public void ParserShouldParseMultiExpressionWithCustomMethod()
{
const string targetPath = "Text";
const string sourcePath1 = "SourceText1";
const string sourcePath2 = "SourceText2";
const string methodName = "TestMethod";
const string binding = "Text $TestMethod(SourceText1, SourceText2).IntProperty";
var target = new object();
var args = new object[] { "tset", 1 };
var sourceModel = new BindingSourceModel { IntProperty = int.MaxValue };
var provider = new BindingProvider();
var resolver = new BindingResourceResolver();
BindingServiceProvider.ResourceResolver = resolver;
var method = new BindingResourceMethod((list, objects, c) =>
{
objects[0].ShouldEqual(args[0]);
objects[1].ShouldEqual(args[1]);
return sourceModel;
}, typeof(BindingSourceModel));
resolver.AddMethod(methodName, method, true);
IBindingParser bindingParser = CreateBindingParser(bindingProvider: provider);
var context = new BindingBuilder(bindingParser.Parse(binding, EmptyContext, target, null).Single());
IBindingPath path = context.GetData(BindingBuilderConstants.TargetPath);
path.Path.ShouldEqual(targetPath);
var expression = context.GetData(BindingBuilderConstants.MultiExpression);
expression(context, args).ShouldEqual(sourceModel.IntProperty);
var sources = context.GetData(BindingBuilderConstants.Sources);
BindingSourceShouldBeValidDataContext(target, sources[0].Invoke(context), sourcePath1);
BindingSourceShouldBeValidDataContext(target, sources[1].Invoke(context), sourcePath2);
}
public void ParserShouldParseMultiExpressionWithOneTimeScope()
{
const string targetPath = "Text";
const string sourcePath1 = "SourceText1";
const string sourcePath2 = "SourceText2";
const string sourcePath3 = "SourceText3";
const string methodName = "TestMethod";
const string binding = "Text $OneTime($TestMethod(SourceText1, SourceText2).IntProperty) + SourceText3";
const int firstValue = -1;
int executionCount = 0;
var target = new object();
var args = new object[] { "tset", 1, 3 };
var sourceModel = new BindingSourceModel { IntProperty = firstValue };
var provider = new BindingProvider();
var resolver = new BindingResourceResolver();
BindingServiceProvider.ResourceResolver = resolver;
var method = new BindingResourceMethod((list, objects, c) =>
{
++executionCount;
objects[0].ShouldEqual(args[0]);
objects[1].ShouldEqual(args[1]);
return sourceModel;
}, typeof(BindingSourceModel));
resolver.AddMethod(methodName, method, true);
IBindingParser bindingParser = CreateBindingParser(bindingProvider: provider);
var context = new BindingBuilder(bindingParser.Parse(binding, EmptyContext, target, null).Single());
IBindingPath path = context.GetData(BindingBuilderConstants.TargetPath);
path.Path.ShouldEqual(targetPath);
var expression = context.GetData(BindingBuilderConstants.MultiExpression);
expression(context, args).ShouldEqual(firstValue + 3);
sourceModel.IntProperty = int.MinValue;
args[2] = 5;
expression(context, args).ShouldEqual(firstValue + 5);
args[2] = 6;
expression(context, args).ShouldEqual(firstValue + 6);
executionCount.ShouldEqual(1);
var sources = context.GetData(BindingBuilderConstants.Sources);
BindingSourceShouldBeValidDataContext(target, sources[0].Invoke(context), sourcePath1);
BindingSourceShouldBeValidDataContext(target, sources[1].Invoke(context), sourcePath2);
BindingSourceShouldBeValidDataContext(target, sources[2].Invoke(context), sourcePath3);
}