Add append_cell_to_circuit_queue() unit test

1 files changed, 130 insertions, 0 deletions

diff --git a/src/test/test_relay.c b/src/test/test_relay.c
new file mode 100644
index 0000000000..6b9cb33ca3
--- /dev/null
+++ b/src/test/test_relay.c
@@ -0,0 +1,130 @@
+/* Copyright (c) 2014, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#include "or.h"
+#define CIRCUITBUILD_PRIVATE
+#include "circuitbuild.h"
+#define RELAY_PRIVATE
+#include "relay.h"
+/* For init/free stuff */
+#include "scheduler.h"
+
+/* Test suite stuff */
+#include "test.h"
+#include "fakechans.h"
+
+static or_circuit_t * new_fake_orcirc(channel_t *nchan, channel_t *pchan);
+
+static void test_relay_append_cell_to_circuit_queue(void *arg);
+
+static or_circuit_t *
+new_fake_orcirc(channel_t *nchan, channel_t *pchan)
+{
+  or_circuit_t *orcirc = NULL;
+  circuit_t *circ = NULL;
+
+  orcirc = tor_malloc_zero(sizeof(*orcirc));
+  circ = &(orcirc->base_);
+  circ->magic = OR_CIRCUIT_MAGIC;
+
+  circ->n_chan = nchan;
+  circ->n_circ_id = get_unique_circ_id_by_chan(nchan);
+  circ->n_mux = NULL; /* ?? */
+  cell_queue_init(&(circ->n_chan_cells));
+  circ->n_hop = NULL;
+  circ->streams_blocked_on_n_chan = 0;
+  circ->streams_blocked_on_p_chan = 0;
+  circ->n_delete_pending = 0;
+  circ->p_delete_pending = 0;
+  circ->received_destroy = 0;
+  circ->state = CIRCUIT_STATE_OPEN;
+  circ->purpose = CIRCUIT_PURPOSE_OR;
+  circ->package_window = CIRCWINDOW_START_MAX;
+  circ->deliver_window = CIRCWINDOW_START_MAX;
+  circ->n_chan_create_cell = NULL;
+
+  orcirc->p_chan = pchan;
+  orcirc->p_circ_id = get_unique_circ_id_by_chan(pchan);
+  cell_queue_init(&(orcirc->p_chan_cells));
+
+  return orcirc;
+}
+
+static void
+test_relay_append_cell_to_circuit_queue(void *arg)
+{
+  channel_t *nchan = NULL, *pchan = NULL;
+  or_circuit_t *orcirc = NULL;
+  cell_t *cell = NULL;
+  int old_count, new_count;
+
+  (void)arg;
+
+  /* We'll need the cell pool for append_cell_to_circuit_queue() to work */
+  init_cell_pool();
+
+  /* Make fake channels to be nchan and pchan for the circuit */
+  nchan = new_fake_channel();
+  test_assert(nchan);
+
+  pchan = new_fake_channel();
+  test_assert(pchan);
+
+  /* We'll need chans with working cmuxes */
+  nchan->cmux = circuitmux_alloc();
+  pchan->cmux = circuitmux_alloc();
+
+  /* Make a fake orcirc */
+  orcirc = new_fake_orcirc(nchan, pchan);
+  test_assert(orcirc);
+
+  /* Make a cell */
+  cell = tor_malloc_zero(sizeof(cell_t));
+  make_fake_cell(cell);
+
+  MOCK(scheduler_channel_has_waiting_cells,
+       scheduler_channel_has_waiting_cells_mock);
+
+  /* Append it */
+  old_count = get_mock_scheduler_has_waiting_cells_count();
+  append_cell_to_circuit_queue(TO_CIRCUIT(orcirc), nchan, cell,
+                               CELL_DIRECTION_OUT, 0);
+  new_count = get_mock_scheduler_has_waiting_cells_count();
+  test_eq(new_count, old_count + 1);
+
+  /* Now try the reverse direction */
+  old_count = get_mock_scheduler_has_waiting_cells_count();
+  append_cell_to_circuit_queue(TO_CIRCUIT(orcirc), pchan, cell,
+                               CELL_DIRECTION_IN, 0);
+  new_count = get_mock_scheduler_has_waiting_cells_count();
+  test_eq(new_count, old_count + 1);
+
+  UNMOCK(scheduler_channel_has_waiting_cells);
+
+  /* Get rid of the fake channels */
+  MOCK(scheduler_release_channel, scheduler_release_channel_mock);
+  channel_mark_for_close(nchan);
+  channel_mark_for_close(pchan);
+  UNMOCK(scheduler_release_channel);
+
+  /* Shut down channels */
+  channel_free_all();
+  nchan = pchan = NULL;
+
+ done:
+  tor_free(orcirc);
+  if (nchan && nchan->cmux) circuitmux_free(nchan->cmux);
+  tor_free(nchan);
+  if (pchan && pchan->cmux) circuitmux_free(pchan->cmux);
+  tor_free(pchan);
+  free_cell_pool();
+
+  return;
+}
+
+struct testcase_t relay_tests[] = {
+  { "append_cell_to_circuit_queue", test_relay_append_cell_to_circuit_queue,
+    TT_FORK, NULL, NULL },
+  END_OF_TESTCASES
+};
+