Adding upstream version 0.16.1.upstream/0.16.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 1577 insertions, 0 deletions

diff --git a/tests/test_tevent_tag.c b/tests/test_tevent_tag.c
new file mode 100644
index 0000000..2ae0e38
--- /dev/null
+++ b/tests/test_tevent_tag.c
@@ -0,0 +1,253 @@
+/*
+ * Unix SMB/CIFS implementation.
+ *
+ * testing of some tevent_req aspects
+ *
+ * Copyright (C) Pavel Březina <pbrezina@redhat.com> 2021
+ *
+ *   ** NOTE! The following LGPL license applies to the tevent
+ *   ** library. This does NOT imply that all of Samba is released
+ *   ** under the LGPL
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <signal.h>
+
+#include <talloc.h>
+#include <tevent.h>
+#include <cmocka.h>
+
+static void queue_trigger(struct tevent_req *req, void *private_data)
+{
+	/* Dummy handler. Just return. */
+	return;
+}
+
+static void fd_handler(struct tevent_context *ev,
+		       struct tevent_fd *fde,
+		       uint16_t flags,
+		       void *private_data)
+{
+	/* Dummy handler. Just return. */
+	return;
+}
+
+static void timer_handler(struct tevent_context *ev,
+			  struct tevent_timer *te,
+			  struct timeval current_time,
+			  void *private_data)
+{
+	/* Dummy handler. Just return. */
+	return;
+}
+
+static void signal_handler(struct tevent_context *ev,
+			   struct tevent_signal *se,
+			   int signum,
+			   int count,
+			   void *siginfo,
+			   void *private_data)
+{
+	/* Dummy handler. Just return. */
+	return;
+}
+
+static void immediate_handler(struct tevent_context *ctx,
+			      struct tevent_immediate *im,
+			      void *private_data)
+{
+	/* Dummy handler. Just return. */
+	return;
+}
+
+static int test_setup(void **state)
+{
+	struct tevent_context *ev;
+
+	ev = tevent_context_init(NULL);
+	assert_non_null(ev);
+
+	*state = ev;
+	return 0;
+}
+
+static int test_teardown(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	talloc_free(ev);
+	return 0;
+}
+
+static void test_fd_tag(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	struct tevent_fd *fde;
+	uint64_t tag;
+
+	fde = tevent_add_fd(ev, ev, 0, TEVENT_FD_READ, fd_handler, NULL);
+	assert_non_null(fde);
+
+	tag = tevent_fd_get_tag(fde);
+	assert_int_equal(0, tag);
+
+	tevent_fd_set_tag(fde, 1);
+	tag = tevent_fd_get_tag(fde);
+	assert_int_equal(1, tag);
+
+	tevent_re_initialise(ev);
+
+	tag = tevent_fd_get_tag(fde);
+	assert_int_equal(1, tag);
+
+	TALLOC_FREE(fde);
+}
+
+static void test_timer_tag(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	struct tevent_timer *te;
+	struct timeval next;
+	uint64_t tag;
+
+	next = tevent_timeval_current();
+	te = tevent_add_timer(ev, ev, next, timer_handler, NULL);
+	assert_non_null(te);
+
+	tag = tevent_timer_get_tag(te);
+	assert_int_equal(0, tag);
+
+	tevent_timer_set_tag(te, 1);
+	tag = tevent_timer_get_tag(te);
+	assert_int_equal(1, tag);
+
+	next = tevent_timeval_current();
+	tevent_update_timer(te, next);
+
+	tag = tevent_timer_get_tag(te);
+	assert_int_equal(1, tag);
+
+	tevent_re_initialise(ev);
+
+	tag = tevent_timer_get_tag(te);
+	assert_int_equal(1, tag);
+
+	TALLOC_FREE(te);
+}
+
+static void test_signal_tag(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	struct tevent_signal *se;
+	uint64_t tag;
+
+	se = tevent_add_signal(ev, ev, SIGUSR1, 0, signal_handler, NULL);
+	assert_non_null(se);
+
+	tag = tevent_signal_get_tag(se);
+	assert_int_equal(0, tag);
+
+	tevent_signal_set_tag(se, 1);
+	tag = tevent_signal_get_tag(se);
+	assert_int_equal(1, tag);
+
+	tevent_re_initialise(ev);
+
+	tag = tevent_signal_get_tag(se);
+	assert_int_equal(1, tag);
+
+	TALLOC_FREE(se);
+}
+
+static void test_immediate_tag(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	struct tevent_immediate *im;
+	uint64_t tag;
+
+	im = tevent_create_immediate(ev);
+	assert_non_null(im);
+
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(0, tag);
+
+	tevent_immediate_set_tag(im, 1);
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(1, tag);
+
+	tevent_schedule_immediate(im, ev, immediate_handler, NULL);
+
