Add JSON serialization for ShadowRoot

.gitignore

@@ -136,3 +136,4 @@ bazel-testlogs
 javascript/node/selenium-webdriver/.vscode/settings.json
 
 dotnet-bin
+.metadata/

java/spotbugs-excludes.xml

@@ -194,4 +194,14 @@
     <Class name="org.openqa.selenium.testing.StaticResources"/>
     <Bug pattern="NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE"/>
   </Match>
+
+  <Match>
+    <Class name="org.openqa.selenium.remote.WebElementToJsonConverter" />
+    <Bug pattern="NM_SAME_SIMPLE_NAME_AS_INTERFACE" />
+  </Match>
+
+  <Match>
+    <Class name="org.openqa.selenium.remote.internal.WebElementToJsonConverter" />
+    <Bug pattern="NM_SAME_SIMPLE_NAME_AS_SUPERCLASS" />
+  </Match>
 </FindBugsFilter>

java/src/org/openqa/selenium/remote/RemoteWebDriver.java

@@ -89,7 +89,6 @@
 import org.openqa.selenium.remote.http.ClientConfig;
 import org.openqa.selenium.remote.http.ConnectionFailedException;
 import org.openqa.selenium.remote.http.HttpClient;
-import org.openqa.selenium.remote.internal.WebElementToJsonConverter;
 import org.openqa.selenium.remote.tracing.TracedHttpClient;
 import org.openqa.selenium.remote.tracing.Tracer;
 import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryTracer;

java/src/org/openqa/selenium/remote/WebElementToJsonConverter.java

@@ -0,0 +1,93 @@
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you 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
+//
+//   http://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.openqa.selenium.remote;
+
+import static java.util.stream.Collectors.toList;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import org.openqa.selenium.WrapsElement;
+
+/**
+ * Converts {@link RemoteWebElement} objects, which may be {@link WrapsElement wrapped}, into their
+ * JSON representation as defined by the WebDriver wire protocol. This class will recursively
+ * convert Lists and Maps to catch nested references.
+ *
+ * @see <a
+ *     href="https://github.com/SeleniumHQ/selenium/wiki/JsonWireProtocol#webelement-json-object">
+ *     WebDriver JSON Wire Protocol</a>
+ */
+public class WebElementToJsonConverter implements Function<Object, Object> {
+  @Override
+  public Object apply(Object arg) {
+    if (arg == null || arg instanceof String || arg instanceof Boolean || arg instanceof Number) {
+      return arg;
+    }
+
+    while (arg instanceof WrapsElement) {
+      arg = ((WrapsElement) arg).getWrappedElement();
+    }
+
+    if (arg instanceof RemoteWebElement) {
+      return Map.of(Dialect.W3C.getEncodedElementKey(), ((RemoteWebElement) arg).getId());
+    }
+
+    if (arg instanceof ShadowRoot) {
+      return Map.of(Dialect.W3C.getShadowRootElementKey(), ((ShadowRoot) arg).getId());
+    }
+
+    if (arg.getClass().isArray()) {
+      arg = arrayToList(arg);
+    }
+
+    if (arg instanceof Collection<?>) {
+      Collection<?> args = (Collection<?>) arg;
+      return args.stream().map(this).collect(toList());
+    }
+
+    if (arg instanceof Map<?, ?>) {
+      Map<?, ?> args = (Map<?, ?>) arg;
+      Map<String, Object> converted = new HashMap<>(args.size());
+      for (Map.Entry<?, ?> entry : args.entrySet()) {
+        Object key = entry.getKey();
+        if (!(key instanceof String)) {
+          throw new IllegalArgumentException(
+              "All keys in Map script arguments must be strings: " + key.getClass().getName());
+        }
+        converted.put((String) key, apply(entry.getValue()));
+      }
+      return converted;
+    }
+
+    throw new IllegalArgumentException(
+        "Argument is of an illegal type: " + arg.getClass().getName());
+  }
+
+  private static List<Object> arrayToList(Object array) {
+    List<Object> list = new ArrayList<>();
+    for (int i = 0; i < Array.getLength(array); i++) {
+      list.add(Array.get(array, i));
+    }
+    return list;
+  }
+}

