fix: remove options.model overwrite on bulkUpdate (sequelize#15252)

* fix: remove options.model overwrite on bulkUpdate (sequelize#15231)

* fix: remove options.model overwrite on bulkUpdate

* fix: fix typo in test

* fix: make test simpler

Co-authored-by: Rik Smale <13023439+WikiRik@users.noreply.github.com>

Co-authored-by: Rik Smale <13023439+WikiRik@users.noreply.github.com>
(cherry picked from commit c620469)

* fix: adapt test to v6

src/dialects/abstract/query-interface.js

@@ -923,7 +923,7 @@ class QueryInterface {
 
     const sql = this.queryGenerator.updateQuery(tableName, values, identifier, options, attributes);
     const table = _.isObject(tableName) ? tableName : { tableName };
-    const model = _.find(this.sequelize.modelManager.models, { tableName: table.tableName });
+    const model = options.model ? options.model : _.find(this.sequelize.modelManager.models, { tableName: table.tableName });
 
     options.type = QueryTypes.BULKUPDATE;
     options.model = model;

test/unit/model/update.test.js

@@ -49,4 +49,51 @@ describe(Support.getTestDialectTeaser('Model'), () => {
       await expect(this.User.update(this.updates, { where: new Where() })).to.be.rejected;
     });
   });
+
+  describe('Update with multiple models to the same table', () => {
+    before(function () {
+      this.Model1 = current.define('Model1', {
+        value: DataTypes.INTEGER,
+        name: DataTypes.STRING,
+        isModel2: DataTypes.BOOLEAN,
+        model1ExclusiveData: DataTypes.STRING,
+      }, {
+        tableName: 'model_table',
+      });
+
+      this.Model2 = current.define('Model2', {
+        value: DataTypes.INTEGER,
+        name: DataTypes.STRING,
+      }, {
+        tableName: 'model_table',
+      });
+    });
+
+    beforeEach(function () {
+      this.stubQuery = sinon.stub(current, 'query').resolves([]);
+    });
+
+    afterEach(function () {
+      this.stubQuery.restore();
+    });
+
+    it('updates model1 using model1 model', async function ()  {
+      await this.Model1.update({
+        name: 'other name',
+        model1ExclusiveData: 'only I can update this field',
+      }, {
+        where: { value: 1 },
+      });
+      expect(this.stubQuery.lastCall.lastArg.model).to.eq(this.Model1);
+    });
+
+    it('updates model2 using model2 model', async function ()  {
+      await this.Model2.update({
+        name: 'other name',
+      }, {
+        where: { value: 2 },
+      });
+      expect(this.stubQuery.lastCall.lastArg.model).to.eq(this.Model2);
+    });
+  });
 });