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(1, tag);
+
+	tevent_re_initialise(ev);
+
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(1, tag);
+
+	TALLOC_FREE(im);
+}
+
+static void test_queue_entry_tag(void **state)
+{
+	struct tevent_context *ev = (struct tevent_context *)(*state);
+	struct tevent_queue *q;
+	struct tevent_queue_entry *e1, *e2;
+	struct tevent_req *r1, *r2;
+	int *s1, *s2;
+	uint64_t tag;
+
+	q = tevent_queue_create(ev, "test_queue");
+	assert_non_null(q);
+
+	r1 = tevent_req_create(ev, &s1, int);
+	r2 = tevent_req_create(ev, &s2, int);
+	e1 = tevent_queue_add_entry(q, ev, r1, queue_trigger, NULL);
+	e2 = tevent_queue_add_entry(q, ev, r2, queue_trigger, NULL);
+
+	tag = tevent_queue_entry_get_tag(e1);
+	assert_int_equal(0, tag);
+	tag = tevent_queue_entry_get_tag(e2);
+	assert_int_equal(0, tag);
+
+	tevent_queue_entry_set_tag(e1, 1);
+	tevent_queue_entry_set_tag(e2, 2);
+
+	tag = tevent_queue_entry_get_tag(e1);
+	assert_int_equal(1, tag);
+
+	tag = tevent_queue_entry_get_tag(e2);
+	assert_int_equal(2, tag);
+
+	TALLOC_FREE(q);
+}
+
+int main(int argc, char **argv)
+{
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(test_fd_tag, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_timer_tag, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_signal_tag, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_immediate_tag, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_queue_entry_tag, test_setup, test_teardown),
+	};
+
+	cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
+
+	return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/test_tevent_trace.c b/tests/test_tevent_trace.c
new file mode 100644
index 0000000..10e1ee0
--- /dev/null
+++ b/tests/test_tevent_trace.c
@@ -0,0 +1,1324 @@
+/*
+ * Unix SMB/CIFS implementation.
+ *
+ * testing of some tevent_req aspects
+ *
+ * Copyright (C) Pavel Březina <pbrezina@redhat.com> 2021
+ *
+ *   ** NOTE! The following LGPL license applies to the tevent
+ *   ** library. This does NOT imply that all of Samba is released
+ *   ** under the LGPL
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <talloc.h>
+#include <tevent.h>
+#include <cmocka.h>
+
+struct test_ctx {
+	struct tevent_context *ev;
+
+	bool handler_skipped;
+	bool reattach_reset;
+
+	uint64_t (*get_tag)(const void *event);
+	void (*set_tag)(void *event, uint64_t tag);
+	uint64_t current_tag;
+
+	bool attach;
+	bool before_handler;
+	bool handler_called;
+	bool detach;
+};
+
+static void fd_handler(struct tevent_context *ev,
+		       struct tevent_fd *fde,
+		       uint16_t flags,
+		       void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_fd_get_tag(fde);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	return;
+}
+
+static void timer_handler(struct tevent_context *ev,
+			  struct tevent_timer *te,
+			  struct timeval current_time,
+			  void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_timer_get_tag(te);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	return;
+}
+
+static void signal_handler(struct tevent_context *ev,
+			   struct tevent_signal *se,
+			   int signum,
+			   int count,
+			   void *siginfo,
+			   void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_signal_get_tag(se);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	return;
+}
+
+static void immediate_handler(struct tevent_context *ctx,
+			      struct tevent_immediate *im,
+			      void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_immediate_get_tag(im);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	return;
+}
+
+static void immediate_handler_reschedule(struct tevent_context *ctx,
+					 struct tevent_immediate *im,
+					 void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_immediate_get_tag(im);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+
+	assert_false(tctx->reattach_reset);
+	tctx->reattach_reset = true;
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_false(tctx->reattach_reset);
+	assert_false(tctx->handler_skipped);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_int_not_equal(tag, tctx->current_tag);
