Add missing file from previous change.

Change-Id: Id25000162a9ed76ce756842bdc09fe9afff9528f

tests/sys_vfs_test.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <sys/vfs.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <string>
+
+template <typename StatFsT> void Check(StatFsT& sb) {
+  EXPECT_EQ(4096, static_cast<int>(sb.f_bsize));
+  EXPECT_EQ(0U, sb.f_bfree);
+  EXPECT_EQ(0U, sb.f_ffree);
+  EXPECT_EQ(0, sb.f_fsid.__val[0]);
+  EXPECT_EQ(0, sb.f_fsid.__val[1]);
+  EXPECT_EQ(255, static_cast<int>(sb.f_namelen));
+}
+
+TEST(sys_vfs, statfs) {
+  struct statfs sb;
+  ASSERT_EQ(0, statfs("/proc", &sb));
+  Check(sb);
+}
+
+TEST(sys_vfs, statfs64) {
+  struct statfs64 sb;
+  ASSERT_EQ(0, statfs64("/proc", &sb));
+  Check(sb);
+}
+
+TEST(sys_vfs, fstatfs) {
+  struct statfs sb;
+  int fd = open("/proc", O_RDONLY);
+  ASSERT_EQ(0, fstatfs(fd, &sb));
+  close(fd);
+  Check(sb);
+}
+TEST(sys_vfs, fstatfs64) {
+  struct statfs64 sb;
+  int fd = open("/proc", O_RDONLY);
+  ASSERT_EQ(0, fstatfs64(fd, &sb));
+  close(fd);
+  Check(sb);
+}