added engine for total downhill time

LazyTesting · LazyTesting · commit 101e2260e5d3 · 2016-11-16T18:12:44.000+01:00
diff --git a/engine/total-downhill-time/app.js b/engine/total-downhill-time/app.js
@@ -0,0 +1,16 @@
+const convertGPX = require('../../core/convert-gpx-data');
+const timeDifference = require('../../core/calculate-time-difference');
+const filterDownhill = require('../../core/filter-downhill');
+
+/**
+ * returns the total downhill time of the track
+ * @param {String} gpxContent - gpx document
+ * @returns {Number} time - elapsed time in seconds
+ */
+const get = function(gpxContent) {
+    const points = convertGPX(gpxContent);
+
+    return filterDownhill(points, timeDifference);
+};
+
+module.exports = get;
diff --git a/engine/total-downhill-time/package.json b/engine/total-downhill-time/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "total-downhill-time",
+  "version": "0.0.1",
+  "description": "",
+  "main": "app.js",
+  "scripts": {
+    "test": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha -- -R spec spec"
+  },
+  "author": "Maarten Groeneweg",
+  "license": "ISC",
+  "devDependencies": {
+    "istanbul": "^0.4.5",
+    "mocha": "^3.1.2"
+  }
+}
diff --git a/engine/total-downhill-time/spec.js b/engine/total-downhill-time/spec.js
@@ -0,0 +1,14 @@
+const time = require('./app.js');
+const path = require('path');
+const fs = require('fs');
+const assert = require('assert');
+
+describe('total downhill time', () => {
+    it('should return a positive number', () => {
+        const filePath = path.join(__dirname, '/test/data.gpx');
+        const gpx = fs.readFileSync(filePath, 'utf8');
+        const result = time(gpx);
+
+        assert.notEqual(result, null);
+    });
+});
diff --git a/engine/total-downhill-time/test/data.gpx b/engine/total-downhill-time/test/data.gpx
