lightstreamer-adapter
Version:
This package includes the resources needed to write Data Adapters and Metadata Adapters for Lightstreamer Server in a Node.js environment. The adapters will run in a separate process, communicating with the Server through the Adapter Remoting Infrastructu
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JavaScript
/*
Copyright (c) Lightstreamer Srl
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
var DataProvider = require('../lib/lightstreamer-adapter').DataProvider,
TestStream = require('./utils/teststream').TestStream;
var currProtocolVersion = "1.9.1";
function overrideDataWithParameters(isSnapshotAvailable, credentials) {
this.reqRespStream = new TestStream();
// we cannot keep an old stream, because it already has a 'data' handler
// for this.dataProvider, and, after attaching it to a new DataProvider below,
// the handler would have still been invoked
this.dataProvider = new DataProvider(this.reqRespStream, isSnapshotAvailable, credentials);
}
exports.tests = {
setUp: function (callback) {
this.reqRespStream = new TestStream();
this.dataProvider = new DataProvider(this.reqRespStream);
callback();
},
"Missing alignment to 1.7.0" : function(test) {
var oldNotifyStream = new TestStream();
var myThis = this;
test.throws(function() {
overrideDataWithParameters.apply(myThis, [ oldNotifyStream ]);
}, Error);
test.done();
},
"Initialization" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(6);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
test.equal(message.parameters["P1"], "V1");
test.equal(message.parameters["P2"], "V2");
test.equal(message.parameters["keepalive_hint.millis"], null);
test.equal(message.initResponseParams, null);
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|P1|S|V1|S|ARI.version|S|" + currProtocolVersion + "|S|P2|S|V2|S|keepalive_hint.millis|S|8000\r\n");
},
"Initialization with credentials" : function(test) {
var credentials = { user: "my_user", password: "my_password" };
overrideDataWithParameters.apply(this, [ null, credentials ]);
var stream = this.reqRespStream;
test.expect(5);
test.equal(stream.popTestData(), "1|RAC|S|user|S|my_user|S|password|S|my_password|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
test.equal(message.parameters["P1"], "V1");
test.equal(message.parameters["P2"], "V2");
test.equal(message.initResponseParams, null);
response.success();
test.equal(stream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|P1|S|V1|S|ARI.version|S|" + currProtocolVersion + "|S|P2|S|V2\r\n");
},
"Initialization with keepalives" : function(test) {
var stream = this.reqRespStream;
test.expect(7);
test.equal(stream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
test.equal(message.parameters["keepalive_hint.millis"], null);
test.equal(message.keepaliveHint, null);
response.success();
test.equal(stream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
setTimeout(function() {
test.equal(stream.popTestData(), "KEEPALIVE\n");
}, 500);
setTimeout(function() {
test.equal(stream.popTestData(), null);
}, 2500);
setTimeout(function() {
test.equal(stream.popTestData(), "KEEPALIVE\n");
test.done();
}, 3500); // the hint of 3000 is used
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "|S|keepalive_hint.millis|S|3000\r\n");
},
"Initialization 1.8.3 unsuppoorted" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
test.fail();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|1.8.3\r\n");
test.equal(reqRespStream.popTestData(), "ID0|DPI|ED|Unsupported+protocol+version\n");
test.done();
},
"Initialization 1.9.0 refused" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
test.fail();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|1.9.0\r\n");
test.equal(reqRespStream.popTestData(), "ID0|DPI|ED|Unsupported+Proxy+Adapter+version\n");
test.done();
},
"Credential error with close" : function(test) {
var credentials = { user: "my_user", password: "wrong_password" };
overrideDataWithParameters.apply(this, [ null, credentials ]);
var reqRespStream = this.reqRespStream;
test.expect(4);
test.equal(reqRespStream.popTestData(), "1|RAC|S|user|S|my_user|S|password|S|wrong_password|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('closeMessage', function(reason) {
// undocumented event
test.equal(reason, "wrong credentials");
test.equal(reqRespStream.popTestData(), null);
});
reqRespStream.on('error', function(exc) {
test.equal(exc.message.substring(0, 34), "Close requested by the counterpart");
test.done();
});
this.reqRespStream.pushTestData("0|CLOSE|S|reason|S|wrong credentials\r\n");
