ccp4.spec.ts

/**
 * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */

import * as CCP4 from '../ccp4/parser'

function createCcp4Data() {
    const data = new Uint8Array(4 * 256 + 6)

    const dv = new DataView(data.buffer)

    dv.setInt8(52 * 4, 'M'.charCodeAt(0))
    dv.setInt8(52 * 4 + 1, 'A'.charCodeAt(0))
    dv.setInt8(52 * 4 + 2, 'P'.charCodeAt(0))
    dv.setInt8(52 * 4 + 3, ' '.charCodeAt(0))

    dv.setInt32(0 * 4, 1) // NC
    dv.setInt32(1 * 4, 2) // NR
    dv.setInt32(2 * 4, 3) // NS

    return data
}

describe('ccp4 reader', () => {
    it('basic', async () => {
        const data = createCcp4Data()
        const parsed = await CCP4.parse(data).run();

        if (parsed.isError) {
            throw new Error(parsed.message)
        }

        const ccp4File = parsed.result;
        const { header } = ccp4File;

        expect(header.NC).toBe(1)
        expect(header.NR).toBe(2)
        expect(header.NS).toBe(3)
    });
});