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(tag, tctx->current_tag);
+
+	tctx->handler_skipped = true;
+	tctx->reattach_reset = true;
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_false(tctx->reattach_reset);
+	assert_false(tctx->handler_skipped);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_int_not_equal(tag, tctx->current_tag);
+	tag = tevent_immediate_get_tag(im);
+	assert_int_equal(tag, tctx->current_tag);
+}
+
+static void fd_handler_free(struct tevent_context *ev,
+			    struct tevent_fd *fde,
+			    uint16_t flags,
+			    void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_fd_get_tag(fde);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	TALLOC_FREE(fde);
+	assert_true(tctx->detach);
+	return;
+}
+
+static void timer_handler_free(struct tevent_context *ev,
+			       struct tevent_timer *te,
+			       struct timeval current_time,
+			       void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_timer_get_tag(te);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	TALLOC_FREE(te);
+	assert_true(tctx->detach);
+	return;
+}
+
+static void signal_handler_free(struct tevent_context *ev,
+				struct tevent_signal *se,
+				int signum,
+				int count,
+				void *siginfo,
+				void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_signal_get_tag(se);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	TALLOC_FREE(se);
+	assert_true(tctx->detach);
+	return;
+}
+
+static void immediate_handler_free(struct tevent_context *ctx,
+				   struct tevent_immediate *im,
+				   void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tevent_immediate_get_tag(im);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	tctx->handler_called = true;
+	assert_int_equal(tag, tctx->current_tag);
+	TALLOC_FREE(im);
+	assert_true(tctx->detach);
+	return;
+}
+
+static void trace_event_cb(void *event,
+			   enum tevent_event_trace_point point,
+			   void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag = tctx->get_tag(event);
+
+	switch (point) {
+	case TEVENT_EVENT_TRACE_ATTACH:
+		if (tctx->reattach_reset) {
+			assert_true(tctx->attach);
+			assert_true(tctx->detach);
+			tctx->attach = false;
+			tctx->before_handler = false;
+			tctx->handler_called = false;
+			tctx->detach = false;
+			tctx->handler_skipped = false;
+			tctx->reattach_reset = false;
+		}
+		assert_false(tctx->attach);
+		assert_false(tctx->before_handler);
+		assert_false(tctx->handler_called);
+		assert_false(tctx->detach);
+		tctx->attach = true;
+		assert_int_equal(tag, tctx->current_tag);
+		tag = ++tctx->current_tag;
+		tctx->set_tag(event, tag);
+		break;
+	case TEVENT_EVENT_TRACE_BEFORE_HANDLER:
+		assert_true(tctx->attach);
+		assert_false(tctx->before_handler);
+		assert_false(tctx->handler_called);
+		assert_false(tctx->detach);
+		tctx->before_handler = true;
+		assert_int_equal(tag, tctx->current_tag);
+		break;
+	case TEVENT_EVENT_TRACE_DETACH:
+		assert_true(tctx->attach);
+		if (tctx->handler_skipped) {
+			assert_false(tctx->before_handler);
+			assert_false(tctx->handler_called);
+		} else {
+			assert_true(tctx->before_handler);
+			assert_true(tctx->handler_called);
+		}
+		assert_false(tctx->detach);
+		tctx->detach = true;
+		assert_int_equal(tag, tctx->current_tag);
+		break;
+	}
+}
+
+static void trace_event_cb1(void *event,
+			   enum tevent_event_trace_point point,
+			   void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	uint64_t tag;
+
+	switch (point) {
+	case TEVENT_EVENT_TRACE_ATTACH:
+		tctx->attach = true;
+		tag = ++tctx->current_tag;
+		tctx->set_tag(event, tag);
+		break;
+	case TEVENT_EVENT_TRACE_BEFORE_HANDLER:
+		tctx->before_handler = true;
+		break;
+	case TEVENT_EVENT_TRACE_DETACH:
+		tctx->detach = true;
+		break;
+	}
+}
+
+static int test_setup(void **state)
+{
+	struct test_ctx *tctx;
+
+	tctx = talloc_zero(NULL, struct test_ctx);
+	assert_non_null(tctx);
+
+	tctx->ev = tevent_context_init(tctx);
+	assert_non_null(tctx->ev);
+
+	*state = tctx;
