const { assert } = require('chai')
const fs = require('fs')

describe('Filter', function () {

	// get function
	const reduce = require('./../src/reduce.js')

	// check results
	it('reduce, limit', function() {

		const options = {
			limit: 2
		}

		const data = reduce(options, [
			{ index: 0 },
			{ index: 1 },
			{ index: 2 },
			{ index: 3 },
			{ index: 4 }
		])

      	assert.equal(data.length, 2)
    })

	// check results
	it('reduce, offset', function() {

		const options = {
			offset: 2
		}

		const data = reduce(options, [
			{ index: 0 },
			{ index: 1 },
			{ index: 2 },
			{ index: 3 },
			{ index: 4 }
		])

      	assert.equal(data[0].index, 2)
    })

	// check results
	it('reduce, limit / offset', function() {

		const options = {
			offset: 2,
			limit: 3
		}

		const data = reduce(options, [
			{ index: 0 },
			{ index: 1 },
			{ index: 2 },
			{ index: 3 },
			{ index: 4 }
		])

      	assert.equal(data[0].index, 2)
		assert.equal(data.length, 3)
    })
})