public void ListToString()
{
LispAssert.EvaluatesTo(Lisp.Constant("test"),
Lisp.List(Lisp.Symbol("list->string"), Lisp.Quote(Lisp.List(Lisp.Constant('t'), Lisp.Constant('e'), Lisp.Constant('s'), Lisp.Constant('t')))));
LispAssert.EvaluatesTo(Lisp.Constant(""),
Lisp.List(Lisp.Symbol("list->string"), Lisp.Nil));
}
public void If()
{
ILispEnvironment environment = new GlobalEnvironment();
environment.Set(new Symbol("kablooey"), new NativeLambda {
Body = parameters => { throw new LispException("kablooey!"); }
});
// Ensure only the "then" clause is evaluated on a true condition.
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("if"), Lisp.Constant(true), Lisp.Constant(1), Lisp.List(Lisp.Symbol("kablooey"))),
environment);
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("if"), Lisp.Constant(true), Lisp.List(Lisp.Symbol("kablooey")), Lisp.Constant(1)),
environment);
// Ensure only the "else" clause is evaluated on a false condition.
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("if"), Lisp.Constant(false), Lisp.List(Lisp.Symbol("kablooey")), Lisp.Constant(1)),
environment);
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("if"), Lisp.Constant(false), Lisp.Constant(1), Lisp.List(Lisp.Symbol("kablooey"))),
environment);
// Ensure the test condition clause is evaluated. In this case, a non-empty list would be true if not
// evaluated, but evaluating the expression will produce false.
LispAssert.EvaluatesTo(Lisp.Constant(2),
Lisp.List(Lisp.Symbol("if"), Lisp.List(Lisp.Symbol("number?"), Lisp.Symbol("car")), Lisp.Constant(1), Lisp.Constant(2)));
// Test truth / falsiness of non-boolean - only #f and () should count as false.
LispAssert.EvaluatesTo(Lisp.Constant(2), Lisp.List(Lisp.Symbol("if"), Lisp.Nil, Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(1), Lisp.List(Lisp.Symbol("if"), Lisp.Quote(Lisp.List(Lisp.Constant(false))), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(1), Lisp.List(Lisp.Symbol("if"), Lisp.Constant(""), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(1), Lisp.List(Lisp.Symbol("if"), Lisp.Symbol("cdr"), Lisp.Constant(1), Lisp.Constant(2)));
}
public void StringLength()
{
LispAssert.EvaluatesTo(Lisp.Constant(4),
Lisp.List(Lisp.Symbol("string-length"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Constant(0),
Lisp.List(Lisp.Symbol("string-length"), Lisp.Constant("")));
}
public void StringToList()
{
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant('t'), Lisp.Constant('e'), Lisp.Constant('s'), Lisp.Constant('t')),
Lisp.List(Lisp.Symbol("string->list"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Nil,
Lisp.List(Lisp.Symbol("string->list"), Lisp.Constant("")));
}
public void ProperListToString()
{
ILispValue properList = Lisp.List(Lisp.Symbol("test"), Lisp.Constant(1), Lisp.Constant("foo"), Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)), Lisp.Constant(true));
Assert.IsInstanceOfType(properList, typeof(ConsBox));
Assert.AreEqual("(test 1 \"foo\" (1 2 3) #t)", properList.ToString());
}
public void ImproperListToString()
{
ConsBox improperList = new ConsBox {
Head = Lisp.Symbol("test"), Tail = Lisp.Constant(1)
};
Assert.AreEqual("(test . 1)", improperList.ToString());
}
public void MakeString()
{
LispAssert.EvaluatesTo(Lisp.Constant("xxxxxxxxxx"),
Lisp.List(Lisp.Symbol("make-string"), Lisp.Constant(10), Lisp.Constant('x')));
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("make-string"), Lisp.Constant(9.3m), Lisp.Constant('x')));
LispAssert.EvaluatesTo(Lisp.Constant(8),
Lisp.List(Lisp.Symbol("string-length"), Lisp.List(Lisp.Symbol("make-string"), Lisp.Constant(8))));
}
public void List()
{
LispAssert.EvaluatesTo(Lisp.Nil,
Lisp.List(Lisp.Symbol("list")));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(1)),
Lisp.List(Lisp.Symbol("list"), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(1), Lisp.Constant(2)),
Lisp.List(Lisp.Symbol("list"), Lisp.Constant(1), Lisp.Constant(2)));
}
public void Cons()
{
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(1)),
Lisp.List(Lisp.Symbol("cons"), Lisp.Constant(1), Lisp.Nil));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(1), Lisp.Constant(2)),
Lisp.List(Lisp.Symbol("cons"), Lisp.Constant(1), Lisp.Quote(Lisp.List(Lisp.Constant(2)))));
LispAssert.EvaluatesTo(Lisp.Cons(Lisp.Constant(1), Lisp.Constant(2)),
Lisp.List(Lisp.Symbol("cons"), Lisp.Constant(1), Lisp.Constant(2)));
}
public void Length()
{
LispAssert.EvaluatesTo(Lisp.Constant(0),
Lisp.List(Lisp.Symbol("length"), Lisp.Nil));
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("length"), Lisp.Quote(Lisp.List(Lisp.Constant(1)))));
LispAssert.EvaluatesTo(Lisp.Constant(2),
Lisp.List(Lisp.Symbol("length"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Constant(2)))));
LispAssert.EvaluatesTo(Lisp.Constant(5),
Lisp.List(Lisp.Symbol("length"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4), Lisp.Constant(5)))));
}
public void Reverse()
{
LispAssert.EvaluatesTo(Lisp.Nil,
Lisp.List(Lisp.Symbol("reverse"), Lisp.Nil));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(1)),
