Name: CsabaDu.DynamicTestData
Author: CsabaDu.DynamicTestData

CsabaDu.DynamicTestData v1.0.17 — nugetz

namespace CsabaDu.DynamicTestData.DynamicDataSources;

public enum ArgsCode
{
    Instance,
    Properties,
}

namespace CsabaDu.DynamicTestData.Statics;

public static class Extensions
{
    public static object?[] Add<T>(this object?[] args, ArgsCode argsCode, T? parameter)
    => argsCode switch
    {
        ArgsCode.Instance => args,
        ArgsCode.Properties => [.. args, parameter],
        _ => throw argsCode.GetInvalidEnumArgumentException(nameof(argsCode)),
    };

    public static ArgsCode Defined(this ArgsCode argsCode, string paramName)
    => Enum.IsDefined(argsCode) ? argsCode : throw argsCode.GetInvalidEnumArgumentException(paramName);

    public static InvalidEnumArgumentException GetInvalidEnumArgumentException(this ArgsCode argsCode, string paramName)
    => new(paramName, (int)(object)argsCode, typeof(ArgsCode));
}

namespace CsabaDu.DynamicTestData.TestDataTypes.Interfaces;

public interface ITestData
{
    string Definition { get; }
    string ExitMode { get; }
    string Result { get; }
    string TestCase { get; }

    object?[] ToArgs(ArgsCode argsCode);
}

public interface ITestData<out TResult> : ITestData where TResult : notnull
{
    TResult Expected { get; }
}

namespace CsabaDu.DynamicTestData.TestDataTypes.Interfaces;

public interface ITestData<out TResult, out T1> : ITestData<TResult> where TResult : notnull
{
    T1? Arg1 { get; }
}

public interface ITestData<out TResult, out T1, out T2> : ITestData<TResult, T1> where TResult : notnull
{
    T2? Arg2 { get; }
}

// And similar extended inheritances till T9 type argument.

namespace CsabaDu.DynamicTestData.TestDataTypes;

public abstract record TestData(string Definition) : ITestData
{
    public virtual object?[] ToArgs(ArgsCode argsCode) => argsCode switch
    {
        ArgsCode.Instance => [this],
        ArgsCode.Properties => [TestCase],
        _ => throw argsCode.GetInvalidEnumArgumentException(nameof(argsCode)),
    };
}

namespace CsabaDu.DynamicTestData.TestDataTypes.Interfaces;

public interface ITestData<string> : ITestData

namespace CsabaDu.DynamicTestData.TestDataTypes;

public record TestData<T1>(string Definition, string Expected, T1? Arg1)
: TestData(Definition), ITestData<string, T1>
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg1);
}

public record TestData<T1, T2>(string Definition, string Expected, T1? Arg1, T2? Arg2)
: TestData<T1>(Definition, Expected, Arg1), ITestData<string, T1, T2>
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg2);
}

// And similar extended inheritances till T9 type argument.

namespace CsabaDu.DynamicTestData.TestDataTypes.Interfaces;

public interface ITestDataReturns<out TStruct> : ITestData<TStruct> where TStruct : struct;

namespace CsabaDu.DynamicTestData.TestDataTypes;

public abstract record TestDataReturns<TStruct>(string Definition, TStruct Expected)
: TestData(Definition), ITestDataReturns<out TStruct>
where TStruct : struct
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Expected);
}

public record TestDataReturns<TStruct, T1>(string Definition, TStruct Expected, T1? Arg1)
: TestDataReturns<TStruct>(Definition, Expected), ITestData<TStruct, T1>
where TStruct : struct
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg1);
}

public record TestDataReturns<TStruct, T1, T2>(string Definition, TStruct Expected, T1? Arg1, T2? Arg2)
: TestDataReturns<TStruct, T1>(Definition, Expected, Arg1), ITestData<TStruct, T1, T2>
where TStruct : struct
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg2);
}

// And similar extended inheritances till T9 type argument.

