/// <summary>
/// Gets the day with the least change from the file / data provided.
/// </summary>
/// <param name="fileLocation"> The location of the file that contains our data. </param>
/// <returns>
/// The day entry in the file for the day that has the least temperature change.
/// </returns>
public int GetDayWithLeastChange(string fileLocation)
{
// Contract requirements.
if (string.IsNullOrWhiteSpace(fileLocation))
{
throw new ArgumentNullException(nameof(fileLocation), "The file location can not be null.");
}
var fileData = _fileReader.GetWeatherData(fileLocation);
int result = _weatherData.GetDayOfLeastTemperatureChange(fileData);
return(result);
}
public void Test_get_day_with_valid_input_and_data_returns_expected_day()
{
// Arrange.
const int expected = 6;
const string input = "fullFile";
_reader.GetWeatherData(Arg.Any <string>()).Returns(new List <Weather>());
_notify.GetDayOfLeastTemperatureChange(Arg.Any <List <Weather> >()).Returns(6);
// Act.
var actual = _weatherDataManager.GetDayWithLeastChange(input);
// Assert.
actual.Should().Be(expected);
}