public void ExprTest()
{
const string input = "12 * 3 + foo(-3, x)() * (2 + 1)";
var actual = AddOp.Create(
MultiplyOp.Create(
Literal.Create(12),
Literal.Create(3)
),
MultiplyOp.Create(
Call.Create(
Call.Create(
new Identifier("foo"),
NegativeOp.Create(Literal.Create(3)),
new Identifier("x")
)
),
AddOp.Create(
new Two(),
new One()
)
)
).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.Simplify(), actual);
}
public void BracketsTest()
{
var actual = ExprParser.ParseOrThrow("1+[2+y]/{x*(y+4)}");
var expected = new One() + (AddOp.Create(new Two(), new Identifier("y")) / MultiplyOp.Create(new Identifier("x"), AddOp.Create(4, new Identifier("y"))));
Assert.AreEqual(expected, actual);
}
public void RaisedToNumberThenAddTest()
{
var actual = AddOp.Create(PowerOp.Create(A, One), Two);
Assert.AreEqual(ExprParser.ParseOrThrow("a^1+2"), actual);
Assert.AreEqual(A.Raise(One) + Two, actual.Simplify());
}
public void Test1()
{
const string input = "-(2-a)^1+3";
var actual = AddOp.Create(NegativeOp.Create(PowerOp.Create(SubtractOp.Create(new Two(), new Identifier("a")), new One())), Literal.Create(3)).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.Simplify(), actual);
}
public void QuantityTwoMinus_a_raisedTo1Plus3Test()
{
const string input = "(2-a)^1+3";
var actual = AddOp.Create(PowerOp.Create(SubtractOp.Create(new Two(), new Identifier("a")), new One()), Literal.Create(3)).Simplify();
var expected = ExprParser.ParseOrThrow(input).Simplify();
Assert.AreEqual(expected, actual);
}
public void AddToLiteralTest()
{
var actual1 = AddOp.Create(new Identifier("x"), 1);
var actual2 = AddOp.Create(1, new Identifier("x"));
Assert.AreEqual(X + One, actual1);
Assert.AreEqual(One + X, actual2);
}
public void XRaiseToXTimesXRaiseTo2()
{
var x = new Identifier("x");
var xToX = x.Raise(x);
var xTo2 = x.Raise(new Two());
var expected = x.Raise(AddOp.Create(2, x));
Assert.AreEqual(xToX * xTo2, expected);
}
public void AddTest1()
{
var d = ExprParser.ParseOrThrow("2*x");
var e = ExprParser.ParseOrThrow("1*x");
var f = ExprParser.ParseOrThrow("2");
var h = ExprParser.ParseOrThrow("2");
Assert.AreEqual(d + e + f + h, AddOp.Create(MultiplyOp.Create(3, new Identifier("x")), 4));
}
public void SubtractToNegativeLiteralTest()
{
var num = new One();
var actual1 = AddOp.Create(new Identifier("x"), 1);
var actual2 = AddOp.Create(1, new Identifier("x"));
Assert.AreEqual(X - NegativeOp.Create(num), actual1);
Assert.AreEqual(num - NegativeOp.Create(X), actual2);
}
public static Expr Create(Expr left, Expr right) => (left, right) switch
{
(Zero _, _) => - right,
(_, Zero _) => left,
(_, NegativeOp {
Expr : Literal l
}) => AddOp.Create(left, l),
_ => new SubtractOp(left, right)
};
public void DecimalTest()
{
var onePthree = ExprParser.ParseOrThrow("1.3");
Assert.AreEqual(onePthree, DivideOp.Create(13, 10));
var actual = AddOp.Create(PowerOp.Create(A, onePthree), Two);
Assert.AreEqual(ExprParser.ParseOrThrow("a^1.3+2"), actual);
Assert.AreEqual(A.Raise(onePthree) + Two, actual.Simplify());
}
public void NegativeBeforeAddTest()
{
const string input = "-12 + 3";
var actual = AddOp.Create(
NegativeOp.Create(Literal.Create(12)),
Literal.Create(3)
).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.Simplify(), actual);
}
public void Test3()
{
const string input = "-a/b^1+3-a/b^1";
var term1 = DivideOp.Create(NegativeOp.Create(new Identifier("a")), PowerOp.Create(new Identifier("b"), new One()));
var term2 = Literal.Create(3);
var term3 = DivideOp.Create(new Identifier("a"), PowerOp.Create(new Identifier("b"), new One()));
var actual = SubtractOp.Create(AddOp.Create(term1, term2), term3).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.Simplify(), actual);
}
public void Test4()
{
const string input = "1-2/3+1-3+3*2";
var a = new One();
var b = DivideOp.Create(new Two(), Literal.Create(3));
var c = new One();
var d = Literal.Create(3);
var e = MultiplyOp.Create(Literal.Create(3), new Two());
var actual = AddOp.Create(SubtractOp.Create(AddOp.Create(SubtractOp.Create(a, b), c), d), e).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.Simplify(), actual);
}
public void SubtractThenMultTest()
{
var input = "(d-12) * 3";
var actual = MultiplyOp.Create(
SubtractOp.Create(new Identifier("d"), Literal.Create(12)),
Literal.Create(3)
).Simplify();
var expected = ExprParser.ParseOrThrow(input);
Assert.AreEqual(expected.ToString(), "3×(d-12)");
Assert.AreEqual(expected.Simplify(), actual);
input = "(d+12) * 3";
actual = MultiplyOp.Create(
AddOp.Create(new Identifier("d"), Literal.Create(12)),
Literal.Create(3)
).Simplify();
expected = ExprParser.ParseOrThrow(input).Simplify();
Assert.AreEqual(expected, actual);
}
public void AddToIdentifierDifferent()
{
Assert.AreEqual(i1 + i3, AddOp.Create(new Identifier("x"), new Identifier("y")));
Assert.AreEqual(i3 + i1, AddOp.Create(new Identifier("y"), new Identifier("x")));
}
