TextViewBenchmark: A suite of performance tests for macOS text views

TextViewBenchmark

A suite of performance tests for macOS text views

Every year, I check in on TextKit 2 to see how things are going. It was introduced in macOS 12, and I found it basically unusable. With macOS 13 it was better, but still rough. So far, on macOS 14, it seems like it might be ok! I was originally having some performance problems. So, I took some time to put together some automated performance tests.

Usage

The tests are automated using XCTest's UI performance testing system, backed by custom OSSignpost. I find this really wonderful for both repeatibility and Instruments usage.

If you want to set up your own view for testing, you can do something like this:

static func withScrollableTextView() -> TextViewController {
    let scrollView = NSTextView.scrollableTextView()
    let textView = scrollView.documentView as! NSTextView

    return TextViewController(textView: textView, scrollView: scrollView)
}

Results

I'm using macOS 14 beta, so that may be a factor. Based on these tests, TextKit 1 is extremely fast and TextKit 2 actually even a small amount faster!

Contributing and Collaboration

I'd love to hear from you! Get in touch via an issue or pull request.

I prefer collaboration, and would love to find ways to work together if you have a similar project.

I prefer indentation with tabs for improved accessibility. But, I'd rather you use the system you want and make a PR than hesitate because of whitespace.

By participating in this project you agree to abide by the Contributor Code of Conduct.

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