    {
+      APIResponse response = request.put(server.EMPTY_PAGE, options);
+      assertTrue(response.ok());
+      assertEquals("PUT", response.text());
+    }
+    request.dispose();
+  }
+
 }