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node-red/test/unit/@node-red/runtime/lib/nodes/Node_spec.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
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*
* 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.
**/
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var should = require("should");
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var sinon = require('sinon');
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var NR_TEST_UTILS = require("nr-test-utils");
var RedNode = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");
var Log = NR_TEST_UTILS.require("@node-red/util").log;
var hooks = NR_TEST_UTILS.require("@node-red/runtime/lib/hooks");
var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
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describe('Node', function() {
describe('#constructor',function() {
it('is called with an id and a type',function() {
var n = new RedNode({id:'123',type:'abc'});
n.should.have.property('id','123');
n.should.have.property('type','abc');
n.should.not.have.property('name');
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n.wires.should.be.empty();
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});
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it('is called with an id, a type and a name',function() {
var n = new RedNode({id:'123',type:'abc',name:'barney'});
n.should.have.property('id','123');
n.should.have.property('type','abc');
n.should.have.property('name','barney');
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n.wires.should.be.empty();
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});
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it('is called with an id, a type and some wires',function() {
var n = new RedNode({id:'123',type:'abc',wires:['123','456']});
n.should.have.property('id','123');
n.should.have.property('type','abc');
n.should.not.have.property('name');
n.wires.should.have.length(2);
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});
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});
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describe('#close', function() {
it('emits close event when closed',function(done) {
var n = new RedNode({id:'123',type:'abc'});
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n.on('close',function() {
done();
});
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n.close();
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});
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it('returns a promise when provided a callback with a done parameter',function(testdone) {
var n = new RedNode({id:'123',type:'abc'});
n.on('close',function(done) {
setTimeout(function() {
done();
},50);
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});
var p = n.close();
should.exist(p);
p.then(function() {
testdone();
});
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});
it('accepts a callback with "removed" and "done" parameters', function(testdone) {
var n = new RedNode({id:'123',type:'abc'});
var receivedRemoved;
n.on('close',function(removed,done) {
receivedRemoved = removed;
setTimeout(function() {
done();
},50);
});
var p = n.close(true);
should.exist(p);
(receivedRemoved).should.be.true();
p.then(function() {
testdone();
});
})
it('allows multiple close handlers to be registered',function(testdone) {
var n = new RedNode({id:'123',type:'abc'});
var callbacksClosed = 0;
n.on('close',function(done) {
setTimeout(function() {
callbacksClosed++;
done();
},50);
});
n.on('close',function(done) {
setTimeout(function() {
callbacksClosed++;
done();
},75);
});
n.on('close',function() {
callbacksClosed++;
});
var p = n.close();
should.exist(p);
p.then(function() {
callbacksClosed.should.eql(3);
testdone();
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}).catch(function(e) {
testdone(e);
});
});
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});
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describe('#receive', function() {
it('emits input event when called', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var message = {payload:"hello world"};
n.on('input',function(msg) {
should.deepEqual(msg,message);
done();
});
n.receive(message);
});
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it('writes metric info with undefined msg', function(done){
var n = new RedNode({id:'123',type:'abc'});
n.on('input',function(msg) {
(typeof msg).should.not.be.equal("undefined");
(typeof msg._msgid).should.not.be.equal("undefined");
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done();
});
n.receive();
});
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it('writes metric info with null msg', function(done){
var n = new RedNode({id:'123',type:'abc'});
n.on('input',function(msg) {
(typeof msg).should.not.be.equal("undefined");
(typeof msg._msgid).should.not.be.equal("undefined");
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done();
});
n.receive(null);
});
it('handles thrown errors', function(done) {
var n = new RedNode({id:'123',type:'abc'});
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sinon.stub(n,"error").callsFake(function(err,msg) {});
var message = {payload:"hello world"};
n.on('input',function(msg) {
throw new Error("test error");
});
n.receive(message);
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setTimeout(function() {
