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// This file is part of CAF, the C++ Actor Framework. See the file LICENSE in
// the main distribution directory for license terms and copyright or visit
// https://github.com/actor-framework/actor-framework/blob/master/LICENSE.
#define CAF_SUITE telemetry.gauge
#include "caf/telemetry/gauge.hpp"
#include "core-test.hpp"
using namespace caf;
CAF_TEST(double gauges can increment and decrement) {
telemetry::dbl_gauge g;
MESSAGE("gauges start at 0");
CHECK_EQ(g.value(), 0.0);
MESSAGE("gauges are incrementable");
g.inc();
g.inc(2.0);
CHECK_EQ(g.value(), 3.0);
MESSAGE("gauges are decrementable");
g.dec();
g.dec(5.0);
CHECK_EQ(g.value(), -3.0);
MESSAGE("gauges allow setting values");
g.value(42.0);
CHECK_EQ(g.value(), 42.0);
MESSAGE("users can create gauges with custom start values");
CHECK_EQ(telemetry::dbl_gauge{42.0}.value(), 42.0);
}
CAF_TEST(integer gauges can increment and decrement) {
telemetry::int_gauge g;
MESSAGE("gauges start at 0");
CHECK_EQ(g.value(), 0);
MESSAGE("gauges are incrementable");
g.inc();
g.inc(2);
CHECK_EQ(g.value(), 3);
MESSAGE("gauges are decrementable");
g.dec();
g.dec(5);
CHECK_EQ(g.value(), -3);
MESSAGE("gauges allow setting values");
g.value(42);
MESSAGE("integer gauges also support operator++");
CHECK_EQ(++g, 43);
MESSAGE("users can create gauges with custom start values");
CHECK_EQ(telemetry::int_gauge{42}.value(), 42);
}
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