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var assert = require('assert');
var R = require('../source');var eq = require('./shared/eq');

describe('nth', function() {
  var list = ['foo', 'bar', 'baz', 'quux'];
  it('accepts positive offsets', function() {    eq(R.nth(0, list), 'foo');    eq(R.nth(1, list), 'bar');    eq(R.nth(2, list), 'baz');    eq(R.nth(3, list), 'quux');    eq(R.nth(4, list), undefined);
    eq(R.nth(0, 'abc'), 'a');    eq(R.nth(1, 'abc'), 'b');    eq(R.nth(2, 'abc'), 'c');    eq(R.nth(3, 'abc'), '');  });
  it('accepts negative offsets', function() {    eq(R.nth(-1, list), 'quux');    eq(R.nth(-2, list), 'baz');    eq(R.nth(-3, list), 'bar');    eq(R.nth(-4, list), 'foo');    eq(R.nth(-5, list), undefined);
    eq(R.nth(-1, 'abc'), 'c');    eq(R.nth(-2, 'abc'), 'b');    eq(R.nth(-3, 'abc'), 'a');    eq(R.nth(-4, 'abc'), '');  });
  it('throws if applied to null or undefined', function() {    assert.throws(function() { R.nth(0, null); }, TypeError);    assert.throws(function() { R.nth(0, undefined); }, TypeError);  });
});