n.error.called.should.be.true();
n.error.firstCall.args[1].should.equal(message);
done();
},50);
});
it('calls parent flow handleComplete when callback provided', function(done) {
var n = new RedNode({id:'123',type:'abc', _flow: {
handleComplete: function(node,msg) {
try {
msg.should.deepEqual(message);
done();
} catch(err) {
done(err);
}
}
}});
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var message = {payload:"hello world"};
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n.on('input',function(msg, nodeSend, nodeDone) {
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nodeDone();
});
n.receive(message);
});
it('triggers onComplete hook when done callback provided', function(done) {
var handleCompleteCalled = false;
var hookCalled = false;
var n = new RedNode({id:'123',type:'abc', _flow: {
handleComplete: function(node,msg) {
handleCompleteCalled = true;
}
}});
var hookError;
hooks.add("onComplete",function(completeEvent) {
hookCalled = true;
try {
handleCompleteCalled.should.be.false("onComplete should be called before handleComplete")
should.not.exist(completeEvent.error);
completeEvent.msg.should.deepEqual(message);
completeEvent.node.id.should.eql("123");
completeEvent.node.node.should.equal(n);
} catch(err) {
hookError = err;
}
})
var message = {payload:"hello world"};
n.on('input',function(msg, nodeSend, nodeDone) {
nodeDone();
});
n.receive(message);
setTimeout(function() {
if (hookError) {
done(hookError);
return
}
try {
hookCalled.should.be.true("onComplete hook should be called");
handleCompleteCalled.should.be.true("handleComplete should be called");
done();
} catch(err) {
done(err);
}
})
});
it('triggers onComplete hook when done callback provided - with error', function(done) {
var handleCompleteCalled = false;
var hookCalled = false;
var errorReported = false;
var n = new RedNode({id:'123',type:'abc', _flow: {
handleComplete: function(node,msg) {
handleCompleteCalled = true;
}
}});
var hookError;
hooks.add("onComplete",function(completeEvent) {
hookCalled = true;
try {
handleCompleteCalled.should.be.false("onComplete should be called before handleComplete")
should.exist(completeEvent.error);
completeEvent.error.toString().should.equal("Error: test error")
completeEvent.msg.should.deepEqual(message);
completeEvent.node.id.should.eql("123");
completeEvent.node.node.should.equal(n);
} catch(err) {
hookError = err;
}
})
var message = {payload:"hello world"};
n.on('input',function(msg, nodeSend, nodeDone) {
nodeDone(new Error("test error"));
});
n.error = function(err,msg) {
errorReported = true;
}
n.receive(message);
setTimeout(function() {
if (hookError) {
done(hookError);
return
}
try {
hookCalled.should.be.true("onComplete hook should be called");
handleCompleteCalled.should.be.false("handleComplete should not be called");
done();
} catch(err) {
done(err);
}
})
});
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it('logs error if callback provides error', function(done) {
var n = new RedNode({id:'123',type:'abc'});
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sinon.stub(n,"error").callsFake(function(err,msg) {});
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var message = {payload:"hello world"};
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n.on('input',function(msg, nodeSend, nodeDone) {
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nodeDone(new Error("test error"));
setTimeout(function() {
try {
n.error.called.should.be.true();
n.error.firstCall.args[0].toString().should.equal("Error: test error");
n.error.firstCall.args[1].should.equal(message);
done();
} catch(err) {
done(err);
}
},50);
});
n.receive(message);
});
it("triggers hooks when receiving a message", function(done) {
var hookErrors = [];
var messageReceived = false;
var hooksCalled = [];
hooks.add("onReceive", function(receiveEvent) {
hooksCalled.push("onReceive")
try {
messageReceived.should.be.false("Message should not have been received before onReceive")
receiveEvent.msg.should.be.exactly(message);
receiveEvent.destination.id.should.equal("123")
receiveEvent.destination.node.should.equal(n)
} catch(err) {
hookErrors.push(err);
}
})
hooks.add("postReceive", function(receiveEvent) {
hooksCalled.push("postReceive")
try {
messageReceived.should.be.true("Message should have been received before postReceive")
receiveEvent.msg.should.be.exactly(message);
receiveEvent.destination.id.should.equal("123")
receiveEvent.destination.node.should.equal(n)
} catch(err) {
hookErrors.push(err);
}
})
var n = new RedNode({id:'123',type:'abc'});
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var message = {payload:"hello world"};
n.on('input',function(msg) {
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messageReceived = true;
try {
should.strictEqual(this,n);
hooksCalled.should.eql(["onReceive"])
should.deepEqual(msg,message);
} catch(err) {
hookErrors.push(err)
}
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});
n.receive(message);
setTimeout(function() {
hooks.clear();
if (hookErrors.length > 0) {
done(hookErrors[0])
} else {
done();
}
},10);
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});
describe("errors thrown by hooks are reported", function() {
before(function() {
hooks.add("onReceive",function(recEvent) {
if (recEvent.msg.payload === "trigger-onReceive") {
throw new Error("onReceive Error")
}
})
