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ECO-4787: Convert a couple of tests to use interception proxy
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As an example of how to use the proxy and its test suite client class.
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@lawrence-forooghian
lawrence-forooghian committed Jul 30, 2024
1 parent 12efcfc commit 67a1a7f
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Showing 2 changed files with 160 additions and 135 deletions.
85 changes: 50 additions & 35 deletions test/realtime/auth.test.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,12 @@
'use strict';

define(['ably', 'shared_helper', 'async', 'chai'], function (Ably, Helper, async, chai) {
define(['ably', 'shared_helper', 'async', 'chai', 'interception_proxy_client'], function (
Ably,
Helper,
async,
chai,
interceptionProxyClient,
) {
var currentTime;
var exampleTokenDetails;
var exports = {};
Expand Down Expand Up @@ -1167,42 +1173,51 @@ define(['ably', 'shared_helper', 'async', 'chai'], function (Ably, Helper, async
* @spec RTN22
*/
it('mocked_reauth', function (done) {
var helper = this.test.helper,
rest = helper.AblyRest(),
authCallback = function (tokenParams, callback) {
// Request a token (should happen twice)
Helper.whenPromiseSettles(rest.auth.requestToken(tokenParams, null), function (err, tokenDetails) {
if (err) {
helper.closeAndFinish(done, realtime, err);
return;
}
callback(null, tokenDetails);
});
},
realtime = helper.AblyRealtime({ authCallback: authCallback, transports: [helper.bestTransport] });
interceptionProxyClient.intercept(done, (done, interceptionContext) => {
var helper = this.test.helper,
rest = helper.AblyRest(),
authCallback = function (tokenParams, callback) {
// Request a token (should happen twice)
Helper.whenPromiseSettles(rest.auth.requestToken(tokenParams, null), function (err, tokenDetails) {
if (err) {
helper.closeAndFinish(done, realtime, err);
return;
}
callback(null, tokenDetails);
});
},
realtime = helper.AblyRealtime({ authCallback: authCallback, transports: [helper.bestTransport] });

realtime.connection.once('connected', function () {
helper.recordPrivateApi('read.connectionManager.activeProtocol.transport');
var transport = realtime.connection.connectionManager.activeProtocol.transport,
originalSend = transport.send;
helper.recordPrivateApi('replace.transport.send');
/* Spy on transport.send to detect the outgoing AUTH */
transport.send = function (message) {
if (message.action === 17) {
try {
expect(message.auth.accessToken, 'Check AUTH message structure is as expected').to.be.ok;
helper.closeAndFinish(done, realtime);
} catch (err) {
helper.closeAndFinish(done, realtime, err);
realtime.connection.once('connected', function () {
/* Spy on client messages to detect the outgoing AUTH */
interceptionContext.transformClientMessage = ({ deserialized: message }) => {
if (message.action === 17) {
// TODO return value? the original code didn’t call originalSend. We should either:
// - make sure that we always return something (i.e. force it on to callers)
// - make sure that if nothing is returned then the interception proxy client makes this very obvious
// - make sure to clean up outstanding messages when the `intercept`-created `done` is called
//
// I think this is what’s causing this in the logs:
// Interception proxy client: got result of transforming message d814955d-8a15-4c2f-b873-1bd0c3448635 undefined
// and what's hence causing Realtime to send
// message: 'Invalid websocket message (decode failure). (See https://help.ably.io/error/40000 for help.)',
//
// TODO
// should we have a separate "spy" interception proxy API that doesn’t require a return value?
try {
expect(message.auth.accessToken, 'Check AUTH message structure is as expected').to.be.ok;
helper.closeAndFinish(done, realtime);
} catch (err) {
helper.closeAndFinish(done, realtime, err);
}
return null;
} else {
return message;
}
} else {
helper.recordPrivateApi('call.transport.send');
originalSend.call(this, message);
}
};
/* Inject a fake AUTH from realtime */
helper.recordPrivateApi('call.transport.onProtocolMessage');
transport.onProtocolMessage({ action: 17 });
};
/* Inject a fake AUTH from realtime */
interceptionContext.injectMessage(interceptionContext.latestConnectionID, { action: 17 }, false);
});
});
});

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210 changes: 110 additions & 100 deletions test/realtime/connection.test.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,12 @@
'use strict';

define(['ably', 'shared_helper', 'async', 'chai'], function (Ably, Helper, async, chai) {
define(['ably', 'shared_helper', 'async', 'chai', 'interception_proxy_client'], function (
Ably,
Helper,
async,
chai,
interceptionProxyClient,
) {
var expect = chai.expect;
var createPM = Ably.protocolMessageFromDeserialized;

