This patch adds a new third-party library that implements an ELF dynamic linker.

third_party/crazy_linker/crazy_linker/src/crazy_linker_line_reader_unittest.cpp

Index: third_party/crazy_linker/crazy_linker/src/crazy_linker_line_reader_unittest.cpp
diff --git a/third_party/crazy_linker/crazy_linker/src/crazy_linker_line_reader_unittest.cpp b/third_party/crazy_linker/crazy_linker/src/crazy_linker_line_reader_unittest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..87476015962843dddaea401e77eebf5e261d581f
--- /dev/null
+++ b/third_party/crazy_linker/crazy_linker/src/crazy_linker_line_reader_unittest.cpp
@@ -0,0 +1,81 @@
+// Copyright (c) 2013 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 "crazy_linker_line_reader.h"
+
+#include <minitest/minitest.h>
+
+#include "crazy_linker_system_mock.h"
+
+namespace crazy {
+
+static const char kFilePath[] = "/tmp/foo.txt";
+
+TEST(LineReader, EmptyConstructor) {
+  LineReader reader;
+  EXPECT_FALSE(reader.GetNextLine());
+}
+
+TEST(LineReader, EmptyFile) {
+  SystemMock sys;
+  sys.AddRegularFile(kFilePath, "", 0);
+
+  LineReader reader(kFilePath);
+  EXPECT_FALSE(reader.GetNextLine());
+}
+
+TEST(LineReader, SingleLineFile) {
+  SystemMock sys;
+  static const char kFile[] = "foo bar\n";
+  static const size_t kFileSize = sizeof(kFile) - 1;
+  sys.AddRegularFile(kFilePath, kFile, kFileSize);
+
+  LineReader reader(kFilePath);
+  EXPECT_TRUE(reader.GetNextLine());
+  EXPECT_EQ(kFileSize, reader.length());
+  EXPECT_MEMEQ(kFile, kFileSize, reader.line(), reader.length());
+  EXPECT_FALSE(reader.GetNextLine());
+}
+
+TEST(LineReader, SingleLineFileUnterminated) {
+  SystemMock sys;
+  static const char kFile[] = "foo bar";
+  static const size_t kFileSize = sizeof(kFile) - 1;
+  sys.AddRegularFile(kFilePath, kFile, kFileSize);
+
+  LineReader reader(kFilePath);
+  EXPECT_TRUE(reader.GetNextLine());
+  // The LineReader will add a newline to the last line.
+  EXPECT_EQ(kFileSize + 1, reader.length());
+  EXPECT_MEMEQ(kFile, kFileSize, reader.line(), reader.length() - 1);
+  EXPECT_EQ('\n', reader.line()[reader.length() - 1]);
+  EXPECT_FALSE(reader.GetNextLine());
+}
+
+TEST(LineReader, MultiLineFile) {
+  SystemMock sys;
+  static const char kFile[] =
+    "This is a multi\n"
+    "line text file that to test the crazy::LineReader class implementation\n"
+    "And this is a very long text line to check that the class properly handles them, through the help of dynamic allocation or something. Yadda yadda yadda yadda. No newline";
+  static const size_t kFileSize = sizeof(kFile) - 1;
+  sys.AddRegularFile(kFilePath, kFile, kFileSize);
+
+  LineReader reader(kFilePath);
+
+  EXPECT_TRUE(reader.GetNextLine());
+  EXPECT_MEMEQ("This is a multi\n", 16, reader.line(), reader.length());
+
+  EXPECT_TRUE(reader.GetNextLine());
+  EXPECT_MEMEQ("line text file that to test the crazy::LineReader class implementation\n",
+               88 - 17, reader.line(), reader.length());
+
+  EXPECT_TRUE(reader.GetNextLine());
+  EXPECT_MEMEQ("And this is a very long text line to check that the class properly handles them, through the help of dynamic allocation or something. Yadda yadda yadda yadda. No newline\n",
+               187 - 17, reader.line(), reader.length());
+
+  EXPECT_FALSE(reader.GetNextLine());
+}
+
+}  // namespace crazy