},
"Failed initialization" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
response.error("An exception", "data");
test.equal(reqRespStream.popTestData(), "ID0|DPI|ED|An+exception\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
},
"Missing initialization" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
// not expected
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
});
this.dataProvider.on('END', function() {
// local event
test.done();
});
test.throws(function () {
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
}, Error);
this.dataProvider.emit("END");
},
"Late initialization" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(3);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('init', function(message, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
test.throws(function () {
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
}, Error);
test.done();
},
"Subscribe with snapshot" : function(test) {
var isSnapshotAvailable = function(itemName) {
test.equal(itemName, "An Item Name");
return true;
};
overrideDataWithParameters.apply(this, [ isSnapshotAvailable, null ]);
var reqRespStream = this.reqRespStream;
test.expect(6);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('subscribe', function(itemName, response) {
test.equal(itemName, "An Item Name");
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
test.equal(reqRespStream.popTestData(), null);
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"Subscribe without snapshot" : function(test) {
var credentials = { user: "my_user", password: "my_password" };
overrideDataWithParameters.apply(this, [ null, credentials ]);
var reqRespStream = this.reqRespStream;
test.expect(4);
test.equal(reqRespStream.popTestData(), "1|RAC|S|user|S|my_user|S|password|S|my_password|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|An Item Name|S|FAKEID\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"Failed subscribe" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(3);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('subscribe', function(itemName, response) {
response.error("An exception", "subscription");
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|EU|An exception\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"Unsubscribe" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(4);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('unsubscribe', function(itemName, response) {
test.equal(itemName, "An Item Name");
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|USB|V\n");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|USB|S|An Item Name\r\n");
},
"Late subscribe" : function(test) {
var reqRespStream = this.reqRespStream;
var dataProvider = this.dataProvider;
var subNum = 0, unsubNum = 0, subNumQ = 0, unsubNumQ = 0;
var sub1DelayedResponse;
test.expect(20);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('init', function(message, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
});
dataProvider.on('subscribe', function(itemName, response) {
subNum++;
test.ok(true, subNum + ") subscribe has been called");
if (subNum === 1) {
// Sub ID1
// we keep the response without forwarding it, hence simulating a delay;
// this will cause the next requests to queue up internally;
// we will forward this response only upon the reception of the third unsubscription;
// we will be notified of requests being enqueued internally thanks to the undocumented
// subscribeInQueue/unsubscribeInQueue events
sub1DelayedResponse = response;
} else if (subNum === 2) {
// Sub ID7 at last
response.success();
test.equals(reqRespStream.popTestData(), "ID7|SUB|V\n");
test.equals(reqRespStream.popTestData().substring(13), "|EOS|S|item1|S|ID7\n");
test.done();
}
});
dataProvider.on('unsubscribeInQueue', function(itemName) {
unsubNumQ++;
test.ok(true, unsubNumQ + ") unsubscribe in queue");
if (unsubNumQ === 3) {
// On unsub ID6 ***
sub1DelayedResponse.success();
}
});
dataProvider.on('unsubscribe', function(itemName, response) {
unsubNum++;
test.ok(true, unsubNum + ") unsubscribe has been called");
if (unsubNum === 1) {
// Called after ***
response.success();
test.equals(reqRespStream.popTestData(), "ID1|SUB|V\n");
test.equals(reqRespStream.popTestData().substring(13), "|EOS|S|item1|S|ID1\n");
test.equals(reqRespStream.popTestData(), "ID2|USB|V\n");
test.equals(reqRespStream.popTestData(), "ID3|SUB|EU|Subscribe request come too late\n");
test.equals(reqRespStream.popTestData(), "ID4|USB|V\n");