Lisp.List(Lisp.Symbol("reverse"), Lisp.Quote(Lisp.List(Lisp.Constant(1)))));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(2), Lisp.Constant(1)),
Lisp.List(Lisp.Symbol("reverse"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Constant(2)))));
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(5), Lisp.Constant(4), Lisp.Constant(3), Lisp.Constant(2), Lisp.Constant(1)),
Lisp.List(Lisp.Symbol("reverse"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4), Lisp.Constant(5)))));
}
public void StringP()
{
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("string?"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), Lisp.Constant(true)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), Lisp.Constant('x')));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), Nil.Instance));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), Lisp.Constant(5)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), Lisp.Quote(Lisp.Symbol("test"))));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("string?"), new UndefinedValue()));
}
public void ListP()
{
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("list?"), Lisp.Nil));
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("list?"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Symbol("a")))));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), Lisp.Constant(true)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), Lisp.Constant('x')));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), Lisp.Constant(5)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), Lisp.Quote(Lisp.Symbol("test"))));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("list?"), new UndefinedValue()));
}
public void NumberP()
{
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("number?"), Lisp.Constant(5)));
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("number?"), Lisp.Constant(9.95m)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), Lisp.Constant(true)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), Lisp.Constant('x')));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), Nil.Instance));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), Lisp.Quote(Lisp.Symbol("test"))));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("number?"), new UndefinedValue()));
}
public void StringRef()
{
LispAssert.EvaluatesTo(Lisp.Constant('t'),
Lisp.List(Lisp.Symbol("string-ref"), Lisp.Constant("test"), Lisp.Constant(0)));
LispAssert.EvaluatesTo(Lisp.Constant('s'),
Lisp.List(Lisp.Symbol("string-ref"), Lisp.Constant("test test test"), Lisp.Constant(12)));
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("string-ref"), Lisp.Constant("test"), Lisp.Constant(-1)));
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("string-ref"), Lisp.Constant("test"), Lisp.Constant(4)));
LispAssert.ThrowsWhenEvaluated(
Lisp.List(Lisp.Symbol("string-ref"), Lisp.Constant("test"), Lisp.Constant(2.2m)));
}
public void Cdr()
{
LispAssert.EvaluatesTo(Lisp.List(Lisp.Constant(2), Lisp.Constant(3)),
Lisp.List(Lisp.Symbol("cdr"), Lisp.Quote(Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)))));
LispAssert.EvaluatesTo(Lisp.Nil,
Lisp.List(Lisp.Symbol("cdr"), Lisp.Quote(Lisp.List(Lisp.Constant(1)))));
LispAssert.EvaluatesTo(Lisp.Constant(2),
Lisp.List(Lisp.Symbol("cdr"), Lisp.Quote(Lisp.Cons(Lisp.Constant(1), Lisp.Constant(2)))));
LispAssert.ThrowsWhenEvaluated(Lisp.List(Lisp.Symbol("cdr"), Lisp.Nil));
LispAssert.ThrowsWhenEvaluated <TypeMismatchException>(Lisp.List(Lisp.Symbol("cdr"), Lisp.Constant(3)));
LispAssert.ThrowsWhenEvaluated <SignatureMismatchException>(Lisp.List(Lisp.Symbol("cdr")));
}
public void LambdaP()
{
LispAssert.EvaluatesTo(Lisp.Constant(true), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Symbol("lambda?")));
// TODO: add test for user-defined function
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Constant(true)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Constant('x')));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Nil.Instance));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Constant(5)));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Constant("test")));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), Lisp.Quote(Lisp.Symbol("test"))));
LispAssert.EvaluatesTo(Lisp.Constant(false), Lisp.List(Lisp.Symbol("lambda?"), new UndefinedValue()));
}
public void ProperListConstruction()
{
ILispValue helperConstructedList = Lisp.List(
Lisp.Symbol("test"),
Lisp.Constant(1),
Lisp.Constant("foo"),
Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)),
Lisp.Constant(true));
ILispValue manuallyConstructedList = new ConsBox
{
Head = Lisp.Symbol("test"),
Tail = new ConsBox
{
Head = Lisp.Constant(1),
Tail = new ConsBox
{
Head = Lisp.Constant("foo"),
Tail = new ConsBox
{
Head = new ConsBox
{
Head = Lisp.Constant(1),
Tail = new ConsBox
{
Head = Lisp.Constant(2),
Tail = new ConsBox
{
Head = Lisp.Constant(3),
Tail = Nil.Instance
}
}
},
Tail = new ConsBox
{
Head = Lisp.Constant(true),
Tail = Nil.Instance
}
}
}
}
};
// Do not use Assert.AreEqual here since it doesn't use IEquatable.
