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synced 2024-11-28 06:13:31 +01:00
test: Improve the inbound channel cell test
First, that test was broken from the previous commit because the channel_queue_cell() has been removed. This now tests the channel_process_cell() directly. Second, it wasn't testing much except if the channel subsystem actually went through the cell handler. This commit adds more checks on the state of a channel going from open, receiving a cell and closing. Third, this and the id_map unit test are working, not the others so they've been marked as not working and future commit will improve and fix those. Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
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1dc4f96d9c
commit
636eec32bf
@ -33,16 +33,14 @@ static double test_overhead_estimate = 1.0;
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static int test_releases_count = 0;
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static channel_t *dump_statistics_mock_target = NULL;
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static int dump_statistics_mock_matches = 0;
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static int test_close_called = 0;
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static void chan_test_channel_dump_statistics_mock(
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channel_t *chan, int severity);
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static void chan_test_cell_handler(channel_t *ch,
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cell_t *cell);
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static const char * chan_test_describe_transport(channel_t *ch);
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static void chan_test_dumpstats(channel_t *ch, int severity);
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static void chan_test_var_cell_handler(channel_t *ch,
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var_cell_t *var_cell);
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static void chan_test_close(channel_t *ch);
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static void chan_test_error(channel_t *ch);
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static void chan_test_finish_close(channel_t *ch);
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static const char * chan_test_get_remote_descr(channel_t *ch, int flags);
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@ -56,7 +54,6 @@ static int chan_test_write_var_cell(channel_t *ch, var_cell_t *var_cell);
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static void scheduler_channel_doesnt_want_writes_mock(channel_t *ch);
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static void test_channel_dumpstats(void *arg);
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static void test_channel_incoming(void *arg);
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static void test_channel_lifecycle(void *arg);
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static const char *
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@ -93,10 +90,9 @@ chan_test_channel_dump_statistics_mock(channel_t *chan, int severity)
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*/
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static void
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chan_test_cell_handler(channel_t *ch,
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cell_t *cell)
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chan_test_cell_handler(channel_t *chan, cell_t *cell)
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{
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tt_assert(ch);
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tt_assert(chan);
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tt_assert(cell);
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test_chan_last_seen_fixed_cell_ptr = cell;
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@ -146,6 +142,8 @@ chan_test_close(channel_t *ch)
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{
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tt_assert(ch);
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++test_close_called;
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done:
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return;
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}
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@ -348,6 +346,8 @@ new_fake_channel(void)
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chan->write_var_cell = chan_test_write_var_cell;
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chan->state = CHANNEL_STATE_OPEN;
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chan->cmux = circuitmux_alloc();
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return chan;
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}
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@ -516,6 +516,7 @@ test_channel_dumpstats(void *arg)
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chan_test_var_cell_handler);
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p_cell = packed_cell_new();
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old_count = test_chan_fixed_cells_recved;
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channel_write_packed_cell(ch, p_cell);
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tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count + 1);
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tt_assert(ch->n_bytes_recved > 0);
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tt_assert(ch->n_cells_recved > 0);
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@ -545,82 +546,93 @@ test_channel_dumpstats(void *arg)
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return;
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}
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/* Test inbound cell. The callstack is:
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* channel_process_cell()
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* -> chan->cell_handler()
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*
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* This test is about checking if we can process an inbound cell down to the
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* channel handler. */
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static void
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test_channel_incoming(void *arg)
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test_channel_inbound_cell(void *arg)
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{
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channel_t *ch = NULL;
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channel_t *chan = NULL;
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cell_t *cell = NULL;
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var_cell_t *var_cell = NULL;
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int old_count;
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(void)arg;
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(void) arg;
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/* Mock these for duration of the test */
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MOCK(scheduler_channel_doesnt_want_writes,
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scheduler_channel_doesnt_want_writes_mock);
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MOCK(scheduler_release_channel,
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scheduler_release_channel_mock);
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/* The channel will be freed so we need to hijack this so the scheduler
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* doesn't get confused. */
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MOCK(scheduler_release_channel, scheduler_release_channel_mock);
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/* Accept cells to lower layer */
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test_chan_accept_cells = 1;
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/* Use default overhead factor */
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test_overhead_estimate = 1.0;
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ch = new_fake_channel();
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tt_assert(ch);
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chan = new_fake_channel();
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tt_assert(chan);
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/* Start it off in OPENING */
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ch->state = CHANNEL_STATE_OPENING;
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/* We'll need a cmux */
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ch->cmux = circuitmux_alloc();
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/* Install incoming cell handlers */
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channel_set_cell_handlers(ch,
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chan_test_cell_handler,
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chan_test_var_cell_handler);
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/* Test cell handler getters */
