public void RewriteObjectTest()
{
var instance = new SampleClassWithProperties
{
DefaultProperty = new List <int> {
100, 101
},
AlternativeProperty = new List <int> {
200, 201
}
};
IndexExpression expr = instance.DefaultIndexExpression;
MemberExpression newProperty = Expression.Property(Expression.Constant(instance),
typeof(SampleClassWithProperties).GetProperty(nameof(instance.AlternativeProperty)));
var visitor = new IndexVisitor(expr, newProperty, expr.Arguments.ToArray());
IndexExpression actual = (IndexExpression)visitor.Visit(expr);
IndexExpression expected = Expression.MakeIndex(newProperty, expr.Indexer, expr.Arguments);
// Object of ExpressionIndex replaced via Rewrite method call.
IndexExpressionHelpers.AssertEqual(expected, actual);
// Invoke to check expression.
IndexExpressionHelpers.AssertInvokeCorrect(100, expr);
IndexExpressionHelpers.AssertInvokeCorrect(200, actual);
}
public void RewriteArgumentsTest()
{
var instance = new SampleClassWithProperties {DefaultProperty = new List<int> {100, 101}};
IndexExpression expr = instance.DefaultIndexExpression;
Expression[] newArguments = {Expression.Constant(1)};
var visitor = new IndexVisitor(expr, expr.Object, newArguments);
IndexExpression expected = Expression.MakeIndex(expr.Object, expr.Indexer, newArguments);
var actual = (IndexExpression) visitor.Visit(expr);
IndexExpressionHelpers.AssertEqual(expected, actual);
// Invoke to check expression.
IndexExpressionHelpers.AssertInvokeCorrect(100, expr);
IndexExpressionHelpers.AssertInvokeCorrect(101, actual);
}
public void RewriteArgumentsTest()
{
var instance = new SampleClassWithProperties {
DefaultProperty = new List <int> {
100, 101
}
};
IndexExpression expr = instance.DefaultIndexExpression;
Expression[] newArguments = { Expression.Constant(1) };
var visitor = new IndexVisitor(expr, expr.Object, newArguments);
IndexExpression expected = Expression.MakeIndex(expr.Object, expr.Indexer, newArguments);
var actual = (IndexExpression)visitor.Visit(expr);
IndexExpressionHelpers.AssertEqual(expected, actual);
// Invoke to check expression.
IndexExpressionHelpers.AssertInvokeCorrect(100, expr);
IndexExpressionHelpers.AssertInvokeCorrect(101, actual);
}
public void RewriteObjectTest()
{
var instance = new SampleClassWithProperties
{
DefaultProperty = new List<int> { 100, 101 },
AlternativeProperty = new List<int> { 200, 201 }
};
IndexExpression expr = instance.DefaultIndexExpression;
MemberExpression newProperty = Expression.Property(Expression.Constant(instance),
typeof(SampleClassWithProperties).GetProperty(nameof(instance.AlternativeProperty)));
var visitor = new IndexVisitor(expr, newProperty, expr.Arguments.ToArray());
IndexExpression actual = (IndexExpression)visitor.Visit(expr);
IndexExpression expected = Expression.MakeIndex(newProperty, expr.Indexer, expr.Arguments);
// Object of ExpressionIndex replaced via Rewrite method call.
IndexExpressionHelpers.AssertEqual(expected, actual);
// Invoke to check expression.
IndexExpressionHelpers.AssertInvokeCorrect(100, expr);
IndexExpressionHelpers.AssertInvokeCorrect(200, actual);
}