add tunnel as a class in lua

CHANGELOG.md

@@ -5,6 +5,8 @@
       - FIXED #4781: Fixed overflow exceptions in percent-encoding parsing
     - Guidance:
       - CHANGED #4706: Guidance refactoring step to decouple intersection connectivity analysis and turn instructions generation [#4706](https://github.com/Project-OSRM/osrm-backend/pull/4706)
+    - Profile:
+      - ADDED: `tunnel` as a new class in car profile so that sections of the route with tunnel tags will be marked as such
 
 # 5.14.3
   - Changes from 5.14.2:

features/car/classes.feature

@@ -82,7 +82,7 @@ Feature: Car - Mode flag
             | from | to | route | turns        | classes                                      |
             | a    | d  | ab,cd | depart,arrive| [(restricted),(motorway,restricted),()],[()] |
 
-    Scenario: Car - We toll restricted with a class
+    Scenario: Car - We tag toll with a class
         Given the node map
             """
             a b
@@ -99,6 +99,26 @@ Feature: Car - Mode flag
             | from | to | route    | turns         | classes                          |
             | a    | d  | ab,cd    | depart,arrive | [(toll),(motorway,toll),()],[()] |
 
+    Scenario: Car - We tag tunnel with a class
+        Background:
+            Given a grid size of 200 meters
+
+        Given the node map
+            """
+            a b
+              c d
+            """
+
+        And the ways
+            | nodes | tunnel               |
+            | ab    | no                   |
+            | bc    | yes                  |
+            | cd    |                      |
+
+        When I route I should get
+            | from | to | route       | turns                                      | classes                   |
+            | a    | d  | ab,bc,cd,cd | depart,new name right,new name left,arrive | [()],[(tunnel)],[()],[()] |
+
     Scenario: Car - From roundabout on toll road
         Given the node map
             """

profiles/car.lua

@@ -104,7 +104,7 @@ function setup()
     },
 
     classes = Sequence {
-        'toll', 'motorway', 'ferry', 'restricted'
+        'toll', 'motorway', 'ferry', 'restricted', 'tunnel'
     },
 
     -- classes to support for exclude flags

profiles/lib/way_handlers.lua

@@ -283,6 +283,12 @@ end
 function WayHandlers.classes(profile,way,result,data)
     local forward_toll, backward_toll = Tags.get_forward_backward_by_key(way, data, "toll")
     local forward_route, backward_route = Tags.get_forward_backward_by_key(way, data, "route")
+    local tunnel = way:get_value_by_key("tunnel")
+
+    if tunnel and tunnel ~= "no" then
+      result.forward_classes["tunnel"] = true
+      result.backward_classes["tunnel"] = true
+    end
 
     if forward_toll == "yes" then
         result.forward_classes["toll"] = true

test/nodejs/constants.js

@@ -10,7 +10,7 @@ exports.three_test_coordinates = [[7.41337, 43.72956],
 
 exports.two_test_coordinates = exports.three_test_coordinates.slice(0, 2)
 
-exports.test_tile = {'at': [17059, 11948, 15], 'size': 168606};
+exports.test_tile = {'at': [17059, 11948, 15], 'size': 169239};
 
 
 // Test files generated by the routing engine; check test/data