+	return 0;
+}
+
+static int test_teardown(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tctx->get_tag = NULL;
+	tctx->set_tag = NULL;
+	tevent_set_trace_fd_callback(tctx->ev, NULL, NULL);
+	tevent_set_trace_timer_callback(tctx->ev, NULL, NULL);
+	tevent_set_trace_signal_callback(tctx->ev, NULL, NULL);
+	tevent_set_trace_immediate_callback(tctx->ev, NULL, NULL);
+	TALLOC_FREE(tctx);
+	return 0;
+}
+
+static uint64_t fd_get_tag(const void *_event)
+{
+	const struct tevent_fd *event =
+		(const struct tevent_fd *)_event;
+
+	return tevent_fd_get_tag(event);
+}
+
+static void fd_set_tag(void *_event, uint64_t tag)
+{
+	struct tevent_fd *event =
+		(struct tevent_fd *)_event;
+
+	tevent_fd_set_tag(event, tag);
+}
+
+static uint64_t timer_get_tag(const void *_event)
+{
+	const struct tevent_timer *event =
+		(const struct tevent_timer *)_event;
+
+	return tevent_timer_get_tag(event);
+}
+
+static void timer_set_tag(void *_event, uint64_t tag)
+{
+	struct tevent_timer *event =
+		(struct tevent_timer *)_event;
+
+	tevent_timer_set_tag(event, tag);
+}
+
+static uint64_t signal_get_tag(const void *_event)
+{
+	const struct tevent_signal *event =
+		(const struct tevent_signal *)_event;
+
+	return tevent_signal_get_tag(event);
+}
+
+static void signal_set_tag(void *_event, uint64_t tag)
+{
+	struct tevent_signal *event =
+		(struct tevent_signal *)_event;
+
+	tevent_signal_set_tag(event, tag);
+}
+
+static uint64_t immediate_get_tag(const void *_event)
+{
+	const struct tevent_immediate *event =
+		(const struct tevent_immediate *)_event;
+
+	return tevent_immediate_get_tag(event);
+}
+
+static void immediate_set_tag(void *_event, uint64_t tag)
+{
+	struct tevent_immediate *event =
+		(struct tevent_immediate *)_event;
+
+	tevent_immediate_set_tag(event, tag);
+}
+
+static uint64_t queue_entry_get_tag(const void *_event)
+{
+	const struct tevent_queue_entry *event =
+		(const struct tevent_queue_entry *)_event;
+
+	return tevent_queue_entry_get_tag(event);
+}
+
+static void queue_entry_set_tag(void *_event, uint64_t tag)
+{
+	struct tevent_queue_entry *event =
+		(struct tevent_queue_entry *)_event;
+
+	tevent_queue_entry_set_tag(event, tag);
+}
+
+static void test_trace_event_fd__loop(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_fd *fde;
+
+	tctx->get_tag = fd_get_tag;
+	tctx->set_tag = fd_set_tag;
+	tevent_set_trace_fd_callback(tctx->ev, (tevent_trace_fd_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	fde = tevent_add_fd(tctx->ev, tctx, 0, TEVENT_FD_WRITE, fd_handler, tctx);
+	assert_non_null(fde);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	TEVENT_FD_WRITEABLE(fde);
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	TALLOC_FREE(fde);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_fd__reset(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_fd *fde;
+
+	tctx->get_tag = fd_get_tag;
+	tctx->set_tag = fd_set_tag;
+	tevent_set_trace_fd_callback(tctx->ev, (tevent_trace_fd_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	fde = tevent_add_fd(tctx->ev, tctx, 0, TEVENT_FD_WRITE, fd_handler, tctx);
+	assert_non_null(fde);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	tevent_re_initialise(tctx->ev);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_fd__free(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_fd *fde;
+
+	tctx->get_tag = fd_get_tag;
+	tctx->set_tag = fd_set_tag;
+	tevent_set_trace_fd_callback(tctx->ev, (tevent_trace_fd_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	fde = tevent_add_fd(tctx->ev, tctx, 0, TEVENT_FD_WRITE, fd_handler, tctx);
+	assert_non_null(fde);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	TALLOC_FREE(fde);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_fd__free_in_handler(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_fd *fde;
+
+	tctx->get_tag = fd_get_tag;
+	tctx->set_tag = fd_set_tag;
+	tevent_set_trace_fd_callback(tctx->ev, (tevent_trace_fd_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	fde = tevent_add_fd(tctx->ev, tctx, 0, TEVENT_FD_WRITE, fd_handler_free, tctx);
