public void TestSiblingsBeforeSelf_MissingChild() {
var a = new VariableUse() { Name = "a" };
var plus = new OperatorUse() { Text = "+" };
var foo = new VariableUse() { Name = "foo" };
var times = new OperatorUse() { Text = "*" };
var b = new VariableUse() { Name = "b" };
var exp = new Expression();
exp.AddComponents(new Expression[] { a, plus, foo, times, b });
var dot = new OperatorUse {
Text = ".",
ParentExpression = exp
};
Assert.Throws<InvalidOperationException>(() => dot.GetSiblingsBeforeSelf());
}
public void TestSiblingsBeforeSelf() {
var a = new VariableUse() { Name = "a" };
var plus = new OperatorUse() { Text = "+" };
var foo = new VariableUse() { Name = "foo" };
var times = new OperatorUse() { Text = "*" };
var b = new VariableUse() { Name = "b" };
var exp = new Expression();
exp.AddComponents(new Expression[] { a, plus, foo, times, b });
var fooSiblings = foo.GetSiblingsBeforeSelf().ToList();
Assert.AreEqual(2, fooSiblings.Count());
Assert.AreSame(a, fooSiblings[0]);
Assert.AreSame(plus, fooSiblings[1]);
var aSiblings = a.GetSiblingsBeforeSelf().ToList();
Assert.AreEqual(0, aSiblings.Count());
}
public void TestSiblingsAfterSelf() {
var a = new VariableUse() { Name = "a" };
var plus = new OperatorUse() { Text = "+" };
var foo = new VariableUse() { Name = "foo" };
var times = new OperatorUse() { Text = "*" };
var b = new VariableUse() { Name = "b" };
var exp = new Expression();
exp.AddComponents(new Expression[] { a, plus, foo, times, b });
var plusSiblings = plus.GetSiblingsAfterSelf().ToList();
Assert.AreEqual(3, plusSiblings.Count());
Assert.AreSame(foo, plusSiblings[0]);
Assert.AreSame(times, plusSiblings[1]);
Assert.AreSame(b, plusSiblings[2]);
var bSiblings = b.GetSiblingsAfterSelf().ToList();
Assert.AreEqual(0, bSiblings.Count());
}
