Initial test_scheduler.c

1 files changed, 141 insertions, 0 deletions

diff --git a/src/test/test_scheduler.c b/src/test/test_scheduler.c
new file mode 100644
index 0000000000..e8bceeb2d4
--- /dev/null
+++ b/src/test/test_scheduler.c
@@ -0,0 +1,141 @@
+/* Copyright (c) 2014, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#include <math.h>
+
+#include "orconfig.h"
+
+/* Libevent stuff */
+#ifdef HAVE_EVENT2_EVENT_H
+#include <event2/event.h>
+#else
+#include <event.h>
+#endif
+
+#define TOR_CHANNEL_INTERNAL_
+#include "or.h"
+#include "compat_libevent.h"
+#include "scheduler.h"
+
+/* Test suite stuff */
+#include "test.h"
+
+/* Statics in scheduler.c exposed to the test suite */
+extern smartlist_t *channels_pending;
+extern struct event *run_sched_ev;
+extern uint64_t queue_heuristic;
+extern time_t queue_heuristic_timestamp;
+
+/* Event base for scheduelr tests */
+static struct event_base *mock_event_base = NULL;
+
+/* Setup for mock event stuff */
+static void mock_event_free_all(void);
+static void mock_event_init(void);
+
+/* Mocks used by scheduler tests */
+static struct event_base * tor_libevent_get_base_mock(void);
+
+/* Scheduler test cases */
+static void test_scheduler_initfree(void *arg);
+
+/* Mock event init/free */
+
+/* Shamelessly stolen from compat_libevent.c */
+#define V(major, minor, patch) \
+  (((major) << 24) | ((minor) << 16) | ((patch) << 8))
+
+static void
+mock_event_free_all(void)
+{
+  test_assert(mock_event_base != NULL);
+
+  if (mock_event_base) {
+    event_base_free(mock_event_base);
+    mock_event_base = NULL;
+  }
+
+  test_eq(mock_event_base, NULL);
+
+ done:
+  return;
+}
+
+static void
+mock_event_init(void)
+{
+#ifdef HAVE_EVENT2_EVENT_H
+  struct event_config *cfg = NULL;
+#endif
+
+  test_eq(mock_event_base, NULL);
+
+  /*
+   * Really cut down from tor_libevent_initialize of
+   * src/common/compat_libevent.c to kill config dependencies
+   */
+
+  if (!mock_event_base) {
+#ifdef HAVE_EVENT2_EVENT_H
+    cfg = event_config_new();
+#if LIBEVENT_VERSION_NUMBER >= V(2,0,9)
+    /* We can enable changelist support with epoll, since we don't give
+     * Libevent any dup'd fds.  This lets us avoid some syscalls. */
+    event_config_set_flag(cfg, EVENT_BASE_FLAG_EPOLL_USE_CHANGELIST);
+#endif
+    mock_event_base = event_base_new_with_config(cfg);
+    event_config_free(cfg);
+#else
+    mock_event_base = event_init();
+#endif
+  }
+
+  test_assert(mock_event_base != NULL);
+
+ done:
+  return;
+}
+
+/* Mocks */
+
+static struct event_base *
+tor_libevent_get_base_mock(void)
+{
+  return mock_event_base;
+}
+
+/* Test cases */
+
+static void
+test_scheduler_initfree(void *arg)
+{
+  (void)arg;
+
+  test_eq(channels_pending, NULL);
+  test_eq(run_sched_ev, NULL);
+
+  mock_event_init();
+  MOCK(tor_libevent_get_base, tor_libevent_get_base_mock);
+
+  scheduler_init();
+
+  test_assert(channels_pending != NULL);
+  test_assert(run_sched_ev != NULL);
+
+  scheduler_free_all();
+
+  UNMOCK(tor_libevent_get_base);
+  mock_event_free_all();
+
+  test_eq(channels_pending, NULL);
+  test_eq(run_sched_ev, NULL);
+
+ done:
+  return;
+}
+
+struct testcase_t scheduler_tests[] = {
+  { "initfree", test_scheduler_initfree, TT_FORK, NULL, NULL },
+  END_OF_TESTCASES
+};
+