test & fix for searching for rows using an array of primary keys

lib/dialects/postgres/query-generator.js

@@ -565,13 +565,17 @@ module.exports = (function() {
 
         if (Array.isArray(value)) {
           if (value.length === 0) { value = [null] }
-          var col = null;
+          var col = null, coltype = null
           // Special conditions for searching within an array column type
           var _realKey = key.split('.').pop()
           if (!!factory && !!factory.rawAttributes[_realKey]) {
             col = factory.rawAttributes[_realKey]
+            coltype = col.type
+            if(coltype && !(typeof coltype == 'string')) {
+              coltype = coltype.toString();
             }
-          if ( col && ((!!col.type && col.type.match(/\[\]$/) !== null) || (col.toString().match(/\[\]$/) !== null))) {
+          }
+          if ( col && ((!!coltype && coltype.match(/\[\]$/) !== null) || (col.toString().match(/\[\]$/) !== null))) {
             _value = 'ARRAY[' + value.map(this.escape).join(',') + ']::' + (!!col.type ? col.type : col.toString())
             result.push([_key, _value].join(" && "))
           } else {

test/dao-factory.test.js

@@ -1064,13 +1064,24 @@ describe(Support.getTestDialectTeaser("DAOFactory"), function () {
       })
     })
 
-    it('should be able to find rows where attribute is in a list of values', function () {
+    it('should be able to find rows where attribute is in a list of values', function (done) {
       this.User.findAll({
         where: {
           username: ['boo', 'boo2']
         }
       }).success(function(users){
         expect(users).to.have.length(2);
+        done()
+      });
+    })
+
+    it('should not break when trying to find rows using an array of primary keys', function (done) {
+      this.User.findAll({
+        where: {
+          id: [1, 2, 3]
+        }
+      }).success(function(users){
+        done();
       });
     })