test/core/channel/channel_stack_test.c

/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "src/core/channel/channel_stack.h"

#include <string.h>

#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>

#include "test/core/util/test_config.h"

static void
channel_init_func (grpc_exec_ctx * exec_ctx, grpc_channel_element * elem, grpc_channel * master, const grpc_channel_args * args, grpc_mdctx * metadata_context, int is_first, int is_last)
{
  GPR_ASSERT (args->num_args == 1);
  GPR_ASSERT (args->args[0].type == GRPC_ARG_INTEGER);
  GPR_ASSERT (0 == strcmp (args->args[0].key, "test_key"));
  GPR_ASSERT (args->args[0].value.integer == 42);
  GPR_ASSERT (is_first);
  GPR_ASSERT (is_last);
  *(int *) (elem->channel_data) = 0;
}

static void
call_init_func (grpc_exec_ctx * exec_ctx, grpc_call_element * elem, const void *server_transport_data, grpc_transport_stream_op * initial_op)
{
  ++*(int *) (elem->channel_data);
  *(int *) (elem->call_data) = 0;
}

static void
channel_destroy_func (grpc_exec_ctx * exec_ctx, grpc_channel_element * elem)
{
}

static void
call_destroy_func (grpc_exec_ctx * exec_ctx, grpc_call_element * elem)
{
  ++*(int *) (elem->channel_data);
}

static void
call_func (grpc_exec_ctx * exec_ctx, grpc_call_element * elem, grpc_transport_stream_op * op)
{
  ++*(int *) (elem->call_data);
}

static void
channel_func (grpc_exec_ctx * exec_ctx, grpc_channel_element * elem, grpc_transport_op * op)
{
  ++*(int *) (elem->channel_data);
}

static char *
get_peer (grpc_exec_ctx * exec_ctx, grpc_call_element * elem)
{
  return gpr_strdup ("peer");
}

static void
test_create_channel_stack (void)
{
  const grpc_channel_filter filter = { call_func, channel_func,
    sizeof (int), call_init_func,
    call_destroy_func, sizeof (int),
    channel_init_func, channel_destroy_func,
    get_peer, "some_test_filter"
  };
  const grpc_channel_filter *filters = &filter;
  grpc_channel_stack *channel_stack;
  grpc_call_stack *call_stack;
  grpc_channel_element *channel_elem;
  grpc_call_element *call_elem;
  grpc_arg arg;
  grpc_channel_args chan_args;
  grpc_mdctx *metadata_context;
  int *channel_data;
  int *call_data;
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;

  metadata_context = grpc_mdctx_create ();

  arg.type = GRPC_ARG_INTEGER;
  arg.key = "test_key";
  arg.value.integer = 42;

  chan_args.num_args = 1;
  chan_args.args = &arg;

  channel_stack = gpr_malloc (grpc_channel_stack_size (&filters, 1));
  grpc_channel_stack_init (&filters, 1, NULL, &chan_args, metadata_context, channel_stack, &closure_list);
  GPR_ASSERT (channel_stack->count == 1);
  channel_elem = grpc_channel_stack_element (channel_stack, 0);
  channel_data = (int *) channel_elem->channel_data;
  GPR_ASSERT (*channel_data == 0);

  call_stack = gpr_malloc (channel_stack->call_stack_size);
  grpc_call_stack_init (channel_stack, NULL, NULL, call_stack, &closure_list);
  GPR_ASSERT (call_stack->count == 1);
  call_elem = grpc_call_stack_element (call_stack, 0);
  GPR_ASSERT (call_elem->filter == channel_elem->filter);
  GPR_ASSERT (call_elem->channel_data == channel_elem->channel_data);
  call_data = (int *) call_elem->call_data;
  GPR_ASSERT (*call_data == 0);
  GPR_ASSERT (*channel_data == 1);

  grpc_call_stack_destroy (call_stack, &closure_list);
  gpr_free (call_stack);
  GPR_ASSERT (*channel_data == 2);

  grpc_channel_stack_destroy (channel_stack, &closure_list);
  gpr_free (channel_stack);

  grpc_mdctx_unref (metadata_context);

  GPR_ASSERT (grpc_closure_list_empty (closure_list));
}

int
main (int argc, char **argv)
{
  grpc_test_init (argc, argv);
  test_create_channel_stack ();
  return 0;
}