+	assert_non_null(fde);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	TEVENT_FD_WRITEABLE(fde);
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_timer__loop(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_timer *te;
+	struct timeval next;
+
+	tctx->get_tag = timer_get_tag;
+	tctx->set_tag = timer_set_tag;
+	tevent_set_trace_timer_callback(tctx->ev, (tevent_trace_timer_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	next = tevent_timeval_current();
+	te = tevent_add_timer(tctx->ev, tctx, next, timer_handler, tctx);
+	assert_non_null(te);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	/* timer events are self destructing after calling the handler */
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_timer__reset(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_timer *te;
+	struct timeval next;
+
+	tctx->get_tag = timer_get_tag;
+	tctx->set_tag = timer_set_tag;
+	tevent_set_trace_timer_callback(tctx->ev, (tevent_trace_timer_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	next = tevent_timeval_current();
+	te = tevent_add_timer(tctx->ev, tctx, next, timer_handler, tctx);
+	assert_non_null(te);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_true(tctx->attach);
+
+	assert_false(tctx->reattach_reset);
+	tctx->handler_skipped = true;
+	tctx->reattach_reset = true;
+	next = tevent_timeval_current();
+	tevent_update_timer(te, next);
+	assert_false(tctx->reattach_reset);
+	assert_false(tctx->handler_skipped);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	tevent_re_initialise(tctx->ev);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_timer__free(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_timer *te;
+	struct timeval next;
+
+	tctx->get_tag = timer_get_tag;
+	tctx->set_tag = timer_set_tag;
+	tevent_set_trace_timer_callback(tctx->ev, (tevent_trace_timer_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	next = tevent_timeval_current();
+	te = tevent_add_timer(tctx->ev, tctx, next, timer_handler, tctx);
+	assert_non_null(te);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_true(tctx->attach);
+
+	tctx->handler_skipped = true;
+	TALLOC_FREE(te);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_timer__free_in_handler(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_timer *te;
+	struct timeval next;
+
+	tctx->get_tag = timer_get_tag;
+	tctx->set_tag = timer_set_tag;
+	tevent_set_trace_timer_callback(tctx->ev, (tevent_trace_timer_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	next = tevent_timeval_current();
+	te = tevent_add_timer(tctx->ev, tctx, next, timer_handler_free, tctx);
+	assert_non_null(te);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_signal__loop(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_signal *se;
+
+	tctx->get_tag = signal_get_tag;
+	tctx->set_tag = signal_set_tag;
+	tevent_set_trace_signal_callback(tctx->ev, (tevent_trace_signal_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	se = tevent_add_signal(tctx->ev, tctx, SIGUSR1, 0, signal_handler, tctx);
+	assert_non_null(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	kill(getpid(), SIGUSR1);
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	TALLOC_FREE(se);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_signal__reset(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_signal *se;
+
+	tctx->get_tag = signal_get_tag;
+	tctx->set_tag = signal_set_tag;
+	tevent_set_trace_signal_callback(tctx->ev, (tevent_trace_signal_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	se = tevent_add_signal(tctx->ev, tctx, SIGUSR1, 0, signal_handler, tctx);
+	assert_non_null(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	TALLOC_FREE(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_signal__free(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_signal *se;
+
+	tctx->get_tag = signal_get_tag;
+	tctx->set_tag = signal_set_tag;
+	tevent_set_trace_signal_callback(tctx->ev, (tevent_trace_signal_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	se = tevent_add_signal(tctx->ev, tctx, SIGUSR1, 0, signal_handler, tctx);
