8157728: Convert GCTimer_test to GTest

Reviewed-by: tschatzl, jcbeyler, iignatyev
This commit is contained in:
Kirill Zhaldybin 2018-10-29 14:04:42 -07:00
parent efce2c0397
commit 810ba0eb12
5 changed files with 239 additions and 214 deletions
src/hotspot/share
test/hotspot/gtest/gc/shared

@ -182,214 +182,3 @@ GCPhase* TimePartitionPhasesIterator::next() {
assert(has_next(), "Must have phases left");
return _time_partitions->phase_at(_next++);
}
/////////////// Unit tests ///////////////
#ifndef PRODUCT
class TimePartitionPhasesIteratorTest {
public:
static void all() {
one_pause();
two_pauses();
one_sub_pause_phase();
many_sub_pause_phases();
many_sub_pause_phases2();
max_nested_pause_phases();
one_concurrent();
}
static void validate_gc_phase(GCPhase* phase, int level, const char* name, const Ticks& start, const Ticks& end) {
assert(phase->level() == level, "Incorrect level");
assert(strcmp(phase->name(), name) == 0, "Incorrect name");
assert(phase->start() == start, "Incorrect start");
assert(phase->end() == end, "Incorrect end");
}
static void one_pause() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase", 2);
time_partitions.report_gc_phase_end(8);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase", 2, 8);
assert(time_partitions.sum_of_pauses() == Ticks(8) - Ticks(2), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(8) - Ticks(2), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void two_pauses() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase1", 2);
time_partitions.report_gc_phase_end(3);
time_partitions.report_gc_phase_start("PausePhase2", 4);
time_partitions.report_gc_phase_end(6);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase1", 2, 3);
validate_gc_phase(iter.next(), 0, "PausePhase2", 4, 6);
assert(time_partitions.sum_of_pauses() == Ticks(3) - Ticks(0), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(2) - Ticks(0), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void one_sub_pause_phase() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase", 2);
time_partitions.report_gc_phase_start("SubPhase", 3);
time_partitions.report_gc_phase_end(4);
time_partitions.report_gc_phase_end(5);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase", 2, 5);
validate_gc_phase(iter.next(), 1, "SubPhase", 3, 4);
assert(time_partitions.sum_of_pauses() == Ticks(3) - Ticks(0), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(3) - Ticks(0), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void max_nested_pause_phases() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase", 2);
time_partitions.report_gc_phase_start("SubPhase1", 3);
time_partitions.report_gc_phase_start("SubPhase2", 4);
time_partitions.report_gc_phase_start("SubPhase3", 5);
time_partitions.report_gc_phase_end(6);
time_partitions.report_gc_phase_end(7);
time_partitions.report_gc_phase_end(8);
time_partitions.report_gc_phase_end(9);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase", 2, 9);
validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 8);
validate_gc_phase(iter.next(), 2, "SubPhase2", 4, 7);
validate_gc_phase(iter.next(), 3, "SubPhase3", 5, 6);
assert(time_partitions.sum_of_pauses() == Ticks(7) - Ticks(0), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(7) - Ticks(0), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void many_sub_pause_phases() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase", 2);
