lang/cs/Org.Apache.REEF.Common.Tests/metrics/ImmutableMetricImplTests.cs

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using Org.Apache.REEF.Common.Metrics.Api;
using Org.Apache.REEF.Common.Metrics.MetricsSystem;
using Xunit;

namespace Org.Apache.REEF.Common.Tests.Metrics
{
    /// <summary>
    /// Tests various implementations of <see cref="IImmutableMetric"/>
    /// </summary>
    public sealed class ImmutableMetricImplTests
    {
        /// <summary>
        /// Tests <see cref="ImmutableCounter"/>. Creates the class and verifies 
        /// that all functions and properties work correctly.
        /// </summary>
        [Fact]
        public void TestImmutableCounter()
        {
            const string name = "default";
            const string desc = "default";
            const long value = 3;
            ImmutableCounter counter = new ImmutableCounter(new MetricsInfoImpl(name, desc), value);
            Assert.Equal(value, counter.LongValue);
            Assert.Null(counter.NumericValue);
            Assert.Equal(MetricType.Counter, counter.TypeOfMetric);

            MetricTestUtils.MetricsVisitorForTests visitor = new MetricTestUtils.MetricsVisitorForTests();
            counter.Visit(visitor);
            Assert.Equal(value, visitor.CounterValue);
        }

        /// <summary>
        /// Tests <see cref="ImmutableLongGauge"/>. Creates the class and verifies 
        /// that all functions and properties work correctly.
        /// </summary>
        [Fact]
        public void TestImmutableLongGauge()
        {
            const string name = "default";
            const string desc = "default";
            const long value = 3;
            var gauge = new ImmutableLongGauge(new MetricsInfoImpl(name, desc), value);
            Assert.Equal(value, gauge.LongValue);
            Assert.Null(gauge.NumericValue);
            Assert.Equal(MetricType.Gauge, gauge.TypeOfMetric);

            MetricTestUtils.MetricsVisitorForTests visitor = new MetricTestUtils.MetricsVisitorForTests();
            gauge.Visit(visitor);
            Assert.Equal(value, visitor.LongGauge);
        }

        /// <summary>
        /// Tests <see cref="ImmutableDoubleGauge"/>. Creates the class and verifies 
        /// that all functions and properties work correctly.</summary>
        [Fact]
        public void TestImmutableDoubleGauge()
        {
            const string name = "default";
            const string desc = "default";
            const double value = 4.3;
            var gauge = new ImmutableDoubleGauge(new MetricsInfoImpl(name, desc), value);
            Assert.NotNull(gauge.NumericValue);
            Assert.True(gauge.NumericValue.HasValue, "Numerical field should have value.");
            Assert.Equal(value, gauge.NumericValue.Value, 10);
            Assert.Null(gauge.LongValue);
            Assert.Equal(MetricType.Gauge, gauge.TypeOfMetric);

            MetricTestUtils.MetricsVisitorForTests visitor = new MetricTestUtils.MetricsVisitorForTests();
            gauge.Visit(visitor);
            Assert.Equal(value, visitor.DoubleGauge, 10);
        }
    }
}