+	assert_non_null(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	TALLOC_FREE(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_signal__free_in_handler(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_signal *se;
+
+	tctx->get_tag = signal_get_tag;
+	tctx->set_tag = signal_set_tag;
+	tevent_set_trace_signal_callback(tctx->ev, (tevent_trace_signal_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	se = tevent_add_signal(tctx->ev, tctx, SIGUSR1, 0, signal_handler_free, tctx);
+	assert_non_null(se);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	kill(getpid(), SIGUSR1);
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_immediate__loop(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_immediate *im;
+
+	tctx->get_tag = immediate_get_tag;
+	tctx->set_tag = immediate_set_tag;
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	im = tevent_create_immediate(tctx);
+	assert_non_null(im);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	/* immediate events are self detaching */
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_immediate__reset(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_immediate *im;
+
+	tctx->get_tag = immediate_get_tag;
+	tctx->set_tag = immediate_set_tag;
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	im = tevent_create_immediate(tctx);
+	assert_non_null(im);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	tevent_re_initialise(tctx->ev);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_immediate__free(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_immediate *im;
+
+	tctx->get_tag = immediate_get_tag;
+	tctx->set_tag = immediate_set_tag;
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	im = tevent_create_immediate(tctx);
+	assert_non_null(im);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tctx->handler_skipped = true;
+	TALLOC_FREE(im);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_immediate__free_in_handler(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_immediate *im;
+
+	tctx->get_tag = immediate_get_tag;
+	tctx->set_tag = immediate_set_tag;
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	im = tevent_create_immediate(tctx);
+	assert_non_null(im);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler_free, tctx);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_trace_event_immediate__reschedule(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_immediate *im;
+
+	tctx->get_tag = immediate_get_tag;
+	tctx->set_tag = immediate_set_tag;
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	im = tevent_create_immediate(tctx);
+	assert_non_null(im);
+
+	assert_false(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler, tctx);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	assert_false(tctx->reattach_reset);
+	tctx->handler_skipped = true;
+	tctx->reattach_reset = true;
+	tevent_schedule_immediate(im, tctx->ev, immediate_handler_reschedule, tctx);
+	assert_false(tctx->reattach_reset);
+	assert_false(tctx->handler_skipped);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_false(tctx->reattach_reset);
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+
+	tevent_loop_once(tctx->ev);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	/* immediate events are self detaching */
+	assert_true(tctx->detach);
+}
+
+struct dummy_request_state
+{
+	int i;
+	struct tevent_queue_entry *e;
+};
+
+static void queue_trigger(struct tevent_req *req, void *private_data)
+{
+	struct test_ctx *tctx = (struct test_ctx *)private_data;
+	struct dummy_request_state *state = tevent_req_data(
+		req, struct dummy_request_state);
+
+	tctx->handler_called = true;
+	assert_int_equal(tevent_queue_entry_get_tag(state->e), state->i);
+	TALLOC_FREE(req);
+
+	return;
+}
+
+static void test_trace_queue__loop(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_queue *qa, *qb;
+	struct tevent_req *r1, *r2, *r3, *r4, *r5;
+	struct dummy_request_state *ds1, *ds2, *ds3, *ds4, *ds5;
+
