public void ShouldSetValue()
{
ValueEnvironment environment = new ValueEnvironment();
environment.SetValue("foo", "bar");
Assert.AreEqual("bar", environment.GetValue("foo"));
}
public void ShouldGetValueFromParent()
{
ValueEnvironment parent = new ValueEnvironment();
ValueEnvironment environment = new ValueEnvironment(parent);
parent.SetValue("foo", "bar");
Assert.AreEqual("bar", environment.GetValue("foo"));
}
public void ShouldSetAndGetLocalValue()
{
ValueEnvironment parent = new ValueEnvironment();
ValueEnvironment environment = new ValueEnvironment(parent);
environment.SetValue("foo", "bar");
Assert.AreEqual("bar", environment.GetValue("foo"));
Assert.IsNull(parent.GetValue("foo"));
}
public static Variable ToVariable(Machine machine, ValueEnvironment environment, Symbol symbol)
{
string ns = symbol.Namespace;
if (String.IsNullOrEmpty(ns))
ns = (string)environment.GetValue(Machine.CurrentNamespaceKey);
string name = symbol.Name;
Variable variable = machine.GetVariable(ns, name);
if (variable == null)
variable = Variable.Intern(machine, ns, name);
return variable;
}
public void ShouldGetNullIfNoValue()
{
ValueEnvironment environment = new ValueEnvironment();
Assert.IsNull(environment.GetValue("foo"));
}