namespace CsabaDu.DynamicTestData.TestDataTypes.Interfaces;

public interface ITestDataThrows<out TException> : ITestData<TException> where TException : Exception;

namespace CsabaDu.DynamicTestData.TestDataTypes;

public abstract record TestDataThrows<TException>(string Definition, TException Expected, string? ParamName, string? Message)
: TestData(Definition), ITestDataThrows<out TException>
where TException : Exception
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Expected);
}

public record TestDataThrows<TException, T1>(string Definition, TException Expected, string? ParamName, string? Message, T1? Arg1)
: TestDataThrows<TException>(Definition, Expected, ParamName, Message), ITestData<TException, T1>
where TException : Exception
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg1);
}

public record TestDataThrows<TException, T1, T2>(string Definition, TException Expected, string? ParamName, string? Message, T1? Arg1, T2? Arg2)
: TestDataThrows<TException, T1>(Definition, Expected, ParamName, Message, Arg1), ITestData<TException, T1, T2>
where TException : Exception
{
    public override object?[] ToArgs(ArgsCode argsCode)
    => base.ToArgs(argsCode).Add(argsCode, Arg2);
}

// And similar extended inheritances till T9 type argument.

namespace CsabaDu.DynamicTestData.DynamicDataSources;

public abstract class DynamicDataSource(ArgsCode argsCode)
{
    protected ArgsCode ArgsCode { get; private init; } = argsCode.Defined(nameof(argsCode));

    public static string GetDisplayName(string? testMethodName, params object?[]? args)
    => $"{testMethodName}({args?[0]})";

    #region TestDataToArgs
    public object?[] TestDataToArgs<T1>(string definition, string expected, T1? arg1)
    => new TestData<T1>(definition, expected, arg1).ToArgs(ArgsCode);

    public object?[] TestDataToArgs<T1, T2>(string definition, string expected, T1? arg1, T2? arg2)
    => new TestData<T1, T2>(definition, expected, arg1, arg2).ToArgs(ArgsCode);

    // TestDataToArgs<> overloads here

    #endregion

    #region TestDataReturnsToArgs
    public object?[] TestDataReturnsToArgs<TStruct, T1>(string definition, TStruct expected, T1? arg1)
    where TStruct : struct
    => new TestDataReturns<TStruct, T1>(definition, expected, arg1).ToArgs(ArgsCode);

    public object?[] TestDataReturnsToArgs<TStruct, T1, T2>(string definition, TStruct expected, T1? arg1, T2? arg2) where TStruct : struct
    => new TestDataReturns<TStruct, T1, T2>(definition, expected, arg1, arg2).ToArgs(ArgsCode);

    // TestDataReturnsToArgs<> overloads here

    #endregion

    #region TestDataThrowsToArgs
    public object?[] TestDataThrowsToArgs<TException, T1>(string definition, TException expected, T1? arg1)
    where TException : Exception
    => new TestDataThrows<TException, T1>(definition, expected, arg1).ToArgs(ArgsCode);

    public object?[] TestDataThrowsToArgs<TException, T1, T2>(string definition, TException expected, T1? arg1, T2? arg2) where TException : Exception
    => new TestDataThrows<TException, T1, T2>(definition, expected, arg1, arg2).ToArgs(ArgsCode);

    // TestDataThrowsToArgs<> overloads here

    #endregion
}

namespace CsabaDu.DynamicTestData.SampleCodes;

public class DemoClass
{
    public const string GreaterThanCurrentDateTimeMessage
        = "The DateTime parameter cannot be greater than the current date and time.";

    public bool IsOlder(DateTime thisDate, DateTime otherDate)
    {
        if (thisDate <= DateTime.Now && otherDate <= DateTime.Now)
        {
            return thisDate > otherDate;
        }

        throw new ArgumentOutOfRangeException(getParamName(), GreaterThanCurrentDateTimeMessage);

        #region Local methods
        string getParamName()
        => thisDate > DateTime.Now ? nameof(thisDate) : nameof(otherDate);
        #endregion
    }
}

namespace CsabaDu.DynamicTestData.SampleCodes.DynamicDataSources;

public class NativeTestDataSource(ArgsCode argsCode) : DynamicDataSource(argsCode)
{
    private readonly DateTime DateTimeNow = DateTime.Now;

    private DateTime _thisDate;
    private DateTime _otherDate;

    public IEnumerable<object?[]> IsOlderReturnsArgsToList()
    {
        bool expected = true;
        string definition = "thisDate is greater than otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(-1);
        yield return testDataToArgs();

        expected = false;
        definition = "thisDate equals otherDate";
        _otherDate = DateTimeNow;
        yield return testDataToArgs();

        definition = "thisDate is less than otherDate";
        _thisDate = DateTimeNow.AddDays(-1);
        yield return testDataToArgs();

