1 // ***********************************************************************
2 // Copyright (c) 2008 Charlie Poole
4 // Permission is hereby granted, free of charge, to any person obtaining
5 // a copy of this software and associated documentation files (the
6 // "Software"), to deal in the Software without restriction, including
7 // without limitation the rights to use, copy, modify, merge, publish,
8 // distribute, sublicense, and/or sell copies of the Software, and to
9 // permit persons to whom the Software is furnished to do so, subject to
10 // the following conditions:
12 // The above copyright notice and this permission notice shall be
13 // included in all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 // ***********************************************************************
25 #define NUNIT_FRAMEWORK
29 #if !SILVERLIGHT && !PORTABLE
33 namespace NUnit.Framework.Constraints
36 /// EmptyDirectoryConstraint is used to test that a directory is empty
38 public class EmptyDirectoryConstraint : Constraint
40 private int files = 0;
41 private int subdirs = 0;
44 /// The Description of what this constraint tests, for
45 /// use in messages and in the ConstraintResult.
47 public override string Description
49 get { return "an empty directory"; }
53 /// Test whether the constraint is satisfied by a given value
55 /// <param name="actual">The value to be tested</param>
56 /// <returns>True for success, false for failure</returns>
57 public override ConstraintResult ApplyTo<TActual>(TActual actual)
59 DirectoryInfo dirInfo = actual as DirectoryInfo;
61 throw new ArgumentException("The actual value must be a DirectoryInfo", "actual");
62 files = dirInfo.GetFiles().Length;
63 subdirs = dirInfo.GetDirectories().Length;
64 bool hasSucceeded = files == 0 && subdirs == 0;
66 return new ConstraintResult(this, actual, hasSucceeded);
69 // TODO: Decide if we need a special result for this
71 ///// Write the actual value for a failing constraint test to a
72 ///// MessageWriter. The default implementation simply writes
73 ///// the raw value of actual, leaving it to the writer to
74 ///// perform any formatting.
76 ///// <param name="writer">The writer on which the actual value is displayed</param>
77 //public override void WriteActualValueTo(MessageWriter writer)
79 // DirectoryInfo dir = actual as DirectoryInfo;
81 // base.WriteActualValueTo(writer);
84 // writer.WriteActualValue(dir);
85 // writer.Write(" with {0} files and {1} directories", files, subdirs);