#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using NUnit.Framework;
using Spring.Core;
#endregion
namespace Spring.Objects.Support{
/// <summary>
/// Unit tests for the PropertyComparator class.
/// </summary>
/// <remarks>
/// <p>
/// The sort algorithm for arrays changed between versions 1.1 and 2.0 of the .NET
/// Framework. Hence there are two batches of tests in this suite, one for versions
/// 1.1 and 2.0 of the .NET Framework respectively.
/// </p>
/// </remarks>
/// <author>Rick Evans</author>
/// <author>Michael Loll</author>
[TestFixture]
public sealed class PropertyComparatorTests
{
[Test]
[ExpectedException(typeof(ArgumentNullException))]
public void InstantiationWithNullArgument()
{
new PropertyComparator(null);
}
[Test]
public void Compare()
{
ISortDefinition definition = new MutableSortDefinition("Age", false, true);
PropertyComparator cmp = new PropertyComparator(definition);
TestObject one = new TestObject("Rick", 19);
TestObject two = new TestObject("Balzac", 205);
int actual = cmp.Compare(one, two);
Assert.IsTrue(actual < 0); // 19 is less than 205
}
[Test]
public void CompareNestedProperty()
{
ISortDefinition definition = new MutableSortDefinition("Lawyer.Company", true, true);
PropertyComparator cmp = new PropertyComparator(definition);
TestObject one = new TestObject("Rick", 19);
one.Lawyer = new NestedTestObject("Gizajoab");
TestObject two = new TestObject("Balzac", 205);
two.Lawyer = new NestedTestObject("Wallpaperer");
int actual = cmp.Compare(one, two);
Assert.IsTrue(actual < 0); // Gizajoab is less than Wallpaperer
}
[Test]
public void CompareWithNullProperty()
{
ISortDefinition definition = new MutableSortDefinition("Lawyer.Company", true, true);
PropertyComparator cmp = new PropertyComparator(definition);
TestObject one = new TestObject("Rick", 19);
one.Lawyer = new NestedTestObject("Gizajoab");
TestObject two = new TestObject("Balzac", 205);
// no Lawyer.Company property set on object two...
int actual = cmp.Compare(one, two);
Assert.IsTrue(actual > 0); // Gizajoab is greater than null
}
[Test]
[ExpectedException(typeof(InvalidPropertyException))]
public void CompareWithNonExistantProperty()
{
ISortDefinition definition = new MutableSortDefinition("Deborahs.Banjo", true, true);
PropertyComparator cmp = new PropertyComparator(definition);
TestObject one = new TestObject("Rick", 19);
TestObject two = new TestObject("Balzac", 205);
int actual = cmp.Compare(one, two);
Assert.IsTrue(actual == 0);
}
[Test]
public void Sort()
{
ISortDefinition definition = new MutableSortDefinition("NAmE", true, true);
TestObject one = new TestObject("Rick", 19);
TestObject two = new TestObject("Balzac", 205);
TestObject three = new TestObject("Jenny", 89);
TestObject[] actual = new TestObject[] {one, two, three};
TestObject[] expected = new TestObject[] {two /*Balzac*/, three /*Jenny*/, one /*Rick*/};
PropertyComparator.Sort(actual, definition);
for (int i = 0; i < actual.Length; ++i)
{
Assert.AreEqual(expected[i].Name, actual[i].Name);
}
}
[Test]
public void SortInDescendingOrder()
{
ISortDefinition definition = new MutableSortDefinition("NAmE", true, false);
TestObject one = new TestObject("Rick", 19);
TestObject two = new TestObject("Balzac", 205);
TestObject three = new TestObject("Jenny", 89);
TestObject[] actual = new TestObject[] {one, two, three};
// Rick comes after Jenny comes after Balzac (descending sort order)...
TestObject[] expected = new TestObject[] {one /*Rick*/, three /*Jenny*/, two /*Balzac*/};
PropertyComparator.Sort(actual, definition);
for (int i = 0; i < actual.Length; ++i)
{
Assert.AreEqual(expected[i].Name, actual[i].Name);
}
}
[Test]
// [Ignore("Sort ordering is not preserved (unstable) with equal elements (c.f. System.Array.Sort (Array, IComparer)))")]
public void OrderingIsUnperturbedWithEqualProps()
{
ISortDefinition definition = new MutableSortDefinition("Age", false, true);
TestObject one = new TestObject("Rick", 19);
TestObject two = new TestObject("Balzac", 19);
TestObject three = new TestObject("Jenny", 19);
TestObject[] actual = new TestObject[] {one, two, three};
TestObject[] expected = new TestObject[] {one /*Rick*/, two /*Balzac*/, three /*Jenny*/};
PropertyComparator.Sort(actual, definition);
for (int i = 0; i < actual.Length; ++i)
{
Assert.AreEqual(expected[i].Name, actual[i].Name);
}
}
[Test]
[ExpectedException(typeof(ArgumentNullException))]
public void SortWithNullDefinition()
{
PropertyComparator.Sort(Type.EmptyTypes, null);
}
[Test]
public void CompareWithNullArguments()
{
ISortDefinition definition = new MutableSortDefinition("Nails", false, true);
Funk one = new Funk(1, "long");
PropertyComparator cmp = new PropertyComparator(definition);
Assert.AreEqual(0, cmp.Compare(null, null));
// nulls are always last (i.e. greater than)
Assert.AreEqual(1, cmp.Compare(null, one));
// any non-null instance comes before null (i.e. less than).
Assert.AreEqual(-1, cmp.Compare(one, null));
}
/// <summary>
/// Validates that a PropertyComparator can return its internal ISortDefinition
/// to a consumer for use.
/// </summary>
[Test(Description = "SPRNET-171")]
public void CanGetSortDefinition()
{
ISortDefinition definition = new MutableSortDefinition("Age", false, true);
PropertyComparator cmp = new PropertyComparator(definition);
ISortDefinition sortDefinition = cmp.SortDefinition;
Assert.AreSame(definition, sortDefinition);
Assert.AreEqual(definition.Property, sortDefinition.Property);
Assert.AreEqual(definition.Ascending, sortDefinition.Ascending);
Assert.AreEqual(definition.IgnoreCase, sortDefinition.IgnoreCase);
}
internal sealed class Funk
{
public Funk(int id, string nails)
{
_id = id;
_nails = nails;
}
private string _nails;
private int _id;
public string Nails
{
get { return _nails; }
}
public int Id
{
get { return _id; }
set { _id = value; }
}
}
}
}
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