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/* global describe, it */
var assert = require('assert')
var flatten = require('./')
describe('array-flatten', function () {
describe('flatten', function () {
it('should flatten an array', function () {
var result = flatten([1, [2, [3, [4, [5]]], 6, [[7], 8], 9], 10])
assert.deepEqual(result, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
})
it('should throw on non-array', function () {
assert.throws(function () {
flatten('test')
}, TypeError)
})
it('should work with non-array', function () {
var result = flatten.from('test')
assert.deepEqual(result, ['t', 'e', 's', 't'])
})
})
describe('depth', function () {
it('should flatten an array to a specific depth', function () {
var result = flatten.depth([1, [2, [3], 4], 5], 1)
assert.deepEqual(result, [1, 2, [3], 4, 5])
})
it('should clone an array when no depth is specified', function () {
var array = [1, [2, 3]]
var clone = flatten.depth(array, 0)
assert.ok(clone !== array)
assert.deepEqual(clone, array)
})
it('should throw on non-array', function () {
assert.throws(function () {
flatten.depth('test', 10)
}, TypeError)
})
it('should throw on non-numeric depth', function () {
assert.throws(function () {
flatten.fromDepth('test', 'test')
}, TypeError)
})
it('should work with "from"', function () {
var result = flatten.fromDepth('test', 1)
assert.deepEqual(result, ['t', 'e', 's', 't'])
})
})
})
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