public void ThrowsExceptionWhenFailingToCountMessages()
{
// Arrange
var manager = new SmsManager(_serialPort);
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("\r\nOK\r\n");
manager._receiveNow.Set();
});
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT+CMGF=1\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("\r\nOK\r\n");
manager._receiveNow.Set();
});
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT+CPMS?\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("\r\nERROR\r\n");
manager._receiveNow.Set();
});
// Act
// Assert
Assert.That(() => manager.CountSMSmessages(_serialPort),
Throws.Exception.TypeOf <ApplicationException>()
.With.Message.EqualTo("No success message was received."));
}
public void SuccessfullyCountsMessages()
{
// READ THIS: http://tech.findmypast.com/dont-mock-what-you-dont-own/
// Arrange
var manager = new SmsManager(_serialPort);
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("\r\nOK\r\n");
manager._receiveNow.Set();
});
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT+CMGF=1\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("\r\nOK\r\n");
manager._receiveNow.Set();
});
_serialPort.When(sp => sp.Write(Arg.Is <string>(a => a == "AT+CPMS?\r"))).Do(c =>
{
_serialPort.ReadExisting().Returns("+CPMS: \"SM\",4,20,\"SM\",0,20,\"ME\",186,1000\r\n\r\nOK\r\n");
manager._receiveNow.Set();
});
// Act
int count = manager.CountSMSmessages(_serialPort);
// Assert
Assert.AreEqual(4, count);
// Note that CountSMSmessages() ignores messages not stored on SIM card.
}