From 7c8c71a3de14192f4e3aa980afd7398cbd8b7c7a Mon Sep 17 00:00:00 2001
From: Norbert Renner <norbert.renner@gmx.de>
Date: Thu, 14 Oct 2021 17:53:21 +0200
Subject: [PATCH] Add stats track tests (failing)

---
 js/util/CheapRuler.js         |  7 +++++++
 js/util/StdPath.js            |  5 +++--
 tests/util/CheapRuler.test.js | 32 ++++++++++++++++++++++++++------
 tests/util/StdPath.test.js    | 30 ++++++++++++++++++++++++++++++
 4 files changed, 66 insertions(+), 8 deletions(-)
 create mode 100644 tests/util/StdPath.test.js

diff --git a/js/util/CheapRuler.js b/js/util/CheapRuler.js
index 199097f..3ac144d 100644
--- a/js/util/CheapRuler.js
+++ b/js/util/CheapRuler.js
@@ -107,3 +107,10 @@ btools = {};
     })((util = btools.util || (btools.util = {})));
 })(btools || (btools = {}));
 btools.util.CheapRuler.__static_initialize();
+
+btools.util.CheapRuler.toIntegerLngLat = (coordinate) => {
+    const ilon = (coordinate[0] + 180) * 1e6;
+    const ilat = (coordinate[1] + 90) * 1e6;
+
+    return [ilon, ilat];
+};
diff --git a/js/util/StdPath.js b/js/util/StdPath.js
index 14e45ba..d24e487 100644
--- a/js/util/StdPath.js
+++ b/js/util/StdPath.js
@@ -1,7 +1,5 @@
 (function () {
     // Calculates time and energy stats
-    //
-    // from BRouter btools.router.StdPath
 
     class BExpressionContextWay {
         getMaxspeed() {
@@ -18,6 +16,7 @@
         }
     }
 
+    // from BRouter btools.router.RoutingContext
     class RoutingContext {
         constructor() {
             this.expctxGlobal = new BExpressionContext();
@@ -32,6 +31,7 @@
         }
     }
 
+    // from BRouter btools.router.StdPath
     class StdPath {
         constructor() {
             this.totalTime = 0;
@@ -143,4 +143,5 @@
     StdPath.GRAVITY = 9.81;
 
     BR.StdPath = StdPath;
+    BR.RoutingContext = RoutingContext;
 })();
diff --git a/tests/util/CheapRuler.test.js b/tests/util/CheapRuler.test.js
index 3634de2..3da5fbb 100644
--- a/tests/util/CheapRuler.test.js
+++ b/tests/util/CheapRuler.test.js
@@ -1,14 +1,13 @@
 require('../../js/util/CheapRuler.js');
+const geoJson = require('../format/data/track.json');
 
 test('distance', () => {
     // https://github.com/abrensch/brouter/issues/3#issuecomment-440375918
-    const latlng1 = [48.8124, 2.3158];
-    const latlng2 = [48.8204, 2.321];
+    const lngLat1 = [2.3158, 48.8124];
+    const lngLat2 = [2.321, 48.8204];
 
-    const ilon1 = (latlng1[1] + 180) * 1e6;
-    const ilat1 = (latlng1[0] + 90) * 1e6;
-    const ilon2 = (latlng2[1] + 180) * 1e6;
-    const ilat2 = (latlng2[0] + 90) * 1e6;
+    const [ilon1, ilat1] = btools.util.CheapRuler.toIntegerLngLat(lngLat1);
+    const [ilon2, ilat2] = btools.util.CheapRuler.toIntegerLngLat(lngLat2);
 
     const distance = btools.util.CheapRuler.distance(ilon1, ilat1, ilon2, ilat2);
 
@@ -16,3 +15,24 @@ test('distance', () => {
     // 968.0593622374572 - CheapRuler.java
     expect(distance).toBeCloseTo(968.0593622374572);
 });
+
+test('total distance', () => {
+    const coordinates = geoJson.features[0].geometry.coordinates;
+    const properties = geoJson.features[0].properties;
+    let totalDistance = 0;
+
+    for (let i = 0; i < coordinates.length; i++) {
+        if (i === 0) continue;
+
+        const coord1 = coordinates[i - 1];
+        const coord2 = coordinates[i];
+
+        const [ilon1, ilat1] = btools.util.CheapRuler.toIntegerLngLat(coord1);
+        const [ilon2, ilat2] = btools.util.CheapRuler.toIntegerLngLat(coord2);
+
+        const distance = btools.util.CheapRuler.distance(ilon1, ilat1, ilon2, ilat2);
+        totalDistance += distance;
+    }
+
+    expect(Math.round(totalDistance)).toEqual(+properties['track-length']);
+});
diff --git a/tests/util/StdPath.test.js b/tests/util/StdPath.test.js
new file mode 100644
index 0000000..a0a4be1
--- /dev/null
+++ b/tests/util/StdPath.test.js
@@ -0,0 +1,30 @@
+BR = {};
+require('../../js/util/CheapRuler.js');
+require('../../js/util/StdPath.js');
+
+const geoJson = require('../format/data/track.json');
+
+test('simple track', () => {
+    const coordinates = geoJson.features[0].geometry.coordinates;
+    const properties = geoJson.features[0].properties;
+    const rc = new BR.RoutingContext();
+    const stdPath = new BR.StdPath();
+
+    for (let i = 0; i < coordinates.length; i++) {
+        if (i === 0) continue;
+
+        const coord1 = coordinates[i - 1];
+        const coord2 = coordinates[i];
+
+        const [ilon1, ilat1] = btools.util.CheapRuler.toIntegerLngLat(coord1);
+        const [ilon2, ilat2] = btools.util.CheapRuler.toIntegerLngLat(coord2);
+
+        const distance = btools.util.CheapRuler.distance(ilon1, ilat1, ilon2, ilat2);
+        const deltaHeight = coord2[2] - coord1[2];
+
+        stdPath.computeKinematic(rc, distance, deltaHeight, true);
+    }
+
+    expect(Math.round(stdPath.getTotalEnergy())).toEqual(+properties['total-energy']);
+    expect(Math.round(stdPath.getTotalTime())).toEqual(+properties['total-time']);
+});