time_partitions.report_gc_phase_start("SubPhase1", 3);
time_partitions.report_gc_phase_end(4);
time_partitions.report_gc_phase_start("SubPhase2", 5);
time_partitions.report_gc_phase_end(6);
time_partitions.report_gc_phase_start("SubPhase3", 7);
time_partitions.report_gc_phase_end(8);
time_partitions.report_gc_phase_start("SubPhase4", 9);
time_partitions.report_gc_phase_end(10);
time_partitions.report_gc_phase_end(11);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase", 2, 11);
validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 4);
validate_gc_phase(iter.next(), 1, "SubPhase2", 5, 6);
validate_gc_phase(iter.next(), 1, "SubPhase3", 7, 8);
validate_gc_phase(iter.next(), 1, "SubPhase4", 9, 10);
assert(time_partitions.sum_of_pauses() == Ticks(9) - Ticks(0), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(9) - Ticks(0), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void many_sub_pause_phases2() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("PausePhase", 2);
time_partitions.report_gc_phase_start("SubPhase1", 3);
time_partitions.report_gc_phase_start("SubPhase11", 4);
time_partitions.report_gc_phase_end(5);
time_partitions.report_gc_phase_start("SubPhase12", 6);
time_partitions.report_gc_phase_end(7);
time_partitions.report_gc_phase_end(8);
time_partitions.report_gc_phase_start("SubPhase2", 9);
time_partitions.report_gc_phase_start("SubPhase21", 10);
time_partitions.report_gc_phase_end(11);
time_partitions.report_gc_phase_start("SubPhase22", 12);
time_partitions.report_gc_phase_end(13);
time_partitions.report_gc_phase_end(14);
time_partitions.report_gc_phase_start("SubPhase3", 15);
time_partitions.report_gc_phase_end(16);
time_partitions.report_gc_phase_end(17);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "PausePhase", 2, 17);
validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 8);
validate_gc_phase(iter.next(), 2, "SubPhase11", 4, 5);
validate_gc_phase(iter.next(), 2, "SubPhase12", 6, 7);
validate_gc_phase(iter.next(), 1, "SubPhase2", 9, 14);
validate_gc_phase(iter.next(), 2, "SubPhase21", 10, 11);
validate_gc_phase(iter.next(), 2, "SubPhase22", 12, 13);
validate_gc_phase(iter.next(), 1, "SubPhase3", 15, 16);
assert(time_partitions.sum_of_pauses() == Ticks(15) - Ticks(0), "Incorrect");
assert(time_partitions.longest_pause() == Ticks(15) - Ticks(0), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
static void one_concurrent() {
TimePartitions time_partitions;
time_partitions.report_gc_phase_start("ConcurrentPhase", 2, GCPhase::ConcurrentPhaseType);
time_partitions.report_gc_phase_end(8, GCPhase::ConcurrentPhaseType);
TimePartitionPhasesIterator iter(&time_partitions);
validate_gc_phase(iter.next(), 0, "ConcurrentPhase", 2, 8);
// ConcurrentPhaseType should not affect to both 'sum_of_pauses()' and 'longest_pause()'.
assert(time_partitions.sum_of_pauses() == Tickspan(), "Incorrect");
assert(time_partitions.longest_pause() == Tickspan(), "Incorrect");
assert(!iter.has_next(), "Too many elements");
}
};
class GCTimerTest {
public:
static void all() {
gc_start();
gc_end();
}
static void gc_start() {
GCTimer gc_timer;
gc_timer.register_gc_start(1);
assert(gc_timer.gc_start() == Ticks(1), "Incorrect");
}
static void gc_end() {
GCTimer gc_timer;
gc_timer.register_gc_start(1);
gc_timer.register_gc_end(2);
assert(gc_timer.gc_end() == Ticks(2), "Incorrect");
}
};
void GCTimer_test() {
GCTimerTest::all();
TimePartitionPhasesIteratorTest::all();
}
#endif

