fix(model): Convert number values only if they aren't null to avoid NaN

Co-authored-by: Sascha Depold <sdepold@users.noreply.github.com>

lib/dialects/abstract/query-interface.js

@@ -1011,7 +1011,9 @@ class QueryInterface {
       }
     }
     if (dataType instanceof DataTypes.INTEGER || dataType instanceof DataTypes.BIGINT) {
-      return parseInt(result, 10);
+      if (result !== null) {
+        return parseInt(result, 10);
+      }
     }
     if (dataType instanceof DataTypes.DATE) {
       if (result !== null && !(result instanceof Date)) {

test/integration/model/notExist.test.js

@@ -0,0 +1,58 @@
+'use strict';
+
+const chai = require('chai'),
+  expect = chai.expect,
+  Support = require('../support'),
+  DataTypes = require('../../../lib/data-types');
+
+describe(Support.getTestDialectTeaser('Model'), () => {
+  beforeEach(async function() {
+    this.Order = this.sequelize.define('Order', {
+      id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
+      sequence: DataTypes.INTEGER,
+      amount: DataTypes.DECIMAL,
+      type: DataTypes.STRING
+    });
+
+    await this.sequelize.sync({ force: true });
+
+    await this.Order.bulkCreate([
+      { sequence: 1, amount: 3, type: 'A' },
+      { sequence: 2, amount: 4, type: 'A' },
+      { sequence: 3, amount: 5, type: 'A' },
+      { sequence: 4, amount: 1, type: 'A' },
+      { sequence: 1, amount: 2, type: 'B' },
+      { sequence: 2, amount: 6, type: 'B' }
+    ]);
+  });
+
+  describe('max', () => {
+    it('should type exist', async function() {
+      await expect(this.Order.sum('sequence', { where: { type: 'A' } })).to.eventually.be.equal(10);
+      await expect(this.Order.max('sequence', { where: { type: 'A' } })).to.eventually.be.equal(4);
+      await expect(this.Order.min('sequence', { where: { type: 'A' } })).to.eventually.be.equal(1);
+      await expect(this.Order.sum('amount', { where: { type: 'A' } })).to.eventually.be.equal(13);
+      await expect(this.Order.max('amount', { where: { type: 'A' } })).to.eventually.be.equal(5);
+      await expect(this.Order.min('amount', { where: { type: 'A' } })).to.eventually.be.equal(1);
+
+      await expect(this.Order.sum('sequence', { where: { type: 'B' } })).to.eventually.be.equal(3);
+      await expect(this.Order.max('sequence', { where: { type: 'B' } })).to.eventually.be.equal(2);
+      await expect(this.Order.min('sequence', { where: { type: 'B' } })).to.eventually.be.equal(1);
+      await expect(this.Order.sum('amount', { where: { type: 'B' } })).to.eventually.be.equal(8);
+      await expect(this.Order.max('amount', { where: { type: 'B' } })).to.eventually.be.equal(6);
+      await expect(this.Order.min('amount', { where: { type: 'B' } })).to.eventually.be.equal(2);
+    });
+
+    it('should type not exist', async function() {
+      // DataTypes.INTEGER or DataTypes.BIGINT: previous version should use `.to.eventually.be.NaN`
+      await expect(this.Order.sum('sequence', { where: { type: 'C' } })).to.eventually.be.equal(0);
+      await expect(this.Order.max('sequence', { where: { type: 'C' } })).to.eventually.be.equal(0);
+      await expect(this.Order.min('sequence', { where: { type: 'C' } })).to.eventually.be.equal(0);
+
+      // DataTypes.DECIMAL or DataTypes.FLOAT: previous and PR#13422 both use `to.eventually.be.equal(0)`
+      await expect(this.Order.sum('amount', { where: { type: 'C' } })).to.eventually.be.equal(0);
+      await expect(this.Order.max('amount', { where: { type: 'C' } })).to.eventually.be.equal(0);
+      await expect(this.Order.min('amount', { where: { type: 'C' } })).to.eventually.be.equal(0);
+    });
+  });
+});