added stub request_language sanitizer that just allows lang param

sanitizer/_request_language.js

@@ -0,0 +1,15 @@
+// this sanitizer exists solely to allow `lang` as a request parameter
+function _sanitize( raw, clean ){
+  // error & warning messages
+  return { errors: [], warnings: [] };
+}
+
+function _expected(){
+  return [{ 'name': 'lang' }];
+}
+
+// export function
+module.exports = () => ({
+  sanitize: _sanitize,
+  expected: _expected
+});

sanitizer/autocomplete.js

@@ -17,7 +17,8 @@ module.exports.middleware = (_api_pelias_config) => {
       location_bias: require('../sanitizer/_location_bias')(_api_pelias_config.defaultParameters),
       geo_autocomplete: require('../sanitizer/_geo_autocomplete')(),
       boundary_country: require('../sanitizer/_boundary_country')(),
-      categories: require('../sanitizer/_categories')()
+      categories: require('../sanitizer/_categories')(),
+      request_language: require('../sanitizer/_request_language')()
     };
 
   return ( req, res, next ) => {

sanitizer/nearby.js

@@ -15,7 +15,8 @@ var sanitizers = {
   private: require('../sanitizer/_flag_bool')('private', false),
   geo_reverse: require('../sanitizer/_geo_reverse')(),
   boundary_country: require('../sanitizer/_boundary_country')(),
-  categories: require('../sanitizer/_categories')()
+  categories: require('../sanitizer/_categories')(),
+  request_language: require('../sanitizer/_request_language')()
 };
 
 // middleware

sanitizer/place.js

@@ -4,7 +4,8 @@ var sanitizeAll = require('../sanitizer/sanitizeAll'),
       singleScalarParameters: require('../sanitizer/_single_scalar_parameters')(),
       debug: require('../sanitizer/_debug')(),
       ids: require('../sanitizer/_ids')(),
-      private: require('../sanitizer/_flag_bool')('private', false)
+      private: require('../sanitizer/_flag_bool')('private', false),
+      request_language: require('../sanitizer/_request_language')()
     };
 
 // middleware

sanitizer/reverse.js

@@ -13,7 +13,8 @@ var sanitizeAll = require('../sanitizer/sanitizeAll'),
       size: require('../sanitizer/_size')(/* use defaults*/),
       private: require('../sanitizer/_flag_bool')('private', false),
       geo_reverse: require('../sanitizer/_geo_reverse')(),
-      boundary_country: require('../sanitizer/_boundary_country')()
+      boundary_country: require('../sanitizer/_boundary_country')(),
+      request_language: require('../sanitizer/_request_language')()
     };
 
 // middleware

sanitizer/search.js

@@ -18,7 +18,8 @@ module.exports.middleware = (_api_pelias_config) => {
         boundary_country: require('../sanitizer/_boundary_country')(),
         categories: require('../sanitizer/_categories')(),
         // this can go away once geonames has been abrogated
-        geonames_warnings: require('../sanitizer/_geonames_warnings')()
+        geonames_warnings: require('../sanitizer/_geonames_warnings')(),
+        request_language: require('../sanitizer/_request_language')()
       };
 
   return ( req, res, next ) => {

sanitizer/structured_geocoding.js

@@ -19,7 +19,8 @@ module.exports.middleware = (_api_pelias_config) => {
         location_bias: require('../sanitizer/_location_bias')(_api_pelias_config.defaultParameters),
         geo_search: require('../sanitizer/_geo_search')(),
         boundary_country: require('../sanitizer/_boundary_country')(),
-        categories: require('../sanitizer/_categories')()
+        categories: require('../sanitizer/_categories')(),
+        request_language: require('../sanitizer/_request_language')()
       };
 
   return ( req, res, next ) => {

test/unit/run.js

@@ -76,6 +76,7 @@ var tests = [
   require('./sanitizer/_layers'),
   require('./sanitizer/_location_bias'),
   require('./sanitizer/_city_name_standardizer'),
+  require('./sanitizer/_request_language'),
   require('./sanitizer/_single_scalar_parameters'),
   require('./sanitizer/_size'),
   require('./sanitizer/_sources'),

