public void Blank_NewAutoNoCollide()
{
var f = new NodeFactory();
var g = f.BlankSelf();
var n1 = f.Blank(g, "auto#1");
var n2 = f.Blank(g);
Assert.IsFalse(n1 == n2, "Auto blank not same if label matches");
}
public void Blank_ReuseAuto()
{
var f = new NodeFactory();
var g = f.BlankSelf();
var n1 = f.Blank(g);
var n2 = f.Blank(g, n1.Value.Label);
Assert.AreEqual(n1, n2, "matching auto matches node");
}
public void BlankNodes()
{
var f = new NodeFactory();
var g = f.BlankSelf();
var labeled = f.Blank(g, "anon");
Assert.IsTrue(labeled.GetValueString().EndsWith("anon"), "Expect blank with label.");
var auto = f.Blank(g);
Assert.IsTrue(auto.GetValueString().Contains(NodeFactory.BlankNodePrefix),
"Has standard prefix.");
Assert.IsTrue(f.Blank(g, "_:xxA").GetValueString().EndsWith("xxA"), "Blank node with label");
Assert.IsTrue(f.Blank(g, $"{NodeFactory.BlankNodePrefix}ABc")
.GetValueString().EndsWith("ABc"), "blank node with full prefix");
}
public void SubjectCanBeUriOrBlank()
{
var f = new NodeFactory();
var g = f.BlankSelf();
var s1 = f.Blank(g, "_:node1");
Assert.AreEqual("node1", s1.Value.Label);
var s2 = f.Blank(g);
Assert.IsNotNull(s2.Value.Label, "generates new label");
var s3 = f.Uri("x:/someone#here");
Assert.IsNull(s3.Value.Label);
Assert.IsNull(s3.Value.Scope);
Assert.ThrowsException <InvalidUri>(() => f.Uri("23:/path"));
}
public void BlankNode_ScopeToGraph()
{
var f = new NodeFactory();
//blanks in a scope can be found via same label.
// but different scope, with same label in not the same blank.
var g1 = f.BlankSelf();
var g2 = f.BlankSelf();
var b1 = f.Blank(g1, "A");
var b2 = f.Blank(g2, "A");
Assert.IsFalse(b1 == b2);
//same scope and label will match.
var b3 = f.Blank(g1, "A");
Assert.AreEqual(b1, b3);
}
public void UsingBlankOrUri()
{
var f = new NodeFactory();
//a uri
var uri = f.Uri("a:uri");
//a blank
var blank = f.Blank(uri, "label");
//blank is scoped to uri
Assert.AreEqual(uri, blank.Scope);
//cannot create a uri node as object.
var uri2 = new Uri("https://duckduckgo.com/");
Assert.ThrowsException <UriObjectNodeNotSupported>(() => f.New(uri2));
}
public void AddWithUpDownAndLet()
{
var f = new NodeFactory();
var rdf = new RdfData(f);
var gId = f.BlankSelf("g1");
var g = rdf.GetGraph(gId).Update;
// _:1 x:p1 "1".
g.ForBlank("1", out _)
.With(f.Uri("x:p1"))
.Add(f.New("1"))
// _:1 x:p2 "123"
.Then().With(f.Uri("x:p2")).Add(f.New("123"))
// _:1 x:p3 _:2
// _:2 x:p3 "fred"
.Then().With(f.Uri("x:p3")).To(f.Blank(gId))
.With(f.Uri("x:p3")).Add(f.New("fred"))
//get ref to _:2
.Then().Let(out _);
}