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tt_ptr_op(channel_get_cell_handler(ch), OP_EQ, chan_test_cell_handler);
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tt_ptr_op(channel_get_var_cell_handler(ch), OP_EQ,
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chan_test_var_cell_handler);
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chan->state = CHANNEL_STATE_OPENING;
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/* Try to register it */
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channel_register(ch);
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tt_assert(ch->registered);
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channel_register(chan);
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tt_int_op(chan->registered, OP_EQ, 1);
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/* Open it */
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channel_change_state_open(ch);
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tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_OPEN);
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channel_change_state_open(chan);
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tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_OPEN);
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tt_int_op(chan->has_been_open, OP_EQ, 1);
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/* Receive a fixed cell */
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cell = tor_malloc_zero(sizeof(cell_t));
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/* Receive a cell now. */
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cell = tor_malloc_zero(sizeof(*cell));
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make_fake_cell(cell);
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old_count = test_chan_fixed_cells_recved;
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tor_free(cell);
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tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count + 1);
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channel_process_cell(chan, cell);
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tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count);
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tt_u64_op(chan->timestamp_xfer_ms, OP_EQ, 0);
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tt_u64_op(chan->timestamp_active, OP_EQ, 0);
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tt_u64_op(chan->timestamp_recv, OP_EQ, 0);
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/* Receive a variable-size cell */
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var_cell = tor_malloc_zero(sizeof(var_cell_t) + CELL_PAYLOAD_SIZE);
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make_fake_var_cell(var_cell);
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old_count = test_chan_var_cells_recved;
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tor_free(cell);
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tt_int_op(test_chan_var_cells_recved, OP_EQ, old_count + 1);
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/* Setup incoming cell handlers. We don't care about var cell, the channel
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* layers is not handling those. */
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channel_set_cell_handlers(chan, chan_test_cell_handler, NULL);
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tt_ptr_op(chan->cell_handler, OP_EQ, chan_test_cell_handler);
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/* Now process the cell, we should see it. */
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old_count = test_chan_fixed_cells_recved;
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channel_process_cell(chan, cell);
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tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count + 1);
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/* We should have a series of timestamp set. */
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tt_u64_op(chan->timestamp_xfer_ms, OP_NE, 0);
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tt_u64_op(chan->timestamp_active, OP_NE, 0);
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tt_u64_op(chan->timestamp_recv, OP_NE, 0);
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tt_u64_op(chan->next_padding_time_ms, OP_EQ, 0);
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tt_u64_op(chan->n_cells_recved, OP_EQ, 1);
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tt_u64_op(chan->n_bytes_recved, OP_EQ, get_cell_network_size(0));
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/* Close it */
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channel_mark_for_close(ch);
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tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING);
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chan_test_finish_close(ch);
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tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED);
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old_count = test_close_called;
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channel_mark_for_close(chan);
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tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_CLOSING);
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tt_int_op(chan->reason_for_closing, OP_EQ, CHANNEL_CLOSE_REQUESTED);
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tt_int_op(test_close_called, OP_EQ, old_count + 1);
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/* This closes the channe so it calls in the scheduler, make sure of it. */
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old_count = test_releases_count;
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chan_test_finish_close(chan);
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tt_int_op(test_releases_count, OP_EQ, old_count + 1);
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tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_CLOSED);
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/* The channel will be free, lets make sure it is not accessible. */
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uint64_t chan_id = chan->global_identifier;
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tt_ptr_op(channel_find_by_global_id(chan_id), OP_EQ, chan);
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channel_run_cleanup();
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ch = NULL;
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chan = channel_find_by_global_id(chan_id);
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tt_assert(chan == NULL);
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done:
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free_fake_channel(ch);
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tor_free(cell);
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tor_free(var_cell);
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UNMOCK(scheduler_channel_doesnt_want_writes);
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UNMOCK(scheduler_release_channel);
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return;
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}
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/**
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@ -1002,11 +1014,18 @@ test_channel_id_map(void *arg)
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}
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struct testcase_t channel_tests[] = {
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{ "dumpstats", test_channel_dumpstats, TT_FORK, NULL, NULL },
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{ "incoming", test_channel_incoming, TT_FORK, NULL, NULL },
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{ "lifecycle", test_channel_lifecycle, TT_FORK, NULL, NULL },
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{ "lifecycle_2", test_channel_lifecycle_2, TT_FORK, NULL, NULL },
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{ "id_map", test_channel_id_map, TT_FORK, NULL, NULL },
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{ "inbound_cell", test_channel_inbound_cell, TT_FORK,
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NULL, NULL },
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{ "id_map", test_channel_id_map, TT_FORK,
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NULL, NULL },
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/* NOT WORKING TEST. */
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{ "dumpstats", test_channel_dumpstats, TT_FORK,
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NULL, NULL },
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{ "lifecycle", test_channel_lifecycle, TT_FORK,
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NULL, NULL },
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{ "lifecycle_2", test_channel_lifecycle_2, TT_FORK,
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NULL, NULL },
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END_OF_TESTCASES
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};
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