public void ReplaceIfNull()
{
var bd1 = new BooleanDisposable();
var bd2 = new BooleanDisposable();
var field = default(IDisposable);
Assert.True(DisposableHelper.ReplaceIfNull(ref field, bd1));
Assert.False(bd1.IsDisposed());
Assert.False(bd2.IsDisposed());
Assert.False(DisposableHelper.ReplaceIfNull(ref field, bd2));
Assert.False(bd1.IsDisposed());
Assert.False(bd2.IsDisposed());
Assert.True(DisposableHelper.Dispose(ref field));
Assert.True(bd1.IsDisposed());
Assert.False(bd2.IsDisposed());
var bd3 = new BooleanDisposable();
Assert.False(DisposableHelper.SetIfNull(ref field, bd3));
Assert.True(bd3.IsDisposed());
}
public void SetIfNull_Null()
{
try
{
var field = default(IDisposable);
DisposableHelper.SetIfNull(ref field, null);
Assert.Fail("Should have thrown");
}
catch (ArgumentNullException)
{
// expected
}
}