public void GivenAB_ReturnsPairWithKeyAMappedToAB()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings("ab");
Assert.That(result.SingleOrDefault(x => x.Key == "a").Value, Is.EqualTo("ab"));
}
public void GivenA_Returns1KeyValuePair()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings("a");
Assert.That(result.Count, Is.EqualTo(1));
}
public void GivenAB_ReturnsPairWithKeyAB()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings("ab");
Assert.That(result.SingleOrDefault(x => x.Key == "ab"), Is.Not.Null);
}
public void GivenAB_Returns2Pairs()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings("ab");
Assert.That(result.Count, Is.EqualTo(2));
}
public void GivenA_ReturnsWithValueA()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings("a");
Assert.That(result.Single().Value, Is.EqualTo("a"));
}
public void GivenWhitespace_ReturnsEmptyList()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings(" \t \n ");
Assert.That(result, Is.Empty);
}
public void GivenNull_ThrowsArgumentNullException()
{
var preprocessor = new DefaultStationPreprocessor();
Assert.Throws<ArgumentNullException>(() => preprocessor.GetStationBeginnings(null));
}
public void GivenEmptyString_ReturnsEmptyList()
{
var preprocessor = new DefaultStationPreprocessor();
var result = preprocessor.GetStationBeginnings(string.Empty);
Assert.That(result, Is.Empty);
}