public void ModelInformation()
{
var stream = new TestStream();
using var device = new CyberCard(stream);
// survive without data
Assert.Null(device.GetDeviceModel());
Assert.Null(device.GetDeviceFirmware());
Assert.Null(device.GetDeviceSerial());
Assert.Null(device.GetDeviceManufacturer());
Assert.Equal("P4\rP4\rP4\rP4\r", Encoding.ASCII.GetString(stream.ToWrittenArray())); // check we tried for each
// now we have data
stream.SetupRead(Encoding.ASCII.GetBytes("#OR700LCDRM1U,BFE7103_8S1,000000000000,CyberPower\r"));
Assert.Equal("OR700LCDRM1U", device.GetDeviceModel());
Assert.Equal("BFE7103_8S1", device.GetDeviceFirmware());
Assert.Equal("", device.GetDeviceSerial()); // ignore all 0's serial
Assert.Equal("CyberPower", device.GetDeviceManufacturer());
Assert.Equal("P4\rP4\rP4\rP4\rP4\r", Encoding.ASCII.GetString(stream.ToWrittenArray())); // check we tried only once more
// subsequent read goes from cache
Assert.Equal("OR700LCDRM1U", device.GetDeviceModel());
Assert.Equal("BFE7103_8S1", device.GetDeviceFirmware());
Assert.Equal("", device.GetDeviceSerial());
Assert.Equal("CyberPower", device.GetDeviceManufacturer());
Assert.Equal("P4\rP4\rP4\rP4\rP4\r", Encoding.ASCII.GetString(stream.ToWrittenArray())); // no new reads
}
