public void VisitInvocation_Unchanged()
{
var expression = ExpressionInstanceCreator.CreateInvokeWithArguments();
var argument = expression.Arguments.Single();
Expect.Call(VisitorMock.Visit(expression.Expression)).Return(expression.Expression);
Expect.Call(VisitorMock.Visit(argument)).Return(argument);
var result = (InvocationExpression)InvokeAndCheckVisit("VisitInvocation", expression);
Assert.That(result, Is.SameAs(expression));
}
public void VisitInvocation_ChangedArguments()
{
var expression = ExpressionInstanceCreator.CreateInvokeWithArguments();
var argument = expression.Arguments.Single();
Expression newArgument = Expression.Constant(214578);
Expect.Call(VisitorMock.Visit(expression.Expression)).Return(expression.Expression);
Expect.Call(VisitorMock.Visit(argument)).Return(newArgument);
var result = (InvocationExpression)InvokeAndCheckVisit("VisitInvocation", expression);
Assert.That(result, Is.Not.SameAs(expression));
Assert.That(result.NodeType, Is.EqualTo(ExpressionType.Invoke));
Assert.That(result.Arguments, Is.EqualTo(new[] { newArgument }));
Assert.That(result.Expression, Is.SameAs(expression.Expression));
}
public void VisitInvocation_ChangedObject()
{
var expression = ExpressionInstanceCreator.CreateInvokeWithArguments();
var argument = expression.Arguments.Single();
Expression newExpression = Expression.Lambda(Expression.Constant(1), Expression.Parameter(typeof(int), "i"));
Expect.Call(VisitorMock.Visit(expression.Expression)).Return(newExpression);
Expect.Call(VisitorMock.Visit(argument)).Return(argument);
var result = (InvocationExpression)InvokeAndCheckVisit("VisitInvocation", expression);
Assert.That(result, Is.Not.SameAs(expression));
Assert.That(result.NodeType, Is.EqualTo(ExpressionType.Invoke));
Assert.That(result.Expression, Is.SameAs(newExpression));
Assert.That(result.Arguments, Is.SameAs(expression.Arguments));
}
