fix(hierarchical): reset pagination to 0 when refining

src/SearchParameters/index.js

@@ -1056,6 +1056,7 @@ SearchParameters.prototype = {
     }
 
     return this.setQueryParameters({
+      page: 0,
       hierarchicalFacetsRefinements: defaults({}, mod, this.hierarchicalFacetsRefinements)
     });
   },

test/spec/hierarchical-facets/pagination.js

@@ -0,0 +1,94 @@
+'use strict';
+
+var test = require('tape');
+
+test('hierarchical facets: pagination', function(t) {
+  var algoliasearch = require('algoliasearch');
+  var sinon = require('sinon');
+  var isArray = require('lodash/lang/isArray');
+
+  var algoliasearchHelper = require('../../../');
+
+  var appId = 'hierarchical-toggleRefine-appId';
+  var apiKey = 'hierarchical-toggleRefine-apiKey';
+  var indexName = 'hierarchical-toggleRefine-indexName';
+
+  var client = algoliasearch(appId, apiKey);
+  var helper = algoliasearchHelper(client, indexName, {
+    hierarchicalFacets: [{
+      name: 'categories',
+      attributes: ['categories.lvl0', 'categories.lvl1', 'categories.lvl2', 'categories.lvl3']
+    }]
+  });
+
+  var search = sinon.stub(client, 'search');
+  helper.toggleRefine('categories', 'beers > IPA > Flying dog');
+
+  var algoliaResponse = {
+    'results': [{
+      'query': 'a',
+      'index': indexName,
+      'hits': [{'objectID': 'one'}],
+      'nbHits': 3,
+      'page': 0,
+      'nbPages': 1,
+      'hitsPerPage': 20,
+      'facets': {
+        'categories.lvl0': {'beers': 3, 'sales': 3},
+        'categories.lvl1': {'beers > IPA': 3, 'sales > IPA': 3},
+        'categories.lvl2': {'beers > IPA > Flying dog': 3, 'sales > IPA > Flying dog': 3}
+      }
+    }, {
+      'query': 'a',
+      'index': indexName,
+      'hits': [{'objectID': 'one'}],
+      'nbHits': 1,
+      'page': 0,
+      'nbPages': 1,
+      'hitsPerPage': 1,
+      'facets': {
+        'categories.lvl0': {'beers': 9},
+        'categories.lvl1': {'beers > IPA': 9},
+        'categories.lvl2': {
+          'beers > IPA > Flying dog': 3,
+          'sales > IPA > Flying dog': 3,
+          'beers > IPA > Brewdog punk IPA': 6
+        }
+      }
+    }, {
+      'query': 'a',
+      'index': indexName,
+      'hits': [{'objectID': 'one'}],
+      'nbHits': 1,
+      'page': 0,
+      'nbPages': 1,
+      'hitsPerPage': 1,
+      'facets': {
+        'categories.lvl0': {'beers': 20, 'fruits': 5, 'sales': 20}
+      }
+    }]
+  };
+
+  search.yieldsAsync(null, algoliaResponse);
+  helper.setQuery('');
+  helper.setCurrentPage(1);
+  helper.toggleRefine('categories', 'beers > IPA > Flying dog');
+  helper.search();
+
+  helper.once('result', function() {
+    var call = search.getCall(0);
+    var queries = call.args[0];
+    var hitsQuery = queries[0];
+
+    t.equal(hitsQuery.params.page, 0, 'Page is reset to 0');
+
+    // we do not yet support multiple values for hierarchicalFacetsRefinements
+    // but at some point we may want to open multiple leafs of a hierarchical menu
+    // So we set this as an array so that we do not have to bump major to handle it
+    t.ok(
+      isArray(helper.state.hierarchicalFacetsRefinements.categories),
+      'state.hierarchicalFacetsRefinements is an array'
+    );
+    t.end();
+  });
+});