        #region Local methods
        object?[] testDataToArgs()
        => TestDataReturnsToArgs(definition, expected, _thisDate, _otherDate);
        #endregion
    }

    public IEnumerable<object?[]> IsOlderThrowsArgsToList()
    {
        string paramName = "otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(1);
        yield return testDataToArgs();

        paramName = "thisDate";
        _thisDate = DateTimeNow.AddDays(1);
        yield return testDataToArgs();

        #region Local methods
        object?[] testDataToArgs()
        => TestDataThrowsToArgs(getDefinition(), getExpected(), _thisDate, _otherDate);

        string getDefinition()
        => $"{paramName} is greater than the current date";

        ArgumentOutOfRangeException getExpected()
        => new(paramName, DemoClass.GreaterThanCurrentDateTimeMessage);
        #endregion
    }
}

using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace CsabaDu.DynamicTestData.SampleCodes.MSTestSamples;

[TestClass]
public sealed class DemoClassTestsInstance
{
    private readonly DemoClass _sut = new();
    private static readonly NativeTestDataSource DataSource = new(ArgsCode.Instance);
    private const string DisplayName = nameof(GetDisplayName);

    private static IEnumerable<object?[]> IsOlderReturnsArgsList
    => DataSource.IsOlderReturnsArgsToList();

    private static IEnumerable<object?[]> IsOlderThrowsArgsList
    => DataSource.IsOlderThrowsArgsToList();

    public static string GetDisplayName(MethodInfo testMethod, object?[] args)
    => DynamicDataSource.GetDisplayName(testMethod.Name, args);

    [TestMethod]
    [DynamicData(nameof(IsOlderReturnsArgsList), DynamicDataDisplayName = DisplayName)]
    public void IsOlder_validArgs_returnsExpected(TestDataReturns<bool, DateTime, DateTime> testData)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.AreEqual(testData.Expected, actual);
    }

    [TestMethod]
    [DynamicData(nameof(IsOlderThrowsArgsList), DynamicDataDisplayName = DisplayName)]
    public void IsOlder_invalidArgs_throwsException(TestDataThrows<ArgumentOutOfRangeException, DateTime, DateTime> testData)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        var actual = Assert.ThrowsException<ArgumentOutOfRangeException>(attempt);
        Assert.AreEqual(testData.Expected.ParamName, actual.ParamName);
        Assert.AreEqual(testData.Expected.Message, actual.Message);
    }
}

using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace CsabaDu.DynamicTestData.SampleCodes.MSTestSamples;

[TestClass]
public sealed class DemoClassTestsProperties
{
    private readonly DemoClass _sut = new();
    private static readonly NativeTestDataSource DataSource = new(ArgsCode.Properties);
    private const string DisplayName = nameof(GetDisplayName);
    private const TestDataSourceUnfoldingStrategy Fold = TestDataSourceUnfoldingStrategy.Fold;

    private static IEnumerable<object?[]> IsOlderReturnsArgsList
    => DataSource.IsOlderReturnsArgsToList();

    private static IEnumerable<object?[]> IsOlderThrowsArgsList
    => DataSource.IsOlderThrowsArgsToList();

    public static string GetDisplayName(MethodInfo testMethod, object?[] args)
    => DynamicDataSource.GetDisplayName(testMethod.Name, args);

    [TestMethod]
    [DynamicData(nameof(IsOlderReturnsArgsList), UnfoldingStrategy = Fold, DynamicDataDisplayName = DisplayName)]
    public void IsOlder_validArgs_returnsExpected(string testCase, bool expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(thisDate, otherDate);

        // Assert
        Assert.AreEqual(expected, actual);
    }

    [TestMethod]
    [DynamicData(nameof(IsOlderThrowsArgsList), UnfoldingStrategy = Fold, DynamicDataDisplayName = DisplayName)]
    public void IsOlder_invalidArgs_throwsException(string testCase, ArgumentOutOfRangeException expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(thisDate, otherDate);

        // Assert
        var actual = Assert.ThrowsException<ArgumentOutOfRangeException>(attempt);
        Assert.AreEqual(expected.ParamName, actual.ParamName);
        Assert.AreEqual(expected.Message, actual.Message);
    }
}

using NUnit.Framework;

namespace CsabaDu.DynamicTestData.SampleCodes.NUnitSamples;

