ceph/src/jaegertracing/opentelemetry-cpp/third_party/prometheus-cpp/core/tests/gauge_test.cc

   1 #include "prometheus/gauge.h"
   2
   3 #include <gtest/gtest.h>
   4
   5 namespace prometheus {
   6 namespace {
   7
   8 TEST(GaugeTest, initialize_with_zero) {
   9   Gauge gauge;
  10   EXPECT_EQ(gauge.Value(), 0);
  11 }
  12
  13 TEST(GaugeTest, inc) {
  14   Gauge gauge;
  15   gauge.Increment();
  16   EXPECT_EQ(gauge.Value(), 1.0);
  17 }
  18
  19 TEST(GaugeTest, inc_number) {
  20   Gauge gauge;
  21   gauge.Increment(4);
  22   EXPECT_EQ(gauge.Value(), 4.0);
  23 }
  24
  25 TEST(GaugeTest, inc_multiple) {
  26   Gauge gauge;
  27   gauge.Increment();
  28   gauge.Increment();
  29   gauge.Increment(5);
  30   EXPECT_EQ(gauge.Value(), 7.0);
  31 }
  32
  33 TEST(GaugeTest, inc_negative_value) {
  34   Gauge gauge;
  35   gauge.Increment(-1.0);
  36   EXPECT_EQ(gauge.Value(), -1.0);
  37 }
  38
  39 TEST(GaugeTest, dec) {
  40   Gauge gauge;
  41   gauge.Set(5.0);
  42   gauge.Decrement();
  43   EXPECT_EQ(gauge.Value(), 4.0);
  44 }
  45
  46 TEST(GaugeTest, dec_negative_value) {
  47   Gauge gauge;
  48   gauge.Decrement(-1.0);
  49   EXPECT_EQ(gauge.Value(), 1.0);
  50 }
  51
  52 TEST(GaugeTest, dec_number) {
  53   Gauge gauge;
  54   gauge.Set(5.0);
  55   gauge.Decrement(3.0);
  56   EXPECT_EQ(gauge.Value(), 2.0);
  57 }
  58
  59 TEST(GaugeTest, set) {
  60   Gauge gauge;
  61   gauge.Set(3.0);
  62   EXPECT_EQ(gauge.Value(), 3.0);
  63 }
  64
  65 TEST(GaugeTest, set_multiple) {
  66   Gauge gauge;
  67   gauge.Set(3.0);
  68   gauge.Set(8.0);
  69   gauge.Set(1.0);
  70   EXPECT_EQ(gauge.Value(), 1.0);
  71 }
  72
  73 TEST(GaugeTest, set_to_current_time) {
  74   Gauge gauge;
  75   gauge.SetToCurrentTime();
  76   EXPECT_GT(gauge.Value(), 0.0);
  77 }
  78
  79 }  // namespace
  80 }  // namespace prometheus