LispAssert.AreEqual(manuallyConstructedList, helperConstructedList);
}
public void Subtract()
{
LispAssert.EvaluatesTo(Lisp.Constant(-1),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(-1),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(-4),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(-0.1m),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(3.1m), Lisp.Constant(2.1m), Lisp.Constant(1.1m)));
LispAssert.EvaluatesTo(Lisp.Constant(0.1m),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(3.1m), Lisp.Constant(2), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(-0.1m),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(3), Lisp.Constant(2.1m), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(-0.1m),
Lisp.List(Lisp.Symbol("-"), Lisp.Constant(3), Lisp.Constant(2), Lisp.Constant(1.1m)));
}
public void Add()
{
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(3),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(6),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(6.3m),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1.1m), Lisp.Constant(2.1m), Lisp.Constant(3.1m)));
LispAssert.EvaluatesTo(Lisp.Constant(6.1m),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1.1m), Lisp.Constant(2), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(6.1m),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1), Lisp.Constant(2.1m), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(6.1m),
Lisp.List(Lisp.Symbol("+"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3.1m)));
}
public void Divide()
{
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(0.5m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(1m / 2m / 3m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(1m / 2m / 3m / 4m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(3.1m / 2.1m / 1.1m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(3.1m), Lisp.Constant(2.1m), Lisp.Constant(1.1m)));
LispAssert.EvaluatesTo(Lisp.Constant(2.1m / 3m / 4m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(2.1m), Lisp.Constant(3), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(2m / 3.1m / 4m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(2), Lisp.Constant(3.1m), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(2m / 3m / 4.1m),
Lisp.List(Lisp.Symbol("/"), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4.1m)));
}
public void Multiply()
{
LispAssert.EvaluatesTo(Lisp.Constant(1),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(1)));
LispAssert.EvaluatesTo(Lisp.Constant(2),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(1), Lisp.Constant(2)));
LispAssert.EvaluatesTo(Lisp.Constant(6),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)));
LispAssert.EvaluatesTo(Lisp.Constant(24),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(3.1m * 2.1m * 1.1m),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(3.1m), Lisp.Constant(2.1m), Lisp.Constant(1.1m)));
LispAssert.EvaluatesTo(Lisp.Constant(2.1m * 3 * 4),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(2.1m), Lisp.Constant(3), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(2 * 3.1m * 4),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(2), Lisp.Constant(3.1m), Lisp.Constant(4)));
LispAssert.EvaluatesTo(Lisp.Constant(2 * 3 * 4.1m),
Lisp.List(Lisp.Symbol("*"), Lisp.Constant(2), Lisp.Constant(3), Lisp.Constant(4.1m)));
}
public void MixedImproperListToString()
{
ConsBox improperList = new ConsBox
{
Head = Lisp.Symbol("test"),
Tail = new ConsBox
{
Head = Lisp.Constant(1),
Tail = new ConsBox
{
Head = Lisp.Constant("foo"),
Tail = new ConsBox
{
Head = Lisp.List(Lisp.Constant(1), Lisp.Constant(2), Lisp.Constant(3)),
Tail = Lisp.Constant(true)
}
}
}
};
Assert.AreEqual("(test 1 \"foo\" (1 2 3) . #t)", improperList.ToString());
}
public void Quote()
{
LispAssert.EvaluatesTo(Lisp.List(Lisp.Symbol("car"), Lisp.Nil),
Lisp.Quote(Lisp.List(Lisp.Symbol("car"), Lisp.Nil)));
}