WIP C-based test

unittest/sql/CMakeLists.txt

@@ -34,3 +34,7 @@ MY_ADD_TEST(mf_iocache)
 ADD_EXECUTABLE(my_json_writer-t my_json_writer-t.cc dummy_builtins.cc)
 TARGET_LINK_LIBRARIES(my_json_writer-t sql mytap)
 MY_ADD_TEST(my_json_writer)
+
+ADD_EXECUTABLE(mysql_opt_bind-t mysql_opt_bind-t.c dummy_builtins.cc)
+TARGET_LINK_LIBRARIES(mysql_opt_bind-t sql mytap)
+MY_ADD_TEST(mysql_opt_bind)

unittest/sql/mysql_opt_bind-t.c

@@ -0,0 +1,71 @@
+//TODO license headr
+#include <stdbool.h>
+#include <tap.h>
+#include <mysql.h>
+
+int main()
+{
+  static const bool ARG_TRUE= true;
+  static const char QUERY[]= "SELECT SUBSTRING_INDEX(USER(), '@', -1)";
+
+  const char *const port_string= getenv("MASTER_MYPORT");
+  const unsigned int port=
+    port_string? (unsigned int)strtoul(port, NULL, 10) : 0;
+
+  //TODO classes allow explicit case handling
+  const char *bind_addresses[][2] = {
+  { "127.0.0.1", /* Cloudflare DNS */ "1.0.0.1" },
+  { "localhost", "example.com" },
+  //TODO IPv6
+};
+  int count= sizeof(bind_addresses) / sizeof(const char *);
+
+  plan(count);
+  for (size_t i= 0; i < count; ++i)
+  {
+    const char *bind_address= bind_addresses[i];
+    MYSQL connection;
+    MYSQL_RES *results;
+    bool success= false;
+
+    // need init thread.  mysql_thread_init(); mysql_thread_end();
+    if (!mysql_init(&connection))
+    {
+      diag("failed to initialize connection");
+      goto end;
+    }
+
+    if (mysql_options(&connection, MYSQL_OPT_BIND, bind_address))
+    {
+      diag("MYSQL_OPT_BIND not accepted");
+      goto close;
+    }
+    mysql_options(&connection, MYSQL_OPT_RECONNECT, &ARG_TRUE);
+
+    if (!mysql_real_connect(&connection,
+      NULL, // server address
+      NULL, // user
+      NULL, // password
+      NULL, // database
+      port,
+      NULL, // socket
+      0x0 // flags
+    ))
+    {
+      if (/* TODO test fails from invalid addresses */ false)
+        success= true;
+      else
+        diag("failed to connect to the server");
+      goto close;
+    }
+
+    // TODO query
+
+  close:
+    mysql_close(&connection);
+  end:
+    ok(success, bind_address);
+  }
+  test_case();
+  return exit_status();
+}