fix: unordered bulk write should attempt to execute all batches

When an unordered bulk operation is executed, it should attempt to
execute all batches and only return errors after all batches have
been attempted

NODE-2619

lib/bulk/unordered.js

@@ -105,6 +105,14 @@ class UnorderedBulkOperation extends BulkOperationBase {
 
     super(topology, collection, options, false);
   }
+
+  handleWriteError(callback, writeResult) {
+    if (this.s.batches.length) {
+      return false;
+    }
+
+    return super.handleWriteError(callback, writeResult);
+  }
 }
 
 /**

test/functional/bulk.test.js

@@ -1637,9 +1637,9 @@ describe('Bulk', function() {
               coll.bulkWrite(
                 [
                   { insertOne: { _id: 5, a: 0 } },
-                  { updateOne: { filter: { _id: 1 }, update: { $set: { a: 0 } } } },
+                  { updateOne: { filter: { _id: 1 }, update: { $set: { a: 15 } } } },
                   { insertOne: { _id: 6, a: 0 } },
-                  { updateOne: { filter: { _id: 2 }, update: { $set: { a: 0 } } } }
+                  { updateOne: { filter: { _id: 2 }, update: { $set: { a: 42 } } } }
                 ],
                 { ordered: false }
               )
@@ -1666,7 +1666,7 @@ describe('Bulk', function() {
     return client.connect().then(() => {
       this.defer(() => client.close());
 
-      const coll = client.db().collection('bulk_op_ordering_test');
+      const coll = client.db().collection('unordered_preserve_order');
       function ignoreNsNotFound(err) {
         if (!err.message.match(/ns not found/)) throw err;
       }
@@ -1697,4 +1697,70 @@ describe('Bulk', function() {
         );
     });
   });
+
+  it('should not fail on the first error in an unorderd bulkWrite', function() {
+    const client = this.configuration.newClient();
+    return client.connect().then(() => {
+      this.defer(() => client.close());
+
+      const coll = client.db().collection('bulk_op_ordering_test');
+      function ignoreNsNotFound(err) {
+        if (!err.message.match(/ns not found/)) throw err;
+      }
+
+      return coll
+        .drop()
+        .catch(ignoreNsNotFound)
+        .then(() => coll.createIndex({ email: 1 }, { unique: 1, background: false }))
+        .then(() =>
+          Promise.all([
+            coll.updateOne(
+              { email: 'adam@gmail.com' },
+              { $set: { name: 'Adam Smith', age: 29 } },
+              { upsert: true }
+            ),
+            coll.updateOne(
+              { email: 'john@gmail.com' },
+              { $set: { name: 'John Doe', age: 32 } },
+              { upsert: true }
+            )
+          ])
+        )
+        .then(() =>
+          coll.bulkWrite(
+            [
+              {
+                updateOne: {
+                  filter: { email: 'adam@gmail.com' },
+                  update: { $set: { age: 39 } }
+                }
+              },
+              {
+                insertOne: {
+                  document: {
+                    email: 'john@gmail.com'
+                  }
+                }
+              }
+            ],
+            { ordered: false }
+          )
+        )
+        .then(
+          () => {
+            throw new Error('expected a bulk error');
+          },
+          err =>
+            expect(err)
+              .property('code')
+              .to.equal(11000)
+        )
+        .then(() => coll.findOne({ email: 'adam@gmail.com' }))
+        .then(updatedAdam =>
+          expect(updatedAdam)
+            .property('age')
+            .to.equal(39)
+        );
+    });
+  });
 });