public virtual void testOnceTopDownIsLeaf()
{
IVisitor isLeaf = new All(new Fail());
OnceTopDown onceTopDown = new OnceTopDown(logVisitor(isLeaf));
Logger expected = new Logger(isLeaf, new IVisitable[]{n0,n1,n11});
try
{
IVisitable nodeReturned = onceTopDown.visit(n0);
Assertion.AssertEquals("visit trace",expected, logger);
Assertion.AssertEquals("return value",n0, nodeReturned);
}
catch (VisitFailure)
{
Assertion.Fail("VisitFailure should not occur!");
}
}
public virtual void testOnceTopDownFail()
{
IVisitor f = new Fail();
OnceTopDown onceTopDown = new OnceTopDown(logVisitor(f));
Logger expected = new Logger(f, new IVisitable[]{n0,n1,n11,n12,n2});
IVisitable nodeReturned = null;
try
{
nodeReturned = onceTopDown.visit(n0);
Assertion.Fail("VisitFailure should have occured!");
}
catch (VisitFailure)
{
Assertion.AssertEquals("visit trace",expected, logger);
Assertion.AssertNull("return value",nodeReturned);
}
}
