Add basic loading tests for GPIO nodes

nodes/core/hardware/36-rpi-gpio.js

@@ -340,6 +340,7 @@ module.exports = function(RED) {
     RED.nodes.registerType("rpi-keyboard",PiKeyboardNode);
 
     var pitype = { type:"" };
+    if (allOK === true) {
         exec(gpioCommand+" info", function(err,stdout,stderr) {
             if (err) {
                 RED.log.info(RED._("rpi-gpio.errors.version"));
@@ -354,6 +355,7 @@ module.exports = function(RED) {
                 }
             }
         });
+    }
 
     RED.httpAdmin.get('/rpi-gpio/:id', RED.auth.needsPermission('rpi-gpio.read'), function(req,res) {
         res.json(pitype);

nodes/core/locales/en-US/messages.json

@@ -786,7 +786,7 @@
             "na": "N/A : __value__"
         },
         "errors": {
-            "ignorenode": "Ignoring Raspberry Pi specific node",
+            "ignorenode": "Raspberry Pi specific node set inactive",
             "version": "Failed to get version from Pi",
             "sawpitype": "Saw Pi Type",
             "libnotfound": "Cannot find Pi RPi.GPIO python library",

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

@@ -0,0 +1,90 @@
+/**
+ * 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 rpi = require("../../../../nodes/core/hardware/36-rpi-gpio.js");
+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.should.have.length(1);
+                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(rpi, flow, function() {
+            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(rpi, flow, function() {
+            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);
+            }
+        });
+    });
+
+});