Concatenate total track

+ handle server voicehint time removed, times with 3 digits

tests/control/Export.test.js

@@ -0,0 +1,40 @@
+BR = {};
+require('leaflet');
+turf = require('@turf/turf');
+require('../../js/control/Export.js');
+
+// &lonlats=8.467712,49.488117;8.469354,49.488394;8.470556,49.488946;8.469982,49.489176 + turnInstructionMode=2
+const segments = require('./data/segments.json');
+const brouterTotal = require('./data/brouterTotal.json');
+
+// resolve intended/accepted differences before comparing
+function adopt(total, brouterTotal) {
+    // BRouter total aggregates messages over segments, client total does not,
+    // but that's Ok, so just fix for the test comparison
+    const messages = total.features[0].properties.messages;
+    const message = messages[4].slice();
+    messages[4] = message;
+    message[3] = (+message[3] + +messages[2][3] + +messages[3][3]).toString();
+    message[6] = (+message[6] + +messages[2][6] + +messages[3][6]).toString();
+    messages.splice(2, 2);
+
+    // fix minor float rounding difference
+    total.features[0].properties.times[6] = 28.833; // 28.832
+
+    total.features[0].properties.name = brouterTotal.features[0].properties.name;
+}
+
+test('total track', () => {
+    const segmentsString = JSON.stringify(segments, null, 2);
+    let total = BR.Export._concatTotalTrack(segments);
+    adopt(total, brouterTotal);
+    expect(total).toEqual(brouterTotal);
+
+    // test original segments are not modified
+    expect(JSON.stringify(segments, null, 2)).toEqual(segmentsString);
+
+    // should be repeatable
+    total = BR.Export._concatTotalTrack(segments);
+    adopt(total, brouterTotal);
+    expect(total).toEqual(brouterTotal);
+});