From dd78c250aed0924d06e28a826c2ad565ca232045 Mon Sep 17 00:00:00 2001 From: Kunnis Date: Sun, 16 Aug 2009 03:35:31 -0500 Subject: * Added Expression based ignores to the PropertyScrambler, which makes a lot of the tests clearer because I'm not constantly resetting properties. --- OpenSim/Data/Tests/PropertyScrambler.cs | 159 ++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 OpenSim/Data/Tests/PropertyScrambler.cs (limited to 'OpenSim/Data/Tests/PropertyScrambler.cs') diff --git a/OpenSim/Data/Tests/PropertyScrambler.cs b/OpenSim/Data/Tests/PropertyScrambler.cs new file mode 100644 index 0000000..c56c10f --- /dev/null +++ b/OpenSim/Data/Tests/PropertyScrambler.cs @@ -0,0 +1,159 @@ +using System; +using System.Collections; +using System.Collections.Generic; +using System.Linq.Expressions; +using System.Reflection; +using System.Text; +using NUnit.Framework; +using NUnit.Framework.SyntaxHelpers; +using OpenMetaverse; +using OpenSim.Framework; + +namespace OpenSim.Data.Tests +{ + + //This is generic so that the lambda expressions will work right in IDEs. + public class PropertyScrambler + { + readonly System.Collections.Generic.List membersToNotScramble = new List(); + + private void AddExpressionToNotScrableList(Expression expression) + { + UnaryExpression unaryExpression = expression as UnaryExpression; + if(unaryExpression != null) + { + AddExpressionToNotScrableList(unaryExpression.Operand); + return; + } + + MemberExpression memberExpression = expression as MemberExpression; + if (memberExpression != null) + { + if (!(memberExpression.Member is PropertyInfo)) + { + throw new NotImplementedException("I don't know how deal with a MemberExpression that is a " + expression.Type); + } + membersToNotScramble.Add(memberExpression.Member.Name); + return; + } + + throw new NotImplementedException("I don't know how to parse a " + expression.Type); + } + + public PropertyScrambler DontScramble(Expression> expression) + { + AddExpressionToNotScrableList(expression.Body); + return this; + } + + public void Scramble(T obj) + { + internalScramble(obj); + } + + private void internalScramble(object obj) + { + PropertyInfo[] properties = obj.GetType().GetProperties(); + foreach (var property in properties) + { + //Skip indexers of classes. We will assume that everything that has an indexer + // is also IEnumberable. May not always be true, but should be true normally. + if(property.GetIndexParameters().Length > 0) + continue; + + RandomizeProperty(obj, property, null); + } + //Now if it implments IEnumberable, it's probably some kind of list, so we should randomize + // everything inside of it. + IEnumerable enumerable = obj as IEnumerable; + if(enumerable != null) + { + foreach (object value in enumerable) + { + internalScramble(value); + } + } + } + + private readonly Random random = new Random(); + private void RandomizeProperty(object obj, PropertyInfo property, object[] index) + {//I'd like a better way to compare, but I had lots of problems with InventoryFolderBase because the ID is inherited. + if(membersToNotScramble.Contains(property.Name)) + return; + Type t = property.PropertyType; + if (!property.CanWrite) + return; + object value = property.GetValue(obj, index); + if (value == null) + return; + + if (t == typeof(string)) + property.SetValue(obj, RandomName(), index); + else if (t == typeof(UUID)) + property.SetValue(obj, UUID.Random(), index); + else if (t == typeof(sbyte)) + property.SetValue(obj, (sbyte)random.Next(sbyte.MinValue, sbyte.MaxValue), index); + else if (t == typeof(short)) + property.SetValue(obj, (short)random.Next(short.MinValue, short.MaxValue), index); + else if (t == typeof(int)) + property.SetValue(obj, random.Next(), index); + else if (t == typeof(long)) + property.SetValue(obj, random.Next() * int.MaxValue, index); + else if (t == typeof(byte)) + property.SetValue(obj, (byte)random.Next(byte.MinValue, byte.MaxValue), index); + else if (t == typeof(ushort)) + property.SetValue(obj, (ushort)random.Next(ushort.MinValue, ushort.MaxValue), index); + else if (t == typeof(uint)) + property.SetValue(obj, Convert.ToUInt32(random.Next()), index); + else if (t == typeof(ulong)) + property.SetValue(obj, Convert.ToUInt64(random.Next()) * Convert.ToUInt64(UInt32.MaxValue), index); + else if (t == typeof(bool)) + property.SetValue(obj, true, index); + else if (t == typeof(byte[])) + { + byte[] bytes = new byte[30]; + random.NextBytes(bytes); + property.SetValue(obj, bytes, index); + } + else + internalScramble(value); + } + + private string RandomName() + { + StringBuilder name = new StringBuilder(); + int size = random.Next(5, 12); + for (int i = 0; i < size; i++) + { + char ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65))); + name.Append(ch); + } + return name.ToString(); + } + } + + [TestFixture] + public class PropertyScramblerTests + { + [Test] + public void TestScramble() + { + AssetBase actual = new AssetBase(UUID.Random(), "asset one"); + new PropertyScrambler().Scramble(actual); + } + + [Test] + public void DontScramble() + { + UUID uuid = UUID.Random(); + AssetBase asset = new AssetBase(); + asset.FullID = uuid; + new PropertyScrambler() + .DontScramble(x => x.Metadata) + .DontScramble(x => x.FullID) + .DontScramble(x => x.ID) + .Scramble(asset); + Assert.That(asset.FullID, Is.EqualTo(uuid)); + } + } +} \ No newline at end of file -- cgit v1.1