public void GetPostingsTest_OrQueryWithEmptyComponents_ReturnsEmpty()
{
OrQuery orQuery = new OrQuery(new List <IQueryComponent>());
IList <Posting> result = orQuery.GetPostings(index, processor);
result.Should().BeEmpty("because there's no component in OrQuery");
}
public void GetPostingsTest_OrQueryExist_ReturnsPostings()
{
//Some postings overlap
OrQuery orQuery1 = new OrQuery(new List <IQueryComponent> {
new TermLiteral("snow"),
new TermLiteral("mystery")
});
IList <Posting> result = orQuery1.GetPostings(index, processor);
result.Should().HaveCount(5, "because there are 5 files that contain 'snow' or 'mystery'");
Console.Write(orQuery1.ToString() + "\t");
PrintPostingResult(result);
//All postings overlaps
OrQuery orQuery2 = new OrQuery(new List <IQueryComponent> {
new TermLiteral("full"),
new TermLiteral("of")
});
result = orQuery2.GetPostings(index, processor);
result.Should().HaveCount(2, "because there are 2 files that contain 'full' or 'of'");
Console.Write(orQuery2.ToString() + "\t");
PrintPostingResult(result);
//One component returns empty posting list
OrQuery orQuery3 = new OrQuery(new List <IQueryComponent> {
new TermLiteral("full"),
new TermLiteral("zebra") //no posting for this
});
result = orQuery3.GetPostings(index, processor);
result.Should().HaveCount(2, "because there are 2 files with 'full' and no file with 'zebra'");
Console.Write(orQuery3.ToString() + "\t");
PrintPostingResult(result);
}
public void GetPostingsTest_OrQueryNotExist_ReturnsEmpty()
{
OrQuery orQuery = new OrQuery(new List <IQueryComponent> {
new TermLiteral("running"),
new TermLiteral("zebra")
});
IList <Posting> result = orQuery.GetPostings(index, processor);
result.Should().BeEmpty("because there is no file with 'running' or 'zebra'");
Console.Write(orQuery.ToString() + "\t");
PrintPostingResult(result);
}