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node-red/test/nodes/core/hardware/36-rpi-gpio_spec.js

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2018-05-22 18:26:52 +02:00
/**
* 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 rpiNode = require("../../../../nodes/core/hardware/36-rpi-gpio.js");
var statusNode = require("../../../../nodes/core/core/25-status.js");
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var helper = require("node-red-node-test-helper");
var fs = require("fs");
describe('RPI GPIO Node', function() {
before(function(done) {
helper.startServer(done);
});
after(function(done) {
helper.stopServer(done);
});
afterEach(function() {
helper.unload();
});
var checkIgnore = function(done) {
setTimeout(function() {
try {
var logEvents = helper.log().args.filter(function(evt) {
return ((evt[0].level == 30) && (evt[0].msg.indexOf("rpi-gpio")===0));
});
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("rpi-gpio : rpi-gpio.errors.ignorenode");
done();
} catch(err) {
done(err);
}
},25);
}
it('should load Input node', function(done) {
var flow = [{id:"n1", type:"rpi-gpio in", name:"rpi-gpio in" }];
helper.load(rpiNode, flow, function() {
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var n1 = helper.getNode("n1");
n1.should.have.property('name', 'rpi-gpio in');
try {
var cpuinfo = fs.readFileSync("/proc/cpuinfo").toString();
if (cpuinfo.indexOf(": BCM") === 1) {
done(); // It's ON a PI ... should really do more tests !
} else {
checkIgnore(done);
}
}
catch(e) {
checkIgnore(done);
}
});
});
it('should load Output node', function(done) {
var flow = [{id:"n1", type:"rpi-gpio out", name:"rpi-gpio out" }];
helper.load(rpiNode, flow, function() {
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var n1 = helper.getNode("n1");
n1.should.have.property('name', 'rpi-gpio out');
try {
var cpuinfo = fs.readFileSync("/proc/cpuinfo").toString();
if (cpuinfo.indexOf(": BCM") === 1) {
done(); // It's ON a PI ... should really do more tests !
} else {
checkIgnore(done);
}
}
catch(e) {
checkIgnore(done);
}
});
});
it('should read a dummy value high (not on Pi)', function(done) {
var flow = [{id:"n1", type:"rpi-gpio in", pin:"7", intype:"up", debounce:"25", read:true, wires:[["n2"]] },
{id:"n2", type:"helper"}];
helper.load(rpiNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
try {
msg.should.have.property('topic', 'pi/7');
msg.should.have.property('payload', 1);
done();
} catch(err) {
done(err);
}
});
});
});
it('should read a dummy value low (not on Pi)', function(done) {
var flow = [{id:"n1", type:"rpi-gpio in", pin:"11", intype:"down", debounce:"25", read:true, wires:[["n2"]] },
{id:"n2", type:"helper"}];
helper.load(rpiNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
try {
msg.should.have.property('topic', 'pi/11');
msg.should.have.property('payload', 0);
done();
} catch(err) {
done(err);
}
});
});
});
it('should be able preset out to a dummy value (not on Pi)', function(done) {
var flow = [{id:"n1", type:"rpi-gpio out", pin:"7", out:"out", level:"0", set:true, freq:"", wires:[], z:"1"},
{id:"n2", type:"status", scope:null, wires:[["n3"]], z:"1"},
{id:"n3", type:"helper", z:"1"}];
helper.load([rpiNode,statusNode], flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var n3 = helper.getNode("n3");
n3.on("input", function(msg) {
try {
msg.should.have.property('status');
msg.status.should.have.property('text', "rpi-gpio.status.na");
done();
} catch(err) {
done(err);
}
});
n1.receive({payload:"1"});
});
});
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});