import { describe, it } from 'mocha'
import { expect } from 'chai'
import { isProbablyPlainText } from '../src/utils/file-utils'

describe('isProbablyPlainText', () => {
    it('should return true for buffers only containing printable ascii', () => {
        expect(
            isProbablyPlainText(Buffer.from('hello this is some ascii text'))
        ).to.be.true
        expect(
            isProbablyPlainText(
                Buffer.from(
                    'hello this is some ascii text\nwith unix new lines'
                )
            )
        ).to.be.true
        expect(
            isProbablyPlainText(
                Buffer.from(
                    'hello this is some ascii text\r\nwith windows new lines'
                )
            )
        ).to.be.true
        expect(
            isProbablyPlainText(
                Buffer.from(
                    'hello this is some ascii text\n\twith unix new lines and tabs'
                )
            )
        ).to.be.true
        expect(
            isProbablyPlainText(
                Buffer.from(
                    'hello this is some ascii text\r\n\twith windows new lines and tabs'
                )
            )
        ).to.be.true
    })

    it('should return false for buffers containing some binary data', () => {
        expect(isProbablyPlainText(Buffer.from('hello this is cedilla: ç'))).to
            .be.false
        expect(
            isProbablyPlainText(
                Buffer.from('hello this is some ascii text with emojis 🌸')
            )
        ).to.be.false

        // random strings of 16 bytes
        expect(
            isProbablyPlainText(
                Buffer.from('717f80f08eb9d88c3931712c0e2be32f', 'hex')
            )
        ).to.be.false
        expect(
            isProbablyPlainText(
                Buffer.from('20e8e218e54254c813b261432b0330d7', 'hex')
            )
        ).to.be.false
    })
})