Validation failure not caught in some circumstances

[callumgare]

Using the latest version of Mongoose (6.0.12), in the circumstances documented in "Test 3" document validation failures are not caught in a try/catch statement.

import mongoose from "mongoose";

mongoose.connect(process.env.MONGODB_URL, { useNewUrlParser: true });
const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", async function () {
  const Schema = mongoose.Schema;

  const TestSchema = new Schema({
    url: {
      type: String,
      required: function () {
        return Boolean(new URL(this.url));
      },
    },
  });

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

  // No errors here
  try {
    console.log("Test 1");
    await Test.create({ url: "http://example.com" });
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }

  // This will fail but will be caught properly
  try {
    console.log("Test 2");
    await Test.create({ url: "invalid url" });
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }

  // This will fail but won't be caught properly
  try {
    console.log("Test 3");
    await Test.create({});
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }
});

[IslandRhythms]

I think it has to do with new URL() as VScode is yelling at me because of it

import * as mongoose from "mongoose";

mongoose.connect('mongodb://localhost:27017/test');
const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", async function () {
    console.log('open')
  const Schema = mongoose.Schema;

  const TestSchema = new Schema({
    url: {
      type: String,
      required: function () {
        return Boolean(new URL(this.url));
      },
    },
  });

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

  // No errors here
  try {
    console.log("Test 1");
    await Test.create({ url: "http://example.com" });
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }

  // This will fail but will be caught properly
  try {
    console.log("Test 2");
    await Test.create({ url: "invalid url" });
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }

  // This will fail but won't be caught properly
  try {
    console.log("Test 3");
    await Test.create({});
    console.log("No error");
  } catch (error) {
    console.error("Error caught:", error);
  }
});

[callumgare]

@IslandRhythms what error is VS code giving you? I’m guessing it’s complaining about ‘new URL()’ not being caught in a try/catch statement. But of course in this case we want it not to be caught because we want the statement to throw in order to ensure mongoose fails validation.