public void TestScenario04_ControllingWhichMethodsRun()
{
var parser = new SpelExpressionParser();
var ctx = new StandardEvaluationContext();
ctx.SetRootObject(new Supervisor("Ben")); // so non-qualified references 'hasRole()' 'hasIpAddress()' are invoked against it);
// NEEDS TO OVERRIDE THE REFLECTION ONE - SHOW REORDERING MECHANISM
// Might be better with a as a variable although it would work as a property too...
// Variable references using a '#'
// SpelExpression expr = parser.parseExpression("(hasRole('SUPERVISOR') or (#a < 1.042)) and hasIpAddress('10.10.0.0/16')");
ctx.AddMethodResolver(new MyMethodResolver());
var expr = parser.ParseRaw("(HasRole(3) or (#a < 1.042)) and HasIpAddress('10.10.0.0/16')");
bool value;
ctx.SetVariable("a", 1.0d); // referenced as #a in the expression
value = expr.GetValue <bool>(ctx);
Assert.True((bool)value);
// ctx.setRootObject(new Manager("Luke"));
// ctx.setVariable("a",1.043d);
// value = (bool)expr.GetValue(ctx,typeof(bool));
// assertFalse(value);
}
public void TestAddingMethodResolvers()
{
var ctx = new StandardEvaluationContext();
// reflective method accessor is the only one by default
var methodResolvers = ctx.MethodResolvers;
Assert.Single(methodResolvers);
var dummy = new DummyMethodResolver();
ctx.AddMethodResolver(dummy);
Assert.Equal(2, ctx.MethodResolvers.Count);
var copy = new List <IMethodResolver>(ctx.MethodResolvers);
Assert.True(ctx.RemoveMethodResolver(dummy));
Assert.False(ctx.RemoveMethodResolver(dummy));
Assert.Single(ctx.MethodResolvers);
ctx.MethodResolvers = copy;
Assert.Equal(2, ctx.MethodResolvers.Count);
}
