// Workflow variable by Linq
public void VariableByLinq()
{
// Linq treats local variable with special syntax.
// See comment in LeafHelper.GetMemberAccessVariableExpression for more info.
// The purpose test is to use real compiler generated lambda expression.
Variable <string> var = new Variable <string>()
{
Name = "var",
Default = "Linq var test"
};
Expression <Func <ActivityContext, string> > expression = (env) => var.Get(env);
CoreWf.Statements.Sequence expectedSequence = new CoreWf.Statements.Sequence()
{
Variables =
{
var
},
Activities =
{
new WriteLine()
{
Text = var
}
}
};
CoreWf.Statements.Sequence actualSequence = new CoreWf.Statements.Sequence()
{
Variables =
{
var
},
Activities =
{
new WriteLine()
{
Text = ExpressionServices.Convert(expression)
}
}
};
ExpressionTestRuntime.ValidateActivity(expectedSequence, actualSequence);
}
public static Activity ConvertReferenceAndValidate <TResult>(Expression <Func <ActivityContext, TResult> > expr, Activity expectedActivity, Exception expectedException)
{
bool expectSuccess = expectedException == null ? true : false;
Activity act = ExpressionTestRuntime.ConvertReference(expr, expectedException);
if (expectSuccess)
{
ExpressionTestRuntime.ValidateActivity(act, expectedActivity);
}
act = ExpressionTestRuntime.TryConvertReference(expr, expectSuccess);
if (expectSuccess)
{
ExpressionTestRuntime.ValidateActivity(act, expectedActivity);
}
return(act);
}