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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Test of classes in the tracked_objects.h classes. | 5 // Test of classes in the tracked_objects.h classes. |
| 6 | 6 |
| 7 #include "base/tracked_objects.h" | 7 #include "base/tracked_objects.h" |
| 8 | 8 |
| 9 #include "base/json/json_writer.h" | 9 #include "base/json/json_writer.h" |
| 10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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| 622 "\"file_name\":\"AnotherFileName\"," | 622 "\"file_name\":\"AnotherFileName\"," |
| 623 "\"function_name\":\"DifferentLives\"," | 623 "\"function_name\":\"DifferentLives\"," |
| 624 "\"line_number\":999" | 624 "\"line_number\":999" |
| 625 "}" | 625 "}" |
| 626 "}" | 626 "}" |
| 627 "]" | 627 "]" |
| 628 "}"; | 628 "}"; |
| 629 EXPECT_EQ(one_line_result, json); | 629 EXPECT_EQ(one_line_result, json); |
| 630 } | 630 } |
| 631 | 631 |
| 632 TEST_F(TrackedObjectsTest, TrackedTimerMilliseconds) { | |
| 633 // First make sure we basicallly transfer simple milliseconds values as | |
| 634 // expected. Most critically, things should not become null. | |
| 635 int32 kSomeMilliseconds = 243; // Some example times. | |
| 636 int64 kReallyBigMilliseconds = (1LL << 35) + kSomeMilliseconds; | |
| 637 | |
| 638 TrackedTime some = TrackedTime() + | |
| 639 Duration::FromMilliseconds(kSomeMilliseconds); | |
| 640 EXPECT_EQ(kSomeMilliseconds, (some - TrackedTime()).InMilliseconds()); | |
| 641 EXPECT_FALSE(some.is_null()); | |
| 642 | |
| 643 // Now create a big time, to check that it is wrapped modulo 2^32. | |
| 644 base::TimeTicks big = base::TimeTicks() + | |
| 645 base::TimeDelta::FromMilliseconds(kReallyBigMilliseconds); | |
| 646 EXPECT_EQ(kReallyBigMilliseconds, (big - base::TimeTicks()).InMilliseconds()); | |
| 647 | |
| 648 TrackedTime wrapped_big(big); | |
| 649 #if defined(USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) | |
| 650 // Expect wrapping at 32 bits. | |
| 651 EXPECT_EQ(kSomeMilliseconds, (wrapped_big - TrackedTime()).InMilliseconds()); | |
| 652 #else // !USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) | |
| 653 // Expect no wrapping at 32 bits. | |
| 654 EXPECT_EQ(kReallyBigMilliseconds, | |
| 655 (wrapped_big - TrackedTime()).InMilliseconds()); | |
| 656 #endif // USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) | |
| 657 } | |
| 658 | |
| 659 TEST_F(TrackedObjectsTest, TrackedTimerDuration) { | |
| 660 int kFirstMilliseconds = 793; | |
| 661 int kSecondMilliseconds = 14889; | |
| 662 | |
| 663 Duration first = Duration::FromMilliseconds(kFirstMilliseconds); | |
| 664 Duration second = Duration::FromMilliseconds(kSecondMilliseconds); | |
| 665 | |
| 666 EXPECT_EQ(kFirstMilliseconds, first.InMilliseconds()); | |
| 667 EXPECT_EQ(kSecondMilliseconds, second.InMilliseconds()); | |
| 668 | |
| 669 Duration sum = first + second; | |
| 670 EXPECT_EQ(kFirstMilliseconds + kSecondMilliseconds, sum.InMilliseconds()); | |
| 671 } | |
| 672 | |
| 673 TEST_F(TrackedObjectsTest, TrackedTimerVsTimeTicks) { | |
| 674 // Make sure that our 32 bit timer is aligned with the TimeTicks() timer. | |
| 675 | |
| 676 // First get a 64 bit timer (which should not be null). | |
| 677 base::TimeTicks ticks_before = base::TimeTicks::Now(); | |
| 678 EXPECT_FALSE(ticks_before.is_null()); | |
| 679 | |
| 680 // Then get a 32 bit timer that can be be null when it wraps. | |
| 681 TrackedTime now = TrackedTime::Now(); | |
| 682 | |
| 683 // Then get a bracketing time. | |
| 684 base::TimeTicks ticks_after = base::TimeTicks::Now(); | |
| 685 EXPECT_FALSE(ticks_after.is_null()); | |
| 686 | |
| 687 // Now make sure that we bracketed our tracked time nicely. | |
| 688 Duration before = now - TrackedTime(ticks_before); | |
| 689 EXPECT_LE(0, before.InMilliseconds()); | |
| 690 Duration after = now - TrackedTime(ticks_after); | |
| 691 EXPECT_GE(0, after.InMilliseconds()); | |
| 692 } | |
| 693 | |
| 694 TEST_F(TrackedObjectsTest, TrackedTimerDisabled) { | |
| 695 // Check to be sure disabling the collection of data induces a null time | |
| 696 // (which we know will return much faster). | |
| 697 if (!ThreadData::InitializeAndSetTrackingStatus(false)) | |
| 698 return; | |
| 699 // Since we disabled tracking, we should get a null response. | |
| 700 TrackedTime track_now = ThreadData::Now(); | |
| 701 EXPECT_TRUE(track_now.is_null()); | |
| 702 } | |
| 703 | |
| 704 TEST_F(TrackedObjectsTest, TrackedTimerEnabled) { | |
| 705 if (!ThreadData::InitializeAndSetTrackingStatus(true)) | |
| 706 return; | |
| 707 // Make sure that when we enable tracking, we get a real timer result. | |
| 708 | |
| 709 // First get a 64 bit timer (which should not be null). | |
| 710 base::TimeTicks ticks_before = base::TimeTicks::Now(); | |
| 711 EXPECT_FALSE(ticks_before.is_null()); | |
| 712 | |
| 713 // Then get a 32 bit timer that can be null when it wraps. | |
| 714 // Crtical difference from the TrackedTimerVsTimeTicks test, is that we use | |
| 715 // ThreadData::Now(). It can sometimes return the null time. | |
| 716 TrackedTime now = ThreadData::Now(); | |
| 717 | |
| 718 // Then get a bracketing time. | |
| 719 base::TimeTicks ticks_after = base::TimeTicks::Now(); | |
| 720 EXPECT_FALSE(ticks_after.is_null()); | |
| 721 | |
| 722 // Now make sure that we bracketed our tracked time nicely. | |
| 723 Duration before = now - TrackedTime(ticks_before); | |
| 724 EXPECT_LE(0, before.InMilliseconds()); | |
| 725 Duration after = now - TrackedTime(ticks_after); | |
| 726 EXPECT_GE(0, after.InMilliseconds()); | |
| 727 } | |
| 728 | |
| 729 | 632 |
| 730 } // namespace tracked_objects | 633 } // namespace tracked_objects |
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