48 lines
1.8 KiB
Plaintext
48 lines
1.8 KiB
Plaintext
"use strict";
|
|
|
|
var assert = require("chai").assert
|
|
, coerceToNaturalNumber = require("../../natural-number/coerce");
|
|
|
|
describe("natural-number/coerce", function () {
|
|
it("Should coerce float to integer", function () {
|
|
assert.equal(coerceToNaturalNumber(123.123), 123);
|
|
assert.equal(coerceToNaturalNumber(123.823), 123);
|
|
});
|
|
it("Should coerce string", function () { assert.equal(coerceToNaturalNumber("12.123"), 12); });
|
|
it("Should coerce booleans", function () { assert.equal(coerceToNaturalNumber(true), 1); });
|
|
it("Should coerce number objects", function () {
|
|
assert.equal(coerceToNaturalNumber(new Number(343)), 343);
|
|
});
|
|
it("Should coerce objects", function () {
|
|
assert.equal(coerceToNaturalNumber({ valueOf: function () { return 23; } }), 23);
|
|
});
|
|
it("Should coerce number beyond Number.MAX_SAFE_INTEGER", function () {
|
|
assert.equal(coerceToNaturalNumber(9007199254740992), 9007199254740992);
|
|
});
|
|
|
|
it("Should reject negative number", function () {
|
|
assert.equal(coerceToNaturalNumber(-1), null);
|
|
});
|
|
it("Should reject infinite number", function () {
|
|
assert.equal(coerceToNaturalNumber(Infinity), null);
|
|
});
|
|
it("Should reject NaN", function () { assert.equal(coerceToNaturalNumber(NaN), null); });
|
|
|
|
if (typeof Object.create === "function") {
|
|
it("Should not coerce objects with no number representation", function () {
|
|
assert.equal(coerceToNaturalNumber(Object.create(null)), null);
|
|
});
|
|
}
|
|
|
|
it("Should not coerce null", function () { assert.equal(coerceToNaturalNumber(null), null); });
|
|
it("Should not coerce undefined", function () {
|
|
assert.equal(coerceToNaturalNumber(undefined), null);
|
|
});
|
|
|
|
if (typeof Symbol === "function") {
|
|
it("Should not coerce symbols", function () {
|
|
assert.equal(coerceToNaturalNumber(Symbol("foo")), null);
|
|
});
|
|
}
|
|
});
|