public void InvalidNThrowsExceptionTest()
{
// Arrange
var words = StringList("a");
var wordFrequencies = new WordFrequencies(words);
var numToFind = 0;
// Act
wordFrequencies.GetNthMostOccurring(numToFind);
}
public void OrderingSkipsValuesTest()
{
// Arrange
var words = StringList("a", "a", "b", "b", "c");
var wordFrequencies = new WordFrequencies(words);
var expected = StringList("c");
var numToFind = 3;
// Act
var actual = wordFrequencies.GetNthMostOccurring(numToFind);
// Assert
AssertListsAreEqual(expected, actual);
}
public void TwoWordsSameOccurrencesAreSortedTest()
{
// Arrange
var words = StringList("a", "a", "b", "b");
var wordFrequencies = new WordFrequencies(words);
var expected = StringList("a", "b");
var numToFind = 1;
// Act
var actual = wordFrequencies.GetNthMostOccurring(numToFind);
// Assert
AssertListsAreEqual(expected, actual);
}
public void SingleWordWithMultipleOccurrencesTest()
{
// Arrange
var words = StringList("a", "a");
var wordFrequencies = new WordFrequencies(words);
var expected = StringList("a");
var numToFind = 1;
// Act
var actual = wordFrequencies.GetNthMostOccurring(numToFind);
// Assert
AssertListsAreEqual(expected, actual);
}
public void InBetweenFrequenciesReturnsNothingTest()
{
// Arrange
var words = StringList("a", "a", "b", "b", "c");
var wordFrequencies = new WordFrequencies(words);
List <string> expected = null;
var numToFind = 2;
// Act
var actual = wordFrequencies.GetNthMostOccurring(numToFind);
// Assert
AssertListsAreEqual(expected, actual);
}