+	tevent_set_trace_queue_callback(
+			tctx->ev,
+			(tevent_trace_queue_callback_t)trace_event_cb1,
+			tctx);
+	tctx->get_tag = queue_entry_get_tag;
+	tctx->set_tag = queue_entry_set_tag;
+
+	qa = tevent_queue_create(tctx->ev, "test_queue A");
+	assert_non_null(qa);
+	qb = tevent_queue_create(tctx->ev, "test_queue B");
+	assert_non_null(qb);
+
+	r1 = tevent_req_create(tctx->ev, &ds1, struct dummy_request_state);
+	ds1->e = tevent_queue_add_entry(qa,
+					tctx->ev,
+					r1,
+					queue_trigger,
+					*state);
+	ds1->i = tctx->current_tag;
+	assert_int_equal(ds1->i, 1);
+
+	r2 = tevent_req_create(tctx->ev, &ds2, struct dummy_request_state);
+	ds2->e = tevent_queue_add_entry(qa,
+					tctx->ev,
+					r2,
+					queue_trigger,
+					*state);
+	ds2->i = tctx->current_tag;
+	assert_int_equal(ds2->i, 2);
+
+	r3 = tevent_req_create(tctx->ev, &ds3, struct dummy_request_state);
+	ds3->e = tevent_queue_add_entry(qb,
+					tctx->ev,
+					r3,
+					queue_trigger,
+					*state);
+	ds3->i = tctx->current_tag;
+	assert_int_equal(ds3->i, 3);
+
+	r4 = tevent_req_create(tctx->ev, &ds4, struct dummy_request_state);
+	ds4->e = tevent_queue_add_entry(qb,
+					tctx->ev,
+					r4,
+					queue_trigger,
+					*state);
+	ds4->i = tctx->current_tag;
+	assert_int_equal(ds4->i, 4);
+
+	r5 = tevent_req_create(tctx->ev, &ds5, struct dummy_request_state);
+	ds5->e = tevent_queue_add_entry(qa,
+					tctx->ev,
+					r5,
+					queue_trigger,
+					*state);
+	ds5->i = tctx->current_tag;
+	assert_int_equal(ds5->i, 5);
+
+	tevent_loop_once(tctx->ev);
+	tevent_loop_once(tctx->ev);
+	tevent_loop_once(tctx->ev);
+	tevent_loop_once(tctx->ev);
+	tevent_loop_once(tctx->ev);
+}
+
+static void reset_tctx(struct test_ctx *tctx)
+{
+	tctx->attach = false;
+	tctx->before_handler = false;
+	tctx->handler_called = false;
+	tctx->detach = false;
+}
+
+static void test_trace_queue__extra(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	struct tevent_queue *qa;
+	struct tevent_req *r1, *r2, *r3;
+	struct dummy_request_state *ds1, *ds2, *ds3;
+
+	tevent_set_trace_queue_callback(
+				tctx->ev,
+				(tevent_trace_queue_callback_t)trace_event_cb1,
+				tctx);
+	tctx->get_tag = queue_entry_get_tag;
+	tctx->set_tag = queue_entry_set_tag;
+
+	qa = tevent_queue_create(tctx->ev, "test_queue A");
+	assert_non_null(qa);
+
+	/*
+	 * r1 - this tests optimize_empty - request is triggered immediately,
+	 * (and not even scheduled to tevent_context). The TALLOC_FREE() called
+	 * from queue_trigger removes the request/queue_entry from the queue qa.
+	 * So qa is empty
+	 */
+	r1 = tevent_req_create(tctx->ev, &ds1, struct dummy_request_state);
+	ds1->e = tevent_queue_add_optimize_empty(qa,
+						 tctx->ev,
+						 r1,
+						 queue_trigger,
+						 *state);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+	assert_int_equal(tevent_queue_length(qa), 0);
+
+	reset_tctx(tctx);
+
+	/*
+	 * Test a blocker request r2 - the trigger function is NULL.
+	 */
+	r2 = tevent_req_create(tctx->ev, &ds2, struct dummy_request_state);
+	ds2->e = tevent_queue_add_entry(qa, tctx->ev, r2, NULL, *state);
+	ds2->i = tctx->current_tag;
+	assert_true(tctx->attach);
+	assert_false(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_int_equal(tevent_queue_length(qa), 1);
+
+	/*
+	 * This runs the tevent_queue_noop_trigger().
+	 * A blocker r2 is still on the queue head, with triggered==true
+	 */
+	tevent_loop_once(tctx->ev);
+
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	/* tevent_queue_noop_trigger() is a noop. Does not set handler_called */
+	assert_false(tctx->detach);
+	assert_int_equal(tevent_queue_length(qa), 1);
+
+	/*
+	 * Add a normal request r3. It will be blocked by r2.
+	 */
+	r3 = tevent_req_create(tctx->ev, &ds3, struct dummy_request_state);
+	ds3->e = tevent_queue_add_entry(qa,
+					tctx->ev,
+					r3,
+					queue_trigger,
+					*state);
+	ds3->i = tctx->current_tag;
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_false(tctx->detach);
+	assert_int_equal(tevent_queue_length(qa), 2);
+
+	/*
+	 * Remove the blocker r2.
