fix(uniqueConstraintError): Add parent, original and sql properties, similar to …

…other DB errors (#6463)

changelog.md

@@ -40,6 +40,7 @@
 [#6406](https://github.com/sequelize/sequelize/issues/6406)
 - [FIXED] Nested query return correct result when quoteIdentifiers is false. (Postgres) [#6363](https://github.com/sequelize/sequelize/issues/6363)
 - [FIXED] Fixed an issue where changing multiple ENUM columns in PostgreSQL could break. [#6203] (https://github.com/sequelize/sequelize/issues/6203)
+- [FIXED] Add `parent`, `original` and `sql` properties to `UniqueConstraintError`
 
 ## BC breaks:
 - Range type bounds now default to [postgres default](https://www.postgresql.org/docs/9.5/static/rangetypes.html#RANGETYPES-CONSTRUCT) `[)` (inclusive, exclusive), previously was `()` (exclusive, exclusive)

lib/errors.js

@@ -162,6 +162,9 @@ class UniqueConstraintError extends ValidationError {
     this.message = options.message;
     this.errors = options.errors;
     this.fields = options.fields;
+    this.parent = options.parent;
+    this.original = options.parent;
+    this.sql = options.parent.sql;
   }
 }
 exports.UniqueConstraintError = UniqueConstraintError;

test/integration/error.test.js

@@ -244,5 +244,25 @@ describe(Support.getTestDialectTeaser('Sequelize Errors'), function () {
         return expect(this.sequelize.query('INSERT INTO users (name) VALUES (\'jan\')')).to.be.rejectedWith(this.sequelize.UniqueConstraintError);
       });
     });
+
+    it('adds parent and sql properties', function () {
+      var User = this.sequelize.define('user', {
+        name: {
+          type: Sequelize.STRING,
+          unique: 'unique',
+        }
+      }, { timestamps: false });
+
+      return this.sequelize.sync({ force: true }).bind(this).then(function () {
+        return User.create({ name: 'jan' });
+      }).then(function () {
+        return expect(User.create({ name: 'jan' })).to.be.rejected;
+      }).then(function (error) {
+        expect(error).to.be.instanceOf(this.sequelize.UniqueConstraintError);
+        expect(error).to.have.property('parent');
+        expect(error).to.have.property('original');
+        expect(error).to.have.property('sql');
+      });
+    });
   });
 });