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Unit test for unusual channel lifecycles

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This commit is contained in:
Andrea Shepard 2014-01-21 22:20:59 -08:00
parent b6d0aaec07
commit 3b78667d65
1 changed files with 204 additions and 0 deletions
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204
src/test/test_channel.c
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@ -7,6 +7,7 @@
#include "channel.h"
/* For channel_note_destroy_not_pending */
#include "circuitlist.h"
#include "circuitmux.h"
/* For var_cell_free */
#include "connection_or.h"
/* For packed_cell stuff */
@ -30,6 +31,8 @@ static int test_releases_count = 0;
static void channel_note_destroy_not_pending_mock(channel_t *ch,
circid_t circid);
static void chan_test_close(channel_t *ch);
static void chan_test_error(channel_t *ch);
static void chan_test_finish_close(channel_t *ch);
static size_t chan_test_num_bytes_queued(channel_t *ch);
static int chan_test_num_cells_writeable(channel_t *ch);
static int chan_test_write_cell(channel_t *ch, cell_t *cell);
@ -63,6 +66,40 @@ chan_test_close(channel_t *ch)
return;
}
/*
* Close a channel through the error path
*/
static void
chan_test_error(channel_t *ch)
{
test_assert(ch);
test_assert(!(ch->state == CHANNEL_STATE_CLOSING ||
ch->state == CHANNEL_STATE_ERROR ||
ch->state == CHANNEL_STATE_CLOSED));
channel_close_for_error(ch);
done:
return;
}
/*
* Finish closing a channel from CHANNEL_STATE_CLOSING
*/
static void
chan_test_finish_close(channel_t *ch)
{
test_assert(ch);
test_assert(ch->state == CHANNEL_STATE_CLOSING);
channel_closed(ch);
done:
return;
}
static double
chan_test_get_overhead_estimate(channel_t *ch)
{
@ -328,6 +365,12 @@ test_channel_flush(void *arg)
return;
}
/**
* Normal channel lifecycle test:
*
* OPENING->OPEN->MAINT->OPEN->CLOSING->CLOSED
*/
static void
test_channel_lifecycle(void *arg)
{
@ -426,6 +469,166 @@ test_channel_lifecycle(void *arg)
return;
}
/**
* Weird channel lifecycle test:
*
* OPENING->CLOSING->CLOSED
* OPENING->OPEN->CLOSING->ERROR
* OPENING->OPEN->MAINT->CLOSING->CLOSED
* OPENING->OPEN->MAINT->CLOSING->ERROR
*/
static void
test_channel_lifecycle_2(void *arg)
{
channel_t *ch = NULL;
(void)arg;
/* Mock these for the whole lifecycle test */
MOCK(scheduler_channel_doesnt_want_writes,
scheduler_channel_doesnt_want_writes_mock);
MOCK(scheduler_release_channel,
scheduler_release_channel_mock);
/* Accept cells to lower layer */
test_chan_accept_cells = 1;
/* Use default overhead factor */
test_overhead_estimate = 1.0f;
ch = new_fake_channel();
test_assert(ch);
/* Start it off in OPENING */
ch->state = CHANNEL_STATE_OPENING;
/* The full lifecycle test needs a cmux */
ch->cmux = circuitmux_alloc();
/* Try to register it */
channel_register(ch);
test_assert(ch->registered);
/* Try to close it */
channel_mark_for_close(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSING);
/* Finish closing it */
chan_test_finish_close(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSED);
channel_run_cleanup();
ch = NULL;
/* Now try OPENING->OPEN->CLOSING->ERROR */
ch = new_fake_channel();
test_assert(ch);
ch->state = CHANNEL_STATE_OPENING;
ch->cmux = circuitmux_alloc();
channel_register(ch);
test_assert(ch->registered);
/* Finish opening it */
channel_change_state(ch, CHANNEL_STATE_OPEN);
/* Error exit from lower layer */
chan_test_error(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSING);
chan_test_finish_close(ch);
test_eq(ch->state, CHANNEL_STATE_ERROR);
channel_run_cleanup();
ch = NULL;
/* OPENING->OPEN->MAINT->CLOSING->CLOSED close from maintenance state */
ch = new_fake_channel();
test_assert(ch);
ch->state = CHANNEL_STATE_OPENING;
ch->cmux = circuitmux_alloc();
channel_register(ch);
test_assert(ch->registered);
/* Finish opening it */
channel_change_state(ch, CHANNEL_STATE_OPEN);
test_eq(ch->state, CHANNEL_STATE_OPEN);
/* Go to maintenance state */
channel_change_state(ch, CHANNEL_STATE_MAINT);
test_eq(ch->state, CHANNEL_STATE_MAINT);
/* Lower layer close */
channel_mark_for_close(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSING);
/* Finish */
chan_test_finish_close(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSED);
channel_run_cleanup();
ch = NULL;
/*
* OPENING->OPEN->MAINT->CLOSING->CLOSED lower-layer close during
* maintenance state
*/
ch = new_fake_channel();
test_assert(ch);
ch->state = CHANNEL_STATE_OPENING;
ch->cmux = circuitmux_alloc();
channel_register(ch);
test_assert(ch->registered);
/* Finish opening it */
channel_change_state(ch, CHANNEL_STATE_OPEN);
test_eq(ch->state, CHANNEL_STATE_OPEN);
/* Go to maintenance state */
channel_change_state(ch, CHANNEL_STATE_MAINT);
test_eq(ch->state, CHANNEL_STATE_MAINT);
/* Lower layer close */
channel_close_from_lower_layer(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSING);
/* Finish */
chan_test_finish_close(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSED);
channel_run_cleanup();
ch = NULL;
/* OPENING->OPEN->MAINT->CLOSING->ERROR */
ch = new_fake_channel();
test_assert(ch);
ch->state = CHANNEL_STATE_OPENING;
ch->cmux = circuitmux_alloc();
channel_register(ch);
test_assert(ch->registered);
/* Finish opening it */
channel_change_state(ch, CHANNEL_STATE_OPEN);
test_eq(ch->state, CHANNEL_STATE_OPEN);
/* Go to maintenance state */
channel_change_state(ch, CHANNEL_STATE_MAINT);
test_eq(ch->state, CHANNEL_STATE_MAINT);
/* Lower layer close */
chan_test_error(ch);
test_eq(ch->state, CHANNEL_STATE_CLOSING);
/* Finish */
chan_test_finish_close(ch);
test_eq(ch->state, CHANNEL_STATE_ERROR);
channel_run_cleanup();
ch = NULL;
/* Shut down channels */
channel_free_all();
done:
tor_free(ch);
UNMOCK(scheduler_channel_doesnt_want_writes);
UNMOCK(scheduler_release_channel);
return;
}
static void
test_channel_multi(void *arg)
{
@ -924,6 +1127,7 @@ test_channel_write(void *arg)
struct testcase_t channel_tests[] = {
{ "flush", test_channel_flush, TT_FORK, NULL, NULL },
{ "lifecycle", test_channel_lifecycle, TT_FORK, NULL, NULL },
{ "lifecycle_2", test_channel_lifecycle_2, TT_FORK, NULL, NULL },
{ "multi", test_channel_multi, TT_FORK, NULL, NULL },
{ "queue_impossible", test_channel_queue_impossible, TT_FORK, NULL, NULL },
{ "queue_size", test_channel_queue_size, TT_FORK, NULL, NULL },