Optimize test efficiency in schema.test.js

[Vegapunk-debug]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the performance issue has not already been reported

Last performant version

1.2.5

Slowed down in version

1.x.x

Node.js version

2.0.0

🦥 Performance issue

After upgrading to version 2.x.x, the validation step for schemas has become significantly slower.
A test that previously ran instantly now takes approximately 200–300ms longer.
This slowdown occurs consistently across multiple test runs.

Steps to Reproduce

1. Install version 2.x.x of the package.
2. Create a simple schema that includes a Date field.
3. Run the following test code:

const mongoose = require('mongoose');

const TestSchema = new mongoose.Schema({
  createdAt: Date
});

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

// Trigger cast error by passing a boolean for a Date field
console.time('validate');
const result = new Test({ createdAt: true }).validateSync();
console.timeEnd('validate');


### Expected Behavior

The validation should run with the same performance as in version 1.x.x.  
Calling `validateSync()` should be fast and should not introduce any noticeable delay.  
There should be no slowdown when validating a schema with a Date field, even when an invalid value (such as a boolean) is provided.

[vkarpov15]

I'm not sure which version you're talking about here, Mongoose's currently major supported versions are 6.x.x, 7.x.x, and 8.x.x.

The script you provided takes about 8ms on my machine - certainly not 200-300ms.

[Vegapunk-debug]

Thanks for checking this. The slowdown likely depends on environment and may not be visible on all systems.