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//
// StackTest.cs
//
// Author:
// Chris Hynes <chrish@assistedsolutions.com>
//
// (C) 2001 Chris Hynes
//
using System;
using System.Collections;
using NUnit.Framework;
namespace MonoTests.System.Collections
{
[TestFixture]
public class StackTest
{
private Stack stack1;
private Stack stackInt;
[Test]
public void TestConstructor()
{
Assert.AreEqual (stack1 == null, false);
}
[Test]
public void TestICollectionConstructor1()
{
Stack stackTest = new Stack(new int[] {0, 1, 2, 3, 4});
for (int i = 4; i >= 0; i--)
Assert.AreEqual (stackTest.Pop(), i);
Assert.AreEqual (stackTest.Count, 0);
}
[Test]
public void TestICollectionConstructor2()
{
bool exceptionThrown = false;
try {
Stack stackTest = new Stack(null);
} catch (ArgumentNullException e) {
exceptionThrown = true;
Assert.AreEqual ("col", e.ParamName, "ParamName must be \"col\"");
}
Assert.IsTrue (exceptionThrown, "null argument must throw ArgumentNullException");
}
[Test]
public void TestIntConstructor1()
{
Stack stackTest = new Stack(50);
Assert.IsTrue (stackTest != null);
}
[Test]
public void TestIntConstructor2()
{
bool exceptionThrown = false;
try {
Stack stackTest = new Stack(-1);
}
catch (ArgumentOutOfRangeException e)
{
exceptionThrown = true;
Assert.AreEqual ("initialCapacity", e.ParamName, "ParamName must be \"initialCapacity\"");
}
Assert.IsTrue (exceptionThrown, "negative argument must throw ArgumentOutOfRangeException");
}
[Test]
public void TestCount()
{
Stack stackTest = new Stack();
stackTest.Push(50);
stackTest.Push(5);
stackTest.Push(0);
stackTest.Push(50);
Assert.AreEqual (stackTest.Count, 4);
}
[Test]
public void TestIsSyncronized()
{
Assert.AreEqual (stack1.IsSynchronized, false);
Assert.AreEqual (Stack.Synchronized(stack1).IsSynchronized, true);
}
[Test]
public void TestSyncRoot()
{
Assert.AreEqual (stack1.SyncRoot == null, false);
}
[Test]
public void TestGetEnumerator1()
{
stackInt.Pop();
int j = 3;
foreach (int i in stackInt)
{
Assert.AreEqual (i, j--);
}
stackInt.Clear();
IEnumerator e = stackInt.GetEnumerator();
Assert.AreEqual (e.MoveNext(), false);
}
[Test]
public void TestGetEnumerator2()
{
IEnumerator e = stackInt.GetEnumerator();
try
{
// Tests InvalidOperationException if enumerator is uninitialized
Object o = e.Current;
Assert.Fail ("InvalidOperationException should be thrown");
} catch (InvalidOperationException) {}
}
[Test]
public void TestGetEnumerator3()
{
IEnumerator e = stack1.GetEnumerator();
e.MoveNext();
try
{
// Tests InvalidOperationException if enumeration has ended
Object o = e.Current;
Assert.Fail ("InvalidOperationException should be thrown");
} catch (InvalidOperationException) {}
}
[Test]
public void TestEnumeratorReset1()
{
IEnumerator e = stackInt.GetEnumerator();
e.MoveNext();
Assert.AreEqual (4, e.Current, "current value");
e.MoveNext();
e.Reset();
e.MoveNext();
Assert.AreEqual (4, e.Current, "current value after reset");
}
[Test]
public void TestEnumeratorReset2()
{
IEnumerator e = stackInt.GetEnumerator();
e.MoveNext();
Assert.AreEqual (4, e.Current, "current value");
// modifies underlying the stack. Reset must throw InvalidOperationException
stackInt.Push(5);
try
{
e.Reset();
Assert.Fail ("InvalidOperationException should be thrown");
}
catch (InvalidOperationException) {}
}
[Test]
public void TestEnumeratorMoveNextException()
{
IEnumerator e = stackInt.GetEnumerator();
// modifies underlying the stack. MoveNext must throw InvalidOperationException
stackInt.Push(5);
try
{
e.MoveNext();
Assert.Fail ("InvalidOperationException should be thrown");
