public void Test_to_fahrenheit_from_celsius_with_invalid_parameter_throws_exception(int input)
{
// Arrange.
var inputCelsius = new CelsiusInt(input);
// Act.
var result = Assert.Throws <ArgumentOutOfRangeException>(() => inputCelsius.ToFahrenheit());
// Assert.
result.Message.Should().Contain("Value out of range for type.");
}
public void Test_to_fahrenheit_from_celsius_returns_correct_value()
{
// Arrange.
const int expected = 54;
var input = new CelsiusInt(12);
// Act.
var result = input.ToFahrenheit();
// Assert.
result.Should().Be(expected);
}