FIX #113 : let the user change the tags for highlighting

src/SearchParameters/index.js

@@ -181,6 +181,16 @@ var SearchParameters = function( newParameters ) {
    * @member {string}
    */
   this.attributesToHighlight = params.attributesToHighlight;
+  /**
+   * @see https://www.algolia.com/doc#highlightPreTag
+   * @member {string}
+   */
+  this.highlightPreTag = params.highlightPreTag;
+  /**
+   * @see https://www.algolia.com/doc#highlightPostTag
+   * @member {string}
+   */
+  this.highlightPostTag = params.highlightPostTag;
   /**
    * @see https://www.algolia.com/doc#attributesToSnippet
    * @member {string}

test/integration-spec/helper.highlight.js

@@ -0,0 +1,62 @@
+"use strict";
+
+var test = require( "tape" );
+var algoliasearchHelper = require( "../../index" );
+var setup = require( "../integration-utils.js" ).setup;
+
+test( "[INT][HIGHLIGHT] The highlight should be consistent with the parameters", function( t ) {
+  var indexName = "helper_highlight";
+
+  setup( indexName, function( client, index ) {
+    return index.addObjects( [
+                  { facet : [ "f1", "f2" ] },
+                  { facet : [ "f1", "f3" ] },
+                  { facet : [ "f2", "f3" ] }
+                ] )
+                .then( function() {
+                  return index.setSettings( {
+                    attributesToIndex : [ "facet" ],
+                    attributesForFaceting : [ "facet" ]
+                  } );
+                } )
+                .then( function( content ) {
+                  return index.waitTask( content.taskID );
+                } ).then( function() {
+                  return client;
+                } );
+  } ).then( function( client ) {
+    var helper = algoliasearchHelper( client, indexName, {
+      attributesToHighlight : ["facet"],
+      facets : [ "facet" ]
+    } );
+
+    var calls = 0;
+    helper.on( "result", function( content ) {
+      calls++;
+      if( calls === 1 ) {
+        t.equal( content.hits[0]._highlightResult.facet[0].value,
+                "<em>f1</em>",
+                "should be hightlighted with em (default)" );
+        t.equal( content.hits[1]._highlightResult.facet[0].value,
+                "<em>f1</em>",
+                "should be hightlighted with em (default)" );
+      }
+      else if( calls === 2 ) {
+        t.equal( content.hits[0]._highlightResult.facet[0].value,
+                "<strong>f1</strong>",
+                "should be hightlighted with strong (setting)" );
+        t.equal( content.hits[1]._highlightResult.facet[0].value,
+                "<strong>f1</strong>",
+                "should be hightlighted with strong (setting)" );
+        t.end();
+      }
+    } );
+
+    helper.setQuery( "f1" )
+          .search()
+          .setQueryParameter( "highlightPostTag", "</strong>" )
+          .setQueryParameter( "highlightPreTag", "<strong>" )
+          .search();
+  } );
+} );
+