@ -129,7 +129,6 @@ class PhasesIterator {
};
class GCTimer : public ResourceObj {
NOT_PRODUCT(friend class GCTimerTest;)
protected:
Ticks _gc_start;
Ticks _gc_end;

@ -44,7 +44,6 @@ void InternalVMTests::run() {
tty->print_cr("Running internal VM tests");
run_unit_test(TestReserveMemorySpecial_test);
run_unit_test(TestMetaspaceUtils_test);
run_unit_test(GCTimer_test);
tty->print_cr("All internal VM tests passed");
}

@ -233,7 +233,7 @@ class TimeInstant : public Rep<TimeSource> {
TimeInstant(jlong ticks) : Rep<TimeSource>(ticks) {}
friend class GranularTimer;
friend class ObjectSample;
// GC VM tests
// GC unit tests
friend class TimePartitionPhasesIteratorTest;
friend class GCTimerTest;
};

@ -0,0 +1,238 @@
/*
* Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "precompiled.hpp"
#include "gc/shared/gcTimer.hpp"
#include "utilities/ticks.hpp"
#include "unittest.hpp"
class GCTimerTest {
public:
static void register_gc_start(GCTimer* const timer, jlong ticks) {
timer->register_gc_start(Ticks(ticks));
}
static void register_gc_end(GCTimer* const timer, jlong ticks) {
timer->register_gc_end(Ticks(ticks));
}
};
TEST(GCTimer, start) {
GCTimer gc_timer;
GCTimerTest::register_gc_start(&gc_timer, 1);
EXPECT_EQ(1, gc_timer.gc_start().value());
}
TEST(GCTimer, end) {
GCTimer gc_timer;
GCTimerTest::register_gc_start(&gc_timer, 1);
GCTimerTest::register_gc_end(&gc_timer, 2);
EXPECT_EQ(2, gc_timer.gc_end().value());
}
class TimePartitionPhasesIteratorTest {
public:
static void validate_gc_phase(GCPhase* phase, int level, const char* name, const jlong& start, const jlong& end) {
EXPECT_EQ(level, phase->level());
EXPECT_STREQ(name, phase->name());
EXPECT_EQ(start, phase->start().value());
EXPECT_EQ(end, phase->end().value());
}
static void validate_pauses(const TimePartitions& time_partitions, const Tickspan& expected_sum_of_pauses, const Tickspan& expected_longest_pause) {
EXPECT_EQ(expected_sum_of_pauses, time_partitions.sum_of_pauses());
EXPECT_EQ(expected_longest_pause, time_partitions.longest_pause());
}
static void validate_pauses(const TimePartitions& time_partitions, const Tickspan& expected_pause) {
TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, expected_pause, expected_pause);
}
static void validate_pauses(const TimePartitions& time_partitions, jlong end, jlong start) {
TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, Ticks(end) - Ticks(start));
}
static void validate_pauses(const TimePartitions& time_partitions, jlong all_end, jlong all_start, jlong longest_end, jlong longest_start) {
TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, Ticks(all_end) - Ticks(all_start), Ticks(longest_end) - Ticks(longest_start));
}
static void report_gc_phase_start(TimePartitions* const partitions, const char* name, jlong ticks, GCPhase::PhaseType type=GCPhase::PausePhaseType) {
partitions->report_gc_phase_start(name, Ticks(ticks), type);
}
static void report_gc_phase_end(TimePartitions* const partitions, jlong ticks, GCPhase::PhaseType type=GCPhase::PausePhaseType) {
partitions->report_gc_phase_end(Ticks(ticks), type);
}
};
TEST(TimePartitionPhasesIterator, one_pause) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 8);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase", 2, 8));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 8, 2));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, two_pauses) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase1", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 3);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase2", 4);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 6);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase1", 2, 3));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase2", 4, 6));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 3, 0, 2, 0));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, one_sub_pause_phase) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase", 3);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 4);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 5);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase", 2, 5));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase", 3, 4));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 3, 0));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, max_nested_pause_phases) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase1", 3);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase2", 4);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase3", 5);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 6);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 7);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 8);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 9);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase", 2, 9));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 8));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 2, "SubPhase2", 4, 7));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 3, "SubPhase3", 5, 6));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 7, 0));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, many_sub_pause_phases) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase1", 3);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 4);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase2", 5);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 6);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase3", 7);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 8);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase4", 9);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 10);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 11);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase", 2, 11));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 4));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase2", 5, 6));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase3", 7, 8));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase4", 9, 10));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 9, 0));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, many_sub_pause_phases2) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "PausePhase", 2);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase1", 3);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase11", 4);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 5);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase12", 6);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 7);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 8);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase2", 9);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase21", 10);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 11);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase22", 12);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 13);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 14);
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "SubPhase3", 15);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 16);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 17);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "PausePhase", 2, 17));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase1", 3, 8));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 2, "SubPhase11", 4, 5));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 2, "SubPhase12", 6, 7));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase2", 9, 14));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 2, "SubPhase21", 10, 11));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 2, "SubPhase22", 12, 13));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 1, "SubPhase3", 15, 16));
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, 15, 0));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}
TEST(TimePartitionPhasesIterator, one_concurrent) {
TimePartitions time_partitions;
TimePartitionPhasesIteratorTest::report_gc_phase_start(&time_partitions, "ConcurrentPhase", 2, GCPhase::ConcurrentPhaseType);
TimePartitionPhasesIteratorTest::report_gc_phase_end(&time_partitions, 8, GCPhase::ConcurrentPhaseType);
TimePartitionPhasesIterator iter(&time_partitions);
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_gc_phase(iter.next(), 0, "ConcurrentPhase", 2, 8));
// ConcurrentPhaseType should not affect to both 'sum_of_pauses()' and 'longest_pause()'.
EXPECT_NO_FATAL_FAILURE(TimePartitionPhasesIteratorTest::validate_pauses(time_partitions, Tickspan()));
EXPECT_FALSE(iter.has_next()) << "Too many elements";
}