}
catch (InvalidOperationException) {}
}
[Test]
public void TestClear()
{
stackInt.Clear();
Assert.AreEqual (stackInt.Count, 0);
}
[Test]
public void TestClone()
{
Stack clone = (Stack)stackInt.Clone();
while (stackInt.Count > 0)
{
Assert.AreEqual (clone.Pop(), stackInt.Pop());
}
}
[Test]
public void TestContains()
{
string toLocate = "test";
stackInt.Push(toLocate);
stackInt.Push("chaff");
stackInt.Push(null);
Assert.IsTrue (stackInt.Contains(toLocate));
Assert.IsTrue (stackInt.Contains(null), "must contain null");
stackInt.Pop();
stackInt.Pop();
Assert.IsTrue (stackInt.Contains(toLocate));
stackInt.Pop();
Assert.IsTrue (!stackInt.Contains(toLocate));
stackInt.Push(null);
Assert.IsTrue (stackInt.Contains(null));
stackInt.Pop();
Assert.IsTrue (!stackInt.Contains(null));
}
[Test]
public void TestCopyTo()
{
int[] arr = new int[stackInt.Count - 1];
int[,] arrMulti;
try
{
stackInt.CopyTo(null, 0);
Assert.Fail ("Should throw an ArgumentNullException");
} catch (ArgumentNullException e) {
Assert.AreEqual ("array", e.ParamName, "ParamName must be \"array\"");
}
try
{
stackInt.CopyTo(arr, -1);
Assert.Fail ("Should throw an ArgumentOutOfRangeException");
}
catch (ArgumentOutOfRangeException e)
{
Assert.AreEqual ("index", e.ParamName, "ParamName must be \"index\"");
}
try
{
stackInt.CopyTo(arrMulti = new int[1, 1], 1);
Assert.Fail ("Should throw an ArgumentException");
}
catch (ArgumentException) {}
try
{
stackInt.CopyTo(arr = new int[2], 3);
Assert.Fail ("Should throw an ArgumentException");
}
catch (ArgumentException) {}
try
{
stackInt.CopyTo(arr = new int[3], 2);
Assert.Fail ("Should throw an ArgumentException");
}
catch (ArgumentException) {}
try
{
stackInt.CopyTo(arr = new int[2], 3);
Assert.Fail ("Should throw an ArgumentException");
}
catch (ArgumentException) {}
arr = new int[stackInt.Count];
stackInt.CopyTo(arr, 0);
int j = 4;
for (int i = 0; i < 4; i++)
{
Assert.AreEqual (arr[i], j--);
}
}
[Test]
public void TestSyncronized()
{
Stack syncStack = Stack.Synchronized(stackInt);
syncStack.Push(5);
for (int i = 5; i >= 0; i--)
Assert.AreEqual (syncStack.Pop(), i);
}
[Test]
public void TestPushPeekPop()
{
stackInt.Pop();
int topVal = (int)stackInt.Peek();
Assert.AreEqual (topVal, 3);
Assert.AreEqual (stackInt.Count, 4);
Assert.AreEqual (stackInt.Pop(), topVal);
Assert.AreEqual (stackInt.Pop(), 2);
Stack test = new Stack();
test.Push(null);
Assert.AreEqual (test.Pop(), null);
}
[Test]
public void TestPop()
{
for (int i = 4; i >= 0; i--)
{
Assert.AreEqual (stackInt.Pop(), i);
}
try {
stackInt.Pop();
Assert.Fail ("must throw InvalidOperationException");
} catch (InvalidOperationException){
}
}
[Test]
public void TestToArray()
{
object[] arr = stackInt.ToArray();
Assert.AreEqual (arr.Length, stackInt.Count);
for (int i = 0; i < 5; i++)
Assert.AreEqual (stackInt.Pop(), arr[i]);
}
[Test]
public void TestResize()
{
Stack myStack = new Stack(20);
for (int i = 0; i < 500; i++)
{
myStack.Push(i);
Assert.AreEqual (i+1, myStack.Count, "push count test");
}
for (int i = 499; i >= 0; i--)
{
Assert.AreEqual (myStack.Pop(), i);
Assert.AreEqual (i, myStack.Count, "pop count test");
}
}
[Test]
public void TestEmptyCopyTo ()
{
Stack stack = new Stack ();
string [] arr = new string [0];
stack.CopyTo (arr, 0);
}
[Test]
public void TestICollectionCtorUsesEnum ()
{
BitArray x = new BitArray (10, true);
Stack s = new Stack (x);
}
[SetUp]
protected void SetUp()
{
stack1 = new Stack();
stackInt = new Stack();
for (int i = 0; i < 5; i++)
stackInt.Push(i);
}
}
}
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