hooks.add("postReceive",function(recEvent) {
if (recEvent.msg.payload === "trigger-postReceive") {
throw new Error("postReceive Error")
}
})
})
after(function() {
hooks.clear();
})
function testHook(hook, msgExpected, done) {
var messageReceived = false;
var errorReceived;
var n = new RedNode({id:'123',type:'abc'});
var message = {payload:"trigger-"+hook};
n.on('input',function(msg) {
messageReceived = true;
});
n.error = function (err) {
errorReceived = err;
}
n.receive(message);
setTimeout(function() {
try {
messageReceived.should.equal(msgExpected,`Hook ${hook} messageReceived expected ${msgExpected} actual ${messageReceived}`);
should.exist(errorReceived);
errorReceived.toString().should.containEql(hook)
done()
} catch(err) {
done(err);
}
},10);
}
it("onReceive", function(done) { testHook("onReceive", false, done)})
it("postReceive", function(done) { testHook("postReceive", true, done)})
})
});
describe("hooks can halt receive", function() {
before(function() {
hooks.add("onReceive",function(recEvent) {
if (recEvent.msg.payload === "trigger-onReceive") {
return false;
}
})
})
after(function() {
hooks.clear();
})
function testHook(hook, msgExpected, done) {
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var messageReceived = false;
var errorReceived;
var n = new RedNode({id:'123',type:'abc'});
var message = {payload:"trigger-"+hook};
n.on('input',function(msg) {
messageReceived = true;
});
n.error = function (err) {
errorReceived = err;
}
n.receive(message);
setTimeout(function() {
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try {
messageReceived.should.equal(msgExpected,`Hook ${hook} messageReceived expected ${msgExpected} actual ${messageReceived}`);
should.not.exist(errorReceived);
done()
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} catch(err) {
done(err);
}
},10);
}
it("onReceive", function(done) { testHook("onReceive", false, done)})
})
describe('#send', function() {
it('emits a single message', function(done) {
var flow = {
send: (sendEvents) => {
try {
sendEvents.should.have.length(1);
sendEvents[0].msg.should.equal(message);
sendEvents[0].destination.should.eql({id:"n2", node: undefined});
sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0})
done();
} catch(err) {
done(err);
}
},
};
var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
var message = {payload:"hello world"};
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n1.send(message);
});
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it('emits a message with callback provided send', function(done) {
var flow = {
handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
handleComplete: (node,msg) => {},
send: (sendEvents) => {
try {
sendEvents.should.have.length(1);
sendEvents[0].msg.should.equal(message);
sendEvents[0].destination.should.eql({id:"n2", node: undefined});
sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0});
sendEvents[0].cloneMessage.should.be.false();
done();
} catch(err) {
done(err);
}
},
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};
var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
var message = {payload:"hello world"};
n1.on('input',function(msg,nodeSend,nodeDone) {
nodeSend(msg);
nodeDone();
});
n1.receive(message);
});
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it('emits multiple messages on a single output', function(done) {
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var flow = {
handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
send: (sendEvents) => {
try {
sendEvents.should.have.length(2);
sendEvents[0].msg.should.equal(messages[0]);
sendEvents[0].destination.should.eql({id:"n2", node: undefined});
sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0});
sendEvents[0].cloneMessage.should.be.false();
sendEvents[1].msg.should.equal(messages[1]);
sendEvents[1].destination.should.eql({id:"n2", node: undefined});
sendEvents[1].source.should.eql({id:"n1", node: n1, port: 0});
sendEvents[1].cloneMessage.should.be.true();
done();
} catch(err) {
done(err);
}
},
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};
var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
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var messages = [
{payload:"hello world"},
{payload:"hello world again"}
];
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n1.send([messages]);
});
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it('emits messages to multiple outputs', function(done) {
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var flow = {
handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
send: (sendEvents) => {
try {
sendEvents.should.have.length(3);
sendEvents[0].msg.should.equal(messages[0]);
sendEvents[0].destination.should.eql({id:"n2", node: undefined});
sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0});
sendEvents[0].cloneMessage.should.be.false();
should.exist(sendEvents[0].msg._msgid);
sendEvents[1].msg.should.equal(messages[2]);
sendEvents[1].destination.should.eql({id:"n4", node: undefined});
sendEvents[1].source.should.eql({id:"n1", node: n1, port: 2})
sendEvents[1].cloneMessage.should.be.true();
should.exist(sendEvents[1].msg._msgid);
sendEvents[2].msg.should.equal(messages[2]);
sendEvents[2].destination.should.eql({id:"n5", node: undefined});
sendEvents[2].source.should.eql({id:"n1", node: n1, port: 2})
sendEvents[2].cloneMessage.should.be.true();
should.exist(sendEvents[2].msg._msgid);