test.equals(reqRespStream.popTestData(), "ID5|SUB|EU|Subscribe request come too late\n");
test.equals(reqRespStream.popTestData(), "ID6|USB|V\n");
test.ok(typeof reqRespStream.popTestData() === "undefined");
}
});
dataProvider.on('subscribeInQueue', function(itemName) {
subNumQ++;
test.ok(true, subNumQ + ") subscribe in queue");
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("ID1|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID2|USB|S|item1\n");
this.reqRespStream.pushTestData("ID3|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID4|USB|S|item1\n");
this.reqRespStream.pushTestData("ID5|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID6|USB|S|item1\n");
this.reqRespStream.pushTestData("ID7|SUB|S|item1\n");
},
"Late subscribe first reply on unsubscribe" : function(test) {
var reqRespStream = this.reqRespStream;
var dataProvider = this.dataProvider;
var subNum = 0, unsubNum = 0, subNumQ = 0, unsubNumQ = 0;
var subDelayedResp;
test.expect(21);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('init', function(message, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
});
dataProvider.on('subscribe', function(itemName, response) {
subNum++;
test.ok(true, subNum + ") subscribe has been called");
if (subNum === 1) {
response.success();
test.equals(reqRespStream.popTestData(), "ID1|SUB|V\n");
test.equals(reqRespStream.popTestData().substring(13), "|EOS|S|item1|S|ID1\n");
} else if (subNum === 2) {
// Delay on 2nd sub
subDelayedResp = response;
} else if (subNum === 3) {
// Sub ID7 at last
response.success();
test.equals(reqRespStream.popTestData(), "ID7|SUB|V\n");
test.equals(reqRespStream.popTestData().substring(13), "|EOS|S|item1|S|ID7\n");
test.done();
}
});
dataProvider.on('unsubscribeInQueue', function(itemName) {
unsubNumQ++;
test.ok(true, unsubNumQ + ") unsubscribe in queue");
if (unsubNumQ === 2) {
// On unsub ID6 ***
subDelayedResp.success();
}
});
dataProvider.on('unsubscribe', function(itemName, response) {
unsubNum++;
test.ok(true, unsubNum + ") unsubscribe has been called");
if (unsubNum === 1) {
response.success();
test.equals(reqRespStream.popTestData(), "ID2|USB|V\n");
} else if (unsubNum === 2) {
response.success();
test.equals(reqRespStream.popTestData(), "ID3|SUB|V\n");
test.equals(reqRespStream.popTestData().substring(13), "|EOS|S|item1|S|ID3\n");
test.equals(reqRespStream.popTestData(), "ID4|USB|V\n");
test.equals(reqRespStream.popTestData(), "ID5|SUB|EU|Subscribe request come too late\n");
test.equals(reqRespStream.popTestData(), "ID6|USB|V\n");
test.ok(typeof reqRespStream.popTestData() === "undefined");
}
});
dataProvider.on('subscribeInQueue', function(itemName) {
subNumQ++;
test.ok(true, subNumQ + ") subscribe in queue");
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("ID1|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID2|USB|S|item1\n");
this.reqRespStream.pushTestData("ID3|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID4|USB|S|item1\n");
this.reqRespStream.pushTestData("ID5|SUB|S|item1\n");
this.reqRespStream.pushTestData("ID6|USB|S|item1\n");
this.reqRespStream.pushTestData("ID7|SUB|S|item1\n");
},
"Failure" : function(test) {
var dataProvider = this.dataProvider;
var reqRespStream = this.reqRespStream;
test.expect(3);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('init', function(message, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
dataProvider.failure("An exception");
// note: failure cannot be issued before the channel is fully initialized
test.equal(reqRespStream.popTestData().substring(13), "|FAL|E|An exception\n");
test.done();
});
reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
},
"End of snapshot" : function(test) {
var dataProvider = this.dataProvider;
var reqRespStream = this.reqRespStream;
test.expect(4);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
dataProvider.endOfSnapshot("An Item Name");
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|An Item Name|S|FAKEID\n");
test.done();
});
reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"End of snapshot with an unsubscribed item" : function(test) {
test.expect(1);
test.throws(function () {
this.dataProvider.endOfSnapshot("I'm not subscribed yet");
}, Error);
test.done();
},
"Update by hash" : function(test) {
var fake = "";
var dataProvider = this.dataProvider;
var reqRespStream = this.reqRespStream;
test.expect(5);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
dataProvider.update("AnItemName", true,
{
"field1" : "A string",
"field2" : "",
"field3" : null,
"field4" : 12.4,
