[Chromoting] Handle CR-LF correctly when transferring text items to and from the clipboard on a Win…

remoting/host/clipboard_util_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 "remoting/host/clipboard_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace remoting {
+
+TEST(ClipboardUtilTest, ReplaceLfByCrLf) {
+  EXPECT_EQ("ab", ClipboardUtil::ReplaceLfByCrLf("ab"));
+  EXPECT_EQ("\r\nab", ClipboardUtil::ReplaceLfByCrLf("\nab"));
+  EXPECT_EQ("\r\nab\r\n", ClipboardUtil::ReplaceLfByCrLf("\nab\n"));
+  EXPECT_EQ("\r\nab\r\ncd", ClipboardUtil::ReplaceLfByCrLf("\nab\ncd"));
+  EXPECT_EQ("\r\nab\r\ncd\r\n", ClipboardUtil::ReplaceLfByCrLf("\nab\ncd\n"));
+  EXPECT_EQ("\r\n\r\nab\r\n\r\ncd\r\n\r\n",
+      ClipboardUtil::ReplaceLfByCrLf("\n\nab\n\ncd\n\n"));
+}
+
+TEST(ClipboardUtilTest, ReplaceLfByCrLfSpeed) {
+  int kLineSize = 128;
+  std::string line(kLineSize, 'a');
+  line[kLineSize - 1] = '\n';
+  // Make a 10M string.
+  int kLineNum = 10 * 1024 * 1024 / kLineSize;
+  std::string buffer;
+  buffer.resize(kLineNum * kLineSize);
+  for (int i = 0; i < kLineNum; ++i) {
+    memcpy(&buffer[i * kLineSize], &line[0], kLineSize);
+  }
+  // Convert the string.
+  buffer = ClipboardUtil::ReplaceLfByCrLf(buffer);
+  // Check the converted string.
+  EXPECT_EQ((kLineSize + 1) * kLineNum, buffer.size());
+  const char* p = &buffer[0];
+  for (int i = 0; i < kLineNum; ++i) {
+    EXPECT_EQ(0, memcmp(&line[0], p, kLineSize - 1));
+    p += kLineSize - 1;
+    EXPECT_EQ('\r', *p++);
+    EXPECT_EQ('\n', *p++);
+  }
+}
+
+TEST(ClipboardUtilTest, ReplaceCrLfByLf) {
+  EXPECT_EQ("ab", ClipboardUtil::ReplaceCrLfByLf("ab"));
+  EXPECT_EQ("\nab", ClipboardUtil::ReplaceCrLfByLf("\r\nab"));
+  EXPECT_EQ("\nab\n", ClipboardUtil::ReplaceCrLfByLf("\r\nab\r\n"));
+  EXPECT_EQ("\nab\ncd", ClipboardUtil::ReplaceCrLfByLf("\r\nab\r\ncd"));
+  EXPECT_EQ("\nab\ncd\n", ClipboardUtil::ReplaceCrLfByLf("\r\nab\r\ncd\n"));
+  EXPECT_EQ("\n\nab\n\ncd\n\n",
+      ClipboardUtil::ReplaceCrLfByLf("\r\n\r\nab\r\n\r\ncd\r\n\r\n"));
+  EXPECT_EQ("\rab\rcd\r", ClipboardUtil::ReplaceCrLfByLf("\rab\rcd\r"));
+}
+
+TEST(ClipboardUtilTest, ReplaceCrLfByLfSpeed) {
+  int kLineSize = 128;
+  std::string line(kLineSize, 'a');
+  line[kLineSize - 2] = '\r';
+  line[kLineSize - 1] = '\n';
+  // Make a 10M string.
+  int kLineNum = 10 * 1024 * 1024 / kLineSize;
+  std::string buffer;
+  buffer.resize(kLineNum * kLineSize);
+  for (int i = 0; i < kLineNum; ++i) {
+    memcpy(&buffer[i * kLineSize], &line[0], kLineSize);
+  }
+  // Convert the string.
+  buffer = ClipboardUtil::ReplaceCrLfByLf(buffer);
+  // Check the converted string.
+  EXPECT_EQ((kLineSize - 1) * kLineNum, buffer.size());
+  const char* p = &buffer[0];
+  for (int i = 0; i < kLineNum; ++i) {
+    EXPECT_EQ(0, memcmp(&line[0], p, kLineSize - 2));
+    p += kLineSize - 2;
+    EXPECT_EQ('\n', *p++);
+  }
+}
+
+}  // namespace remoting