diff --git a/libconfig-1.4.9/tests/tests.c b/libconfig-1.4.9/tests/tests.c
new file mode 100644
index 0000000000000000000000000000000000000000..e13e67f1722e72f668cb652a37f44277c8371f9d
--- /dev/null
+++ b/libconfig-1.4.9/tests/tests.c
@@ -0,0 +1,220 @@
+/* ----------------------------------------------------------------------------
+   libconfig - A library for processing structured configuration files
+   Copyright (C) 2005-2010  Mark A Lindner
+
+   This file is part of libconfig.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, see
+   <http://www.gnu.org/licenses/>.
+   ----------------------------------------------------------------------------
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#ifdef _MSC_VER
+#define snprintf _snprintf
+#endif
+
+#include <libconfig.h>
+#include <tinytest.h>
+
+/* ------------------------------------------------------------------------- */
+
+static void parse_and_compare(const char *input_file, const char *output_file)
+{
+  config_t cfg;
+  int ok;
+
+  config_init(&cfg);
+  config_set_include_dir(&cfg, "./testdata");
+
+  ok = config_read_file(&cfg, input_file);
+  if(!ok)
+  {
+    printf("error: %s:%d\n", config_error_text(&cfg),
+           config_error_line(&cfg));
+  }
+  TT_ASSERT_TRUE(ok);
+
+  remove("temp.cfg");
+  TT_ASSERT_TRUE(config_write_file(&cfg, "temp.cfg"));
+
+  TT_ASSERT_TXTFILE_EQ("temp.cfg", output_file);
+  remove("temp.cfg");
+
+  config_destroy(&cfg);
+}
+
+static void parse_file_and_compare_error(const char *input_file,
+                                         const char *parse_error)
+{
+  config_t cfg;
+  char actual_error[128];
+  char expected_error[128];
+
+  config_init(&cfg);
+  TT_ASSERT_FALSE(config_read_file(&cfg, input_file));
+
+  snprintf(expected_error, sizeof(expected_error), "%s:%s",
+           input_file, parse_error);
+
+  snprintf(actual_error, sizeof(actual_error), "%s:%d %s\n",
+           config_error_file(&cfg), config_error_line(&cfg),
+           config_error_text(&cfg));
+
+  config_destroy(&cfg);
+
+  TT_ASSERT_STR_EQ(actual_error, expected_error);
+}
+
+static void parse_string_and_compare_error(const char *input_text,
+                                           const char *parse_error)
+{
+  config_t cfg;
+  char actual_error[128];
+  char expected_error[128];
+
+  config_init(&cfg);
+  TT_ASSERT_FALSE(config_read_string(&cfg, input_text));
+
+  snprintf(expected_error, sizeof(expected_error), "(null):%s", parse_error);
+
+  snprintf(actual_error, sizeof(actual_error), "%s:%d %s\n",
+           config_error_file(&cfg), config_error_line(&cfg),
+           config_error_text(&cfg));
+
+  config_destroy(&cfg);
+
+  TT_ASSERT_STR_EQ(actual_error, expected_error);
+}
+
+static const char *read_file_to_string(const char *file)
+{
+  struct stat stbuf;
+  FILE *fp;
+  int size;
+  char *buf;
+  size_t r;
+
+  TT_ASSERT_INT_EQ(0, stat(file, &stbuf));
+
+  size = stbuf.st_size;
+  buf = (char *)malloc(size + 1);
+
+  fp = fopen(file, "rt");
+  TT_ASSERT_PTR_NOTNULL(fp);
+
+  r = fread(buf, 1, size, fp);
+  fclose(fp);
+
+  TT_ASSERT_INT_EQ(size, r);
+
+  *(buf + size) = 0;
+  return(buf);
+}
+
+/* ------------------------------------------------------------------------- */
+
+TT_TEST(ParsingAndFormatting)
+{
+  int i;
+
+  for(i = 0;; ++i)
+  {
+    char input_file[128], output_file[128];
+    sprintf(input_file, "testdata/input_%d.cfg", i);
+    sprintf(output_file, "testdata/output_%d.cfg", i);
+    printf("parsing %s\n", input_file);
+
+    if(!tt_file_exists(input_file) || !tt_file_exists(output_file))
+      break;
+
+    parse_and_compare(input_file, output_file);
+  }
+}
+
+/* ------------------------------------------------------------------------- */
+
+TT_TEST(ParseInvalidFiles)
+{
+  int i;
+
+  for(i = 0;; ++i)
+  {
+    char input_file[128], error_file[128];
+    char error_text[128];
+    FILE *fp;
+
+    sprintf(input_file, "testdata/bad_input_%d.cfg", i);
+    sprintf(error_file, "testdata/parse_error_%d.txt", i);
+
+    if(!tt_file_exists(input_file) || !tt_file_exists(error_file))
+      break;
+
+    fp = fopen(error_file, "rt");
+    TT_ASSERT_PTR_NOTNULL(fp);
+    TT_ASSERT_PTR_NOTNULL(fgets(error_text, sizeof(error_text), fp));
+    fclose(fp);
+
+    parse_file_and_compare_error(input_file, error_text);
+  }
+}
+
+/* ------------------------------------------------------------------------- */
+
+TT_TEST(ParseInvalidStrings)
+{
+  int i;
+
+  for(i = 0;; ++i)
+  {
+    char input_file[128], error_file[128];
+    const char *input_text;
+    char error_text[128];
+    FILE *fp;
+
+    sprintf(input_file, "testdata/bad_input_%d.cfg", i);
+    sprintf(error_file, "testdata/parse_error_%d.txt", i);
+
+    if(!tt_file_exists(input_file) || !tt_file_exists(error_file))
+      break;
+
+    input_text = read_file_to_string(input_file);
+
+    fp = fopen(error_file, "rt");
+    TT_ASSERT_PTR_NOTNULL(fp);
+    TT_ASSERT_PTR_NOTNULL(fgets(error_text, sizeof(error_text), fp));
+    fclose(fp);
+
+    parse_string_and_compare_error(input_text, error_text);
+
+    free((void *)input_text);
+  }
+}
+
+/* ------------------------------------------------------------------------- */
+
+int main(int argc, char **argv)
+{
+  TT_SUITE_START(LibConfigTests);
+  TT_SUITE_TEST(LibConfigTests, ParsingAndFormatting);
+  TT_SUITE_TEST(LibConfigTests, ParseInvalidFiles);
+  TT_SUITE_TEST(LibConfigTests, ParseInvalidStrings);
+  TT_SUITE_RUN(LibConfigTests);
+  TT_SUITE_END(LibConfigTests);
+
+  return(0);
+}