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group_session.test.js
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group_session.test.js
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const { GroupSession, InboundGroupSession } = require('../pkg/vodozemac.js');
const PICKLE_KEY = "DEFAULT_PICKLE_KEY_1234567890___";
describe('Megolm Session', function() {
it('should be created successfully', function() {
const session = new GroupSession();
const inbound = new InboundGroupSession(session.session_key);
expect(inbound.session_id).not.toBe("");
expect(inbound.session_id).toEqual(session.session_id);
});
it('should tell us the current message index', function() {
const session = new GroupSession();
let inbound = new InboundGroupSession(session.session_key);
expect(session.message_index).toBe(0);
expect(inbound.first_known_index).toBe(0);
session.encrypt("Test");
inbound = new InboundGroupSession(session.session_key);
expect(session.message_index).toBe(1);
expect(inbound.first_known_index).toBe(1);
});
it('should let us pickle the outbound group session', function() {
const session = new GroupSession();
const pickled = session.pickle(PICKLE_KEY);
const unpickled = GroupSession.from_pickle(pickled, PICKLE_KEY);
expect(session.session_id).toEqual(unpickled.session_id);
});
it('should let us pickle the inbound group session', function() {
const outbound = new GroupSession();
const session = new InboundGroupSession(outbound.session_key);
const pickled = session.pickle(PICKLE_KEY);
const unpickled = InboundGroupSession.from_pickle(pickled, PICKLE_KEY);
expect(session.session_id).toEqual(unpickled.session_id);
});
it('should throw an exception if unpickling fails', function() {
expect(() => GroupSession.from_pickle("", PICKLE_KEY)).toThrow();
expect(() => InboundGroupSession.from_pickle("", PICKLE_KEY)).toThrow();
});
it('should throw an exception if decryption fails', function() {
const outbound = new GroupSession();
const session = new InboundGroupSession(outbound.session_key);
expect(() => session.decrypt("")).toThrow();
});
it('should let us encrypt and decrypt messages', function() {
let plaintext = "It's a secret to everybody"
const outbound = new GroupSession();
const session = new InboundGroupSession(outbound.session_key);
let encrypted = outbound.encrypt(plaintext);
let { plaintext: decrypted, message_index } = session.decrypt(encrypted);
expect(plaintext).toEqual(decrypted);
expect(message_index).toEqual(0);
plaintext = "Another secret";
encrypted = outbound.encrypt(plaintext);
let { plaintext: decrypted2, message_index: message_index2 } = session.decrypt(encrypted);
expect(plaintext).toEqual(decrypted2);
expect(message_index2).toEqual(1);
});
it('should let us export inbound group sessions', function() {
const plaintext = "It's a secret to everybody"
const outbound = new GroupSession();
const session = new InboundGroupSession(outbound.session_key);
const exported = session.export_at(0);
const imported = InboundGroupSession.import(exported);
expect(session.session_id).toEqual(imported.session_id);
let encrypted = outbound.encrypt(plaintext);
let { plaintext: decrypted, message_index } = imported.decrypt(encrypted);
expect(plaintext).toEqual(decrypted);
expect(message_index).toBe(0);
});
});

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