--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <algorithm>
+#include <cstring>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "common/safe_io.h"
+
+#include "gtest/gtest.h"
+
+
+TEST(SafeIO, safe_read_file) {
+ const char *fname = "safe_read_testfile";
+ ::unlink(fname);
+ int fd = ::open(fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
+ ASSERT_NE(fd, -1);
+ const char buf[] = "0123456789";
+ for (int i = 0; i < 8; i++) {
+ ASSERT_EQ((ssize_t)sizeof(buf), write(fd, buf, sizeof(buf)));
+ }
+ ::close(fd);
+ char rdata[80];
+ ASSERT_EQ((int)sizeof(rdata),
+ safe_read_file(".", fname, rdata, sizeof(rdata)));
+ for (char *p = rdata, *end = rdata+sizeof(rdata); p < end; p+=sizeof(buf)) {
+ ASSERT_EQ(0, std::memcmp(p, buf, std::min(size_t(end-p), sizeof(buf))));
+ }
+ ::unlink(fname);
+}
+
+// Local Variables:
+// compile-command: "cd ../.. ;
+// make unittest_safe_io &&
+// ./unittest_safe_io"
+// End: