fix(collection): skip creating capped collection if autoCreate set …

…to `false`

Fix #8566

lib/drivers/node-mongodb-native/collection.js

@@ -51,6 +51,11 @@ NativeCollection.prototype.onOpen = function() {
     return _this.collection;
   }
 
+  if (_this.opts.autoCreate === false) {
+    _this.collection = _this.conn.db.collection(_this.name);
+    return _this.collection;
+  }
+
   // capped
   return _this.conn.db.collection(_this.name, function(err, c) {
     if (err) return callback(err);

lib/model.js

@@ -4700,6 +4700,7 @@ Model.compile = function compile(name, schema, collectionName, connection, base)
   const collectionOptions = {
     bufferCommands: bufferCommands,
     capped: schema.options.capped,
+    autoCreate: schema.options.autoCreate,
     Promise: model.base.Promise
   };
 

test/collection.capped.test.js

@@ -7,6 +7,7 @@
 const start = require('./common');
 
 const assert = require('assert');
+const co = require('co');
 const random = require('../lib/utils').random;
 
 const mongoose = start.mongoose;
@@ -92,4 +93,29 @@ describe('collections: capped:', function() {
       });
     });
   });
+
+  it('skips when setting autoCreate to false (gh-8566)', function() {
+    const db = start();
+    this.timeout(30000);
+
+    return co(function*() {
+      yield db.dropDatabase();
+
+      const schema = new mongoose.Schema({
+        name: String
+      }, {
+        capped: { size: 1024 },
+        bufferCommands: false,
+        autoCreate: false // disable `autoCreate` since `bufferCommands` is false
+      });
+
+      const Model = db.model('Test', schema);
+      // Explicitly create the collection before using it
+      // so the collection is capped.
+      yield Model.createCollection({ capped: true, size: 1024 });
+
+      // Should not throw
+      yield Model.create({ name: 'test' });
+    });
+  });
 });