public void CheckSingleUseArgs()
{
// TestEvent2
var handled = false;
var sender = new object();
EventHandler <TestEventArgs> handler = (x, args) => { handled = true; };
var argCount = 0;
TestEvent2.SafeInvoke(nameof(TestEvent2), sender, () =>
{
++argCount;
return(new TestEventArgs());
}, ArgsUsageKind.UniqueInstance);
Assert.Equal(0, argCount);
TestEvent2 += handler;
TestEvent2.SafeInvoke(nameof(TestEvent2), sender, () =>
{
++argCount;
return(new TestEventArgs());
}, ArgsUsageKind.UniqueInstance);
Assert.True(handled);
handled = false;
TestEvent2.SafeInvoke(nameof(TestEvent2), sender, () =>
{
++argCount;
return(new TestEventArgs());
}, ArgsUsageKind.UniqueInstance);
TestEvent2 -= handler;
Assert.Equal(2, argCount);
}