sendEvents[0].msg._msgid.should.eql(sendEvents[1].msg._msgid)
sendEvents[1].msg._msgid.should.eql(sendEvents[2].msg._msgid)
done();
} catch(err) {
done(err);
}
}
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};
var n1 = new RedNode({_flow:flow, id:'n1',type:'abc',wires:[['n2'],['n3'],['n4','n5']]});
var n2 = new RedNode({_flow:flow, id:'n2',type:'abc'});
var n3 = new RedNode({_flow:flow, id:'n3',type:'abc'});
var n4 = new RedNode({_flow:flow, id:'n4',type:'abc'});
var n5 = new RedNode({_flow:flow, id:'n5',type:'abc'});
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var messages = [
{payload:"hello world"},
null,
{payload:"hello world again"}
];
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var rcvdCount = 0;
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n1.send(messages);
});
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it('emits no messages', function(done) {
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var flow = {
handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
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getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
};
var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
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n2.on('input',function(msg) {
should.fail(null,null,"unexpected message");
});
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setTimeout(function() {
done();
}, 200);
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n1.send();
});
// it('emits messages without cloning req or res', function(done) {
// var flow = {
// getNode: (id) => { return {'n1':n1,'n2':n2,'n3':n3}[id]},
// send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })}
// };
// var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[[['n2'],['n3']]]});
// var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
// var n3 = new RedNode({_flow:flow,id:'n3',type:'abc'});
//
// var req = {};
// var res = {};
// var cloned = {};
// var message = {payload: "foo", cloned: cloned, req: req, res: res};
//
// var rcvdCount = 0;
//
// // first message to be sent, so should not be cloned
// n2.on('input',function(msg) {
// should.deepEqual(msg, message);
// msg.cloned.should.be.exactly(message.cloned);
// msg.req.should.be.exactly(message.req);
// msg.res.should.be.exactly(message.res);
// rcvdCount += 1;
// if (rcvdCount == 2) {
// done();
// }
// });
//
// // second message to be sent, so should be cloned
// // message uuids wont match since we've cloned
// n3.on('input',function(msg) {
// msg.payload.should.equal(message.payload);
// msg.cloned.should.not.be.exactly(message.cloned);
// msg.req.should.be.exactly(message.req);
// msg.res.should.be.exactly(message.res);
// rcvdCount += 1;
// if (rcvdCount == 2) {
// done();
// }
// });
//
// n1.send(message);
// });
// it("logs the uuid for all messages sent", function(done) {
// var logHandler = {
// msgIds:[],
// messagesSent: 0,
// emit: function(event, msg) {
// if (msg.event == "node.abc.send" && msg.level == Log.METRIC) {
// this.messagesSent++;
// this.msgIds.push(msg.msgid);
// (typeof msg.msgid).should.not.be.equal("undefined");
// }
// }
// };
//
// Log.addHandler(logHandler);
// var flow = {
// getNode: (id) => { return {'n1':sender,'n2':receiver1,'n3':receiver2}[id]},
// send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })}
// };
//
// var sender = new RedNode({_flow:flow,id:'n1',type:'abc', wires:[['n2', 'n3']]});
// var receiver1 = new RedNode({_flow:flow,id:'n2',type:'abc'});
// var receiver2 = new RedNode({_flow:flow,id:'n3',type:'abc'});
// sender.send({"some": "message"});
// setTimeout(function() {
// try {
// logHandler.messagesSent.should.equal(1);
// should.exist(logHandler.msgIds[0])
// Log.removeHandler(logHandler);
// done();
// } catch(err) {
// Log.removeHandler(logHandler);
// done(err);
// }
// },50)
// })
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});
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describe('#log', function() {
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it('produces a log message', function(done) {
var n = new RedNode({id:'123',type:'abc',z:'789', _flow: {log:function(msg) { loginfo = msg;}}});
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var loginfo = {};
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n.log("a log message");
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should.deepEqual({level:Log.INFO, id:n.id,
type:n.type, msg:"a log message",z:'789'}, loginfo);
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done();
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});
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it('produces a log message with a name', function(done) {
var n = new RedNode({id:'123', type:'abc', name:"barney", z:'789', _flow: {log:function(msg) { loginfo = msg;}}});
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var loginfo = {};
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n.log("a log message");
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should.deepEqual({level:Log.INFO, id:n.id, name: "barney",
type:n.type, msg:"a log message",z:'789'}, loginfo);
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done();
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});
});
describe('#warn', function() {
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it('produces a warning message', function(done) {
