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node-red/test/editor/editor_helper.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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 when = require("when");
var http = require('http');
var express = require("express");
var fs = require('fs-extra');
var path = require('path');
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var app = express();
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var RED = require("nr-test-utils").require("node-red/lib/red.js");
var utilPage = require("./pageobjects/util/util_page");
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var server;
var homeDir = './test/resources/home';
var address = '127.0.0.1';
var listenPort = 0; // use ephemeral port
var url;
/*
* Set false when you need a flow to reproduce the failed test case.
* The flow file is under "homeDir" defined above.
*/
var isDeleteFlow = true;
function getFlowFilename() {
var orig = Error.prepareStackTrace;
var err = new Error();
Error.prepareStackTrace = function (err, stack) {
return stack;
};
// Two level higher caller is the actual caller (e.g. a caller of startServer).
var filepath = err.stack[2].getFileName();
var filename = path.basename(filepath, ".js");
Error.prepareStackTrace = orig;
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var flowFile = 'flows_' + filename + '.json';
return flowFile;
}
function cleanup(flowFile) {
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var credentialFile = flowFile.replace(/\.json$/, '') + '_cred.json';
deleteFile(homeDir + "/" + flowFile);
deleteFile(homeDir + "/." + flowFile + ".backup");
deleteFile(homeDir + "/" + credentialFile);
deleteFile(homeDir + "/." + credentialFile + ".backup");
deleteFile(homeDir + "/package.json");
deleteFile(homeDir + "/lib/flows");
deleteFile(homeDir + "/lib");
}
function deleteFile(flowFile) {
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try {
fs.statSync(flowFile);
if (isDeleteFlow) {
fs.unlinkSync(flowFile);
}
} catch (e) {}
}
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module.exports = {
startServer: function() {
try{
utilPage.init();
// Name a flow file including caller filename so that multiple Node-RED servers can run simultaneously.
// Call this method here because retrieving the caller filename by call stack.
var flowFilename = getFlowFilename();
browser.windowHandleMaximize();
browser.call(function () {
return new Promise(function(resolve, reject) {
cleanup(flowFilename);
server = http.createServer(app);
var settings = {
httpAdminRoot: "/",
httpNodeRoot: "/api",
userDir: homeDir,
flowFile: flowFilename,
functionGlobalContext: { }, // enables global context
SKIP_BUILD_CHECK: true,
logging: {console: {level:'off'}}
};
RED.init(server, settings);
app.use(settings.httpAdminRoot,RED.httpAdmin);
app.use(settings.httpNodeRoot,RED.httpNode);
server.listen(listenPort, address);
server.on('listening', function() {
var port = server.address().port;
url = 'http://' + address + ':' + port;
});
RED.start().then(function() {
resolve();
});
});
});
browser.url(url);
browser.waitForExist(".red-ui-palette-node[data-palette-type='inject']");
} catch (err) {
console.log(err);
throw err;
}
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},
stopServer: function(done) {
try {
// Call this method here because retrieving the caller filename by call stack.
var flowFilename = getFlowFilename();
browser.call(function () {
browser.close(); // need to call this inside browser.call().
return when.promise(function(resolve, reject) {
if (server) {
RED.stop().then(function() {
server.close(function() {
cleanup(flowFilename);
resolve();
});
});
} else {
cleanup(flowFilename);
resolve();
}
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});
});
} catch (err) {
console.log(err);
throw err;
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}
},
url: function() {
return url;
},
red: function() {
return RED;
},
};