protected override void BuildArrangeSourceCode(MethodSourceCodeGenerationRequest request) { var method = request.Method; if (method.IsStatic) { return; } string variableName; if (testMethodValueProvider.HasVariableForTestedType(method.ReflectedType, out variableName))//referencing existing variable { InstanceExpression = Expression.Variable(method.ReflectedType, variableName); } else { ParameterExpression instanceExpression; var assignExpr = expressionBuilder.BuildInstanceCreationWithAssigmentExpression(method.ReflectedType, out instanceExpression); InstanceExpression = instanceExpression; Append("var "); var expresionAsString = expressionBuilder.ExpressionToString(assignExpr); Append(expresionAsString.RemoveParantheses()); AppendLine(";"); } }