File: Text.cs

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// ****************************************************************
// Copyright 2007, Charlie Poole
// This is free software licensed under the NUnit license. You may
// obtain a copy of the license at http://nunit.org/?p=license&r=2.4
// ****************************************************************

using System;
using NUnit.Framework.Constraints;

namespace NUnit.Framework.SyntaxHelpers
{
	/// <summary>
	/// The Text class is a helper class with properties and methods
	/// that supply a number of constraints used with strings.
	/// </summary>
	public class Text
	{
		/// <summary>
		/// Text.All returns a ConstraintBuilder, which will apply
		/// the following constraint to all members of a collection,
		/// succeeding if all of them succeed.
		/// </summary>
		public static ConstraintBuilder All
		{
			get { return new ConstraintBuilder().All; }
		}

		/// <summary>
		/// Contains returns a constraint that succeeds if the actual
		/// value contains the substring supplied as an argument.
		/// </summary>
		public static Constraint Contains(string substring)
		{
			return new SubstringConstraint(substring);
		}

		/// <summary>
		/// DoesNotContain returns a constraint that fails if the actual
		/// value contains the substring supplied as an argument.
		/// </summary>
		public static Constraint DoesNotContain(string substring)
		{
			return new NotConstraint( Contains(substring) );
		}

		/// <summary>
		/// StartsWith returns a constraint that succeeds if the actual
		/// value starts with the substring supplied as an argument.
		/// </summary>
		public static Constraint StartsWith(string substring)
		{
			return new StartsWithConstraint(substring);
		}

		/// <summary>
		/// DoesNotStartWith returns a constraint that fails if the actual
		/// value starts with the substring supplied as an argument.
		/// </summary>
		public static Constraint DoesNotStartWith(string substring)
		{
			return new NotConstraint( StartsWith(substring) );
		}

		/// <summary>
		/// EndsWith returns a constraint that succeeds if the actual
		/// value ends with the substring supplied as an argument.
		/// </summary>
		public static Constraint EndsWith(string substring)
		{
			return new EndsWithConstraint(substring);
		}

		/// <summary>
		/// DoesNotEndWith returns a constraint that fails if the actual
		/// value ends with the substring supplied as an argument.
		/// </summary>
		public static Constraint DoesNotEndWith(string substring)
		{
			return new NotConstraint( EndsWith(substring) );
		}

		/// <summary>
		/// Matches returns a constraint that succeeds if the actual
		/// value matches the pattern supplied as an argument.
		/// </summary>
		/// <param name="pattern"></param>
		/// <returns></returns>
		public static Constraint Matches(string pattern)
		{
			return new RegexConstraint(pattern);
		}

		/// <summary>
		/// DoesNotMatch returns a constraint that failss if the actual
		/// value matches the pattern supplied as an argument.
		/// </summary>
		/// <param name="pattern"></param>
		/// <returns></returns>
		public static Constraint DoesNotMatch(string pattern)
		{
			return new NotConstraint( Matches(pattern) );
		}
	}
}