var n = new RedNode({id:'123',type:'abc',z:'789', _flow: {log:function(msg) { loginfo = msg;}}});
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var loginfo = {};
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n.warn("a warning");
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should.deepEqual({level:Log.WARN, id:n.id,
type:n.type, msg:"a warning",z:'789'}, loginfo);
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done();
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});
});
describe('#error', function() {
it('handles a null error message', function(done) {
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var flow = {
handleError: sinon.stub(),
log:sinon.stub()
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}
var n = new RedNode({_flow:flow, id:'123',type:'abc',z:'789'});
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var message = {a:1};
n.error(null,message);
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flow.handleError.called.should.be.true();
flow.handleError.args[0][0].should.eql(n);
flow.handleError.args[0][1].should.eql("");
flow.handleError.args[0][2].should.eql(message);
done();
});
it('produces an error message', function(done) {
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var flow = {
handleError: sinon.stub(),
log:sinon.stub()
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}
var n = new RedNode({_flow:flow, id:'123',type:'abc',z:'789'});
var message = {a:2};
n.error("This is an error",message);
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flow.handleError.called.should.be.true();
flow.handleError.args[0][0].should.eql(n);
flow.handleError.args[0][1].should.eql("This is an error");
flow.handleError.args[0][2].should.eql(message);
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done();
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});
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});
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describe('#metric', function() {
it('produces a metric message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
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sinon.stub(Log, 'log').callsFake(function(msg) {
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loginfo = msg;
});
var msg = {payload:"foo", _msgid:"987654321"};
n.metric("test.metric",msg,"15mb");
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should.deepEqual({value:"15mb", level:Log.METRIC, nodeid:n.id,
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event:"node.abc.test.metric",msgid:"987654321"}, loginfo);
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Log.log.restore();
done();
});
});
describe('#metric', function() {
it('returns metric value if eventname undefined', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
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sinon.stub(Log, 'log').callsFake(function(msg) {
loginfo = msg;
});
var msg = {payload:"foo", _msgid:"987654321"};
var m = n.metric(undefined,msg,"15mb");
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m.should.be.a.Boolean();
Log.log.restore();
done();
});
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it('returns not defined if eventname defined', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
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sinon.stub(Log, 'log').callsFake(function(msg) {
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loginfo = msg;
});
var msg = {payload:"foo", _msgid:"987654321"};
var m = n.metric("info",msg,"15mb");
should(m).be.undefined;
Log.log.restore();
done();
});
});
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describe('#status', function() {
it('publishes status', function(done) {
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var flow = {
handleStatus: sinon.stub()
}
var n = new RedNode({_flow:flow,id:'123',type:'abc'});
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var status = {fill:"green",shape:"dot",text:"connected"};
n.status(status);
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flow.handleStatus.called.should.be.true();
flow.handleStatus.args[0][0].should.eql(n);
flow.handleStatus.args[0][1].should.eql(status);
done();
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});
it('publishes status for plain string', function(done) {
var flow = { handleStatus: sinon.stub() }
var n = new RedNode({_flow:flow,id:'123',type:'abc'});
n.status("text status");
flow.handleStatus.called.should.be.true();
flow.handleStatus.args[0][0].should.eql(n);
flow.handleStatus.args[0][1].should.eql({text:"text status"});
done();
});
it('publishes status for plain boolean', function(done) {
var flow = { handleStatus: sinon.stub() }
var n = new RedNode({_flow:flow,id:'123',type:'abc'});
n.status(false);
flow.handleStatus.called.should.be.true();
flow.handleStatus.args[0][0].should.eql(n);
flow.handleStatus.args[0][1].should.eql({text:"false"});
done();
});
it('publishes status for plain number', function(done) {
var flow = { handleStatus: sinon.stub() }
var n = new RedNode({_flow:flow,id:'123',type:'abc'});
n.status(123);
flow.handleStatus.called.should.be.true();
flow.handleStatus.args[0][0].should.eql(n);
flow.handleStatus.args[0][1].should.eql({text:"123"});
done();
});
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});
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});