public void TestMethod1()
{
var parser = new ExpressionParser(new JObject(), logger)
.AddRegex().AddSplit();
parser.Functions["add"] = (document, arguments) =>
arguments.Aggregate(0.0, (acc, argument) => acc + argument.ToObject <double>());
Assert.AreEqual(4.0, parser.Evaluate("[add(2,2)]"));
Assert.AreEqual(7.0, parser.Evaluate("[add(2,2,3)]"));
Assert.AreEqual(3.0, parser.Evaluate("[add(2,2,-1)]"));
Assert.AreEqual(4.0, parser.Evaluate("[add(2,2,0,0)]"));
var stdout = File.ReadAllText("stdout.txt");
var test = parser.Evaluate("[split(regex(\"testfoo\",\"test(.*)\",\"$1\"))]");
Assert.AreEqual("[\"foo\"]", test.ToString(Newtonsoft.Json.Formatting.None));
parser.Functions["stdout"] = (document, arguments) => stdout;
parser.Functions["numbers"] = (document, arguments) => new JArray(arguments.SelectMany(c => c).Select(c => double.Parse(c.ToString())));
var AABB = parser.Evaluate("[numbers(split(regex(stdout(2),\"\\('AABB: ', (.*?)\\)\",\"$1\")))]");
CollectionAssert.AreEqual(new[] { 480000, 6150000, -1580, 530000, 6200000, 755 }, AABB.ToObject <int[]>());
parser.AddConcat();
Assert.AreEqual("foobar", parser.Evaluate("[concat(\"foo\",\"bar\")]"));
Assert.AreEqual("foobar", parser.Evaluate("[concat('foo',\"bar\")]"));
parser.Functions["number"] = (document, arguments) => arguments.Select(c => double.Parse(c.ToString())).FirstOrDefault();
Assert.AreEqual(16.0, parser.Evaluate("[number(regex(stdout(0),\"\\('Suggested number of tiles: ', (.*?)\\)\",\"$1\"))]"));
Assert.AreEqual(11.0, parser.Evaluate("[number(regex(stdout(0),\"\\('Suggested Potree-OctTree number of levels: ', (.*?)\\)\",\"$1\"))]"));
Assert.AreEqual(205.0, parser.Evaluate("[number(regex(stdout(0),\"\\('Suggested Potree-OctTree spacing: ', (.*?)\\)\",\"$1\"))]"));
}