java/src/org/openqa/selenium/remote/codec/w3c/W3CHttpCommandCodec.java

@@ -88,8 +88,8 @@
 import java.util.stream.Stream;
 import org.openqa.selenium.InvalidSelectorException;
 import org.openqa.selenium.WebDriverException;
+import org.openqa.selenium.remote.WebElementToJsonConverter;
 import org.openqa.selenium.remote.codec.AbstractHttpCommandCodec;
-import org.openqa.selenium.remote.internal.WebElementToJsonConverter;
 
 /**
  * A command codec that adheres to the W3C's WebDriver wire protocol.

java/src/org/openqa/selenium/remote/internal/WebElementToJsonConverter.java

@@ -17,75 +17,12 @@
 
 package org.openqa.selenium.remote.internal;
 
-import static java.util.stream.Collectors.toList;
-
-import java.lang.reflect.Array;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.function.Function;
-import org.openqa.selenium.WrapsElement;
-import org.openqa.selenium.remote.Dialect;
-import org.openqa.selenium.remote.RemoteWebElement;
-
 /**
- * Converts {@link RemoteWebElement} objects, which may be {@link WrapsElement wrapped}, into their
- * JSON representation as defined by the WebDriver wire protocol. This class will recursively
- * convert Lists and Maps to catch nested references.
+ * {@inheritDoc}
  *
- * @see <a
- *     href="https://github.com/SeleniumHQ/selenium/wiki/JsonWireProtocol#webelement-json-object">
- *     WebDriver JSON Wire Protocol</a>
+ * @deprecated This class has moved to a {@link org.openqa.selenium.remote.WebElementToJsonConverter
+ *     new location}.
  */
-public class WebElementToJsonConverter implements Function<Object, Object> {
-  @Override
-  public Object apply(Object arg) {
-    if (arg == null || arg instanceof String || arg instanceof Boolean || arg instanceof Number) {
-      return arg;
-    }
-
-    while (arg instanceof WrapsElement) {
-      arg = ((WrapsElement) arg).getWrappedElement();
-    }
-
-    if (arg instanceof RemoteWebElement) {
-      return Map.of(Dialect.W3C.getEncodedElementKey(), ((RemoteWebElement) arg).getId());
-    }
-
-    if (arg.getClass().isArray()) {
-      arg = arrayToList(arg);
-    }
-
-    if (arg instanceof Collection<?>) {
-      Collection<?> args = (Collection<?>) arg;
-      return args.stream().map(this).collect(toList());
-    }
-
-    if (arg instanceof Map<?, ?>) {
-      Map<?, ?> args = (Map<?, ?>) arg;
-      Map<String, Object> converted = new HashMap<>(args.size());
-      for (Map.Entry<?, ?> entry : args.entrySet()) {
-        Object key = entry.getKey();
-        if (!(key instanceof String)) {
-          throw new IllegalArgumentException(
-              "All keys in Map script arguments must be strings: " + key.getClass().getName());
-        }
-        converted.put((String) key, apply(entry.getValue()));
-      }
-      return converted;
-    }
-
-    throw new IllegalArgumentException(
-        "Argument is of an illegal type: " + arg.getClass().getName());
-  }
-
-  private static List<Object> arrayToList(Object array) {
-    List<Object> list = new ArrayList<>();
-    for (int i = 0; i < Array.getLength(array); i++) {
-      list.add(Array.get(array, i));
-    }
-    return list;
-  }
-}
+@Deprecated
+public class WebElementToJsonConverter
+    extends org.openqa.selenium.remote.WebElementToJsonConverter {}

java/test/org/openqa/selenium/remote/BUILD.bazel

@@ -29,6 +29,7 @@ java_test_suite(
         "//java/src/org/openqa/selenium/json",
         "//java/src/org/openqa/selenium/remote",
         "//java/src/org/openqa/selenium/support",
+        "//java/test/org/openqa/selenium:helpers",
         "//java/test/org/openqa/selenium/testing:annotations",
         artifact("org.assertj:assertj-core"),
         artifact("com.google.guava:guava"),

java/test/org/openqa/selenium/remote/internal/WebElementToJsonConverterTest.java → java/test/org/openqa/selenium/remote/WebElementToJsonConverterTest.java

