Automatically remap Command key on an Apple keyboard to Control [part 2 of 2 - Chrome part]

chrome/browser/ui/views/ash/key_rewriter_unittest.cc

+// Copyright (c) 2012 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 "base/basictypes.h"
+#include "chrome/browser/ui/views/ash/key_rewriter.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/aura/event.h"
+
+#if defined(OS_CHROMEOS)
+#include "ui/base/x/x11_util.h"
+
+#include <X11/keysymdef.h>
+#include <X11/Xlib.h>
+
+namespace {
+
+void InitXKeyEvent(unsigned int x_keycode,
+                   unsigned int x_state,
+                   XEvent* event) {
+  ui::InitXKeyEventForTesting(ui::ET_KEY_PRESSED,
+                              ui::VKEY_A,  // dummy
+                              0,  // dummy
+                              event);
+  event->xkey.keycode = x_keycode;
+  event->xkey.state = x_state;
+}
+
+}  // namespace
+#endif
+
+TEST(KeyRewriterTest, TestGetDeviceType) {
+  // This is the typical string which an Apple keyboard sends.
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType("Apple Inc. Apple Keyboard"));
+
+  // Other cases we accept.
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType("Apple Keyboard"));
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType("apple keyboard"));
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType("apple keyboard."));
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType("apple.keyboard."));
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            KeyRewriter::GetDeviceType(".apple.keyboard."));
+
+  // Dell, Microsoft, Logitech, ... should be recognized as a kDevicePcKeyboard.
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType("Dell Dell USB Entry Keyboard"));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType("Microsoft Natural Ergonomic Keyboard"));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType("CHESEN USB Keyboard"));
+
+  // Some corner cases.
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard, KeyRewriter::GetDeviceType(""));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType("."));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType(". "));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType(" ."));
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            KeyRewriter::GetDeviceType("not-an-apple keyboard"));
+}
+
+TEST(KeyRewriterTest, TestDeviceAdded) {
+  KeyRewriter rewriter;
+  EXPECT_TRUE(rewriter.device_id_to_type_for_testing().empty());
+  EXPECT_EQ(KeyRewriter::kDevicePcKeyboard,
+            rewriter.DeviceAddedForTesting(0, "PC Keyboard"));
+  EXPECT_EQ(1U, rewriter.device_id_to_type_for_testing().size());
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            rewriter.DeviceAddedForTesting(1, "Apple Keyboard"));
+  EXPECT_EQ(2U, rewriter.device_id_to_type_for_testing().size());
+  // Try to reuse the first ID.
+  EXPECT_EQ(KeyRewriter::kDeviceAppleKeyboard,
+            rewriter.DeviceAddedForTesting(0, "Apple Keyboard"));
+  EXPECT_EQ(2U, rewriter.device_id_to_type_for_testing().size());
+}
+
+#if defined(OS_CHROMEOS)
+TEST(KeyRewriterTest, TestRewriteCommandToControl) {
+  XEvent xev;
+
+  // First, test with a PC keyboard.
+  KeyRewriter rewriter;
+  rewriter.DeviceAddedForTesting(0, "PC Keyboard");
+  rewriter.set_last_device_id_for_testing(0);
+  {
+    // XK_a, Alt modifier.
+    InitXKeyEvent(38, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+  {
+    // XK_a, Win modifier.
+    InitXKeyEvent(38, Mod4Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod4Mask), xkey.state);
+  }
+  {
+    // XK_a, Alt+Win modifier.
+    InitXKeyEvent(38, Mod1Mask | Mod4Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask | Mod4Mask), xkey.state);
+  }
+  {
+    // XK_Super_L (left Windows key), Alt modifier.
+    InitXKeyEvent(133, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(133U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+  {
+    // XK_Super_R (right Windows key), Alt modifier.
+    InitXKeyEvent(134, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(134U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+
+  // An Apple keyboard reuse the ID, zero.
+  rewriter.DeviceAddedForTesting(0, "Apple Keyboard");
+  rewriter.set_last_device_id_for_testing(0);
+  {
+    // XK_a, Alt modifier.
+    InitXKeyEvent(38, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+  {
+    // XK_a, Win modifier.
+    InitXKeyEvent(38, Mod4Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(ControlMask), xkey.state);
+  }
+  {
+    // XK_a, Alt+Win modifier.
+    InitXKeyEvent(38, Mod1Mask | Mod4Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(38U, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask | ControlMask), xkey.state);
+  }
+  {
+    // XK_Super_L (left Windows key), Alt modifier.
+    InitXKeyEvent(133, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(37U /* Control_L */, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+  {
+    // XK_Super_R (right Windows key), Alt modifier.
+    InitXKeyEvent(134, Mod1Mask, &xev);
+    aura::KeyEvent keyevent(&xev, false /* is_char */);
+    rewriter.RewriteCommandToControlForTesting(&keyevent);
+    const XKeyEvent& xkey = keyevent.native_event()->xkey;
+    // Confirm the original values are preserved.
+    EXPECT_EQ(105U /* Control_R */, xkey.keycode);
+    EXPECT_EQ(static_cast<unsigned int>(Mod1Mask), xkey.state);
+  }
+}
+#endif  // OS_CHROMEOS