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node-red/test/unit/@node-red/util/lib/exec_spec.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 should = require("should");
var sinon = require("sinon");
var path = require("path");
var EventEmitter = require("events").EventEmitter;
var child_process = require('child_process');
var NR_TEST_UTILS = require("nr-test-utils");
var events = NR_TEST_UTILS.require("@node-red/util/lib/events");
var exec = NR_TEST_UTILS.require("@node-red/util/lib/exec");
describe("runtime/exec", function() {
var logEvents;
var mockProcess;
const eventLogHandler = function(ev) {
logEvents.push(ev);
}
beforeEach(function() {
logEvents = [];
events.on("event-log", eventLogHandler);
mockProcess = new EventEmitter();
mockProcess.stdout = new EventEmitter();
mockProcess.stderr = new EventEmitter();
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sinon.stub(child_process,'spawn').callsFake(function(command,args,options) {
mockProcess._args = {command,args,options};
return mockProcess;
});
});
afterEach(function() {
events.removeListener("event-log", eventLogHandler);
if (child_process.spawn.restore) {
child_process.spawn.restore();
}
});
it("runs command and resolves on success - no emit", function(done) {
var command = "cmd";
var args = [1,2,3];
var opts = { a: true };
exec.run(command,args,opts).then(function(result) {
command.should.eql(mockProcess._args.command);
args.should.eql(mockProcess._args.args);
opts.should.eql(mockProcess._args.options);
logEvents.length.should.eql(0);
result.code.should.eql(0);
result.stdout.should.eql("123");
result.stderr.should.eql("abc");
done();
}).catch(done);
mockProcess.stdout.emit('data',"1");
mockProcess.stderr.emit('data',"a");
mockProcess.stderr.emit('data',"b");
mockProcess.stdout.emit('data',"2");
mockProcess.stdout.emit('data',"3");
mockProcess.stderr.emit('data',"c");
mockProcess.emit('close',0);
});
it("runs command and resolves on success - emit", function(done) {
var command = "cmd";
var args = [1,2,3];
var opts = { a: true };
exec.run(command,args,opts,true).then(function(result) {
logEvents.length.should.eql(8);
done();
}).catch(done);
mockProcess.stdout.emit('data',"1");
mockProcess.stderr.emit('data',"a");
mockProcess.stderr.emit('data',"b");
mockProcess.stdout.emit('data',"2");
mockProcess.stdout.emit('data',"3");
mockProcess.stderr.emit('data',"c");
mockProcess.emit('close',0);
})
it("runs command and rejects on error - close", function(done) {
var command = "cmd";
var args = [1,2,3];
var opts = { a: true };
exec.run(command,args,opts).then(function() {
done("Command should have rejected");
}).catch(function(result) {
result
result.code.should.eql(123);
result.stdout.should.eql("123");
result.stderr.should.eql("abc");
done();
}).catch(done);
mockProcess.stdout.emit('data',"1");
mockProcess.stderr.emit('data',"a");
mockProcess.stderr.emit('data',"b");
mockProcess.stdout.emit('data',"2");
mockProcess.stdout.emit('data',"3");
mockProcess.stderr.emit('data',"c");
mockProcess.emit('close',123);
})
it("runs command and rejects on error - error", function(done) {
var command = "cmd";
var args = [1,2,3];
var opts = { a: true };
exec.run(command,args,opts).then(function() {
done("Command should have rejected");
}).catch(function(result) {
result
result.code.should.eql(456);
result.stdout.should.eql("");
result.stderr.should.eql("test-error");
done();
}).catch(done);
mockProcess.emit('error',"test-error");
mockProcess.emit('close',456);
})
});