[TestFixture]
public sealed class DemoClassTestsInstance
{
    private readonly DemoClass _sut = new();
    private static readonly NativeTestDataSource DataSource = new(ArgsCode.Instance);

    private static IEnumerable<object?[]> IsOlderReturnsArgsToList()
    => DataSource.IsOlderReturnsArgsToList();

    private static IEnumerable<object?[]> IsOlderThrowsArgsToList()
    => DataSource.IsOlderThrowsArgsToList();

    [TestCaseSource(nameof(IsOlderReturnsArgsToList))]
    public void IsOlder_validArgs_returnsExpected(TestDataReturns<bool, DateTime, DateTime> testData)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.That(actual, Is.EqualTo(testData.Expected));
    }

    [TestCaseSource(nameof(IsOlderThrowsArgsToList))]
    public void IsOlder_invalidArgs_throwsException(TestDataThrows<ArgumentOutOfRangeException, DateTime, DateTime> testData)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.Multiple(() =>
        {
            var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
            Assert.That(actual?.ParamName, Is.EqualTo(testData.Expected.ParamName));
            Assert.That(actual?.Message, Is.EqualTo(testData.Expected.Message));
        });
    }
}

{
  "$schema": "https://xunit.net/schema/current/xunit.runner.schema.json",
  "methodDisplay": "method"
}

  <ItemGroup>
    <Content Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
  </ItemGroup>

using Xunit;

namespace CsabaDu.DynamicTestData.SampleCodes.xUnitSamples;

public sealed class DemoClassTestsInstance
{
    private readonly DemoClass _sut = new();
    private static readonly NativeTestDataSource DataSource = new(ArgsCode.Instance);

    public static IEnumerable<object?[]> IsOlderReturnsArgsList
    => DataSource.IsOlderReturnsArgsToList();

    public static IEnumerable<object?[]> IsOlderThrowsArgsList
    => DataSource.IsOlderThrowsArgsToList();

    [Theory, MemberData(nameof(IsOlderReturnsArgsList))]
    public void IsOlder_validArgs_returnsExpected(TestDataReturns<bool, DateTime, DateTime> testData)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.Equal(testData.Expected, actual);
    }

    [Theory, MemberData(nameof(IsOlderThrowsArgsList))]
    public void IsOlder_invalidArgs_throwsException(TestDataThrows<ArgumentOutOfRangeException, DateTime, DateTime> testData)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
        Assert.Equal(testData.Expected.ParamName, actual.ParamName);
        Assert.Equal(testData.Expected.Message, actual.Message);
    }
}

using Xunit;

namespace CsabaDu.DynamicTestData.SampleCodes.xUnitSamples;

public sealed class DemoClassTestsProperties
{
    private readonly DemoClass _sut = new();
    private static readonly NativeTestDataSource DataSource = new(ArgsCode.Properties);

    public static IEnumerable<object?[]> IsOlderReturnsArgsList
    => DataSource.IsOlderReturnsArgsToList();

    public static IEnumerable<object?[]> IsOlderThrowsArgsList
    => DataSource.IsOlderThrowsArgsToList();

    [Theory, MemberData(nameof(IsOlderReturnsArgsList))]
    public void IsOlder_validArgs_returnsExpected(string testCase, bool expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(thisDate, otherDate);

        // Assert
        Assert.Equal(expected, actual);
    }

    [Theory, MemberData(nameof(IsOlderThrowsArgsList))]
    public void IsOlder_invalidArgs_throwsException(string testCase, ArgumentOutOfRangeException expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(thisDate, otherDate);

        // Assert
        var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
        Assert.Equal(expected.ParamName, actual.ParamName);
        Assert.Equal(expected.Message, actual.Message);
    }
}

using NUnit.Framework;

namespace CsabaDu.DynamicTestData.SampleCodes.DynamicDataSources;

public class TestCaseDataSource(ArgsCode argsCode) : DynamicDataSource(argsCode)
{
    private readonly DateTime DateTimeNow = DateTime.Now;

    private DateTime _thisDate;
    private DateTime _otherDate;

