Update from https://crrev.com/333737

third_party/android_crazy_linker/src/src/crazy_linker_system_unittest.cpp

Index: third_party/android_crazy_linker/src/src/crazy_linker_system_unittest.cpp
diff --git a/third_party/android_crazy_linker/src/src/crazy_linker_system_unittest.cpp b/third_party/android_crazy_linker/src/src/crazy_linker_system_unittest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..8bf082f64e6e9670fa0270df922f5989486e86d9
--- /dev/null
+++ b/third_party/android_crazy_linker/src/src/crazy_linker_system_unittest.cpp
@@ -0,0 +1,42 @@
+// Copyright 2014 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_system.h"
+
+#include <minitest/minitest.h>
+#include <stdlib.h>
+#include "crazy_linker_system_mock.h"
+
+namespace crazy {
+
+TEST(System, SingleFile) {
+  static const char kPath[] = "/tmp/foo/bar";
+
+  static const char kString[] = "Hello World";
+  const size_t kStringLen = sizeof(kString) - 1;
+
+  SystemMock sys;
+  sys.AddRegularFile(kPath, kString, kStringLen);
+
+  char buff2[kStringLen + 10];
+  FileDescriptor fd(kPath);
+
+  EXPECT_EQ(kStringLen, fd.Read(buff2, sizeof(buff2)));
+  buff2[kStringLen] = '\0';
+  EXPECT_STREQ(kString, buff2);
+}
+
+TEST(System, PathExists) {
+  SystemMock sys;
+  sys.AddRegularFile("/tmp/foo", "FOO", 3);
+
+  EXPECT_TRUE(PathExists("/tmp/foo"));
+}
+
+TEST(System, PathExistsWithBadPath) {
+  SystemMock sys;
+  EXPECT_FALSE(PathExists("/tmp/foo"));
+}
+
+}  // namespace crazy