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| author | Alex Vakulenko <avakulenko@google.com> | 2016-03-17 10:36:19 -0700 |
|---|---|---|
| committer | Alex Vakulenko <avakulenko@google.com> | 2016-03-21 08:28:30 -0700 |
| commit | 45779228f8c9e40851cfd23f727e2bd8ffdd4714 (patch) | |
| tree | 6673daa05f208c2d2f2f1ad7e14f6c7a2d1e85ce /base/metrics/sample_map_unittest.cc | |
| parent | 1a84f3b092fffe0c515acad230c10131a66cfd0e (diff) | |
| download | libchrome-45779228f8c9e40851cfd23f727e2bd8ffdd4714.tar.gz | |
Update libchrome to r381699
TEST=Build all
Change-Id: I962a83a044a102515c316d04bb65e7c9302e0f0c
Diffstat (limited to 'base/metrics/sample_map_unittest.cc')
| -rw-r--r-- | base/metrics/sample_map_unittest.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/base/metrics/sample_map_unittest.cc b/base/metrics/sample_map_unittest.cc index c941d65f06..3626bd0acd 100644 --- a/base/metrics/sample_map_unittest.cc +++ b/base/metrics/sample_map_unittest.cc @@ -24,6 +24,20 @@ TEST(SampleMapTest, AccumulateTest) { EXPECT_EQ(samples.redundant_count(), samples.TotalCount()); } +TEST(SampleMapTest, Accumulate_LargeValuesDontOverflow) { + SampleMap samples(1); + + samples.Accumulate(250000000, 100); + samples.Accumulate(500000000, 200); + samples.Accumulate(250000000, -200); + EXPECT_EQ(-100, samples.GetCount(250000000)); + EXPECT_EQ(200, samples.GetCount(500000000)); + + EXPECT_EQ(75000000000LL, samples.sum()); + EXPECT_EQ(100, samples.TotalCount()); + EXPECT_EQ(samples.redundant_count(), samples.TotalCount()); +} + TEST(SampleMapTest, AddSubtractTest) { SampleMap samples1(1); SampleMap samples2(2); |