add groonga api sample.

test/unit/Makefile.am

@@ -1,4 +1,4 @@
-noinst_LTLIBRARIES = test_start_stop.la test_driver.la
+noinst_LTLIBRARIES = test_start_stop.la test_driver.la api_sample.la
 
 AM_CPPFLAGS = $(GROONGA_INCLUDES) $(MECAB_INCLUDES) $(CUTTER_CFLAGS) $(GCUTTER_CFLAGS)
 AM_INCLUDES = -l. -l..
@@ -14,3 +14,4 @@ DRIVER_SRC = ../../driver.c
 
 test_start_stop_la_SOURCES = $(DRIVER_SRC) test-start-stop.c
 test_driver_la_SOURCES = $(DRIVER_SRC) test-driver.c
+api_sample_la_SOURCES = api-sample.c

test/unit/api-sample.c

@@ -0,0 +1,22 @@
+#include <gcutter.h>
+#include <glib/gstdio.h>
+#include <groonga.h>
+
+static gchar *base_directory;
+static gchar *tmp_directory;
+static grn_ctx *ctx;
+
+void cut_startup()
+{
+  base_directory = g_get_current_dir();
+  tmp_directory = g_build_filename(base_directory, "/tmp", NULL);
+  cut_remove_path(tmp_directory, NULL);
+  g_mkdir_with_parents(tmp_directory, 0700);
+  g_chdir(tmp_directory);
+}
+
+void cut_shutdown()
+{
+  g_chdir(base_directory);
+  g_free(tmp_directory);
+}