node-dijkstra/test/validateDeep.test.js

A NodeJS implementation of Dijkstra's algorithm

/* eslint-env node, mocha */
/* eslint import/no-extraneous-dependencies: ["error", {"devDependencies": true}] */

require("must");
const demand = require("must");

const validateDeep = require("../libs/validateDeep");

describe("validateDeep()", () => {
  it("does nothing on a valid deep map", () => {
    const m = new Map();
    const a = new Map();
    a.set("a", 1);
    m.set("a", a);

    validateDeep(m);
  });

  it("rejects non-number values", () => {
    const m = new Map();
    const a = new Map();
    a.set("a", "something");
    m.set("a", a);

    demand(validateDeep.bind(this, m)).to.throw(Error, /must be numbers/);
  });

  it("rejects negative values", () => {
    const m = new Map();
    const a = new Map();
    a.set("a", -3);
    m.set("a", a);

    demand(validateDeep.bind(this, m)).to.throw(Error, /must be numbers/);
  });

  it("rejects 0", () => {
    const m = new Map();
    const a = new Map();
    a.set("a", 0);
    m.set("a", a);

    demand(validateDeep.bind(this, m)).to.throw(Error, /must be numbers/);
  });

  it("rejects graphs not of type Map", () => {
    demand(validateDeep.bind(this, undefined)).to.throw(
      Error,
      /Expected Map instead/
    );
  });

  it("accepts 0.02", () => {
    const m = new Map();
    const a = new Map();
    a.set("a", 0.02);
    m.set("a", a);

    validateDeep(m);
  });
});