Implement File API

test/DefaultFileSystem.cpp

+#include <AdblockPlus.h>
+#include <gtest/gtest.h>
+
+#include "../src/Utils.h"
+
+namespace
+{
+  const std::string testPath = "libadblockplus-test-file";
+
+  void WriteString(AdblockPlus::FileSystem& fileSystem,
+                   const std::string& content)
+  {
+    std::tr1::shared_ptr<std::stringstream> input(new std::stringstream);
+    *input << content;
+    fileSystem.Write(testPath, input);
+  }
+}
+
+TEST(DefaultFileSystemTest, WriteReadRemove)
+{
+  AdblockPlus::DefaultFileSystem fileSystem;
+  WriteString(fileSystem, "foo");
+  std::string output = AdblockPlus::Utils::Slurp(*fileSystem.Read(testPath));
+  fileSystem.Remove(testPath);
+  ASSERT_EQ("foo", output);
+}
+
+TEST(DefaultFileSystemTest, StatWorkingDirectory)
+{
+  AdblockPlus::DefaultFileSystem fileSystem;
+  const AdblockPlus::FileSystem::StatResult result = fileSystem.Stat(".");
+  ASSERT_TRUE(result.exists);
+  ASSERT_TRUE(result.isDirectory);
+  ASSERT_FALSE(result.isFile);
+  ASSERT_NE(0, result.lastModified);
+}
+
+TEST(DefaultFileSystemTest, WriteMoveStatRemove)
+{
+  AdblockPlus::DefaultFileSystem fileSystem;
+  WriteString(fileSystem, "foo");
+  AdblockPlus::FileSystem::StatResult result = fileSystem.Stat(testPath);
+  ASSERT_TRUE(result.exists);
+  ASSERT_TRUE(result.isFile);
+  ASSERT_FALSE(result.isDirectory);
+  ASSERT_NE(0, result.lastModified);
+  const std::string newTestPath = testPath + "-new";
+  fileSystem.Move(testPath, newTestPath);
+  result = fileSystem.Stat(testPath);
+  ASSERT_FALSE(result.exists);
+  result = fileSystem.Stat(newTestPath);
+  ASSERT_TRUE(result.exists);
+  fileSystem.Remove(newTestPath);
+  result = fileSystem.Stat(newTestPath);
+  ASSERT_FALSE(result.exists);
+}