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node-red-nodes/test/utility/exif/94-exif_spec.js

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var should = require("should");
var sinon = require('sinon');
//var fs = require("fs");
var helper = require("node-red-node-test-helper");
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var exifNode = require('../../../utility/exif/94-exif.js');
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describe('exif node', function() {
"use strict";
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beforeEach(function(done) {
helper.startServer(done);
});
afterEach(function(done) {
helper.unload().then(function() {
helper.stopServer(done);
});
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});
it('extracts location data from Exif data of JPEG', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
// the jpg file is a single black dot but it was originally a photo taken at IBM Hursley
//console.log(process.cwd());
//var data = fs.readFileSync("test/utility/exif/exif_test_image.jpg", null); // extracting genuine exif data to be fed back as the result of the stubbed ExifImage constructor
//var data = fs.readFileSync("exif_test_image.jpg", null); // extracting genuine exif data to be fed back as the result of the stubbed ExifImage constructor
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
var gpsmsg = { gps: { GPSLatitudeRef: 'N',
GPSLatitude: [ 50, 57, 22.4697 ],
GPSLongitudeRef: 'W',
GPSLongitude: [ 1, 22, 1.2467 ],
GPSAltitudeRef: 0,
GPSAltitude: 50,
GPSTimeStamp: [ 7, 32, 2 ],
GPSImgDirectionRef: 'M',
GPSImgDirection: 267,
GPSProcessingMethod: 'ASCII\u0000\u0000\u0000FUSED',
GPSDateStamp: '2014:06:10' }
};
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var spy = sinon.stub(exif, 'ExifImage').callsFake(function(arg1,arg2) { arg2(null,gpsmsg); });
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
msg.location.lat.should.equal(50.95624); // this data is stored in the jpg file
msg.location.lon.should.equal(-1.36701);
exif.ExifImage.restore();
done();
});
exifNode1.receive({payload:new Buffer.from("hello")});
});
});
it('extracts location data in Southern and Eastern hemispheres', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
// the jpg file is a single black dot but it was originally a photo taken at IBM Hursley
//console.log(process.cwd());
//var data = fs.readFileSync("test/utility/exif/exif_test_image.jpg", null); // extracting genuine exif data to be fed back as the result of the stubbed ExifImage constructor
//var data = fs.readFileSync("exif_test_image.jpg", null); // extracting genuine exif data to be fed back as the result of the stubbed ExifImage constructor
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
var gpsmsg = { gps: { GPSLatitudeRef: 'S',
GPSLatitude: [ 50, 57, 22.4697 ],
GPSLongitudeRef: 'E',
GPSLongitude: [ 1, 22, 1.2467 ],
GPSTimeStamp: [ 7, 32, 2 ],
GPSImgDirectionRef: 'M',
GPSImgDirection: 267,
GPSProcessingMethod: 'ASCII\u0000\u0000\u0000FUSED',
GPSDateStamp: '2014:06:10' }
};
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var spy = sinon.stub(exif, 'ExifImage').callsFake(function(arg1,arg2) { arg2(null,gpsmsg); });
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
msg.location.lat.should.equal(-50.95624); // this data is stored in the jpg file
msg.location.lon.should.equal(1.36701);
exif.ExifImage.restore();
done();
});
exifNode1.receive({payload:new Buffer.from("hello")});
});
});
it('should report if not a jpeg', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
// this time just use a buffer that isn't an jpeg image
var data = new Buffer.from("hello");
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
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});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("Error: The given image is not a JPEG");
done();
},150);
exifNode1.receive({payload:data});
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});
});
it('should report if bad payload', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
var data = "hello";
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("Invalid payload received, ");
done();
},150);
exifNode1.receive({payload:data});
});
});
it('should report if no payload', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
var data = new Buffer.from("hello");
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("No payload received, ");
done();
},150);
exifNode1.receive({topic:data});
});
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});
it('should report if bad latitude', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
var data = new Buffer.from("hello");
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
var gpsmsg = { gps: { GPSLatitudeRef: 'N',
GPSLatitude: [ 50, 57 ],
GPSLongitudeRef: 'W',
GPSLongitude: [ 1, 22, 1.2467 ],
GPSAltitudeRef: 0,
GPSAltitude: 50,
GPSTimeStamp: [ 7, 32, 2 ] }
};
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var spy = sinon.stub(exif, 'ExifImage').callsFake(
function(arg1,arg2){
arg2(null,gpsmsg);
});
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("Invalid latitude data,");
exif.ExifImage.restore();
done();
},150);
exifNode1.receive({payload:data});
});
});
it('should report if bad longitude', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
var data = new Buffer.from("hello");
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
var gpsmsg = { gps: { GPSLatitudeRef: 'N',
GPSLatitude: [ 50, 57, 1.3 ],
GPSLongitudeRef: 'W',
GPSLongitude: [ 1, 22 ],
GPSAltitudeRef: 0,
GPSAltitude: 50,
GPSTimeStamp: [ 7, 32, 2 ] }
};
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var spy = sinon.stub(exif, 'ExifImage').callsFake(
function(arg1,arg2){
arg2(null,gpsmsg);
});
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("Invalid longitude data,");
exif.ExifImage.restore();
done();
},150);
exifNode1.receive({payload:data});
});
});
it('should report if unsure about location', function(done) {
var exif = require('exif');
var ExifImage = exif.ExifImage;
var data = new Buffer.from("hello");
var eD;
var flow = [{id:"exifNode1", type:"exif", wires:[["helperNode1"]]},
{id:"helperNode1", type:"helper"}];
var gpsmsg = { gps: { GPSLatitudeRef: 'N',
GPSLatitude: [ 50, 57, 1.3 ],
GPSAltitudeRef: 0,
GPSAltitude: 50,
GPSTimeStamp: [ 7, 32, 2 ] }
};
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var spy = sinon.stub(exif, 'ExifImage').callsFake(
function(arg1,arg2){
arg2(null,gpsmsg);
});
helper.load(exifNode, flow, function() {
var exifNode1 = helper.getNode("exifNode1");
var helperNode1 = helper.getNode("helperNode1");
setTimeout(function() {
var logEvents = helper.log().args.filter(function(evt) {
return evt[0].type == "exif";
});
logEvents.should.have.length(1);
logEvents[0][0].should.have.a.property('msg');
logEvents[0][0].msg.toString().should.startWith("The location of this image cannot be determined safely");
exif.ExifImage.restore();
done();
},150);
exifNode1.receive({payload:data});
});
});
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});