    private TestCaseData TestDataToTestCaseData<TResult>(Func<object?[]> testDataToArgs, string testMethodName) where TResult : notnull
    {
        object?[] args = testDataToArgs();
        string testCase = args[0]!.ToString()!;
        string displayName = GetDisplayName(testMethodName, testCase);
        TestCaseData? testCaseData = ArgsCode switch
        {
            ArgsCode.Instance => new(args),
            ArgsCode.Properties => new(args[1..]),
            _ => default,
        };

        return testCaseData!.SetDescription(testCase).SetName(displayName);
    }

    public IEnumerable<TestCaseData> IsOlderReturnsTestCaseDataToList(string testMethodName)
    {
        bool expected = true;
        string definition = "thisDate is greater than otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(-1);
        yield return testDataToTestCaseData();

        expected = false;
        definition = "thisDate equals otherDate";
        _otherDate = DateTimeNow;
        yield return testDataToTestCaseData();

        definition = "thisDate is less than otherDate";
        _thisDate = DateTimeNow.AddDays(-1);
        yield return testDataToTestCaseData();

        #region Local methods
        TestCaseData testDataToTestCaseData()
        => TestDataToTestCaseData<bool>(testDataToArgs, testMethodName).Returns(expected);

        object?[] testDataToArgs()
        => TestDataReturnsToArgs(definition, expected, _thisDate, _otherDate);
        #endregion
    }

    public IEnumerable<TestCaseData> IsOlderThrowsTestCaseDataToList(string testMethodName)
    {
        string paramName = "otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(1);
        yield return testDataToTestCaseData();

        paramName = "thisDate";
        _thisDate = DateTimeNow.AddDays(1);
        yield return testDataToTestCaseData();

        #region Local methods
        TestCaseData testDataToTestCaseData()
        => TestDataToTestCaseData<ArgumentOutOfRangeException>(testDataToArgs, testMethodName);

        object?[] testDataToArgs()
        => TestDataThrowsToArgs(getDefinition(), getExpected(), _thisDate, _otherDate);

        string getDefinition()
        => $"{paramName} is greater than the current date";

        ArgumentOutOfRangeException getExpected()
        => new(paramName, DemoClass.GreaterThanCurrentDateTimeMessage);
        #endregion
    }
}

using NUnit.Framework;

namespace CsabaDu.DynamicTestData.SampleCodes.NUnitSamples;

[TestFixture]
public sealed class DemoClassTestsInstanceWithTestCaseData
{
    private readonly DemoClass _sut = new();
    private static readonly TestCaseDataSource DataSource = new(ArgsCode.Instance);

    private static IEnumerable<TestCaseData> IsOlderReturnsTestCaseDataToList()
    => DataSource.IsOlderReturnsTestCaseDataToList(nameof(IsOlder_validArgs_returnsExpected));

    private static IEnumerable<TestCaseData> IsOlderThrowsTestCaseDataToList()
    => DataSource.IsOlderThrowsTestCaseDataToList(nameof(IsOlder_invalidArgs_throwsException));

    [TestCaseSource(nameof(IsOlderReturnsTestCaseDataToList))]
    public bool IsOlder_validArgs_returnsExpected(TestDataReturns<bool, DateTime, DateTime> testData)
    {
        // Arrange & Act & Assert
        return _sut.IsOlder(testData.Arg1, testData.Arg2);
    }

    [TestCaseSource(nameof(IsOlderThrowsTestCaseDataToList))]
    public void IsOlder_invalidArgs_throwsException(TestDataThrows<ArgumentOutOfRangeException, DateTime, DateTime> testData)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.Multiple(() =>
        {
            var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
            Assert.That(actual?.ParamName, Is.EqualTo(testData.Expected.ParamName));
            Assert.That(actual?.Message, Is.EqualTo(testData.Expected.Message));
        });
    }
}

using NUnit.Framework;

namespace CsabaDu.DynamicTestData.SampleCodes.NUnitSamples;

[TestFixture]
public sealed class DemoClassTestsPropertiesWithTestCaseData
{
    private readonly DemoClass _sut = new();
    private static readonly TestCaseDataSource DataSource = new(ArgsCode.Properties);

    private static IEnumerable<TestCaseData> IsOlderReturnsTestCaseDataToList()
    => DataSource.IsOlderReturnsTestCaseDataToList(nameof(IsOlder_validArgs_returnsExpected));

    private static IEnumerable<TestCaseData> IsOlderThrowsTestCaseDataToList()
    => DataSource.IsOlderThrowsTestCaseDataToList(nameof(IsOlder_invalidArgs_throwsException));

