public void Monitor_TryEnter_Invalid()
{
bool lockTaken = false;
var obj = new object();
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, ref lockTaken));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, 1));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, 1, ref lockTaken));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, TimeSpan.Zero));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, TimeSpan.Zero, ref lockTaken));
//AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecondsTimeout", () => Monitor.TryEnter(null, -1));
//AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecondsTimeout", () => Monitor.TryEnter(null, -1, ref lockTaken));
//AssertExtensions.Throws<ArgumentOutOfRangeException>("timeout", () => Monitor.TryEnter(null, TimeSpan.FromMilliseconds(-1)));
//AssertExtensions.Throws<ArgumentOutOfRangeException>("timeout", () => Monitor.TryEnter(null, TimeSpan.FromMilliseconds(-1), ref lockTaken));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, -1));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, -1, ref lockTaken));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, TimeSpan.FromMilliseconds(-1)));
AssertExtensions.Throws <ArgumentNullException>("obj", () => Monitor.TryEnter(null, TimeSpan.FromMilliseconds(-1), ref lockTaken));
lockTaken = true;
AssertExtensions.Throws <ArgumentException>("lockTaken", () => Monitor.TryEnter(obj, ref lockTaken));
lockTaken = true;
AssertExtensions.Throws <ArgumentException>("lockTaken", () => Monitor.TryEnter(obj, 0, ref lockTaken));
lockTaken = true;
AssertExtensions.Throws <ArgumentException>("lockTaken", () => Monitor.TryEnter(obj, TimeSpan.Zero, ref lockTaken));
}
public void Monitor_TryEnter_SetsLockTaken()
{
bool lockTaken = false;
var obj = new object();
Monitor.TryEnter(obj, ref lockTaken);
Assert.IsTrue(lockTaken);
Monitor.Exit(obj);
// The documentation does not specifies that lockTaken variable is
// set to false after Exit is called
//Assert.IsFalse(lockTaken);
}
public void Monitor_BasicRecursion()
{
var obj = new object();
Assert.IsTrue(Monitor.TryEnter(obj));
Assert.IsTrue(Monitor.TryEnter(obj));
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Enter(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
Monitor.Exit(obj);
//Assert.IsFalse(Monitor.IsEntered(obj));
}
public void Monitor_DeepRecursion()
{
var obj = new object();
var hc = obj.GetHashCode();
// reduced from "(long)int.MaxValue + 2;" to something that will return in a more meaningful time
const int limit = 10000;
for (var i = 0L; i < limit; i++)
{
Assert.IsTrue(Monitor.TryEnter(obj));
}
for (var j = 0L; j < (limit - 1); j++)
{
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
}
Monitor.Exit(obj);
//Assert.IsTrue(Monitor.IsEntered(obj));
}