@@ -15,7 +15,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
-package org.openqa.selenium.remote.internal;
+package org.openqa.selenium.remote;
 
 import static java.util.Arrays.asList;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -27,10 +27,10 @@
 import java.util.List;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
+import org.openqa.selenium.Capabilities;
+import org.openqa.selenium.ImmutableCapabilities;
 import org.openqa.selenium.WebElement;
 import org.openqa.selenium.WrappedWebElement;
-import org.openqa.selenium.remote.Dialect;
-import org.openqa.selenium.remote.RemoteWebElement;
 
 class WebElementToJsonConverterTest {
 
@@ -218,6 +218,15 @@ void convertsAnArrayWithAWebElement() {
         ImmutableMap.of(Dialect.W3C.getEncodedElementKey(), "abc123"));
   }
 
+  @Test
+  void shouldConvertShadowRoots() {
+    ShadowRoot context = new ShadowRoot(createIdleDriver(), "abc123");
+    Object value = CONVERTER.apply(new Object[] {context});
+    assertContentsInOrder(
+        new ArrayList<>((Collection<?>) value),
+        ImmutableMap.of(Dialect.W3C.getShadowRootElementKey(), "abc123"));
+  }
+
   private static WrappedWebElement wrapElement(WebElement element) {
     return new WrappedWebElement(element);
   }
@@ -235,4 +244,13 @@ private static void assertContentsInOrder(List<?> list, Object... expectedConten
     List<Object> expected = asList(expectedContents);
     assertThat(list).isEqualTo(expected);
   }
+
+  private static RemoteWebDriver createIdleDriver() {
+    return new RemoteWebDriver(cmd -> new Response(), new ImmutableCapabilities()) {
+      @Override
+      protected void startSession(Capabilities capabilities) {
+        // Do nothing
+      }
+    };
+  }
 }

java/test/org/openqa/selenium/remote/internal/BUILD.bazel

@@ -1,5 +1,5 @@
 load("@rules_jvm_external//:defs.bzl", "artifact")
-load("//java:defs.bzl", "JUNIT5_DEPS", "java_library", "java_test_suite")
+load("//java:defs.bzl", "JUNIT5_DEPS", "java_library")
 
 java_library(
     name = "test-lib",
@@ -30,22 +30,3 @@ java_library(
         artifact("io.netty:netty-transport"),
     ] + JUNIT5_DEPS,
 )
-
-java_test_suite(
-    name = "SmallTests",
-    size = "small",
-    srcs = glob(["*Test.java"]),
-    tags = [
-        "no-sandbox",
-    ],
-    deps = [
-        ":test-lib",
-        "//java/src/org/openqa/selenium:core",
-        "//java/src/org/openqa/selenium/remote",
-        "//java/src/org/openqa/selenium/remote/http",
-        "//java/test/org/openqa/selenium:helpers",
-        artifact("org.assertj:assertj-core"),
-        artifact("com.google.guava:guava"),
-        artifact("org.junit.jupiter:junit-jupiter-api"),
-    ] + JUNIT5_DEPS,
-)

java/test/org/openqa/selenium/support/pagefactory/UsingPageFactoryTest.java

@@ -27,7 +27,7 @@
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebElement;
 import org.openqa.selenium.remote.RemoteWebElement;
-import org.openqa.selenium.remote.internal.WebElementToJsonConverter;
+import org.openqa.selenium.remote.WebElementToJsonConverter;
 import org.openqa.selenium.support.ByIdOrName;
 import org.openqa.selenium.support.CacheLookup;
 import org.openqa.selenium.support.FindBy;