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// ArraySegmentTest.cs - NUnit Test Cases for the System.ArraySegment class
//
// Ankit Jain <jankit@novell.com>
// Raja R Harinath <rharinath@novell.com>
// Jensen Somers <jensen.somers@gmail.com>
// Marek Safar (marek.safar@gmail.com)
//
// Copyright (C) 2006 Novell, Inc (http://www.novell.com)
// Copyright (C) 2012 Xamarin, Inc (http://www.xamarin.com)
//
using NUnit.Framework;
using System;
using System.Collections.Generic;
namespace MonoTests.System
{
[TestFixture]
public class ArraySegmentTest
{
[Test]
public void CtorTest1 ()
{
byte[] b_arr = new byte[4096];
Array arr;
ArraySegment<byte> seg = new ArraySegment<byte> (b_arr, 0, b_arr.Length);
Assert.AreEqual (seg.Count, b_arr.Length, "#1");
Assert.AreEqual (seg.Offset, 0, "#2");
arr = seg.Array;
Assert.AreEqual (arr.Length, 4096, "#5");
seg = new ArraySegment<byte> (b_arr, 100, b_arr.Length - 100);
Assert.AreEqual (seg.Count, b_arr.Length - 100, "#3");
Assert.AreEqual (seg.Offset, 100, "#4");
arr = seg.Array;
Assert.AreEqual (arr.Length, 4096, "#5");
}
[Test]
public void CtorTest2 ()
{
byte[] b_arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (b_arr);
Assert.AreEqual (seg.Count, b_arr.Length, "#6");
Assert.AreEqual (seg.Offset, 0, "#7");
Array arr = seg.Array;
Assert.AreEqual (arr.Length, 4096, "#8");
}
[Test]
public void CtorTest3 ()
{
EmptyArraySegTest (0);
EmptyArraySegTest (10);
}
private void EmptyArraySegTest (int len)
{
byte[] b_arr = new byte[len];
ArraySegment<byte> seg = new ArraySegment<byte> (b_arr, 0, b_arr.Length);
Assert.AreEqual (seg.Count, b_arr.Length, "#1 [array len {0}] ", len);
Assert.AreEqual (seg.Offset, 0, "#2 [array len {0}] ", len);
Array arr = seg.Array;
Assert.AreEqual (arr.Length, len, "#3 [array len {0}] ", len);
seg = new ArraySegment<byte> (b_arr, b_arr.Length, 0);
Assert.AreEqual (seg.Count, 0, "#4 [array len {0}] ", len);
Assert.AreEqual (seg.Offset, b_arr.Length, "#5 [array len {0}] ", len);
arr = seg.Array;
Assert.AreEqual (arr.Length, len, "#6 [array len {0}] ", len);
seg = new ArraySegment<byte> (b_arr);
Assert.AreEqual (seg.Count, b_arr.Length, "#7 [array len {0}] ", len);
Assert.AreEqual (seg.Offset, 0, "#8 [array len {0}] ", len);
arr = seg.Array;
Assert.AreEqual (arr.Length, len, "#9 [array len {0}] ", len);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorErrorTest ()
{
byte[] arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (arr, 1, arr.Length);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorErrorTest2 ()
{
byte[] arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (arr, 0, arr.Length + 2);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorErrorTest3 ()
{
byte[] arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (arr, -1, arr.Length);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorErrorTest4 ()
{
byte[] arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (arr, 2, -1);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorErrorTest5 ()
{
byte[] arr = new byte[4096];
ArraySegment<byte> seg = new ArraySegment<byte> (arr, 0, arr.Length + 2);
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void CtorNullTest1 ()
{
ArraySegment<byte> seg = new ArraySegment<byte> (null, 0, 1);
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void CtorNullTest2 ()
{
ArraySegment<byte> seg = new ArraySegment<byte> (null);
}
[Test]
public void TestArraySegmentEqual ()
{
string[] myArr_1 = { "The", "good" };
string[] myArr_2 = { "The", "good" };
ArraySegment<string> myArrSeg_1 = new ArraySegment<string> (myArr_1);
ArraySegment<string> myArrSeg_2 = new ArraySegment<string> (myArr_2);
// Should return true.
Assert.AreEqual (myArrSeg_1.Equals (myArrSeg_1), true);
// Should return false. Allthough the strings are the same.
Assert.AreEqual (myArrSeg_1.Equals (myArrSeg_2), false);
Assert.AreEqual (myArrSeg_1 == myArrSeg_2, false);
// Should return true.
Assert.AreEqual (myArrSeg_1 != myArrSeg_2, true);
}
#if NET_4_5
[Test]
public void IList_NotSupported ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
try {
s.Add (1);
Assert.Fail ("#1");
} catch (NotSupportedException) {
}
try {
s.Clear ();
Assert.Fail ("#2");
} catch (NotSupportedException) {
}
try {
s.Remove (3);
Assert.Fail ("#3");
} catch (NotSupportedException) {
}
try {
s.RemoveAt (3);
Assert.Fail ("#4");
} catch (NotSupportedException) {
}
try {
s.Insert (2, 3);
Assert.Fail ("#5");
} catch (NotSupportedException) {
}
}
[Test]
public void IList_GetEnumerator ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
long total = 0;
int count = 0;
foreach (var i in s) {
count++;
total += i;
}
Assert.AreEqual (3, count, "#1");
Assert.AreEqual (12, total, "#2");
}
[Test]
public void IList_IndexOf ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
Assert.AreEqual (-1, s.IndexOf (2), "#1");
Assert.AreEqual (1, s.IndexOf (4), "#2");
}
[Test]
public void IList_Contains ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
Assert.IsFalse (s.Contains (2), "#1");
Assert.IsTrue (s.Contains (4), "#2");
}
[Test]
public void IList_CopyTo ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
long[] target = new long[s.Count];
s.CopyTo (target, 0);
Assert.AreEqual (3, target[0], "#1");
Assert.AreEqual (4, target[1], "#2");
}
[Test]
public void IList_Indexer ()
{
var array = new long[] { 1, 2, 3, 4, 5, 6, -10 };
IList<long> s = new ArraySegment<long> (array, 2, 3);
Assert.AreEqual (3, s[0], "#1");
Assert.AreEqual (4, s[1], "#2");
// LAMESPEC: I have not idea why is this allowed on ReadOnly array
Assert.IsTrue (s.IsReadOnly, "#3");
s[1] = -3;
Assert.AreEqual (-3, s[1], "#2a");
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void IList_IndexerErrorTest1 ()
{
byte[] arr = new byte[4];
IList<byte> seg = new ArraySegment<byte> (arr, 1, 2);
seg[-1] = 3;
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void IList_IndexerErrorTest2 ()
{
byte[] arr = new byte[4];
IList<byte> seg = new ArraySegment<byte> (arr);
seg[4] = 3;
}
#endif
}
}
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