validate doesn't throw any error with nested object in schema

[abarriel]

Hey!
I am wondering why the script below doesn't throw any validation error.
I set strict to throw, if I tried to add a key who doesn't exist in the schema it should throw an error which is not the case here.

Solution Found:
If I remove the required for jerome, it works fine. I think the issue may come in the way mongoose handle nested object, for example in this case if I create a subSchema like that, it's works fine:

   jerome: {
      type: new Schema({
        ayoub: String,
      }, { strict: throw }),
      required: true,
    },

standalone strict:

const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const TestSchema = new Schema(
  {
    jerome: {
      type: {
        ayoub: String,
      },
      required: true,
    },
  },
  { strict: "throw", timestamps: true },
);

const Test = mongoose.model("Test", TestSchema);

mongoose.connect("mongodb://localhost:27017/test");

const data = {
  jerome: {
    ayoub: "string",
    fake: "D",
  },
};
// should throw an error
async function main() {
  const res = await Test.create(data);
  console.log(res);
}
main()
  .then(() => process.exit(0))
  .catch((err) => {
	console.log(err);
	process.exit(1)
});

"mongoose": "5.2.18",
nodejs version: v10.6.0

Thank you 👍

[vkarpov15]

This looks like a bug, will investigate ASAP

[vkarpov15]

Upon closer investigation, this isn't a bug. When you do type: { ayoub: String }, Mongoose interprets it as type: Mixed. We'll add more details about this to the FAQ. The below is how you should do this:

const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const TestSchema = new Schema(
  {
    jerome: {
      ayoub: { type: String, required: true }
    },
  },
  { strict: "throw", timestamps: true },
);

const Test = mongoose.model("Test", TestSchema);

mongoose.connect("mongodb://localhost:27017/test");

const data = {
  jerome: {
    ayoub: "string",
    fake: "D",
  },
};
// should throw an error
async function main() {
  const res = await Test.create(data);
  console.log(res);
}
main()
  .then(() => process.exit(0))
  .catch((err) => {
        console.log(err);
        process.exit(1)
});