78 lines
2.3 KiB
C#
78 lines
2.3 KiB
C#
// ****************************************************************
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// Copyright 2007, Charlie Poole
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// This is free software licensed under the NUnit license. You may
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// obtain a copy of the license at http://nunit.org/?p=license&r=2.4
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// ****************************************************************
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using System;
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namespace NUnit.Framework.Constraints
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{
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// TODO Needs tests
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/// <summary>
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/// ContainsConstraint tests a whether a string contains a substring
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/// or a collection contains an object. It postpones the decision of
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/// which test to use until the type of the actual argument is known.
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/// This allows testing whether a string is contained in a collection
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/// or as a substring of another string using the same syntax.
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/// </summary>
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public class ContainsConstraint : Constraint
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{
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object expected;
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Constraint realConstraint;
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private Constraint RealConstraint
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{
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get
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{
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if ( realConstraint == null )
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{
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if ( actual is string )
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this.realConstraint = new SubstringConstraint( (string)expected );
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else
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this.realConstraint = new CollectionContainsConstraint( expected );
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}
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return realConstraint;
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}
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set
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{
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realConstraint = value;
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="T:ContainsConstraint"/> class.
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/// </summary>
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/// <param name="expected">The expected.</param>
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public ContainsConstraint( object expected )
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{
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this.expected = expected;
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}
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/// <summary>
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/// Test whether the constraint is satisfied by a given value
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/// </summary>
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/// <param name="actual">The value to be tested</param>
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/// <returns>True for success, false for failure</returns>
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public override bool Matches(object actual)
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{
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this.actual = actual;
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if ( this.caseInsensitive )
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this.RealConstraint = RealConstraint.IgnoreCase;
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return this.RealConstraint.Matches( actual );
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}
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/// <summary>
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/// Write the constraint description to a MessageWriter
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/// </summary>
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/// <param name="writer">The writer on which the description is displayed</param>
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public override void WriteDescriptionTo(MessageWriter writer)
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{
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this.RealConstraint.WriteDescriptionTo(writer);
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}
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}
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}
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