test/unit/sanitizer/_request_language.js

@@ -0,0 +1,35 @@
+const sanitizer = require('../../../sanitizer/_request_language')();
+
+module.exports.tests = {};
+
+module.exports.tests.do_nothing = (test, common) => {
+  test('sanitize should return empty warnings/erros', t => {
+    const messages = sanitizer.sanitize();
+
+    t.deepEquals(messages.errors, [], 'no errors');
+    t.deepEquals(messages.warnings, [], 'no warnings');
+    t.end();
+
+  });
+
+};
+
+module.exports.tests.expected = (test, common) => {
+  test('expected should contain only \'lang\'', t => {
+    const expected = sanitizer.expected();
+
+    t.deepEquals(expected, [{'name': 'lang'}]);
+    t.end();
+
+  });
+};
+
+module.exports.all = (tape, common) => {
+  function test(name, testFunction) {
+    return tape(`SANITIZE _request_language: ${name}`, testFunction);
+  }
+
+  for( const testCase in module.exports.tests ){
+    module.exports.tests[testCase](test, common);
+  }
+};

test/unit/sanitizer/autocomplete.js

@@ -120,6 +120,14 @@ module.exports.tests.sanitizers = function(test, common) {
             return { errors: [], warnings: [] };
           }
         };
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
     });
 
@@ -136,7 +144,8 @@ module.exports.tests.sanitizers = function(test, common) {
       '_location_bias',
       '_geo_autocomplete',
       '_boundary_country',
-      '_categories'
+      '_categories',
+      '_request_language'
     ];
 
     const req = {};

test/unit/sanitizer/nearby.js

@@ -109,6 +109,14 @@ module.exports.tests.sanitize = function(test, common) {
             return { errors: [], warnings: [] };
           }
         };
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
     });
 
@@ -124,7 +132,8 @@ module.exports.tests.sanitize = function(test, common) {
       '_flag_bool',
       '_geo_reverse',
       '_boundary_country',
-      '_categories'
+      '_categories',
+      '_request_language'
     ];
 
     const req = {};

test/unit/sanitizer/place.js

@@ -45,6 +45,14 @@ module.exports.tests.sanitize = function(test, common) {
         } else {
             throw new Error('incorrect parameters passed to _flag_bool');
         }
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
     });
 
@@ -52,7 +60,8 @@ module.exports.tests.sanitize = function(test, common) {
       '_single_scalar_parameters',
       '_debug',
       '_ids',
-      '_flag_bool'
+      '_flag_bool',
+      '_request_language'
     ];
 
     const req = {};

test/unit/sanitizer/reverse.js

@@ -101,6 +101,14 @@ module.exports.tests.sanitize = function(test, common) {
             return { errors: [], warnings: [] };
           }
         };
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
     });
 
@@ -115,7 +123,8 @@ module.exports.tests.sanitize = function(test, common) {
       '_size',
       '_flag_bool',
       '_geo_reverse',
-      '_boundary_country'
+      '_boundary_country',
+      '_request_language'
     ];
 
     const req = {};

test/unit/sanitizer/search.js

@@ -133,6 +133,14 @@ module.exports.tests.sanitize = (test, common) => {
             }
           }
         };
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
 
     });
@@ -151,7 +159,8 @@ module.exports.tests.sanitize = (test, common) => {
       '_geo_search',
       '_boundary_country',
       '_categories',
-      '_geonames_warnings'
+      '_geonames_warnings',
+      '_request_language'
     ];
 
     const req = {};

test/unit/sanitizer/structured_geocoding.js

@@ -137,6 +137,14 @@ module.exports.tests.sanitize = function(test, common) {
             }
           }
         };
+      },
+      '../sanitizer/_request_language': () => {
+        return {
+          sanitize: () => {
+            called_sanitizers.push('_request_language');
+            return { errors: [], warnings: [] };
+          }
+        };
       }
     });
 
@@ -155,7 +163,8 @@ module.exports.tests.sanitize = function(test, common) {
       '_location_bias',
       '_geo_search',
       '_boundary_country',
-      '_categories'
+      '_categories',
+      '_request_language'
     ];
 
     var req = {};