Making web testing pleasant in Scheme: Schematra 0.4(schematra.com)
schematra.com
Making web testing pleasant in Scheme: Schematra 0.4
https://schematra.com/blog/whats-new-in-schematra-0-4
5 comments
I just shipped Schematra 0.4 with some updates based on some usage and feedback.
Testing ergonomics: Went from 15+ lines of boilerplate to a one-liner by introducing structural testing. Routes can now return S-expressions (chiccup) instead of rendered HTML, so you test against data structures, not string parsing.
Performance notes: I benchmarked chiccup rendering at 145k ops/sec average (339k for simple elements, 2k for 50-row tables). Even worst case is 0.5ms - way below database/network latency, so no caching layer needed, at least not for now.
What's next: Besides the Redis-backed job queue and rqlite-based ORM mentioned in the full post, I'm working on improving route handling with automatic path parameter extraction:
Full post: https://schematra.com/blog/whats-new-in-schematra-0-4
Source: https://github.com/schematra/schematra
Benchmarks: https://github.com/schematra/schematra/tree/main/benchmarks
Testing ergonomics: Went from 15+ lines of boilerplate to a one-liner by introducing structural testing. Routes can now return S-expressions (chiccup) instead of rendered HTML, so you test against data structures, not string parsing.
;; Assert against structure, not HTML strings
(test "returns greeting"
'(ccup [h1 "Hello"])
(test-route-body app 'GET "/hello"))
Performance notes: I benchmarked chiccup rendering at 145k ops/sec average (339k for simple elements, 2k for 50-row tables). Even worst case is 0.5ms - way below database/network latency, so no caching layer needed, at least not for now.
What's next: Besides the Redis-backed job queue and rqlite-based ORM mentioned in the full post, I'm working on improving route handling with automatic path parameter extraction:
(get "/posts/:id/comments"
;; :id automatically becomes a local variable
(display id)) ; just works, no (alist-ref 'id params) needed
Full post: https://schematra.com/blog/whats-new-in-schematra-0-4
Source: https://github.com/schematra/schematra
Benchmarks: https://github.com/schematra/schematra/tree/main/benchmarks
Thank you for writing this! Do you know how much work it would be to generalise to other Schemes, like say Guile?
All of it? probably not a small effort. Parts of it like chiccup html generation, maybe a couple of days, assuming there's something similar to sxml in the target scheme.
But for Guile in particular there's https://artanis.dev/ that's a pretty close cousin.
But for Guile in particular there's https://artanis.dev/ that's a pretty close cousin.
https://rqlite.io