public void Does_Variable_Scope_Multi_Demarcation_Work_Correctly()
{
//given
ScopeChain chain = new ScopeChain();
chain.Push("link1");
chain.Push("link2");
chain.SetVariable("v2", "x");
chain.ApplyVariableScopeMarker();
chain.SetVariable("v2", "y");
chain.ApplyVariableScopeMarker();
chain.ApplyVariableScopeMarker();
chain.ApplyVariableScopeMarker();
//when
chain.DereferenceVariableScope();
chain.DereferenceVariableScope();
chain.DereferenceVariableScope();
chain.DereferenceVariableScope();
var v2 = (string)chain.AccessVariable("v2");
//then
Assert.Equal("x", v2);
}