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/* Copyright (c) 2013-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#define TOR_CHANNEL_INTERNAL_
#define CIRCUITMUX_PRIVATE
#define CIRCUITMUX_EWMA_PRIVATE
#define RELAY_PRIVATE
#include "core/or/or.h"
#include "core/or/channel.h"
#include "core/or/circuitmux.h"
#include "core/or/circuitmux_ewma.h"
#include "core/or/relay.h"
#include "core/or/scheduler.h"
#include "test/test.h"
#include "core/or/destroy_cell_queue_st.h"
#include <math.h>
/* XXXX duplicated function from test_circuitlist.c */
static channel_t *
new_fake_channel(void)
{
channel_t *chan = tor_malloc_zero(sizeof(channel_t));
channel_init(chan);
return chan;
}
static int
has_queued_writes(channel_t *c)
{
(void) c;
return 1;
}
/** Test destroy cell queue with no interference from other queues. */
static void
test_cmux_destroy_cell_queue(void *arg)
{
circuitmux_t *cmux = NULL;
channel_t *ch = NULL;
circuit_t *circ = NULL;
destroy_cell_queue_t *cq = NULL;
packed_cell_t *pc = NULL;
destroy_cell_t *dc = NULL;
scheduler_init();
(void) arg;
cmux = circuitmux_alloc();
tt_assert(cmux);
ch = new_fake_channel();
circuitmux_set_policy(cmux, &ewma_policy);
ch->has_queued_writes = has_queued_writes;
ch->wide_circ_ids = 1;
circ = circuitmux_get_first_active_circuit(cmux, &cq);
tt_ptr_op(circ, OP_EQ, NULL);
tt_ptr_op(cq, OP_EQ, NULL);
circuitmux_append_destroy_cell(ch, cmux, 100, 10);
circuitmux_append_destroy_cell(ch, cmux, 190, 6);
circuitmux_append_destroy_cell(ch, cmux, 30, 1);
tt_int_op(circuitmux_num_cells(cmux), OP_EQ, 3);
circ = circuitmux_get_first_active_circuit(cmux, &cq);
tt_ptr_op(circ, OP_EQ, NULL);
tt_assert(cq);
tt_int_op(cq->n, OP_EQ, 3);
dc = destroy_cell_queue_pop(cq);
tt_assert(dc);
tt_uint_op(dc->circid, OP_EQ, 100);
tt_int_op(circuitmux_num_cells(cmux), OP_EQ, 2);
done:
circuitmux_free(cmux);
channel_free(ch);
packed_cell_free(pc);
tor_free(dc);
}
static void
test_cmux_compute_ticks(void *arg)
{
const int64_t NS_PER_S = 1000 * 1000 * 1000;
const int64_t START_NS = UINT64_C(1217709000)*NS_PER_S;
int64_t now;
double rem;
unsigned tick;
(void)arg;
circuitmux_ewma_free_all();
monotime_enable_test_mocking();
monotime_coarse_set_mock_time_nsec(START_NS);
cell_ewma_initialize_ticks();
const unsigned tick_zero = cell_ewma_get_current_tick_and_fraction(&rem);
tt_double_op(rem, OP_GT, -1e-9);
tt_double_op(rem, OP_LT, 1e-9);
/* 1.5 second later and we should still be in the same tick. */
now = START_NS + NS_PER_S + NS_PER_S/2;
monotime_coarse_set_mock_time_nsec(now);
tick = cell_ewma_get_current_tick_and_fraction(&rem);
tt_uint_op(tick, OP_EQ, tick_zero);
#ifdef USING_32BIT_MSEC_HACK
const double tolerance = .0005;
#else
const double tolerance = .00000001;
#endif
tt_double_op(fabs(rem - .15), OP_LT, tolerance);
/* 25 second later and we should be in another tick. */
now = START_NS + NS_PER_S * 25;
monotime_coarse_set_mock_time_nsec(now);
tick = cell_ewma_get_current_tick_and_fraction(&rem);
tt_uint_op(tick, OP_EQ, tick_zero + 2);
tt_double_op(fabs(rem - .5), OP_LT, tolerance);
done:
;
}
struct testcase_t circuitmux_tests[] = {
{ "destroy_cell_queue", test_cmux_destroy_cell_queue, TT_FORK, NULL, NULL },
{ "compute_ticks", test_cmux_compute_ticks, TT_FORK, NULL, NULL },
END_OF_TESTCASES
};
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