public void For2SameInputEvents_ShouldExecuteDataParserOnce()
{
var testScheduler = new TestScheduler();
//arrange
var target = new SerialPortDevice(_serialPortMock.Object, _dataParserMock.Object, testScheduler);
//act
target.ObserveDataReceived(10d);
//input events
_serialPortMock.Raise(port => port.DataReceived += null, "Test message 1");
_serialPortMock.Raise(port => port.DataReceived += null, "Test message 1");
//assert
_dataParserMock.Verify(x => x.Parse(It.IsAny <string>()), Times.Once);
}
public void ForNoInputFor5sec_ShouldNotThrowTimeoutException()
{
var testScheduler = new TestScheduler();
//arrange
var target = new SerialPortDevice(_serialPortMock.Object, _dataParserMock.Object, testScheduler);
//act && assert
try
{
target.ObserveDataReceived(10d);
//input event
_serialPortMock.Raise(port => port.DataReceived += null, "Test message");
//wait 5 sec - less than timeout limit
testScheduler.AdvanceBy(TimeSpan.FromSeconds(5).Ticks);
}
catch (Exception)
{
Assert.Fail("Exception was thrown but it shouldn't");
}
}
public void ForNoInputFor20sec_ShouldThrowTimeoutException()
{
var testScheduler = new TestScheduler();
//arrange
var target = new SerialPortDevice(_serialPortMock.Object, _dataParserMock.Object, testScheduler);
//act && assert
try
{
target.ObserveDataReceived(10d);
//input event
_serialPortMock.Raise(port => port.DataReceived += null, "Test message");
//wait 20 sec. - more than timeout limit
testScheduler.AdvanceBy(TimeSpan.FromSeconds(20).Ticks);
Assert.Fail("No exception was thrown");
}
catch (Exception ex)
{
Assert.IsTrue(ex is TimeoutException);
}
}
