typify/test/builtin.js

Runtime type-checking for JavaScript.

/* global describe, it */

"use strict";

var typify = require("../lib/typify.js");
var assert = require("assert");
var _ = require("lodash");

describe("regexp", function () {
  it("are RegExp objects", function () {
    assert(typify.check("regexp", /foo/));
    assert(typify.check("regexp", new RegExp("foo")));
    assert(!typify.check("regexp", 1));
  });
});

describe("date", function () {
  it("are Date objects", function () {
    assert(typify.check("date", new Date()));
    assert(!typify.check("date", 1));
  });
});

describe("null", function () {
  it("matches `null`", function () {
    assert(typify.check("null", null));
    assert(!typify.check("null", undefined));
    assert(!typify.check("null", {}));
  });
});

describe("literal numbers", function () {
  it("matches number exactly", function () {
    assert(typify.check("1", 1));
    assert(!typify.check("1", "1"));
    assert(!typify.check("1", 2));
    assert(typify.check("100", 100));
  });
});

describe("literal strings", function () {
  it("matches string exactly", function () {
    assert(typify.check("'foo'", "foo"));
    assert(typify.check("\"foo\"", "foo"));
    assert(!typify.check("'foo'", 2));
    assert(typify.check("'bar'", "bar"));
  });
});

describe("literal atoms", function () {
  it("matches true, false, null", function () {
    var literals = {
      "null": null,
      "true": true,
      "false": false,
      "infinity": Infinity,
      "ninfinity": -Infinity,
      "undefined": undefined,
      "nat": 1,
      "nan": NaN,
    };

    _.each(literals, function (v1, k1) {
      _.each(literals, function (v2, k2) {
        if (k1 === k2) {
          assert(typify.check(k1, v2));
        } else {
          assert(!typify.check(k1, v2), k1 + " - " + v2);
        }
      });
    });

    assert(typify.check("null", null));
    assert(!typify.check("true", null));
    assert(!typify.check("false", null));
    assert(!typify.check("number", null));

    assert(!typify.check("null", true));
    assert(typify.check("true", true));
    assert(!typify.check("false", true));
    assert(!typify.check("number", true));

    assert(!typify.check("null", false));
    assert(!typify.check("true", false));
    assert(typify.check("false", false));
    assert(!typify.check("number", false));

    assert(!typify.check("null", 1));
    assert(!typify.check("true", 1));
    assert(!typify.check("false", 1));
    assert(typify.check("number", 1));
  });
});

describe("tuple", function () {
  it("is fixed size array", function () {
    assert(typify.check("tuple integer string", [0, "foo"]));
    assert(!typify.check("tuple integer string", [0, 0]));
    assert(!typify.check("tuple integer string", [0]));
    assert(!typify.check("tuple integer string", 0));
  });
});

describe("arguments", function () {
  it("are special object", function () {
    assert(typify.check("arguments", arguments));
    assert(!typify.check("arguments", []));
  });
});