Expand Down Expand Up @@ -185,119 +191,123 @@ define(['ably', 'shared_helper', 'async', 'chai'], function (Ably, Helper, async
* @spec RTN19a2
*/
it('connectionQueuing', function (done) {
var helper = this.test.helper,
realtime = helper.AblyRealtime({ transports: [helper.bestTransport] }),
channel = realtime.channels.get('connectionQueuing'),
connectionManager = realtime.connection.connectionManager;

realtime.connection.once('connected', function () {
helper.recordPrivateApi('read.connectionManager.activeProtocol.transport');
var transport = connectionManager.activeProtocol.transport;
Helper.whenPromiseSettles(channel.attach(), function (err) {
if (err) {
helper.closeAndFinish(done, realtime, err);
return;
}
interceptionProxyClient.intercept(done, (done, interceptionContext) => {
var helper = this.test.helper,
realtime = helper.AblyRealtime({ transports: [helper.bestTransport] }),
channel = realtime.channels.get('connectionQueuing'),
connectionManager = realtime.connection.connectionManager;

let transportSendCallback;
realtime.connection.once('connected', function () {
Helper.whenPromiseSettles(channel.attach(), function (err) {
if (err) {
helper.closeAndFinish(done, realtime, err);
return;
}

helper.recordPrivateApi('replace.transport.send');
/* Sabotage sending the message */
transport.send = function (msg) {
if (msg.action == 15) {
expect(msg.msgSerial).to.equal(0, 'Expect msgSerial to be 0');
let transportSendCallback;

if (!transportSendCallback) {
done(new Error('transport.send override called before transportSendCallback populated'));
}
/* Sabotage sending the message */
interceptionContext.transformClientMessage = (msg) => {
if (msg.deserialized.action == 15) {
expect(msg.deserialized.msgSerial).to.equal(0, 'Expect msgSerial to be 0');

transportSendCallback(null);
}
};
if (!transportSendCallback) {
done(new Error('transport.send override called before transportSendCallback populated'));
}

let publishCallback;
transportSendCallback(null);
}
};

async.series(
[
function (cb) {
transportSendCallback = cb;
let publishCallback;

/* Sabotaged publish */
Helper.whenPromiseSettles(channel.publish('first', null), function (err) {
if (!publishCallback) {
done(new Error('publish completed before publishCallback populated'));
}
publishCallback(err);
});
},
async.series(
[
function (cb) {
transportSendCallback = cb;

// We wait for transport.send to recieve the message that we just
// published before we proceed to disconnecting the transport, to
// make sure that the message got marked as `sendAttempted`.
/* Sabotaged publish */
Helper.whenPromiseSettles(channel.publish('first', null), function (err) {
if (!publishCallback) {
done(new Error('publish completed before publishCallback populated'));
}
publishCallback(err);
});
},

function (cb) {
async.parallel(
[
function (cb) {
publishCallback = function (err) {
try {
expect(!err, 'Check publish happened (eventually) without err').to.be.ok;
} catch (err) {
cb(err);
return;
}
cb();
};
},
function (cb) {
/* After the disconnect, on reconnect, spy on transport.send again */
helper.recordPrivateApi('listen.connectionManager.transport.pending');
connectionManager.once('transport.pending', function (transport) {
var oldSend = transport.send;
// We wait for transport.send to recieve the message that we just
// published before we proceed to disconnecting the transport, to
// make sure that the message got marked as `sendAttempted`.

helper.recordPrivateApi('replace.transport.send');
transport.send = function (msg, msgCb) {
if (msg.action === 15) {
if (msg.messages[0].name === 'first') {
try {
expect(msg.msgSerial).to.equal(0, 'Expect msgSerial of original message to still be 0');
expect(msg.messages.length).to.equal(
1,
'Expect second message to not have been merged with the attempted message',
);
} catch (err) {
cb(err);
return;
}
} else if (msg.messages[0].name === 'second') {
try {
expect(msg.msgSerial).to.equal(1, 'Expect msgSerial of new message to be 1');
} catch (err) {
cb(err);
return;
}
cb();
}
function (cb) {
async.parallel(
[
function (cb) {
publishCallback = function (err) {
try {
expect(!err, 'Check publish happened (eventually) without err').to.be.ok;
} catch (err) {
cb(err);
return;
}
helper.recordPrivateApi('call.transport.send');
oldSend.call(transport, msg, msgCb);
cb();
};
channel.publish('second', null);
});
},
function (cb) {
/* After the disconnect, on reconnect, spy on transport.send again */
helper.recordPrivateApi('listen.connectionManager.transport.pending');
connectionManager.once('transport.pending', function (transport) {
// TODO does the identity of this transport matter, and can we replace the `transport.pending` check with something external too (e.g. detecting a new connection)? perhaps let's have an EventEmitter interface on the interception context that says when there's a new connection or something
interceptionContext.transformClientMessage = function (msg) {
if (msg.deserialized.action === 15) {
if (msg.deserialized.messages[0].name === 'first') {
try {
expect(msg.deserialized.msgSerial).to.equal(
0,
'Expect msgSerial of original message to still be 0',
);
expect(msg.deserialized.messages.length).to.equal(
1,
'Expect second message to not have been merged with the attempted message',
);
} catch (err) {
cb(err);
return msg.deserialized;
}
} else if (msg.deserialized.messages[0].name === 'second') {
try {
expect(msg.deserialized.msgSerial).to.equal(
1,
'Expect msgSerial of new message to be 1',
);
} catch (err) {
cb(err);
return msg.deserialized;
}
cb();
}
}

// preserve the message
return msg.deserialized;
};
channel.publish('second', null);
});

/* Disconnect the transport (will automatically reconnect and resume) () */
helper.recordPrivateApi('call.connectionManager.disconnectAllTransports');
connectionManager.disconnectAllTransports();
},
],
cb,
);
/* Disconnect the transport (will automatically reconnect and resume) () */
helper.recordPrivateApi('call.connectionManager.disconnectAllTransports');
connectionManager.disconnectAllTransports();
},
],
cb,
);
},
],
function (err) {
helper.closeAndFinish(done, realtime, err);
},
],
function (err) {
helper.closeAndFinish(done, realtime, err);
},
);
);
});
});
});
});
Expand Down

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