    [TestCaseSource(nameof(IsOlderReturnsTestCaseDataToList))]
    public bool IsOlder_validArgs_returnsExpected(bool expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act & Assert
        return _sut.IsOlder(thisDate, otherDate);
    }

    [TestCaseSource(nameof(IsOlderThrowsTestCaseDataToList))]
    public void IsOlder_invalidArgs_throwsException(ArgumentOutOfRangeException expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(thisDate, otherDate);

        // Assert
        Assert.Multiple(() =>
        {
            var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
            Assert.That(actual?.ParamName, Is.EqualTo(expected.ParamName));
            Assert.That(actual?.Message, Is.EqualTo(expected.Message));
        });
    }
}

using CsabaDu.DynamicTestData.Statics;
using Xunit;

namespace CsabaDu.DynamicTestData.SampleCodes.DynamicDataSources;

public class TheoryDataSource(ArgsCode argsCode)
{
    protected ArgsCode ArgsCode { get; init; } = argsCode.Defined(nameof(argsCode));

    private readonly DateTime DateTimeNow = DateTime.Now;

    private DateTime _thisDate;
    private DateTime _otherDate;
    private ITestData? _testData;

    private void AddTestDataReturns(TheoryData theoryData, string definition, bool expected)
    {
        _testData = new TestDataReturns<bool, DateTime, DateTime>(definition, expected, _thisDate, _otherDate);
        AddTestData<bool>(theoryData);
    }

    private void AddTestDataThrows(TheoryData theoryData, string paramName)
    {
        _testData = new TestDataThrows<ArgumentOutOfRangeException, DateTime, DateTime>(getDefinition(), getExpected(), _thisDate, _otherDate);
        AddTestData<ArgumentOutOfRangeException>(theoryData);

        #region Local methods
        string getDefinition()
        => $"{paramName} is greater than the current date";

        ArgumentOutOfRangeException getExpected()
        => new(paramName, DemoClass.GreaterThanCurrentDateTimeMessage);
        #endregion
    }

    private void AddTestData<TResult>(TheoryData theoryData) where TResult : notnull
    {
        var testData = _testData as ITestData<TResult, DateTime, DateTime>;

        switch (ArgsCode)
        {
            case ArgsCode.Instance:
                (theoryData as TheoryData<ITestData<TResult, DateTime, DateTime>>)!.Add(testData!);
                break;
            case ArgsCode.Properties:
                (theoryData as TheoryData<TResult, DateTime, DateTime>)!.Add(testData!.Expected, testData.Arg1, testData.Arg2);
                break;
            default:
                break;
        }
    }

    public TheoryData IsOlderReturnsToTheoryData()
    {
        TheoryData? theoryData = ArgsCode switch
        {
            ArgsCode.Instance => new TheoryData<ITestData<bool, DateTime, DateTime>>(),
            ArgsCode.Properties => new TheoryData<bool, DateTime, DateTime>(),
            _ => default,
        };

        bool expected = true;
        string definition = "thisDate is greater than otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(-1);
        addTestData();

        expected = false;
        definition = "thisDate equals otherDate";
        _otherDate = DateTimeNow;
        addTestData();

        definition = "thisDate is less than otherDate";
        _thisDate = DateTimeNow.AddDays(-1);
        addTestData();

        return theoryData!;

        #region Local methods
        void addTestData()
        => AddTestDataReturns(theoryData!, definition, expected);
        #endregion
    }

    public TheoryData IsOlderThrowsToTheoryData()
    {
        TheoryData? theoryData = ArgsCode switch
        {
            ArgsCode.Instance => new TheoryData<ITestData<ArgumentOutOfRangeException, DateTime, DateTime>>(),
            ArgsCode.Properties => new TheoryData<ArgumentOutOfRangeException, DateTime, DateTime>(),
            _ => default,
        };

        string paramName = "otherDate";
        _thisDate = DateTimeNow;
        _otherDate = DateTimeNow.AddDays(1);
        addTestData();

        paramName = "thisDate";
        _thisDate = DateTimeNow.AddDays(1);
        addTestData();

        return theoryData!;

