Shuttle.Core.Contract

PM> Install-Package Shuttle.Core.Contract

A guard implementation that performs assertions/assumptions to prevent invalid code execution.

Guard

void Against<TException>(bool assertion, string message) where TException : Exception

Throws exception TException with the given message if the assertion is false. If exception type TException does not have a constructor that accepts a message then an InvalidOperationException is thrown instead.

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string AgainstEmpty(string? value, [CallerArgumentExpression("value")] string? name = null)

Throws a ArgumentNullException if the given value is null or empty/whitespace; else returns the value.

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Guid AgainstEmpty(Guid value, [CallerArgumentExpression("value")] string? name = null)

Throws and ArgumentException when the value is equal to an empty Guid ({00000000-0000-0000-0000-000000000000}); else returns the value.

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IEnumerable<T> AgainstEmpty<T>(IEnumerable<T> enumerable, [CallerArgumentExpression("enumerable")] string? name = null)

Throws an ArgumentException if the given enumerable does not contain any entries; else returns the enumerable.

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T AgainstNull<T>(T? value, [CallerArgumentExpression("value")] string? name = null)

Throws a ArgumentNullException if the given value is null; else returns the value.

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TEnum AgainstUndefinedEnum<TEnum>(object? value, [CallerArgumentExpression("value")] string? name = null)

Throws an InvalidOperationException if the provided value cannot be found in the given TEnum; else returns the value as TEnum.