+	 */
+	TALLOC_FREE(r2);
+	assert_true(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_false(tctx->handler_called);
+	assert_true(tctx->detach);
+	assert_int_equal(tevent_queue_length(qa), 1);
+
+	reset_tctx(tctx);
+
+	/* Process r3 */
+	tevent_loop_once(tctx->ev);
+
+	assert_false(tctx->attach);
+	assert_true(tctx->before_handler);
+	assert_true(tctx->handler_called);
+	assert_true(tctx->detach);
+}
+
+static void test_get_set_trace_fd_callback(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tevent_trace_fd_callback_t cb;
+	void *pvt;
+
+	tevent_get_trace_fd_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+
+	tevent_set_trace_fd_callback(tctx->ev, (tevent_trace_fd_callback_t)trace_event_cb, tctx);
+	tevent_get_trace_fd_callback(tctx->ev, &cb, &pvt);
+	assert_ptr_equal(cb, trace_event_cb);
+	assert_ptr_equal(pvt, tctx);
+
+	tevent_set_trace_fd_callback(tctx->ev, NULL, NULL);
+	tevent_get_trace_fd_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+}
+
+static void test_get_set_trace_timer_callback(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tevent_trace_timer_callback_t cb;
+	void *pvt;
+
+	tevent_get_trace_timer_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+
+	tevent_set_trace_timer_callback(tctx->ev, (tevent_trace_timer_callback_t)trace_event_cb, tctx);
+	tevent_get_trace_timer_callback(tctx->ev, &cb, &pvt);
+	assert_ptr_equal(cb, trace_event_cb);
+	assert_ptr_equal(pvt, tctx);
+
+	tevent_set_trace_timer_callback(tctx->ev, NULL, NULL);
+	tevent_get_trace_timer_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+}
+
+static void test_get_set_trace_signal_callback(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tevent_trace_signal_callback_t cb;
+	void *pvt;
+
+	tevent_get_trace_signal_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+
+	tevent_set_trace_signal_callback(tctx->ev, (tevent_trace_signal_callback_t)trace_event_cb, tctx);
+	tevent_get_trace_signal_callback(tctx->ev, &cb, &pvt);
+	assert_ptr_equal(cb, trace_event_cb);
+	assert_ptr_equal(pvt, tctx);
+
+	tevent_set_trace_signal_callback(tctx->ev, NULL, NULL);
+	tevent_get_trace_signal_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+}
+
+static void test_get_set_trace_immediate_callback(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tevent_trace_immediate_callback_t cb;
+	void *pvt;
+
+	tevent_get_trace_immediate_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+
+	tevent_set_trace_immediate_callback(tctx->ev, (tevent_trace_immediate_callback_t)trace_event_cb, tctx);
+	tevent_get_trace_immediate_callback(tctx->ev, &cb, &pvt);
+	assert_ptr_equal(cb, trace_event_cb);
+	assert_ptr_equal(pvt, tctx);
+
+	tevent_set_trace_immediate_callback(tctx->ev, NULL, NULL);
+	tevent_get_trace_immediate_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+}
+
+static void test_get_set_trace_queue_callback(void **state)
+{
+	struct test_ctx *tctx = (struct test_ctx *)(*state);
+	tevent_trace_queue_callback_t cb;
+	void *pvt;
+
+	tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+
+	tevent_set_trace_queue_callback(tctx->ev, (tevent_trace_queue_callback_t)trace_event_cb, tctx);
+	tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+	assert_ptr_equal(cb, trace_event_cb);
+	assert_ptr_equal(pvt, tctx);
+
+	tevent_set_trace_queue_callback(tctx->ev, NULL, NULL);
+	tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+	assert_null(cb);
+	assert_null(pvt);
+}
+
+int main(int argc, char **argv)
+{
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(test_trace_event_fd__loop, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_fd__reset, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_fd__free, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_fd__free_in_handler, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_timer__loop, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_timer__reset, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_timer__free, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_timer__free_in_handler, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_signal__loop, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_signal__reset, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_signal__free, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_signal__free_in_handler, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_immediate__loop, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_immediate__reset, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_immediate__free, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_immediate__free_in_handler, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_event_immediate__reschedule, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_queue__loop, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_trace_queue__extra, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_get_set_trace_fd_callback, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_get_set_trace_timer_callback, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_get_set_trace_signal_callback, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_get_set_trace_immediate_callback, test_setup, test_teardown),
+		cmocka_unit_test_setup_teardown(test_get_set_trace_queue_callback, test_setup, test_teardown),
+	};
+
+	cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
+
+	return cmocka_run_group_tests(tests, NULL, NULL);
+}