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      1 // Copyright 2015 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/metrics/histogram_macros.h"
      6 #include "base/time/time.h"
      7 #include "testing/gtest/include/gtest/gtest.h"
      8 
      9 namespace base {
     10 
     11 TEST(ScopedHistogramTimer, TwoTimersOneScope) {
     12   SCOPED_UMA_HISTOGRAM_TIMER("TestTimer0");
     13   SCOPED_UMA_HISTOGRAM_TIMER("TestTimer1");
     14   SCOPED_UMA_HISTOGRAM_LONG_TIMER("TestLongTimer0");
     15   SCOPED_UMA_HISTOGRAM_LONG_TIMER("TestLongTimer1");
     16 }
     17 
     18 // Compile tests for UMA_HISTOGRAM_ENUMERATION with the three different types it
     19 // accepts:
     20 // - integral types
     21 // - unscoped enums
     22 // - scoped enums
     23 TEST(HistogramMacro, IntegralPsuedoEnumeration) {
     24   UMA_HISTOGRAM_ENUMERATION("Test.FauxEnumeration", 1, 10000);
     25 }
     26 
     27 TEST(HistogramMacro, UnscopedEnumeration) {
     28   enum TestEnum : char {
     29     FIRST_VALUE,
     30     SECOND_VALUE,
     31     THIRD_VALUE,
     32     MAX_ENTRIES,
     33   };
     34   UMA_HISTOGRAM_ENUMERATION("Test.UnscopedEnumeration", SECOND_VALUE,
     35                             MAX_ENTRIES);
     36 }
     37 
     38 TEST(HistogramMacro, ScopedEnumeration) {
     39   enum class TestEnum {
     40     FIRST_VALUE,
     41     SECOND_VALUE,
     42     THIRD_VALUE,
     43     MAX_ENTRIES,
     44   };
     45   UMA_HISTOGRAM_ENUMERATION("Test.ScopedEnumeration", TestEnum::SECOND_VALUE,
     46                             TestEnum::MAX_ENTRIES);
     47 }
     48 
     49 }  // namespace base
     50