pfpack-core-flatcollections/src/flatcollections-array/FlatArray.Tests/Tests.FlatArray.T/Cast/CanCastArray.cs at 4ea7b4616c33d8c75c841ffce9ffe308207c4ad3 · pfpack/pfpack-core-flatcollections · GitHub

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using System;
using Xunit;

namespace PrimeFuncPack.Core.Tests;

partial class FlatArrayTest
{
    // Value types

    [Theory]
    [MemberData(nameof(CanCastArray_ValueType_TypeTheSame_ExpectTrue_CaseSource))]
    public void CanCastArray_ValueType_TypeTheSame_ExpectTrue(FlatArray<byte> source)
    {
        var actual = source.CanCastArray<byte>();
        Assert.True(actual);
    }

    public static TheoryData<FlatArray<byte>> CanCastArray_ValueType_TypeTheSame_ExpectTrue_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new byte[] { 1 }.InitializeFlatArray()
            },
            {
                new byte[] { 1, 2 }.InitializeFlatArray()
            }
        };

    [Theory]
    [MemberData(nameof(CanCastArray_ValueType_TypeCompatible_ExpectTrue_CaseSource))]
    public void CanCastArray_ValueType_TypeCompatible_ExpectTrue(FlatArray<byte> source)
    {
        var actual = source.CanCastArray<sbyte>();
        Assert.True(actual);
    }

    public static TheoryData<FlatArray<byte>> CanCastArray_ValueType_TypeCompatible_ExpectTrue_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new byte[] { 1 }.InitializeFlatArray()
            },
            {
                new byte[] { 1, 2 }.InitializeFlatArray()
            }
        };

    [Theory]
    [MemberData(nameof(CanCastArray_ValueType_TypeIncompatible_ExpectFalse_CaseSource))]
    public void CanCastArray_ValueType_TypeIncompatible_ExpectFalse(FlatArray<byte> source)
    {
        var actual = source.CanCastArray<ushort>();
        Assert.False(actual);
    }

    public static TheoryData<FlatArray<byte>> CanCastArray_ValueType_TypeIncompatible_ExpectFalse_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new byte[] { 1 }.InitializeFlatArray()
            },
            {
                new byte[] { 1, 2 }.InitializeFlatArray()
            }
        };

    // Reference types

    [Theory]
    [MemberData(nameof(CanCastArray_RefType_TypeTheSame_ExpectTrue_CaseSource))]
    public void CanCastArray_RefType_TypeTheSame_ExpectTrue(FlatArray<string> source)
    {
        var actual = source.CanCastArray<string>();
        Assert.True(actual);
    }

    public static TheoryData<FlatArray<string>> CanCastArray_RefType_TypeTheSame_ExpectTrue_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new[] { "1" }.InitializeFlatArray()
            },
            {
                new[] { "1", "2" }.InitializeFlatArray()
            },
            {
                new[] { null!, "1", "2" }.InitializeFlatArray()
            }
        };

    [Theory]
    [MemberData(nameof(CanCastArray_RefType_TypeCompatible_ExpectTrue_CaseSource))]
    public void CanCastArray_RefType_TypeCompatible_ExpectTrue(FlatArray<string> source)
    {
        var actual = source.CanCastArray<object>();
        Assert.True(actual);
    }

    public static TheoryData<FlatArray<string>> CanCastArray_RefType_TypeCompatible_ExpectTrue_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new[] { "1" }.InitializeFlatArray()
            },
            {
                new[] { "1", "2" }.InitializeFlatArray()
            },
            {
                new[] { null!, "1", "2" }.InitializeFlatArray()
            }
        };

    [Theory]
    [MemberData(nameof(CanCastArray_RefType_TypeIncompatible_ExpectFalse_CaseSource))]
    public void CanCastArray_RefType_TypeIncompatible_ExpectFalse(FlatArray<object> source)
    {
        var actual = source.CanCastArray<string>();
        Assert.False(actual);
    }

    public static TheoryData<FlatArray<object>> CanCastArray_RefType_TypeIncompatible_ExpectFalse_CaseSource
        =>
        new()
        {
            {
                new(default)
            },
            {
                new[] { new object() }.InitializeFlatArray()
            },
            {
                new[] { new object(), new object() }.InitializeFlatArray()
            },
            {
                new[] { null!, new object(), new object() }.InitializeFlatArray()
            }
        };
}