var addon = require('../native');
var assert = require('chai').assert;

describe('JsNumber', function() {
  it('return a JsNumber built in Rust', function () {
    assert.equal(addon.return_js_number(), 9000);
  });

  it('return a JsNumber for a large int built in Rust', function () {
    assert.equal(addon.return_large_js_number(), 4294967296);
  });

  it('return a negative JsNumber int built in Rust', function () {
    assert.equal(addon.return_negative_js_number(), -9000);
  });

  it('return a JsNumber float built in Rust', function () {
    assert.equal(addon.return_float_js_number(), 1.4747);
  });

  it('return a negative JsNumber float built in Rust', function () {
    assert.equal(addon.return_negative_float_js_number(), -1.4747);
  });

  describe('round trips', function () {
    it('accept and return a number', function () {
      assert.equal(addon.accept_and_return_js_number(1), 1);
    });

    it('accept and return a large number as a JsNumber', function () {
      assert.equal(addon.accept_and_return_large_js_number(9007199254740991), 9007199254740991);
    });

    it('will be safe below Number.MAX_SAFE_INTEGER', function () {
      assert.notEqual(addon.accept_and_return_large_js_number(9007199254740990), 9007199254740991);
    });

    it('will not be save above Number.MAX_SAFE_INTEGER', function () {
      assert.equal(addon.accept_and_return_large_js_number(9007199254740993), 9007199254740992);
    });

    it('accept and return a float as a JsNumber', function () {
      assert.equal(addon.accept_and_return_float_js_number(0.23423), 0.23423);
    });

    it('accept and return a negative number as a JsNumber', function () {
      assert.equal(addon.accept_and_return_negative_js_number(-55), -55);
    });
  });

});
