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bytes2you.validation's Introduction

Bytes2you.Validation

Fast, extensible, intuitive and easy-to-use C# portable library providing fluent APIs for argument validation. Gives everything you need to implement defensive programming (http://veskokolev.com/2014/04/27/defensive-programming-technique-the-way-to-fast-failure/) in your .NET applications.

Supported Frameworks

The supported frameworks are: - .NET Framework 4 and higher; - Silverlight 4 and higher; - Windows Phone 7 and higher; - .NET for Windows Store apps; - Xbox 360.

Installation

The library is available in the NuGet Gallery here. Just type: PM> Install-Package Bytes2you.Validation

API

Guard.WhenArgument(argument, "argument").Rule1().Rule2()...RuleN().Throw();

Based on the argument type there are different things that we can validate that make sense for that type (such as IsEmpty validation for string/guid/collection, etc.) and the library throws the right excpetion (ArgumentException, ArgumentNullException, ArgumentOutOfRangeException) following the best practicies.

Examples: Instead of...

public void SomeMethod(string stringArgument)
{
    if (stringArgument == null)
    {
        throw new ArgumentNullException("stringArgument");
    }
    
    if (stringArgument == "xxx")
    {
        throw new ArgumentException("Argument is equal to <xxx>.", "stringArgument");
    }
}

...we can use

public void SomeMethod(string stringArgument)
{
    Guard.WhenArgument(stringArgument, "stringArgument").IsNullOrEmpty().IsEqual("xxx").Throw();
    // Which means - when stringArgument is null or empty OR is equal to "xxx" we will throw exception. If it is null, we will throw ArgumentNullException. If it is equal to "xxx", we will throw ArgumentException.
}

Rules List

Guard.WhenArgument<T>(argument, "argument")

For all T:

  .IsEqual(value);
  .IsNotEqual(value);

When T is class:

  .IsNull();
  .IsNotNull();
  .IsInstanceOfType(type);
  .IsNotInstanceOfType(type);

When T is Nullable:

  .IsNull();
  .IsNotNull();

When T is bool:

  .IsTrue();
  .IsFalse();

When T is IComparable:

  .IsLessThan(bound);
  .IsGreaterThan(bound);
  .IsLessThanOrEqual(bound);
  .IsGreaterThanOrEqual(bound);

When T is IEnumerable:

  .IsNullOrEmpty();
  .IsNotNullOrEmpty();

When T is Guid:

  .IsEmptyGuid();
  .IsNotEmptyGuid();

When T is string:

  .IsEmpty();
  .IsNotEmpty();
  .IsNullOrEmpty();
  .IsNotNullOrEmpty();
  .IsNullOrWhiteSpace();
  .IsNotNullOrWhiteSpace();
  .IsEqual(value, comparisonType);
  .IsNotEqual(value, comparisonType);

When T is float/double:

  .IsNaN();
  .IsNotNaN();
  .IsInfinity();
  .IsNotInfinity();
  .IsPositiveInfinity();
  .IsNotPositiveInfinity();
  .IsNegativeInfinity();
  .IsNotNegativeInfinity();

When T is byte/short:

  .IsEqual(value);
  .IsNotEqual(value);
  .IsLessThan(bound);
  .IsGreaterThan(bound);
  .IsLessThanOrEqual(bound);
  .IsGreaterThanOrEqual(bound);

Stable

The codebase is fully covered with unit tests (100% code coverage). Performance tests are also presented ensuring that the library will not affect the performance of your applications.

Extensibility

One can easily add new rules (see ValidationRules namespace) and expose them thought fluent API extensions (see FluentExtensions namespace).

bytes2you.validation's People

Contributors

veskokolev avatar

Stargazers

 avatar  avatar Anggara Suwartana avatar Ali Zahid avatar Ganeshan Venkataraman avatar Martin V. Ivanov avatar Ram Hemasri avatar huysentruitw avatar Martin Veshev avatar George Dyrrahitis avatar Alexander Dzhazhev avatar RyanYANG avatar Plamen Georgiev avatar Paola avatar Kristiyan Vachev avatar Hristo Todorov avatar  avatar Stoiko Neykov avatar Alexandre Varizi Ribeiro avatar Stoyan Ruzmanov avatar Zlatin Kostov avatar Mariana Naidenova avatar Lyudmil Nikodimov avatar Michael Hex avatar Anupam Singh avatar Dixin avatar Veronica Milcheva avatar  avatar Kristian Kirov avatar Alexander Fidanov avatar  avatar

Watchers

 avatar Kristian Kirov avatar  avatar

bytes2you.validation's Issues

Argument as Expression

Instead of this verbose validation text:

Guard.WhenArgument(clientTransportAcceptor, "clientTransportAcceptor").IsNull().Throw();

could be this short:

Guard.When(() => clientTransportAcceptor).IsNull().Throw();

Distribute as one CS file

What do you think if there will be a nuget package with only one CS file with all the things for validation. And all things should be internal. I think it is a good idea to get rid of one more dependency package.
DryIoC is distributed in such way. It is even better than a PCL.

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