72 lines
3.2 KiB
JavaScript
72 lines
3.2 KiB
JavaScript
|
Expression = require("../expression.js").Expression;
|
||
|
|
|
||
|
|
let six_plus_nine = new Expression('+', 6, 9);
|
||
|
|
let six_times_nine = new Expression('*', 6, 9);
|
||
|
|
let six_minus_nine = new Expression('-', 6, 9);
|
||
|
|
let sixteen_div_eight = new Expression('/', 16, 8);
|
||
|
|
let compound1 = new Expression('+', six_times_nine, six_plus_nine)
|
||
|
|
let compound2 = new Expression('*', six_times_nine, compound1)
|
||
|
|
let compound3 = new Expression('+', compound2, 3)
|
||
|
|
|
||
|
|
describe("constructor",
|
||
|
|
function() {
|
||
|
|
let one = new Expression("+",0,1);
|
||
|
|
it("not null", () => expect(one).not.toBe(null));
|
||
|
|
it("op", () => expect(one.op).toBe("+"));
|
||
|
|
it("left", () => expect(one.left).toBe(0));
|
||
|
|
it("right", () => expect(one.right).toBe(1));
|
||
|
|
});
|
||
|
|
|
||
|
|
describe("simple",
|
||
|
|
function() {
|
||
|
|
it("+", () => expect(six_plus_nine.eval()).toBe(15));
|
||
|
|
it("-", () => expect(six_minus_nine.eval()).toBe(-3));
|
||
|
|
it("*", () => expect(six_times_nine.eval()).toBe(54));
|
||
|
|
it("/", () => expect(sixteen_div_eight.eval()).toBe(2));
|
||
|
|
});
|
||
|
|
|
||
|
|
describe("compound",
|
||
|
|
function() {
|
||
|
|
it("1", () => expect(compound1.eval()).toBe(69));
|
||
|
|
it("2", () => expect(compound2.eval()).toBe(3726));
|
||
|
|
it("3", () => expect(compound3.eval()).toBe(3729));
|
||
|
|
});
|
||
|
|
|
||
|
|
describe("floating point", //Testing floating point
|
||
|
|
function() {
|
||
|
|
let addPointFive = new Expression("+", 0.5, 0.5)
|
||
|
|
let timesPointFive = new Expression("*", 0.5, 10)
|
||
|
|
let minusPointFive = new Expression("-", 10, 0.5)
|
||
|
|
let dividePointFive = new Expression("/", 0.5, 0.1)
|
||
|
|
|
||
|
|
it("+", () => expect(addPointFive.eval()).toBe(1.0));
|
||
|
|
it("*", () => expect(timesPointFive.eval()).toBe(5.0));
|
||
|
|
it("-", () => expect(minusPointFive.eval()).toBe(9.5));
|
||
|
|
it("/", () => expect(dividePointFive.eval()).toBe(5.0));
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
describe("bad input", //Testing bad inputs
|
||
|
|
function() {
|
||
|
|
let invalidStringLeft = new Expression("+", "five", 6)
|
||
|
|
let invalidStringRight = new Expression("+", 5, "six")
|
||
|
|
let invalidOperator = new Expression("^", 6, 9)
|
||
|
|
|
||
|
|
it("Invalid String on left side", () => expect(invalidStringLeft.eval()).toBe("Invalid number syntax"));
|
||
|
|
it("Invalid String on right side", () => expect(invalidStringRight.eval()).toBe("Invalid number syntax"));
|
||
|
|
it("invalid operator", () => expect(invalidOperator.eval()).toBe("Invalid operator syntax"));
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
describe("compound bad input", //Testing bad inputs in compound cases
|
||
|
|
function() {
|
||
|
|
let invalidNumber = new Expression("+", "five", 6)
|
||
|
|
let invalidOperator = new Expression("^", 6, 9)
|
||
|
|
|
||
|
|
let semiValidCompound = new Expression("+", six_plus_nine, invalidNumber)
|
||
|
|
let completlyBadCompound = new Expression("+", invalidNumber, invalidOperator)
|
||
|
|
|
||
|
|
it("semi-valid", () => expect(semiValidCompound.eval()).toBe("Invalid number syntax"));
|
||
|
|
it("invalid", () => expect(completlyBadCompound.eval()).toBe("Invalid number syntax")); //Expected to be invalid number because it is the first error to be encountered
|
||
|
|
});
|