"field5" : true,
"field6" : 0,
"field7" : NaN,
"field8" : fake.undef, //fake does not have an undef property
"field9" : false
});
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|AnItemName|S|FAKEID\n");
test.equal(reqRespStream.popTestData().substring(13), "|UD3|S|AnItemName|S|FAKEID|B|1|" +
"S|field1|S|A string|S|field2|S|$|S|field3|S|#|" +
"S|field4|S|12.4|S|field5|S|true|S|field6|S|0|" +
"S|field7|S|NaN|S|field8|S|undefined|S|field9|S|false\n");
test.done();
});
reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
reqRespStream.pushTestData("FAKEID|SUB|S|AnItemName\r\n");
},
"Update by hash with an unsubscribed item" : function(test) {
test.expect(1);
test.throws(function () {
this.dataProvider.update("AnItemName", true, {"field1" : "A string"});
}, Error);
test.done();
},
"Update by hash, then clear snapshot" : function(test) {
var fake = "";
var dataProvider = this.dataProvider;
var reqRespStream = this.reqRespStream;
test.expect(6);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
dataProvider.update("AnItemName", true,
{
"field1" : "A string",
"field2" : "",
"field3" : null,
"field4" : 12.4,
"field5" : true,
"field6" : 0,
"field7" : NaN,
"field8" : fake.undef, //fake does not have an undef property
"field9" : false
});
dataProvider.clearSnapshot("AnItemName");
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|AnItemName|S|FAKEID\n");
test.equal(reqRespStream.popTestData().substring(13), "|UD3|S|AnItemName|S|FAKEID|B|1|" +
"S|field1|S|A string|S|field2|S|$|S|field3|S|#|" +
"S|field4|S|12.4|S|field5|S|true|S|field6|S|0|" +
"S|field7|S|NaN|S|field8|S|undefined|S|field9|S|false\n");
test.equal(reqRespStream.popTestData().substring(13), "|CLS|S|AnItemName|S|FAKEID\n");
test.done();
});
reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
reqRespStream.pushTestData("FAKEID|SUB|S|AnItemName\r\n");
},
"Update a field which supports JSON Patch and diff-match-patch" : function(test) {
var fake = "";
var dataProvider = this.dataProvider;
var reqRespStream = this.reqRespStream;
test.expect(6);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
dataProvider.declareFieldDiffOrder("AnItemName",
{
"field1" : [ "JSONPATCH", "DIFF_MATCH_PATCH" ]
});
dataProvider.update("AnItemName", true,
{
"field1" : "{ val: 1 }"
});
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|AnItemName|S|FAKEID\n");
// EOS is sent immediately upon subscribe() if isSnapshotAvailable is false
test.equal(reqRespStream.popTestData().substring(13), "|DFD|S|AnItemName|S|FAKEID|" +
"S|field1|F|JM\n");
test.equal(reqRespStream.popTestData().substring(13), "|UD3|S|AnItemName|S|FAKEID|B|1|" +
"S|field1|S|{ val: 1 }\n");
test.done();
});
reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
reqRespStream.pushTestData("FAKEID|SUB|S|AnItemName\r\n");
},
"Subscribe with double success" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
this.dataProvider.on('subscribe', function(itemName, response) {
test.equal(itemName, "An Item Name");
response.success();
test.throws(function () {
response.success();
}, Error);
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"Subscribe with double error" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(2);
this.dataProvider.on('subscribe', function(itemName, response) {
test.equal(itemName, "An Item Name");
response.success();
test.throws(function () {
response.error();
}, Error);
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
},
"some activity with close" : function(test) {
var reqRespStream = this.reqRespStream;
test.expect(7);
test.equal(reqRespStream.popTestData(), "1|RAC|S|enableClosePacket|S|true|S|SDK|S|Node.js+Adapter+SDK\n");
this.dataProvider.on('subscribe', function(itemName, response) {
response.success();
test.equal(reqRespStream.popTestData(), "ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\n");
test.equal(reqRespStream.popTestData(), "FAKEID|SUB|V\n");
test.equal(reqRespStream.popTestData().substring(13), "|EOS|S|An Item Name|S|FAKEID\n");
});
this.dataProvider.on('closeMessage', function(reason) {
// undocumented event
test.equal(reason, "keepalive timeout");
test.equal(reqRespStream.popTestData(), null);
});
reqRespStream.on('error', function(exc) {
test.equal(exc.message.substring(0, 34), "Close requested by the counterpart");
test.done();
});
this.reqRespStream.pushTestData("ID0|DPI|S|ARI.version|S|" + currProtocolVersion + "\r\n");
this.reqRespStream.pushTestData("FAKEID|SUB|S|An Item Name\r\n");
this.reqRespStream.pushTestData("0|CLOSE|S|reason|S|keepalive timeout\r\n");
},
};