fix(query-generator): correctly treat projection inversion in include default scope (#10597)

Fixes #10399

lib/dialects/abstract/query-generator.js

@@ -1425,6 +1425,7 @@ class QueryGenerator {
 
     // includeIgnoreAttributes is used by aggregate functions
     if (topLevelInfo.options.includeIgnoreAttributes !== false) {
+      include.model._expandAttributes(include);
       const includeAttributes = include.attributes.map(attr => {
         let attrAs = attr;
         let verbatim = false;

lib/model.js

@@ -3082,7 +3082,9 @@ class Model {
   }
 
   static _expandAttributes(options) {
-    if (_.isPlainObject(options.attributes)) {
+    if (!_.isPlainObject(options.attributes)) {
+      return;
+    }
     let attributes = Object.keys(this.rawAttributes);
 
     if (options.attributes.exclude) {
@@ -3095,7 +3097,6 @@ class Model {
 
     options.attributes = attributes;
   }
-  }
 
   // Inject _scope into options.
   static _injectScope(options) {

test/integration/model/scope/find.test.js

@@ -46,6 +46,18 @@ describe(Support.getTestDialectTeaser('Model'), () => {
         }
       });
 
+      this.DefaultScopeExclude = this.sequelize.define('DefaultScopeExclude', {
+        name: Sequelize.STRING
+      }, {
+        defaultScope: {
+          attributes: {
+            exclude: ['name']
+          }
+        }
+      });
+
+      this.ScopeMe.hasMany(this.DefaultScopeExclude);
+
       return this.sequelize.sync({ force: true }).then(() => {
         const records = [
           { username: 'tony', email: 'tony@sequelizejs.com', access_level: 3, other_value: 7, parent_id: 1 },
@@ -119,5 +131,11 @@ describe(Support.getTestDialectTeaser('Model'), () => {
         expect(user.username).to.equal('fake');
       });
     });
+
+    it('should work when included with default scope', function() {
+      return this.ScopeMe.findOne({
+        include: [this.DefaultScopeExclude]
+      });
+    });
   });
 });