public void Search_ShouldReturnCorrectHashSet(HashSet <string> noSignWords, HashSet <string> plusSignWords,
HashSet <string> minusSignWords, HashSet <string> expected)
{
//Arrange
_hashInvertedIndex.GetDocsContain("hello").Returns(new HashSet <string>()
{
"1", "2", "3"
});
_hashInvertedIndex.GetDocsContain("dad").Returns(new HashSet <string>()
{
"1", "3", "5"
});
_hashInvertedIndex.GetDocsContain("bank").Returns(new HashSet <string>());
_hashInvertedIndex.GetDocsContain("car").Returns(new HashSet <string>()
{
"1", "2", "6"
});
_hashInvertedIndex.GetDocsContain("evil").Returns(new HashSet <string>()
{
"3", "8", "4"
});
//Act
var result = _sut.Search(new DocContainer()
{
NoSignWords = noSignWords, PlusSignWords = plusSignWords, MinusSignWords = minusSignWords
});
//Assert
Assert.Equal(expected, result);
}
private IEnumerable <string> GetNoSignDocs(IEnumerable <string> noSignWords)
{
return(noSignWords.Select(x => _hashInvertedIndex.GetDocsContain(x))
.Aggregate((a, b) => a.Intersect(b).ToHashSet()));
}