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/* gpgme.js - Javascript integration for gpgme
 * Copyright (C) 2018 Bundesamt für Sicherheit in der Informationstechnik
 *
 * This file is part of GPGME.
 *
 * GPGME is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * GPGME is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, see <https://www.gnu.org/licenses/>.
 * SPDX-License-Identifier: LGPL-2.1+
 *
 * Author(s):
 *     Maximilian Krambach <[email protected]>
 */

/* global describe, it, before, expect, Gpgmejs */
/* global bigString, inputvalues, sabotageMsg, binaryData, filename_files */

describe('Decryption', function () {
    let context = null;
    const good_fpr = inputvalues.encrypt.good.fingerprint;

    before(function (done){
        const prm = Gpgmejs.init({ timeout:2000 });
        prm.then(function (gpgmejs){
            context = gpgmejs;
            done();
        });
    });

    it('Decryption of random string fails', function (done) {
        let data = bigString(20 * 1024);
        context.decrypt({ data: data }).then(
            function (){},
            function (error){
                expect(error).to.be.an('error');
                expect(error.code).to.equal('GNUPG_ERROR');
                done();
            });
    });

    it('Decryption of slightly corrupted message fails', function (done) {
        const data = bigString(10000);
        context.encrypt({ data: data, publicKeys:good_fpr }).then(
            function (enc){
                context.decrypt({ data: sabotageMsg(enc.data) }).then(
                    function (){},
                    function (error){
                        expect(error).to.be.an('error');
                        expect(error.code).to.equal('GNUPG_ERROR');
                        done();
                    });
            });
    }).timeout(5000);


    it('decrypt/verify operations return proper information', function (done){
        const data = inputvalues.encryptSignedMessage;
        context.decrypt({ data: data }).then(function (result){
            expect(result).to.be.an('object');
            expect(result.signatures).to.be.an('object');
            expect(result.signatures.all_valid).to.be.true;
            expect(result.signatures.count).to.equal(1);
            expect(result.signatures.signatures.good).to.be.an('array');
            expect(
                result.signatures.signatures.good[0].fingerprint).to.equal(
                good_fpr);
            done();
        });
    });

    it('decrypt of a png, result as base64', function (done){
        const data = binaryData.encryptedArmored;
        context.decrypt({ data: data, expect: 'base64' })
            .then(function (result){
                expect(result.data).to.be.a('String');
                expect(result.data).to.equal(binaryData.base64);
                expect(result.format).to.equal('base64');
                done();
            });
    });

    it('decrypt of a png, result as Uint8Array', function (done){
        const data = binaryData.encryptedArmored;
        context.decrypt({ data: data, expect: 'uint8' })
            .then(function (result){
                expect(result.data).to.be.an('Uint8Array');
                expect(result.format).to.equal('uint8');
                done();
            });
    });

    for (let i=0; i < filename_files.length; i++) {
        it (
            'decrypted file_names keep correct encoding (' + i + ')',
            function (done){
                context.decrypt({ data:filename_files[i].data })
                    .then(function (answer){
                        expect(answer.file_name).to.equal(
                            filename_files[i].name);
                        done();
                    });
            });
    }

});