fix(disjunctive): prefer values of main query for facet count

packages/algoliasearch-helper/src/SearchParameters/RefinementList.js

@@ -39,7 +39,7 @@ var lib = {
 
     mod[attribute] = facetRefinement;
 
-    return defaultsPure({}, mod, refinementList);
+    return defaultsPure(mod, refinementList);
   },
   /**
    * Removes refinement(s) for an attribute:

packages/algoliasearch-helper/src/SearchParameters/index.js

@@ -1213,7 +1213,6 @@ SearchParameters.prototype = {
 
     return this.setQueryParameters({
       hierarchicalFacetsRefinements: defaultsPure(
-        {},
         mod,
         this.hierarchicalFacetsRefinements
       ),
@@ -1241,7 +1240,6 @@ SearchParameters.prototype = {
     mod[facet] = [path];
     return this.setQueryParameters({
       hierarchicalFacetsRefinements: defaultsPure(
-        {},
         mod,
         this.hierarchicalFacetsRefinements
       ),
@@ -1262,7 +1260,6 @@ SearchParameters.prototype = {
     mod[facet] = [];
     return this.setQueryParameters({
       hierarchicalFacetsRefinements: defaultsPure(
-        {},
         mod,
         this.hierarchicalFacetsRefinements
       ),

packages/algoliasearch-helper/src/SearchResults/index.js

@@ -529,7 +529,7 @@ function SearchResults(state, results, options) {
 
         self.disjunctiveFacets[position] = {
           name: dfacet,
-          data: defaultsPure({}, facetResults, dataFromMainRequest),
+          data: defaultsPure(dataFromMainRequest, facetResults),
           exhaustive: result.exhaustiveFacetsCount,
         };
         assignFacetStats(
@@ -927,7 +927,7 @@ SearchResults.prototype.getFacetValues = function (attribute, opts) {
     return undefined;
   }
 
-  var options = defaultsPure({}, opts, {
+  var options = defaultsPure(opts, {
     sortBy: SearchResults.DEFAULT_SORT,
     // if no sortBy is given, attempt to sort based on facetOrdering
     // if it is given, we still allow to sort via facet ordering first

packages/algoliasearch-helper/test/spec/SearchResults/getFacetValues.js

@@ -729,3 +729,24 @@ test('getFacetValues(hierarchical) when current state is different to constructo
 
   expect(facetValues).toEqual(expected);
 });
+
+test('getFacetValues(facetName) prefers the "main" facet result', function () {
+  var data = require('./getFacetValues/disjunctive-non-exhaustive.json');
+  var searchParams = new SearchParameters(data.state);
+  var result = new SearchResults(searchParams, data.content.results);
+
+  var facetValues = result.getFacetValues('brand');
+
+  var expected = [
+    { count: 1000, isRefined: true, name: 'Apple', escapedValue: 'Apple' },
+    {
+      count: 551,
+      isRefined: false,
+      name: 'Insignia™',
+      escapedValue: 'Insignia™',
+    },
+    { count: 511, isRefined: false, name: 'Samsung', escapedValue: 'Samsung' },
+  ];
+
+  expect(facetValues).toEqual(expected);
+});

packages/algoliasearch-helper/test/spec/SearchResults/getFacetValues/disjunctive-non-exhaustive.json

@@ -0,0 +1,64 @@
+{
+  "content": {
+    "results": [
+      {
+        "hits": [],
+        "nbHits": 1000,
+        "page": 0,
+        "nbPages": 20,
+        "hitsPerPage": 0,
+        "processingTimeMS": 1,
+        "facets": {
+          "brand": {
+            "Apple": 1000
+          }
+        },
+        "exhaustiveFacetsCount": true,
+        "query": "",
+        "params": "query=&maxValuesPerFacet=3&page=0&facets=%5B%22brand%22%5D&tagFilters=&facetFilters=%5B%5B%22brand%3AApple%22%5D%5D",
+        "index": "instant_search"
+      },
+      {
+        "hits": [
+          {
+            "objectID": "1696302"
+          }
+        ],
+        "nbHits": 10000,
+        "page": 0,
+        "nbPages": 1000,
+        "hitsPerPage": 1,
+        "processingTimeMS": 1,
+        "facets": {
+          "brand": {
+            "Insignia™": 551,
+            "Samsung": 511,
+            "Apple": 1
+          }
+        },
+        "exhaustiveFacetsCount": false,
+        "query": "",
+        "params": "query=&maxValuesPerFacet=3&page=0&hitsPerPage=1&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&facets=brand",
+        "index": "instant_search"
+      }
+    ]
+  },
+  "state": {
+    "index": "instant_search",
+    "query": "",
+    "facets": [],
+    "disjunctiveFacets": ["brand"],
+    "hierarchicalFacets": [],
+    "facetsRefinements": {},
+    "facetsExcludes": {},
+    "disjunctiveFacetsRefinements": {
+      "brand": ["Apple"]
+    },
+    "numericRefinements": {},
+    "tagRefinements": [],
+    "hierarchicalFacetsRefinements": {},
+    "maxValuesPerFacet": 3,
+    "page": 0
+  },
+  "error": null
+}