setup labelGenerator to have a default

middleware/assignLabels.js

@@ -1,6 +1,6 @@
 function setup(labelGenerator) {
   function middleware(req, res, next) {
-    return assignLabel(req, res, next, labelGenerator);
+    return assignLabel(req, res, next, labelGenerator || require('pelias-labels'));
   }
 
   return middleware;

test/unit/middleware/assignLabels.js

@@ -1,3 +1,5 @@
+var proxyquire =  require('proxyquire').noCallThru();
+
 module.exports.tests = {};
 
 module.exports.tests.serialization = function(test, common) {
@@ -93,6 +95,47 @@ module.exports.tests.serialization = function(test, common) {
 
   });
 
+  test('no explicit labelGenerator supplied should use pelias-labels module', function(t) {
+    var assignLabels = proxyquire('../../../middleware/assignLabels', {
+      'pelias-labels': function(properties) {
+        if (properties.id === 1) {
+          return 'label 1';
+        }
+      }
+    })();
+
+    var input = {
+      body: {
+        features: [
+          {
+            properties: {
+              id: 1
+            }
+          }
+        ]
+      }
+    };
+
+    var expected = {
+      body: {
+        features: [
+          {
+            properties: {
+              id: 1,
+              label: 'label 1'
+            }
+          }
+        ]
+      }
+    };
+
+    assignLabels({}, input, function () {
+      t.deepEqual(input, expected);
+      t.end();
+    });
+
+  });
+
 };
 
 module.exports.all = function (tape, common) {