        #region Local methods
        void addTestData()
        => AddTestDataThrows(theoryData!, paramName);
        #endregion
    }
}

using Xunit;

namespace CsabaDu.DynamicTestData.SampleCodes.xUnitSamples;

public sealed class DemoClassTestsInstanceWithTheoryData
{
    private readonly DemoClass _sut = new();
    private static readonly TheoryDataSource DataSource = new(ArgsCode.Instance);

    public static TheoryData<ITestData<bool, DateTime, DateTime>> IsOlderReturnsArgsTheoryData
    => (DataSource.IsOlderReturnsToTheoryData() as TheoryData<ITestData<bool, DateTime, DateTime>>)!;

    public static TheoryData<ITestData<ArgumentOutOfRangeException, DateTime, DateTime>> IsOlderThrowsArgsTheoryData
    => (DataSource.IsOlderThrowsToTheoryData() as TheoryData<ITestData<ArgumentOutOfRangeException, DateTime, DateTime>>)!;

    [Theory, MemberData(nameof(IsOlderReturnsArgsTheoryData))]
    public void IsOlder_validArgs_returnsExpected(ITestData<bool, DateTime, DateTime> testData)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        Assert.Equal(testData.Expected, actual);
    }

    [Theory, MemberData(nameof(IsOlderThrowsArgsTheoryData))]
    public void IsOlder_invalidArgs_throwsException(ITestData<ArgumentOutOfRangeException, DateTime, DateTime> testData)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(testData.Arg1, testData.Arg2);

        // Assert
        var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
        Assert.Equal(testData.Expected.ParamName, actual.ParamName);
        Assert.Equal(testData.Expected.Message, actual.Message);
    }
}

using Xunit;

namespace CsabaDu.DynamicTestData.SampleCodes.xUnitSamples;

public sealed class DemoClassTestsPropertiesWithTheoryData
{
    private readonly DemoClass _sut = new();
    private static readonly TheoryDataSource DataSource = new(ArgsCode.Properties);

    public static TheoryData<bool, DateTime, DateTime> IsOlderReturnsArgsTheoryData
    => (DataSource.IsOlderReturnsToTheoryData() as TheoryData<bool, DateTime, DateTime>)!;

    public static TheoryData<ArgumentOutOfRangeException, DateTime, DateTime> IsOlderThrowsArgsTheoryData
    => (DataSource.IsOlderThrowsToTheoryData() as TheoryData<ArgumentOutOfRangeException, DateTime, DateTime>)!;

    [Theory, MemberData(nameof(IsOlderReturnsArgsTheoryData))]
    public void IsOlder_validArgs_returnsExpected(bool expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        var actual = _sut.IsOlder(thisDate, otherDate);

        // Assert
        Assert.Equal(expected, actual);
    }

    [Theory, MemberData(nameof(IsOlderThrowsArgsTheoryData))]
    public void IsOlder_invalidArgs_throwsException(ArgumentOutOfRangeException expected, DateTime thisDate, DateTime otherDate)
    {
        // Arrange & Act
        void attempt() => _ = _sut.IsOlder(thisDate, otherDate);

        // Assert
        var actual = Assert.Throws<ArgumentOutOfRangeException>(attempt);
        Assert.Equal(expected.ParamName, actual.ParamName);
        Assert.Equal(expected.Message, actual.Message);
    }
}

CsabaDu/CsabaDu.DynamicTestDatav1.0.17

Get Started

Readme

CsabaDu.DynamicTestData

Table of Contents

Description

Features

Quick Start

Types

How it Works

ArgsCode Enum

Static Extensions Class

object?[] Extension Methods

ArgsCode Extension Methods

ITestData Base Interfaces

ITestData Properties

ITestData Methods

TestData Record Types

TestData

TestDataReturns

TestDataThrows

Abstract DynamicDataSource Class

ArgsCode Property

Static GetDisplayName method

Object Array Generator Methods

TestDataToArgs

TestDataReturnsToArgs

TestDataThrowsToArgs

Usage

Sample DemoClass

Test Framework Independent Dynamic Data Source

Usage in MSTest

Usage in NUnit

Usage in xUnit

Advanced Usage

Using TestCaseData type of NUnit

Using TheoryData type of xUnit

Contributing

License

Contact

FAQ

Troubleshooting

`ArgsCode` Enum

Static `Extensions` Class

`ITestData` Base Interfaces

`TestData` Record Types

Abstract `DynamicDataSource` Class

Sample `DemoClass`

Using `TestCaseData` type of NUnit

Using `TheoryData` type of xUnit