[KeyEvent Mac] Move WebInputEventFactory into chromium.

content/browser/renderer_host/input/web_input_event_builders_mac_unittest.mm

+// Copyright 2015 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_mac.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+using blink::WebKeyboardEvent;
+using blink::WebInputEvent;
+using content::WebKeyboardEventBuilder;
+
+namespace {
+
+struct KeyMappingEntry {
+  int mac_key_code;
+  unichar character;
+  int windows_key_code;
+};
+
+struct ModifierKey {
+  int mac_key_code;
+  int left_or_right_mask;
+  int non_specific_mask;
+};
+
+// Modifier keys, grouped into left/right pairs.
+const ModifierKey kModifierKeys[] = {
+    {56, 1 << 1, NSShiftKeyMask},      // Left Shift
+    {60, 1 << 2, NSShiftKeyMask},      // Right Shift
+    {55, 1 << 3, NSCommandKeyMask},    // Left Command
+    {54, 1 << 4, NSCommandKeyMask},    // Right Command
+    {58, 1 << 5, NSAlternateKeyMask},  // Left Alt
+    {61, 1 << 6, NSAlternateKeyMask},  // Right Alt
+    {59, 1 << 0, NSControlKeyMask},    // Left Control
+    {62, 1 << 13, NSControlKeyMask},   // Right Control
+};
+
+NSEvent* BuildFakeKeyEvent(NSUInteger key_code,
+                           unichar character,
+                           NSUInteger modifier_flags,
+                           NSEventType event_type) {
+  NSString* string = [NSString stringWithCharacters:&character length:1];
+  return [NSEvent keyEventWithType:event_type
+                          location:NSZeroPoint
+                     modifierFlags:modifier_flags
+                         timestamp:0.0
+                      windowNumber:0
+                           context:nil
+                        characters:string
+       charactersIgnoringModifiers:string
+                         isARepeat:NO
+                           keyCode:key_code];
+}
+
+}  // namespace
+
+// Test that arrow keys don't have numpad modifier set.
+TEST(WebInputEventBuilderMacTest, ArrowKeyNumPad) {
+  // Left
+  NSEvent* mac_event = BuildFakeKeyEvent(0x7B, NSLeftArrowFunctionKey,
+                                         NSNumericPadKeyMask, NSKeyDown);
+  WebKeyboardEvent web_event = WebKeyboardEventBuilder::Build(mac_event);
+  EXPECT_EQ(0, web_event.modifiers);
+
+  // Right
+  mac_event = BuildFakeKeyEvent(0x7C, NSRightArrowFunctionKey,
+                                NSNumericPadKeyMask, NSKeyDown);
+  web_event = WebKeyboardEventBuilder::Build(mac_event);
+  EXPECT_EQ(0, web_event.modifiers);
+
+  // Down
+  mac_event = BuildFakeKeyEvent(0x7D, NSDownArrowFunctionKey,
+                                NSNumericPadKeyMask, NSKeyDown);
+  web_event = WebKeyboardEventBuilder::Build(mac_event);
+  EXPECT_EQ(0, web_event.modifiers);
+
+  // Up
+  mac_event = BuildFakeKeyEvent(0x7E, NSUpArrowFunctionKey, NSNumericPadKeyMask,
+                                NSKeyDown);
+  web_event = WebKeyboardEventBuilder::Build(mac_event);
+  EXPECT_EQ(0, web_event.modifiers);
+}
+
+// Test that numpad keys get mapped correctly.
+TEST(WebInputEventBuilderMacTest, NumPadMapping) {
+  KeyMappingEntry table[] = {
+      {65, '.', ui::VKEY_DECIMAL},
+      {67, '*', ui::VKEY_MULTIPLY},
+      {69, '+', ui::VKEY_ADD},
+      {71, NSClearLineFunctionKey, ui::VKEY_CLEAR},
+      {75, '/', ui::VKEY_DIVIDE},
+      {76, 3, ui::VKEY_RETURN},
+      {78, '-', ui::VKEY_SUBTRACT},
+      {81, '=', ui::VKEY_OEM_PLUS},
+      {82, '0', ui::VKEY_0},
+      {83, '1', ui::VKEY_1},
+      {84, '2', ui::VKEY_2},
+      {85, '3', ui::VKEY_3},
+      {86, '4', ui::VKEY_4},
+      {87, '5', ui::VKEY_5},
+      {88, '6', ui::VKEY_6},
+      {89, '7', ui::VKEY_7},
+      {91, '8', ui::VKEY_8},
+      {92, '9', ui::VKEY_9},
+  };
+
+  for (size_t i = 0; i < arraysize(table); ++i) {
+    NSEvent* mac_event = BuildFakeKeyEvent(table[i].mac_key_code,
+                                           table[i].character, 0, NSKeyDown);
+    WebKeyboardEvent web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(table[i].windows_key_code, web_event.windowsKeyCode);
+  }
+}
+
+// Test that left- and right-hand modifier keys are interpreted correctly when
+// pressed simultaneously.
+TEST(WebInputEventFactoryTestMac, SimultaneousModifierKeys) {
+  for (size_t i = 0; i < arraysize(kModifierKeys) / 2; ++i) {
+    const ModifierKey& left = kModifierKeys[2 * i];
+    const ModifierKey& right = kModifierKeys[2 * i + 1];
+    // Press the left key.
+    NSEvent* mac_event = BuildFakeKeyEvent(
+        left.mac_key_code, 0, left.left_or_right_mask | left.non_specific_mask,
+        NSFlagsChanged);
+    WebKeyboardEvent web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(WebInputEvent::RawKeyDown, web_event.type);
+    // Press the right key
+    mac_event =
+        BuildFakeKeyEvent(right.mac_key_code, 0,
+                          left.left_or_right_mask | right.left_or_right_mask |
+                              left.non_specific_mask,
+                          NSFlagsChanged);
+    web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(WebInputEvent::RawKeyDown, web_event.type);
+    // Release the right key
+    mac_event = BuildFakeKeyEvent(
+        right.mac_key_code, 0, left.left_or_right_mask | left.non_specific_mask,
+        NSFlagsChanged);
+    // Release the left key
+    mac_event = BuildFakeKeyEvent(left.mac_key_code, 0, 0, NSFlagsChanged);
+    web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(WebInputEvent::KeyUp, web_event.type);
+  }
+}
+
+// Test that individual modifier keys are still reported correctly, even if the
+// undocumented left- or right-hand flags are not set.
+TEST(WebInputEventBuilderMacTest, MissingUndocumentedModifierFlags) {
+  for (size_t i = 0; i < arraysize(kModifierKeys); ++i) {
+    const ModifierKey& key = kModifierKeys[i];
+    NSEvent* mac_event = BuildFakeKeyEvent(
+        key.mac_key_code, 0, key.non_specific_mask, NSFlagsChanged);
+    WebKeyboardEvent web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(WebInputEvent::RawKeyDown, web_event.type);
+    mac_event = BuildFakeKeyEvent(key.mac_key_code, 0, 0, NSFlagsChanged);
+    web_event = WebKeyboardEventBuilder::Build(mac_event);
+    EXPECT_EQ(WebInputEvent::KeyUp, web_event.type);
+  }
+}