Cucumber test support for alternatives count parameter

features/step_definitions/matching.js

@@ -39,7 +39,8 @@ module.exports = function () {
                         duration = '',
                         annotation = '',
                         geometry = '',
-                        OSMIDs = '';
+                        OSMIDs = '',
+                        alternatives = '';
 
 
                     if (res.statusCode === 200) {
@@ -95,6 +96,10 @@ module.exports = function () {
                             if (json.matchings.length != 1) throw new Error('*** Checking geometry only supported for matchings with one subtrace');
                             geometry = json.matchings[0].geometry;
                         }
+
+                        if (headers.has('alternatives')) {
+                            alternatives = this.alternativesList(json);
+                        }
                     }
 
                     if (headers.has('turns')) {
@@ -137,6 +142,9 @@ module.exports = function () {
                         got['OSM IDs'] = OSMIDs;
                     }
 
+                    if (headers.has('alternatives')) {
+                        got['alternatives'] = alternatives;
+                    }
                     var ok = true;
                     var encodedResult = '',
                         extendedTarget = '';

features/support/route.js

@@ -180,6 +180,11 @@ module.exports = function () {
         return merged;
     };
 
+    this.alternativesList = (instructions) => {
+        // alternatives_count come from tracepoints list
+        return instructions.tracepoints.map(t => t.alternatives_count.toString()).join(',');
+    };
+
     this.lanesList = (instructions) => {
         return this.extractInstructionList(instructions, instruction => {
             if( 'lanes' in instruction.intersections[0] )

features/testbot/matching.feature

@@ -263,6 +263,22 @@ Feature: Basic Map Matching
             | trace | matchings | geometry                                |
             | abd   | abd       | 1,1,1,1.00009,1,1.00009,0.99991,1.00009 |
 
+    Scenario: Testbot - Matching alternatives count test
+        Given the node map
+            """
+            a b c d e f
+                  g h i
+            """
+
+        And the ways
+            | nodes  | oneway |
+            | abcdef | yes    |
+            | dghi   | yes    |
+
+        When I match I should get
+            | trace  | matchings | alternatives         |
+            | abcdef | abcde     | 1,1,1,1,2,2          |
+
     Scenario: Testbot - Speed greater than speed threshhold
         Given a grid size of 10 meters
         Given the query options