NetFabric.Hyperlinq/NetFabric.Hyperlinq.Core.UnitTests/Aggregation/Sum/Sum.ReadOnlySpan.Tests.cs at 60a345613ce6f51da72130d11ad42995ead1bda7 · NetFabric/NetFabric.Hyperlinq · GitHub

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using NetFabric.Assertive;
using System;
using System.Linq;
using Xunit;

namespace NetFabric.Hyperlinq.UnitTests.Aggregation.Sum
{
    public class ArrayTests
    {

        [Theory]
        [MemberData(nameof(TestData.SumDouble), MemberType = typeof(TestData))]
        public void Sum_With_Double_Must_Succeed(double[] source)
        {
            // Arrange
            var wrapped = (ReadOnlySpan<double>)source.AsSpan();
            var expected = source
                .Sum();

            // Act
            var result = wrapped.AsValueEnumerable()
                .Sum();

            // Assert
            _ = result.Must()
                .BeEqualTo(expected);
        }

        [Theory]
        [MemberData(nameof(TestData.SumNullableDouble), MemberType = typeof(TestData))]
        public void Sum_With_NullableDouble_Must_Succeed(double?[] source)
        {
            // Arrange
            var wrapped = (ReadOnlySpan<double?>)source.AsSpan();
            var expected = source
                .Sum();

            // Act
            var result = wrapped.AsValueEnumerable()
                .Sum();

            // Assert
            _ = result.Must()
                .BeEqualTo(expected!.Value);
        }


        [Theory]
        [MemberData(nameof(TestData.SumDecimal), MemberType = typeof(TestData))]
        public void Sum_With_Decimal_Must_Succeed(decimal[] source)
        {
            // Arrange
            var wrapped = (ReadOnlySpan<decimal>)source.AsSpan();
            var expected = source
                .Sum();

            // Act
            var result = wrapped.AsValueEnumerable()
                .Sum();

            // Assert
            _ = result.Must()
                .BeEqualTo(expected);
        }

        [Theory]
        [MemberData(nameof(TestData.SumNullableDecimal), MemberType = typeof(TestData))]
        public void Sum_With_NullableDecimal_ValidData_Must_Succeed(decimal?[] source)
        {
            // Arrange
            var wrapped = (ReadOnlySpan<decimal?>)source.AsSpan();
            var expected = source
                .Sum();

            // Act
            var result = wrapped.AsValueEnumerable()
                .Sum();

            // Assert
            _ = result.Must()
                .BeEqualTo(expected!.Value);
        }
    }
}