public void Creates_computation_chain_with_limited_scope()
{
var codeAsText = File.ReadAllText(@"SyntaxAnalyserExamples/TestFunctions.cs");
var syntaxTree = SyntaxOperations.Parse(codeAsText);
var semanticModel = SemanticOperations.GetSemanticModel(syntaxTree);
var methodSyntax = SyntaxOperations
.FindMethodsOfClass(syntaxTree, nameof(TestFunctions), nameof(TestFunctions.ProcessInt32Parameter))
.Value
.Single();
var methodAnalysis = MethodBlockAnalysis.FromSemanticModel(methodSyntax, semanticModel);
var returnSyntax = methodAnalysis.BodyBlock.DescendantNodes().OfType <ReturnStatementSyntax>().Single();
var identSyntax = SyntaxOperations.GetVariable(returnSyntax);
var doubleIncrementedIdentSyntax = SyntaxOperations.GetDelarationOfVariable(methodAnalysis.BodyBlock, "doubledIncremented");
var searchSpan = TextSpan.FromBounds(doubleIncrementedIdentSyntax.SpanStart, returnSyntax.Span.End);
var chainHead = ComputationGraph.FromReturnStatement(returnSyntax, methodAnalysis, searchSpan).Item1.A;
var sqrtDoubledIncrementedInt = _Assert_ReturnStatement(chainHead).A;
var localDecl_sqrtDoubledIncrementedInt = _Assert_Identifier(sqrtDoubledIncrementedInt, "sqrtDoubledIncrementedInt").A;
var castToInt = _Assert_LocalDeclaration(localDecl_sqrtDoubledIncrementedInt, "sqrtDoubledIncrementedInt").A;
var sqrtDoubledIncremented = _Assert_CastExpression(castToInt, typeof(int), methodAnalysis).A;
var localDecl_sqrtDoubledIncremented = _Assert_Identifier(sqrtDoubledIncremented, "sqrtDoubledIncremented").A;
var sqrt = _Assert_LocalDeclaration(localDecl_sqrtDoubledIncremented, "sqrtDoubledIncremented").A;
var(mathSqrt, args_doubledIncremented) = _Assert_Invocation(sqrt, nameof(Math.Sqrt));
var localDecl_doubledIncremented = _Assert_Identifier(args_doubledIncremented.Single().A, "doubledIncremented").A;
var parenthesizedExprAdd = _Assert_LocalDeclaration(localDecl_doubledIncremented, "doubledIncremented").A;
var binary_add = _Assert_ParenthesizedExpr(parenthesizedExprAdd).A;
var(doubled, oneLiteral) = _Assert_BinaryExpression(binary_add, operatorToken: SyntaxKind.PlusToken);
_Assert_Literal(oneLiteral.A, 1);
var localDecl_doubled = _Assert_Identifier(doubled.A, "doubled");
Assert.IsFalse(localDecl_doubled.IsA);
}