public static bool FillVariables(this ITerminal terminal, TextReader input, IEnumerable <Variable> variables, ResolveContext context)
{
Assert.IsNotNull(variables);
Assert.IsNotNull(context);
bool isFirst = true;
foreach (Variable v in variables)
{
if (context.HasVariable(v.Name))
{
continue;
}
if (isFirst)
{
terminal.OutputLine("Please input variable value:");
isFirst = false;
}
string?line = terminal.InputVariableValue(input, v);
if (string.IsNullOrEmpty(line))
{
if (v.IsRequired)
{
return(false);
}
}
else
{
_ = context.WithVariable(v.Name, line !);
}
}
return(true);
}
public void Basic()
{
ResolveContext context = new ResolveContext();
_ = context.WithVariable("a", "a");
Assert.IsTrue(context.HasVariable("a"));
_ = context.WithVariable("a", "b");
Assert.AreEqual("b", context.GetVariable <string>(new Variable("a")));
Assert.IsFalse(context.TryGetVariable <int>(new Variable("a"), out _));
Assert.IsTrue(context.TryGetVariable <string>(new Variable("a"), out _));
_ = context.WithoutVariable("a");
Assert.IsFalse(context.HasVariable("a"));
_ = Assert.ThrowsException <Exception>(() => context.GetVariable <string>(new Variable("a").Required()));
Assert.IsFalse(context.TryGetVariable <string>(new Variable("a"), out _));
Assert.AreEqual("c", context.GetVariable <string>(new Variable("a").NotRequired("c")));
}
