[Android] Synthetic composition event should have DomKey 'Unidentified'

content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
 
 #include <android/input.h>
 #include <android/keycodes.h>
 
 #include "base/android/jni_android.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/android/key_event_utils.h"
 #include "ui/events/gesture_detection/motion_event.h"
 #include "ui/events/keycodes/dom/dom_key.h"
 #include "ui/events/keycodes/dom/keycode_converter.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ScopedJavaLocalRef;
 using blink::WebKeyboardEvent;
 
 namespace {
 
 const int kCombiningAccent = 0x80000000;
 const int kCombiningAccentMask = 0x7fffffff;
+const int kCompositionKeyCode = 229;
 
 WebKeyboardEvent CreateFakeWebKeyboardEvent(JNIEnv* env,
                                             int key_code,
                                             int web_modifier,
                                             int unicode_character) {
   ScopedJavaLocalRef<jobject> keydown_event =
       ui::events::android::CreateKeyEvent(env, ui::MotionEvent::ACTION_DOWN,
                                           key_code);
 
   WebKeyboardEvent web_event = content::WebKeyboardEventBuilder::Build(
@@ skipping 96 matching lines @@
         << ui::KeycodeConverter::DomKeyToKeyString(web_event.domKey);
 
     // Tests DomKey with Ctrl and Alt.
     web_event = CreateFakeWebKeyboardEvent(
         env, entry.key_code,
         WebKeyboardEvent::ControlKey | WebKeyboardEvent::AltKey, 0);
     EXPECT_EQ(ui::DomKey::FromCharacter(entry.character), web_event.domKey)
         << ui::KeycodeConverter::DomKeyToKeyString(web_event.domKey);
   }
 }
+
+TEST(WebInputEventBuilderAndroidTest, DomKeySyntheticKeyEvent) {
+  JNIEnv* env = AttachCurrentThread();
+
+  // Simulating ImeAdapter.java::sendCompositionToNative(), send
+  // COMPOSITION_KEY_CODE for synthetic key events.
+  WebKeyboardEvent web_event =
+      CreateFakeWebKeyboardEvent(env, kCompositionKeyCode, 0, 0);
+  EXPECT_EQ(kCompositionKeyCode, web_event.nativeKeyCode);
+  EXPECT_EQ(ui::DomKey::UNIDENTIFIED, web_event.domKey);
+}