Supports fake key events for setComposition/commitText by on-screen keyboards.

ui/wm/core/input_method_event_filter_unittest.cc

Index: ui/wm/core/input_method_event_filter_unittest.cc
diff --git a/ui/wm/core/input_method_event_filter_unittest.cc b/ui/wm/core/input_method_event_filter_unittest.cc
index c5daa677ff726f319b6c74f616e7c475fb300f10..6a349c6f73873fd6692e8f1b058b02be9df0fec4 100644
--- a/ui/wm/core/input_method_event_filter_unittest.cc
+++ b/ui/wm/core/input_method_event_filter_unittest.cc
@@ -10,6 +10,9 @@
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window_event_dispatcher.h"
+#include "ui/base/ime/input_method.h"
+#include "ui/events/event.h"
+#include "ui/events/event_processor.h"
 #include "ui/events/test/test_event_handler.h"
 #include "ui/wm/core/compound_event_filter.h"
 #include "ui/wm/core/default_activation_client.h"
@@ -56,6 +59,8 @@ TEST_F(InputMethodEventFilterTest, TestInputMethodKeyEventPropagation) {
   InputMethodEventFilter input_method_event_filter(
       host()->GetAcceleratedWidget());
   root_filter.AddHandler(&input_method_event_filter);
+  input_method_event_filter.UpdateTargetDispatcher(
+      root_window()->GetHost()->event_processor());
 
   // Add TestEventFilter to the RootWindow.
   ui::test::TestEventHandler test_filter;
@@ -91,4 +96,41 @@ TEST_F(InputMethodEventFilterTest, TestInputMethodKeyEventPropagation) {
   root_window()->RemovePreTargetHandler(&root_filter);
 }
 
+// Tests event dispathching for IME composing.
+TEST_F(InputMethodEventFilterTest, TestEventDispatching) {
+  CompoundEventFilter root_filter;
+  root_window()->AddPreTargetHandler(&root_filter);
+
+  InputMethodEventFilter input_method_event_filter(
+      host()->GetAcceleratedWidget());
+  root_filter.AddHandler(&input_method_event_filter);
+
+  // Add TestEventFilter to the RootWindow.
+  ui::test::TestEventHandler test_filter;
+  root_filter.AddHandler(&test_filter);
+
+  ui::KeyEvent evt(ui::ET_KEY_PRESSED,
+                   ui::VKEY_PROCESSKEY,
+                   ui::EF_IME_FABRICATED_KEY,
+                   false);
+  // Without onKeyEvent() being called, and no event processor, calls
+  // DispatchKeyEventPostIME().
+  input_method_event_filter.input_method()->DispatchKeyEvent(evt);
+  // Verifies no key event happened because InputMethodEventFilter::
+  // DispatchKeyEventPostIME() returns false.
+  EXPECT_EQ(0, test_filter.num_key_events());
+
+  // Without onKeyEvent() being called, update event processor, calls
+  // DispatchKeyEventPostIME().
+  input_method_event_filter.UpdateTargetDispatcher(
+      root_window()->GetHost()->event_processor());
+  input_method_event_filter.input_method()->DispatchKeyEvent(evt);
+  // Verifies 1 key event happened because InputMethodEventFilter::
+  // DispatchKeyEventPostIME() returns true.
+  EXPECT_EQ(1, test_filter.num_key_events());
+
+  root_filter.RemoveHandler(&input_method_event_filter);
+  root_window()->RemovePreTargetHandler(&root_filter);
+}
+
 }  // namespace wm